Retail & e-commerce

Retail & e-commerce

Industry ID: 12 | Slug: retail-ecommerce | Researched: 2026-09-15 | Analyst: agent

1. Definition and boundaries

In scope. The sale of goods to end consumers and the infrastructure that makes it possible: marketplaces and platforms; DTC brands as a channel phenomenon; grocery and food retail; mass, discount, club, off-price and specialty formats; retail media networks as a retailer revenue line; last-mile and reverse fulfilment; resale and recommerce; cross-border and low-cost import platforms; physical store formats; and agentic or AI-mediated shopping.

Explicitly out of scope. Apparel and beauty brand dynamics — design, brand equity, wholesale-versus-DTC brand strategy, trend cycles — belong to sector 23. Advertising as an industry — agency economics, measurement standards as a business, adtech infrastructure sold to non-retailers — belongs to sector 16.

The boundary disputes, named.

1. Retail media. This dossier covers retail media as a retailer profit line: how much revenue it produces, whether growth is decelerating, and what it does to retail margin structure. It does not cover attribution methodology or the agency value chain. The overlap with sector 16 is real and the correct division is P&L versus practice.
2. Resale. Covered here as a retail channel and inventory-sourcing economics (T-12-15). Brand-level resale strategy for apparel and beauty is sector 23's.
3. Agentic commerce. The payment protocols (ACP, AP2) are jointly retail and payments infrastructure. Covered here because the contested question — who becomes the merchant of record and who loses the customer relationship — is a retail question.
4. Grocery versus food service. Census places food services and drinking places inside "retail and food services" but outside the e-commerce denominator. Any e-commerce share figure changes by roughly a percentage point depending on which denominator is used.

2. Subcategories

3. Market structure

Concentration: barbell, not oligopoly. Retail overall is one of the least concentrated large sectors — US retail and food services ran $763.6bn in a single month (July 2026) across hundreds of thousands of firms. But each profitable sub-pool is concentrated to an extreme degree. Retail media is the clearest case: WARC estimates Amazon at 78% of US retail media and Walmart at 7.5%, leaving 14.5% for every other network combined. E-commerce logistics, marketplace infrastructure and payments are similarly winner-take-most.

Where margin actually sits. Not in merchandise. The defining structural fact of 2026 retail is that the profit pool has migrated into adjacent high-margin income:

• Walmart Q2 FY2027: total revenue +5.9%, but advertising +38%, membership income +17%, and operating income +28.8% reported.
• Amazon Q2 2026: online stores $70.4bn (+15%), but advertising $19.8bn (+26%), third-party seller services $46.8bn (+16%) and subscriptions $13.7bn (+12%) — the high-margin lines together exceed the low-margin one.
• Target Q2 FY2026: non-merchandise sales +20.1%, Roundel +20%.

A modern mass retailer is a media-and-membership business with a merchandise distribution arm attached. That is why retailers can invest price and expand operating margin simultaneously, and it is why retail earnings quality now tracks the ad market rather than comparable sales.

Barriers to entry. Low for selling, extreme for the profit pools. Shopify makes storefront creation nearly free; what cannot be replicated is the traffic density that makes an ad network buyable, the store estate that makes same-day delivery economic, and the capital to absorb multi-quarter losses (Meituan absorbed an RMB 19.8bn quarterly operating loss in Q3 2025 and survived; the 2021 Western quick-commerce cohort could not).

Pricing power. Sits with whoever owns demand origination. Retailers hold it over CPG brands — 47% of consumers traded into private label per McKinsey, and 85% now say private label matches or beats national brands, which is a permanent transfer of shelf leverage. Marketplaces hold it over third-party sellers through a rising all-in take rate. Consumers hold it in grocery, where 2025 US volume fell 1.0% while price rose 2.2%.

Market size, with modeller named. Global retail media ad spend of $200.4bn (2026) rising to $223.4bn (2027) — modeller: WARC, Future of Commerce Media 2026, reported 2026-08-19; estimate, not fact. Global secondhand at $393bn — modeller: ThredUp, 2026 Resale Report; a vendor with a direct commercial interest and no disclosed methodology in the material reviewed. Estimate only. US e-commerce of $340.2bn in Q2 2026 is a Census survey measurement and is a fact, with published sampling error.

