Tools chosen: polymarket_direct kalshi_related polymarket_related fred claude_news code_execution

Sub-questions (Fermi decomposition)

Planner reasoning

This market resolves on the combination of Fed decisions across the June, July, and September 2026 FOMC meetings. The key drivers are per-meeting probabilities of cut/pause/hike (from fed funds futures and prediction markets), the macro trajectory (inflation, labor), and Fed communication. I will anchor on the Polymarket price, triangulate with Kalshi's per-meeting Fed markets, pull macro data from FRED, search news for FOMC guidance, and use code execution to combine per-meeting probabilities into combination probabilities.

# Current state June (6/17) and July (7/29) FOMC decisions are both **confirmed holds** at 3.50%–3.75% (CNBC, StockTitan, BingX) — i.e., the first two of the three decisions are already identical. Resolution of this market therefore now hinges entirely on the September 15-16 decision: "Yes" requires September to differ from the June/July hold (a hike or cut), while "No" requires September to also be a hold. Market pricing as of Aug 31, 2026 leans toward a September hike (~55-66% per CME FedWatch/Polymarket proxies), tilting this market toward "Yes," but odds have swung 33%-66% within the past month. # Timeline of key events - **2026-06-17** (confirmed): FOMC votes 12-0 to hold rates at 3.50%-3.75%; dot plot turns hawkish (median rate view flips from a cut to a hike vs. March); Kevin Warsh's first meeting as Fed Chair. [cnbc.com, stocktitan.net] - **2026-06 SEP** (confirmed): Median dot plot rate revised to 3.8% from 3.4% in March; most hawkish member sees appropriate rate near 4.5%. [tradingkey.com] - **2026-07-29** (confirmed): FOMC votes 9-3 to hold at 3.50%-3.75% — most divided vote since 2016; Hammack, Kashkari, Logan dissent in favor of a hike. Wall Street desks broadly abandon 2026 rate-cut calls. [cnbc.com, bingx.com] - **2026-08-07** (reported): Weak July jobs report causes Sept-hold odds to jump to 60% (CME) from ~33% a week earlier; Kalshi traders price 65% hold. [cnbc.com] - **2026-08-2x (Jackson Hole)** (reported): Warsh's hawkish address pushes Sept hike odds back to 57%. [optionstradingiq.com] - **2026-08-31** (reported): CME FedWatch shows 66% probability of a 25bp September hike; PCE inflation reported at 3.7% YoY / 4.1% annualized 6-month pace; Barclays forecasts two 2026 hikes (Sept + Dec). [forbes.com] # Event Will the Fed's June, July, and September 2026 FOMC decisions NOT all be identical (i.e., at least one meeting differs from the others)? # Outcomes to forecast - Yes (decisions differ across the three meetings) - No (all three meetings produce the same decision — currently: hold/hold, so No requires Sept hold too) # Kalshi market anchor No Kalshi-direct price was returned for this specific ticker in research (kalshi_direct tool absent from raw research; kalshi_related search returned only unrelated long-dated fed-funds-level markets, not this event). **Best available anchor is Polymarket's identical-question market: current YES price 56.5%, up +24.5% over 7 days, roughly flat (-1.5%) over 30 days, range 9.5%-63%, $350K volume** — this should be treated as the working consensus proxy until a genuine Kalshi price is confirmed. # Sub-question answers 1. **CME/futures-implied probabilities per meeting** — June and July are now historical (both holds, confirmed). For September: CME FedWatch shows ~66% hike probability as of Aug 31 (Forbes); Polymarket's September-specific markets price ~54.5% hike(25bp), ~43.5% no-change, ~0.8% cut, ~0.65% hike(50bp+) — implying ~55% probability September differs from June/July. 2. **FOMC statement/dot plot/Powell(Warsh) signal** — June dot plot turned hawkish (median 3.8%, up from 3.4% in March); July had three dissents favoring a hike; Warsh (new Chair) pushing shorter, less forward-guidance-heavy statements. Signal points toward hike bias into September, not further cuts. [cnbc.com, tradingkey.com] 3. **Inflation/labor readings** — Core PCE (PCEPILFE) has been rising steadily each month through July 2026 (130.66 vs 126.95 in Sept 2025); reported PCE YoY ~3.7%, 6-mo annualized ~4.1% — well above 2% target (Forbes). Unemployment (UNRATE) has drifted down slightly to 4.1% (July 2026) from 4.4-4.5% late 2025; payrolls (PAYEMS) roughly flat/modestly growing. Combination = sticky/rising inflation + resilient labor market → supports hawkish tilt. 4. **Kalshi individual FOMC markets vs. Polymarket** — Direct Kalshi per-meeting FOMC data not retrieved in this research pass; Polymarket September sub-markets (hike25 54.5%, no-change 43.5%, cut25 0.55%, hike50 0.65%, cut50 0.25%) are internally consistent (~100% sum) and align with the parent market's 56.5% Yes price. Kalshi-specific comparison is a research gap. 5. **Historical persistence of consecutive Fed decisions** — Code-execution analysis of ~2000-2024 data (204 overlapping 3-meeting triplets) finds all-three-identical occurred 70.6% of the time; mixed (two-same/one-different) 29.4%; all-three-strictly-different (cut+hold+hike) **never observed (0%)** — the Fed has never oscillated direction within 3 consecutive meetings historically. 6. **Catalysts before Sept 2026** — New Fed Chair Kevin Warsh (as of June 2026) shifting communication style and reportedly hawkish (Jackson Hole speech); persistent above-target inflation; a weak July jobs report temporarily reversed hike odds in early August before Jackson Hole reversed again. No fiscal/financial-stress shock identified in research. # Key facts (high-confidence, factual) 1. [CNBC] June 17, 2026: FOMC held 12-0 at 3.50%-3.75%; hawkish dot-plot shift. 2. [CNBC/BingX] July 29, 2026: FOMC held 9-3, three dissents favoring a hike. 3. [FRED] Core PCE index rising monthly through July 2026; unemployment 4.1% (July 2026), down from 4.4-4.5% late 2025. 4. [Forbes] Aug 31, 2026: CME FedWatch shows 66% probability of September 25bp hike. # Cross-market signals - Kalshi related: no direct data for this ticker; unrelated long-dated fed-funds-level markets show elevated hawkish repricing over 7-30 days (e.g., 2036 fed-funds->4.75% jumped to 45%). - Polymarket: parent market Yes = 56.5% (up sharply +24.5% in 7 days); September sub-markets imply ~55% hike, ~43.5% hold, negligible cut — consistent with parent market pricing. - Sportsbook implied: N/A (not applicable to this event). # Analyst opinions and speculation - Barclays forecasts two 2026 hikes (Sept + Dec), reflecting a broad Wall Street reversal from earlier cut expectations (CNBC/BingX). - Odds have been highly volatile (33%-66% hike probability within a single month), reflecting genuine data-dependent uncertainty (optionstradingiq.com). # Directional lean per outcome - **Yes** (decisions differ): Supported by hawkish dot plot, rising core PCE, three July dissents favoring a hike, Warsh's hawkish Jackson Hole tone, and ~55-66% CME/Polymarket-implied September hike probability. Also matches Polymarket's 56.5% current price. - **No** (all three identical/hold): Supported by historical persistence base rate (70.6% of triplets are all-identical), a temporary hold-odds spike to 60-65% after the weak July jobs report, and Polymarket's September "no-change" market still pricing 43.5%. # Gaps / unknowns - No confirmed Kalshi-direct price for this exact ticker — reliance on Polymarket as sole consensus proxy is a meaningful gap. - No Kalshi per-meeting FOMC market data retrieved for direct comparison/arbitrage check. - September 16 decision remains genuinely unresolved; odds have swung dramatically within weeks. # Calibration anchors - Polymarket YES price (proxy anchor): 56.5%, 7-day trend +24.5%. - September-specific Polymarket sub-market: hike ~54.5%, no-change ~43.5%. - Historical base rate: ~71% of 3-meeting FOMC sequences are fully identical; ~29% mixed; ~0% fully divergent (cut+hold+hike).

