Tools chosen: kalshi_direct claude_news earnings_data code_execution kalshi_related gdelt_news

Sub-questions (Fermi decomposition)

Planner reasoning

eBay's GMV is a slow-moving annual metric; recent years have been roughly flat in the $73-75B range, so $92B for 2026 is a very large jump. The key is to anchor on recent GMV trends, growth rate, and the market's own price.

# Current state This market resolves YES if eBay's full-year 2026 GMV exceeds $92 billion. With Q1 2026 actual GMV at $22.2B and full-year guidance of 7–7.5% FX-neutral growth (ex-Depop), eBay's current trajectory implies a ~$85–87B full-year outcome — well short of the $92B threshold. # Timeline of key events - **2024 FY**: eBay GMV = $74.67B [confirmed, PR Newswire] - **2025 FY**: eBay GMV = $79.57B (+~7% YoY) [confirmed, PR Newswire] - **2025-Q1–Q4 trend**: GMV accelerated from +1% → +6% → +10% → +10% YoY [confirmed, SEC filings] - **2026-04-29**: Q1 2026 earnings: GMV $22.2B, +14% YoY; full-year guidance raised to 7–7.5% FX-neutral GMV growth; Depop deal expected to add ~1pp [confirmed, BigGo Finance/DigitalCommerce360] - **2026-05 (post-earnings)**: UBS cuts price target citing implied H2 2026 deceleration to mid-single digits [reported, Investing.com] --- # Event Will eBay Inc. report above $92 billion gross merchandise volume in full-year 2026? # Outcomes to forecast - **Yes**: 2026 full-year GMV > $92B - **No**: 2026 full-year GMV ≤ $92B # Kalshi market anchor **Current YES price: 8%** | 7-day change: +4pp | 30-day change: 0pp | Avg daily volume: 2,052 contracts | Range: 3–8% over 9 days. The +4pp weekly move likely reflects the Q1 2026 blowout beat, but the market still prices this as low-probability. # Sub-question answers 1. **eBay 2024 and 2025 GMV?** — 2024: $74.67B; 2025: $79.57B (~+7% YoY). [PR Newswire, SEC filings] 2. **Recent YoY GMV growth rate, accelerating?** — YoY growth accelerated through 2025 (Q1: +1%, Q2: +6%, Q3: +10%, Q4: +10%), continuing to Q1 2026 (+14%). Trend is accelerating but H2 2026 is guided to decelerate to mid-single digits per UBS. [SEC filings, Investing.com] 3. **Growth rate required to reach $92B in 2026?** — From 2025 base of $79.57B, requires ~15.6% full-year growth. From Q1 2026 actual ($22.2B), remaining three quarters would need to average ~$23.3B (vs. Q2 guidance of $21.3–$21.7B). [claude_news calculation] 4. **Guidance/analyst forecasts for 2026 GMV?** — Management guides 7–7.5% FX-neutral GMV growth + ~1pp from Depop = ~$85–87B implied. No analyst forecasts close to $92B identified. [BigGo Finance] 5. **Kalshi current price?** — 8% YES. [kalshi_direct] # Key facts (high-confidence, factual) 1. [PR Newswire] 2025 full-year GMV: $79.57B 2. [SEC/BigGo] Q1 2026 GMV: $22.2B (+14% YoY) 3. [BigGo] Full-year 2026 guidance: 7–7.5% FX-neutral GMV growth (ex-Depop) 4. [claude_news] Depop acquisition projected to add ~1pp to FY2026 GMV 5. [Investing.com] UBS: implied H2 2026 deceleration to mid-single digits after Q1 beat 6. [code_execution] At guided 8.5% total growth: 2026 GMV ≈ $86.4B — ~$5.6B short of threshold 7. [code_execution] Even at 10% sustained growth, 2026 GMV ≈ $87.5B; $92B requires ~15.6% growth 8. [code_execution] Monte Carlo using 2021–2024 historical distribution: P(>$92B) ≈ 0.14% # Cross-market signals - **Kalshi related**: Only market found is this one (KXEBAYA-28JANGMV-92000000000.0) at 8% - **Polymarket**: No data found - **Sportsbook implied**: N/A # Analyst opinions and speculation - UBS: negative on H2 deceleration; cut price target post-Q1 [Investing.com] - Street sentiment "incrementally more constructive" but no one forecasting near $92B [SimplyWallSt] - Q1 2026 beat driven by collectibles/motors/fashion (+24%), may not sustain at same pace # Directional lean per outcome - **Yes ($92B+)**: Supporting: Q1 2026 +14% beat, accelerating momentum, Depop addition, strong focus categories. Opposing: Implied FY guidance only 7–7.5%, H2 deceleration expected, threshold requires 15.6% FY growth vs. guided 8–8.5%, $92B exceeds all organic historical records, UBS flagging deceleration. - **No (≤$92B)**: Strong case — management guidance, analyst consensus, and trajectory all point to ~$85–87B; threshold is ~$5–7B above consensus estimates. # Gaps / unknowns - FX tailwinds (USD weakening could boost as-reported GMV above FX-neutral guidance) - Depop deal upside if it closes earlier or exceeds 1pp contribution - Q2–Q4 2026 actual results not yet known - Potential large M&A beyond Depop # Calibration anchors - **Kalshi current YES price: 8%** (primary anchor) - Historical Monte Carlo: ~0.14% (purely statistical, excludes regime change) - Fundamental scenario: ~$85–87B central estimate; $92B requires ~2σ upside surprise - The 8% Kalshi price is already generous relative to pure historical base rates; the Q1 2026 beat partially justifies uplift from ~3–4% to ~6–8%, but guidance math makes >$92B still very unlikely (~5–8% range seems defensible)