4. Who matters

Leading companies. Amazon (https://www.aboutamazon.com) · Walmart (https://corporate.walmart.com) · Costco (https://www.costco.com) · Target (https://corporate.target.com) · Kroger (https://www.kroger.com) · Alibaba (https://www.alibabagroup.com) · JD.com (https://corporate.jd.com) · PDD Holdings / Temu (https://www.pddholdings.com) · Meituan (https://about.meituan.com) · Shopify (https://www.shopify.com) · Instacart (https://www.instacart.com) · Criteo (https://www.criteo.com) · ThredUp (https://www.thredup.com)

Notable private/startup. Shein (https://www.sheingroup.com) — private, no verified 2026 financials. Stripe (https://stripe.com) — private, co-author of ACP.

Active investors. Prosus/Naspers (https://www.prosus.com). Honest note: venture capital is largely absent from this sector in 2026. Per the macro brief, over 70% of Q2 2026 global VC went to AI-focused companies and OpenAI plus Anthropic alone took 43% of H1 funding. Retail capital formation in 2026 is corporate capex and public markets, not venture. A thin investor list here is a finding, not a research gap.

Platforms and standards bodies. OpenAI Agentic Commerce Protocol (https://developers.openai.com/commerce/) · Google Agent Payments Protocol (https://cloud.google.com/blog/products/ai-machine-learning/announcing-agents-to-payments-ap2-protocol) · IAB (https://www.iab.com) · GS1 (product identification).

Regulators. US Customs and Border Protection (https://www.cbp.gov) · US Court of International Trade (https://www.cit.uscourts.gov) · European Commission DG TAXUD (https://taxation-customs.ec.europa.eu) · Council of the EU (https://www.consilium.europa.eu) · FTC · UK CMA · China SAMR.

Government statistics. US Census Bureau (https://www.census.gov/retail/) · US BLS (https://www.bls.gov/cpi/) · UK ONS (https://www.ons.gov.uk) · National Bureau of Statistics of China (https://www.stats.gov.cn/english/).

Research institutions. Coresight Research (https://coresight.com) · WARC (https://www.warc.com) · EMARKETER (https://www.emarketer.com) · Adobe Digital Insights · McKinsey Retail Practice (https://www.mckinsey.com/industries/retail) · Penn Wharton Budget Model (https://budgetmodel.wharton.upenn.edu) · Tax Foundation (https://taxfoundation.org).

Trade organisations. National Retail Federation (https://nrf.com) · RILA (https://www.rila.org) · FMI (https://www.fmi.org) · IAB · Ecommerce Europe (https://ecommerce-europe.eu) · British Retail Consortium (https://brc.org.uk).

Consumer and civil-society. Consumer Reports (https://www.consumerreports.org) · BEUC (https://www.beuc.eu) · Which? (https://www.which.co.uk).

5. Products, business models, technologies, customers

Major products. Owned-inventory retail; third-party marketplace access and its attached fulfilment and advertising services; membership programmes; retail media inventory (on-site sponsored placements, off-site programmatic, in-store digital, CTV); commerce software and payments sold to merchants; same-day and instant fulfilment; returns processing and liquidation; resale channels.

How money is actually made today, and how that is changing. Historically: buy low, sell higher, on ~25-35% gross margin, with rent and labour consuming most of it. Today the incremental dollar of retail profit comes from advertising, membership fees, marketplace commission and fulfilment-as-a-service. The change underway is that price itself has become a marketing expense funded by the ad business, which is why Target cut prices on more than 10,000 items while expanding operating margin to 9.6%, and why Walmart is explicitly recycling tariff refunds into price investment.

The second change is one-off and will reverse: tariff refunds. Target booked $994mn in Q2 FY2026, worth 3.7 percentage points of gross margin and about $1.65 of full-year EPS. Walmart attributed a 96bp gross-margin gain primarily to refunds. Any 2027 model that extrapolates 2026 retail margin is wrong by a large, knowable amount.

Technologies that matter. Store-as-fulfilment-node orchestration; demand forecasting and markdown optimisation; retail media ad serving and closed-loop attribution; product information management and structured feeds (now a discoverability requirement, not just an SEO one); agent payment primitives (Stripe's Shared Payment Token, Google's Intent and Cart Mandates); warehouse automation; returns triage and fraud detection.