1. Both forecasts (0.56, 0.59) cluster tightly around the Polymarket proxy without independently weighing the historical base rate — the brief states "all-three-identical occurred 70.6% of the time" historically, yet neither forecaster explains why this specific cycle should deviate so far from that base rate toward "differ" (Yes), especially given June/July already show growing hawkish momentum but still ended in holds both times. 2. Neither forecaster flags the sizeable divergence between CME FedWatch (66% hike) and Polymarket September sub-market (54.5% hike) — a ~10-12pt gap between two "consensus" sources that both cite as anchors; simply averaging/blending them without addressing why they disagree is a analytical gap. 3. The Polymarket parent price is "up +24.5% over 7 days" — a large short-term swing that both forecasters treat as a stable anchor rather than flagging recency/momentum risk; given the brief notes odds "swung 33%-66% within the past month," anchoring near a number that itself moved 24.5 points in a week deserves more explicit discounting or a wider confidence interval. 4. Neither model explicitly addresses the "no genuine Kalshi price" gap noted in the brief — both silently substitute Polymarket 1:1 as if structurally identical to the Kalshi contract, when liquidity, resolution criteria, or timing differences between platforms could matter for calibration against the actual Kalshi YES price this question presumably anchors to. 5. Both rationales omit discussion of intervening data catalysts (August jobs report, September CPI, additional FOMC commentary) that could still shift September odds before the meeting — given the brief's own evidence that a single weak jobs report swung odds from 66%→33%→60% within weeks, a static point estimate understates the real uncertainty remaining until Sept 16. 6. Neither forecast discusses the asymmetry within "Yes": a hike is ~54-66% likely per proxies, but the tiny cut probability (~0.8-1%) is functionally irrelevant, yet lumping "any change" into one Yes bucket masks that this market is essentially a binary hike-vs-hold bet — a cleaner statement of this would strengthen (not necessarily change) the probability estimate's transparency.

57% (62% confidence)

Yes: 57% No: 43%

June and July are confirmed holds, so this reduces to a binary hike-vs-hold bet on September 16. Market proxies cluster in the 55-66% hike range (Polymarket sub-market ~54.5%, parent 56.5%, CME FedWatch 66%), supported by strong hawkish fundamentals: rising core PCE (~3.7% YoY), three July dissents favoring a hike, a hawkish June dot plot, and Warsh's Jackson Hole tone. The critique correctly notes the 71% historical persistence base rate and extreme recent pricing volatility (33%-66% swings), which warrant staying near the lower end of the proxy range rather than moving above it as Forecast 2 did. I land at 0.57 — close to the Polymarket anchor, giving modest extra weight to CME's higher hike odds while respecting the genuine data-dependent uncertainty remaining before September 16.

Total pipeline time: 185.6s