1. Both forecasters under-weighted the FX tailwind gap. The brief explicitly notes "FX tailwinds (USD weakening could boost as-reported GMV above FX-neutral guidance)" as an unquantified upside, yet neither forecaster attempts to size this. Management guidance is FX-neutral, so a materially weaker USD in H2 2026 could mechanically lift reported GMV by several percentage points above the guided 7–7.5%, partially closing the ~$5–7B gap to threshold. 2. The Q1 2026 run-rate math is under-explored. Q1 2026 GMV was $22.2B; if that pace continued for all four quarters, annualized GMV would be ~$88.8B — still short but much closer to $92B than the guided central case. Neither forecaster directly stress-tested a scenario where Q2–Q4 growth merely sustains at Q1's 14% pace rather than decelerating as UBS projects, which would put full-year GMV around $90–91B and make the $92B threshold plausible with modest further upside. 3. Both forecasters essentially defer to the Kalshi anchor (8%) but Forecast 2's rationale for going to 7% is internally inconsistent — it cites the guidance math as "more difficult than market-implied odds suggest" yet only moves 1pp below the market, implying either the market is nearly correct or the rationale doesn't fully justify the adjustment. 4. Neither forecaster adequately addressed the M&A wildcard. The brief explicitly flags "Potential large M&A beyond Depop" as an unknown; a single sizable marketplace acquisition in H1 2026 could add multiple billions in GMV. Given eBay's stated strategic posture, this tail scenario warrants at least a sentence of explicit probability assignment rather than complete omission. 5. The Monte Carlo estimate of ~0.14% from the brief is dramatically lower than both forecasts' 5–7%, yet neither forecaster justifies why a 35–50x departure from the purely statistical base rate is warranted. The Q1 2026 beat and acceleration are cited qualitatively, but the magnitude of the gap between 0.14% and 5–7% deserves explicit regime-change reasoning.

6% (65% confidence)

Yes: 6% No: 94%

Reaching $92B requires ~15.6% full-year growth from the $79.57B base, far above guided 7–7.5% FX-neutral plus ~1pp Depop, implying a ~$85–87B central case. Even sustaining Q1's +14% pace all year reaches only ~$88.8B, so the threshold needs upside beyond the optimistic run-rate. FX tailwinds and M&A provide modest tail upside justifying staying near the Kalshi 8% anchor rather than the ~0.14% statistical base rate. I settle slightly below market at 6%.

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