Customer segments and what they buy on. Consumers buy on price perception, trip convenience and delivery speed — in that order in 2026, given 51% cut impulse purchases and 43% compare prices harder. Third-party sellers buy marketplace access on demand volume, then discover the all-in take rate. CPG brands buy retail media on reach and closed-loop measurement, and are now interrogating incrementality. Enterprise grocers buy fulfilment and ad technology from Instacart because building it is uneconomic.

6. Geography

Demand. The US is the largest single market and the most profitable; its online share is 17.1%. The UK is structurally further along at 28.3% internet sales (July 2026). China has the largest absolute online market — RMB 13.48tn in the first eight months of 2026 — but the weakest demand growth anywhere: total retail sales grew just 1.1% over that period and 0.4% in August alone.

Production and supply. Overwhelmingly China for general merchandise. The EU Council records that 91% of low-value parcels entering the EU originate in China, on a base of 4.6bn packages in 2024 growing to almost 5.9bn items in 2025.

Capital. US public markets and Chinese platform balance sheets. Venture capital is functionally absent (see §4). Europe is the structurally weak leg for commerce funding, consistent with the macro brief's $25.6bn Q2 European VC figure.

Regulation. The EU is the most active rule-maker and moved first on parcels with a legislated, dated regime (EUR 3 per item from 2026-07-01 to 2028). The US regime is judicially determined and unstable: the Supreme Court struck IEEPA tariffs on 2026-02-20, yet the CIT upheld the de minimis suspension on 2026-08-13 on a separate theory. China regulates domestically, having intervened in the instant-retail subsidy war.

Non-US market, with regional source. China is covered from the National Bureau of Statistics of China and Xinhua (https://english.news.cn) — see §15 sources 13 and 14. The picture is a genuinely weak consumer: goods sales up ~1% over eight months, services up 4.9%, online retail up 4.6%, and online food retail up 16.8% in H1. Chinese e-commerce is taking share of a nearly static pie, which is the pressure driving both the domestic price war and the outbound cross-border push that Western customs policy is now closing.

7. Historical trend patterns

Over 10-25 years this sector has produced an unusually well-documented record of hype waves that resolved badly. Being specific about this sector's false positives:

1. "E-commerce will kill physical retail" (2017-2020). The "retail apocalypse" framing drove a decade of capital reallocation. Reality: 83% of US retail is still non-e-commerce in 2026, and six major US retail bankruptcies were filed through mid-July 2026 versus nine in all of 2025. Stores became the fulfilment infrastructure that made the online growth possible.
2. The pandemic step-change (2020-2021). Online share spiked to 16.4% in Q2 2020, and forecasters extrapolated. It retraced, then took five years to regain that level on trend. The lesson — that a shock is not a slope — is the single most expensive forecasting error in this sector's history.
3. Quick commerce, first attempt (2021-2023). Getir, Gorillas, Jokr, Buyk and others raised billions on 10-minute delivery and collapsed. The format was not wrong; the standalone venture-funded structure was. China then re-ran the experiment at far greater scale from incumbent balance sheets (Meituan: RMB 19.8bn operating loss in a single quarter) and it survived as attached infrastructure.
4. DTC disintermediation (2015-2022). Hundreds of brands were funded on the premise that owning the customer beat wholesale. Most discovered that paid-acquisition costs rose faster than lifetime value. The surviving structure is DTC-on-rented-rails, which is why Shopify grows at 34% while individual DTC brands do not.
5. "Every retailer needs a media network" (2021-present). The current live example, and the pattern is familiar: a genuine profit pool at the top, extrapolated to everyone. WARC's 78/7.5/14.5 split is the evidence that the extrapolation failed.
6. Cashierless and checkout-free stores (2018-2023). Heavily hyped, quietly de-scoped. Physical retail technology consistently underdelivers against demos.
7. Social commerce in the West (2019-2023). Repeatedly declared imminent on the strength of Chinese adoption; repeatedly failed to transfer. This is the closest historical analogue to the current agentic-commerce narrative — a real behaviour in one market, assumed to be a universal law.

The recurring mechanism: supplier-side infrastructure announcements are cheap and generate coverage; demand-side adoption is expensive and is disclosed only when flattering. Every one of these waves had a long window in which the infrastructure was real and the transactions were unmeasured.

8. What is changing now (as of 2026-09-15)

Grounded in the macro brief's rising-rate-risk, sticky-inflation frame:

• The legal ground under retail pricing moved twice in six months. The Supreme Court struck IEEPA tariffs on 2026-02-20 (6-3), triggering up to $175bn of refunds; then the CIT upheld the de minimis suspension on 2026-08-13 on a distinct "privilege revocation" theory. Retailers got a cash windfall and kept the barrier against low-price imports. The average effective US tariff rate is now about 7.2% versus 2.4% pre-trade-war.
• Tariff pass-through into consumer prices is far weaker than models assume. BLS August 2026: core goods +0.7%, new vehicles +0.6%, used cars -2.3%. Headline CPI of 3.4% is an energy story — energy +16.3% — consistent with the FOMC's Middle East disruption attribution. Importers, retailers and foreign exporters absorbed the duty in margin; the refund then reversed part of it.
• E-commerce resumed its grind. 17.1% of US retail, +12.2% YoY against +6.7% for total retail, verified at the Census primary source.
• Retail media's aggregate deceleration is real but is actually a concentration story. WARC's ex-Amazon 2027 growth of 9.8% is the lowest it has recorded, while Amazon grew 26% and Walmart 38% in Q2 2026.
• Consumers are trading down persistently, not cyclically. US grocery volume fell 1.0% in 2025 while price rose 2.2%; Sam's Club transactions rose 7.0% while ticket fell 2.5%. With wage growth at ~3.5% against 3.4% CPI, this is behaviour that has outlived its cause.
• Agentic commerce built its rails and has not disclosed a single transaction. One year after ACP and AP2 launched, no participant has published a volume figure.
• China is the demand problem, not the growth story. 0.4% August retail growth.

9. The five lists

Five most important current trends

1. E-commerce penetration past 17% of US retail (T-12-01)
2. Retail media deceleration masking concentration into two players (T-12-02)
3. IEEPA tariff refunds as a one-off margin windfall (T-12-03)
4. De minimis abolition on both sides of the Atlantic (T-12-04)
5. Alternative-profit income as the retail margin engine (T-12-07)

Five fastest-growing signals

1. AI-referred retail traffic converting above baseline (T-12-09)
2. Agentic checkout protocols (T-12-10)
3. Machine-readable storefronts and feed engineering (T-12-11)
4. Off-site and in-store retail media extension (T-12-14)
5. Instant commerce as durable infrastructure post-price-war (T-12-13)

Five trends most likely to affect businesses

1. Tariff refunds and the 2027 margin cliff (T-12-03) — also in list 1
2. Retail media concentration (T-12-02) — also in list 1
3. Merchant platforms outgrowing owned-inventory retail (T-12-08)
4. De minimis abolition (T-12-04) — also in list 1
5. Energy as an operating-cost shock (T-12-12)

Five trends most likely to affect consumers

1. Consumer trade-down and private label (T-12-05)
2. De minimis abolition raising the price floor on cheap goods (T-12-04) — also above
3. Same-day delivery as baseline (T-12-06)
4. The reversal of universal free returns (T-12-17)
5. AI-mediated product discovery (T-12-09) — also in list 2

Overlaps are stated inline. T-12-03, T-12-04 and T-12-02 appear in multiple lists because the tariff and retail-media shifts are simultaneously the largest business and consumer-facing forces in the sector this year.

10. Overhyped / overlooked / cooling / reversing

Most overhyped: agentic shopping as an imminent replacement for search-led commerce. The specific evidence that hype outruns substance: Google announced AP2 on 2025-09-16 with 60+ partners, OpenAI and Stripe launched ACP on 2025-09-29 — and as of 2026-09-15 not one participant (OpenAI, Google, Stripe, Mastercard, American Express, PayPal, Adyen) has published a transaction count, GMV figure or active-merchant number. The only quantified retail-side data is Adobe's, which reports conversion rates while withholding the denominator, and whose growth rate has decayed from 693% to 138% YoY in six months. Note carefully: AI-assisted discovery is demonstrably real. Agent-completed checkout is demonstrably unmeasured. Conflating the two is the sector's most common analytical error.

Second most overhyped: the sub-scale retail media network. WARC: Amazon 78%, Walmart 7.5%, everyone else 14.5% of US retail media. A network below roughly 1% of national media share is a trade-spend reclassification, not a media business.

Most overlooked: the 2027 tariff-refund margin cliff. Target quantified it — $994mn, 3.7pp of margin, ~$1.65 of FY EPS — and Walmart named it as the primary driver of its gross-margin gain. Attention has missed it because the refund arrived as good news inside good quarters, and because it requires connecting a February court ruling to an August earnings line. Every retailer reporting margin expansion in 2026 needs to be asked what the ex-refund number is.

Second most overlooked: energy as a retail cost shock. Energy CPI +16.3% versus core goods +0.7% — a 15-point gap — hitting refrigeration and last-mile fuel precisely as same-day delivery scales. Retail commentary in 2026 is saturated with tariffs and AI, and no retailer in this sample quantified an energy headwind.

Third most overlooked: the US-UK online-share gap as a forecasting tool. The UK is at 28.3% and the US at 17.1%, and the gap is largely definitional rather than behavioural — which means most published comparisons of "how much room US e-commerce has left" are built on non-comparable numbers.

Cooling — with the indicator that turned.

• China-direct low-price platforms. Indicator: PDD Q2 2026 revenue +8% and a consensus miss, net income -12%, with online marketing services growing only 3%.
• The retail apocalypse narrative. Indicator: six major 2026 bankruptcies versus nine in all of 2025, and Coresight framing its midyear review around declining closures.
• China's instant-retail subsidy war. Indicator: Meituan swinging back to profit by August 2026 after an RMB 19.8bn quarterly operating loss.
• Retail media's long tail. Indicator: WARC's 9.8% ex-Amazon 2027 growth, its lowest recorded.

Trends that may reverse, and the mechanism.

• Universal free returns (already reversing). Mechanism: 19.3% of online sales returned and 9% of returns fraudulent makes the policy unaffordable at scale; retailers are segmenting rather than abolishing it. Counter-mechanism: EU Consumer Rights Directive guarantees a 14-day withdrawal right, capping how far EU policy can tighten.
• De minimis closure. Mechanism: it rests on an executive suspension upheld on a narrow judicial theory. A future administration could restore it by executive action before the statutory repeal binds in July 2027. This is the single most reversible item in the dossier.
• The tariff wall itself. Mechanism: Section 122 is time-limited, and Section 232/301 substitutes are subject to the same political volatility the macro brief flags.
• Trade-down. Mechanism: real wage growth of ~3.5% against 3.4% CPI. But 85% of consumers now say private label matches national-brand quality, and quality perception, once shifted, does not revert with income.

11. Risks and major uncertainties

Sector-specific risks. An advertising downturn would hit retail operating income far harder than it hits retail sales, because ad revenue is near-100% incremental margin. Gig-labour reclassification would reprice the entire same-day delivery build-out. Energy and fuel costs compound directly into the fastest-growing part of the cost base. Leverage, not format failure, is what is actually killing retailers (Saks $3.4bn, Sleep Number $1.3bn) — and the macro brief's 3.50-3.75% policy rate with three FOMC members dissenting toward a hike makes that risk live. Marketplace antitrust (FTC v. Amazon, EU DMA) could force unbundling of the marketplace, logistics and advertising stack that constitutes the entire modern retail profit model.

Genuine unknowns — "we don't know" versus "nobody can know."

We don't know (knowable, just not disclosed):

• Agentic commerce transaction volume. The participants know. They have not said.
• AI referrals as a share of total retail traffic. Adobe knows. It publishes everything except the denominator.
• Temu's actual trajectory. PDD does not break out Temu, and the 13% transaction-services growth line mixes domestic and cross-border.
• Ex-refund retail margins. Each retailer could disclose this and mostly has not.

Nobody can know:

• Whether the de minimis regime survives to July 2027, because it depends on a political decision not yet made.
• Whether agent-mediated purchasing becomes a dominant behaviour. There is no analogous transition with a reliable base rate; social commerce transferred to China and not to the West, and nobody predicted which way that would go either.
• The September 16, 2026 FOMC decision, which falls one day after this research date.

12. Scenarios to 2030

Base. E-commerce grinds to roughly 22-24% of US retail by 2030 at ~0.8pp a year. Retail media consolidates into an Amazon-Walmart duopoly with a scaled second tier of three to five networks and a dead long tail. Agentic discovery becomes a material referral channel; agentic checkout remains a minority of it. Trade-down persists. Stores stabilise as fulfilment and media infrastructure. Falsifiable early indicator: Census e-commerce share progressing 0.7-0.9pp per year through 2027-28 without acceleration.

Upside. Tariff normalisation plus energy mean-reversion restores real income; volume returns to grocery; AI-mediated discovery genuinely expands consideration sets and lifts conversion across the board rather than redistributing it. Retail media re-accelerates on off-site and CTV. Indicator: US grocery volume turning positive year over year, and WARC revising ex-Amazon retail media growth back above 12%.

Downside. Rates rise (the macro brief's three dissenting hawks get their way), leveraged specialty retail fails in volume, energy stays elevated, and the tariff-refund windfall unwinds into a 2027 margin cliff that coincides with an ad-market slowdown. Indicator: major retail bankruptcies exceeding 12 in a calendar year, combined with any large retailer guiding down on advertising revenue.

Disruption. Agent-mediated purchasing crosses roughly 5% of online transactions and retailers are disintermediated from discovery, losing both the ad inventory and the merchandising lever. Price becomes the only variable an agent can compare. Indicator: the first published transaction or active-merchant number from OpenAI, Google or Stripe. That single disclosure is the branch point for this entire scenario.

Regulatory. Marketplace unbundling under FTC v. Amazon or the EU DMA separates marketplace, logistics and advertising, collapsing the alternative-profit model that currently funds retail price investment. Simultaneously, de minimis is restored by executive action and the low-price import channel reopens. Indicator: any remedy phase in FTC v. Amazon reaching structural relief, or a Federal Register notice restoring Section 321 treatment.

Failure. The agentic-commerce infrastructure build is written off the way cashierless stores and Western social commerce were; retail media growth goes negative ex-Amazon; retailers that capitalised network build costs take impairments. Retail reverts to a price-and-convenience business with no adjacent profit pool. Indicator: two consecutive quarters of declining retail media revenue at any top-five non-Amazon network, or public deprecation of ACP or AP2 by their authors.

13. Data gaps and limitations

1. Agentic commerce transaction volume does not exist publicly. No participant has disclosed one. This is the largest single gap in the sector and it is deliberate.
2. Adobe never publishes the AI-referral denominator. Every "AI shopping is exploding" claim in circulation rests on growth rates over an undisclosed base.
3. PDD does not break out Temu. The cross-border trajectory is inferable but not measurable, and both bullish and bearish readings are being published from the same filing.
4. Warehouse automation and retail labour displacement could not be verified. Widely circulated figures (reportedly 500,000-600,000 Amazon roles) trace to reporting on leaked internal documents; the primary CNBC coverage returned HTTP 403 in this research and no Tier A confirmation was obtained. Deliberately excluded from the trend records rather than laundered in at low confidence. This is a real sector trend that this dossier does not cover, and Phase 2 should prioritise it.
5. Shrink and organised retail crime is not covered for lack of credible current data. NRF's National Retail Security Survey was not found updated for 2026, and NRF loss- prevention statistics have previously required public correction. Most search results on this topic were vendor-sponsored security-industry content (Tier C). No claim is made.
6. Coresight store-closure data is paywalled. The 7,900 closures / 5,500 openings figures come from the public preview framing, not from verified line items. Phase 2 licensing budget required.
7. WARC and EMARKETER are both paywalled and are not independent of each other — they observe overlapping advertiser panels. Treating them as two sources would be wrong.
8. NRF returns data is a year stale (October 2025) with no 2026 update found.
9. Kroger's Q2 2026 results could not be retrieved — its IR news listing renders dynamically and returned no content. Several IR sites (Target, Shopify, Instacart) required redirect-following; SEC EDGAR Archives is the more reliable route.
10. CBP's de minimis page returned HTTP 403 to automated fetching; de minimis volume statistics were obtained via secondary reporting of CBP figures, not from CBP directly.
11. Shein is effectively unmeasurable. Private, no verified 2026 financials, user numbers or pricing data at Tier A or B.
12. Non-English coverage is thinner than ideal. China is covered via NBS and Xinhua English releases. No Japanese, Korean, Indian or Brazilian primary sources were consulted within the search budget, and India in particular (quick commerce, ONDC) is a material blind spot.
13. Conflicting figures recorded rather than resolved: US versus UK online share (definitional); EU parcel volumes 4.6bn versus 5.9bn (year and unit); tariff household cost versus measured core-goods CPI (incidence); retail media accelerating versus decelerating (aggregate versus leader). All are in contradictions[].
14. Core CPI at 2.4% versus the macro brief's core PCE at ~3.3% is an unusually wide and unusual-direction gap (core CPI normally runs above core PCE). Not resolved here; flagged for the orchestrator as a possible cross-sector issue.

14. Ranking scorecard

15. Sources

1. Quarterly Retail E-Commerce Sales, 2nd Quarter 2026 — US Census Bureau — https://www.census.gov/retail/mrts/www/data/pdf/ec_current.pdf — 2026-08-18 — A
2. Advance Monthly Sales for Retail and Food Services, July 2026 — US Census Bureau — https://www.census.gov/retail/marts/www/marts_current.pdf — 2026-08-14 — A
3. Consumer Price Index Summary, August 2026 — US Bureau of Labor Statistics — https://www.bls.gov/news.release/cpi.nr0.htm — 2026-09-11 — A
4. Walmart Q2 FY2027 Earnings Release — Walmart Inc. — https://stock.walmart.com/financials/quarterly-results/default.aspx — 2026-08-20 — A
5. Amazon.com Announces Second Quarter 2026 Results (EX-99.1) — Amazon.com Inc. via SEC EDGAR — https://www.sec.gov/Archives/edgar/data/1018724/000101872426000024/amzn-20260630xex991.htm — 2026-07-30 — A
6. Target Corporation Reports Second Quarter Earnings — Target Corporation — https://corporate.target.com/press/release/2026/08/target-corporation-reports-second-quarter-earnings — 2026-08-19 — A
7. Shopify Announces Second Quarter 2026 Financial Results — Shopify Inc. — https://www.shopify.com/investors — 2026-08-05 — A
8. Instacart Announces Second Quarter 2026 Financial Results — Maplebear Inc. — https://investors.instacart.com/news-releases/news-release-details/instacart-announces-second-quarter-2026-financial-results — 2026-08-06 — A
9. PDD Holdings Announces Second Quarter 2026 Unaudited Financial Results — PDD Holdings Inc. — https://investor.pddholdings.com/news-releases/news-release-details/pdd-holdings-announces-second-quarter-2026-unaudited-financial — 2026-08-24 — A
10. Council gives final green light to new customs duty rules for small parcels — Council of the European Union — https://www.consilium.europa.eu/en/press/press-releases/2026/02/11/council-gives-final-green-light-to-new-customs-duty-rules-for-small-parcels/ — 2026-02-11 — A
11. Guidance and legal text on temporary flat fee on low-value imports — European Commission, DG TAXUD — https://taxation-customs.ec.europa.eu/news/guidance-and-legal-text-temporary-flat-fee-low-value-imports-which-will-apply-until-1-july-2028-2026-06-08_en — 2026-06-08 — A
12. Retail sales, Great Britain: July 2026 — UK Office for National Statistics — https://www.ons.gov.uk/businessindustryandtrade/retailindustry/bulletins/retailsales/latest — 2026-08-21 — A
13. China's retail sales of goods, services up 2.5 pct in first eight months — Xinhua / NBS China — https://english.news.cn/20260915/e06c2516bca24281bd08742765b49f45/c.html — 2026-09-15 — A
14. Total Retail Sales of Consumer Goods in the First Half of 2026 — National Bureau of Statistics of China — https://www.stats.gov.cn/english/PressRelease/202607/t20260717_1964156.html — 2026-07-16 — A
15. Supreme Court Tariff Ruling: IEEPA Revenue and Potential Refunds — Penn Wharton Budget Model — https://budgetmodel.wharton.upenn.edu/p/2026-02-20-supreme-court-tariff-ruling/ — 2026-02-20 — A
16. Supreme Court Strikes Down IEEPA Tariffs: What Importers Need to Know Now — Holland & Knight LLP — https://www.hklaw.com/en/insights/publications/2026/02/supreme-court-strikes-down-ieepa-tariffs — 2026-02-20 — B
17. Trump Tariffs: Tracking the Economic Impact of the Trade War — Tax Foundation — https://taxfoundation.org/research/all/federal/trump-tariffs-trade-war/ — 2026-09-10 — B
18. Trump wins legal battle to keep cheap imports subject to tariffs — Axios — https://www.axios.com/2026/08/13/trump-de-minimis-tariff-court — 2026-08-13 — B
19. AI traffic surges, but most retail sites are not machine-readable — Adobe — https://business.adobe.com/blog/ai-traffic-surge-retail-sites-not-machine-readable — 2026-04-16 — B
20. Adobe: AI-referred traffic to retail sites doubles in a year — Digital Commerce 360 — https://www.digitalcommerce360.com/2026/06/17/adobe-ai-referred-traffic-to-retail-sites-doubles-in-a-year/ — 2026-06-17 — B
21. WARC: Retail media ad market to top $200 billion as growth slows — The Desk, reporting WARC Future of Commerce Media 2026 — https://thedesk.net/2026/08/warc-retail-media-ad-market-to-top-200-billion-as-growth-slows/ — 2026-08-19 — B
22. Retail Media Ad Spending Forecast H1 2026 — EMARKETER — https://www.emarketer.com/content/retail-media-ad-spending-forecast-h1-2026 — 2026-05-05 — B (paywalled beyond summary)
23. The State of Grocery North America 2026 — McKinsey & Company — https://www.mckinsey.com/industries/retail/our-insights/the-state-of-grocery-north-america — 2026-06-17 — B
24. 2025 Retail Returns Landscape — National Retail Federation / Happy Returns — https://nrf.com/research/2025-retail-returns-landscape — 2025-10-15 — B
25. US Store Openings and Closures Midyear 2026 Review and Outlook — Coresight Research — https://coresight.com/research/us-store-openings-and-closures-midyear-2026-review-and-outlook-declining-closures-stabilize-the-market-and-drive-growth/ — 2026-08-06 — B (paywalled; read from public preview)
26. The running list of major retail bankruptcies — Retail Dive — https://www.retaildive.com/news/running-list-major-retail-bankruptcies/624502/ — 2026-07-10 — B
27. Stripe powers Instant Checkout in ChatGPT and releases the Agentic Commerce Protocol — Stripe — https://stripe.com/newsroom/news/stripe-openai-instant-checkout — 2025-09-29 — A
28. Buy it in ChatGPT — OpenAI — https://openai.com/index/buy-it-in-chatgpt/ — 2025-09-29 — A
29. Announcing the Agent Payments Protocol (AP2) — Google Cloud — https://cloud.google.com/blog/products/ai-machine-learning/announcing-agents-to-payments-ap2-protocol — 2025-09-16 — A
30. Meituan slides into loss in 'milk tea' subsidy war with instant commerce rival Alibaba — South China Morning Post via Yahoo Finance — https://finance.yahoo.com/news/meituan-slides-loss-milk-tea-093000231.html — 2025-11-28 — B
31. Target's Roundel ad revenue climbs as retail sales decline — Digiday (Kimeko McCoy) — https://digiday.com/marketing/ad-revenue-grows-at-target-as-roundel-stays-insulated-from-broader-retailer-struggles/ — 2025-06-02 — B (2025 data; used for historical Roundel context only)
32. 2026 Resale Report (Top 10 Themes) — ThredUp Inc. — https://cf-assets-tup.thredup.com/resale_report/2026/ThredUp_Resale_Report_2026_Top_10_Themes.pdf — 2026 — C (vendor-sponsored; no disclosed methodology; used only as a labelled estimate)
33. Temu-owner PDD books 8% rise in quarterly revenue, misses estimates — BNN Bloomberg / Bloomberg News — https://www.bnnbloomberg.ca/business/company-news/2026/08/24/temu-owner-pdd-books-8-rise-in-quarterly-revenue-misses-estimates/ — 2026-08-24 — B
34. OpenAI Commerce / Agentic Commerce Protocol developer documentation — OpenAI — https://developers.openai.com/commerce/ — accessed 2026-09-15 — A

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