Tools chosen: kalshi_direct kalshi_related polymarket_related fred claude_news code_execution

Sub-questions (Fermi decomposition)

Planner reasoning

This is a Kalshi market on the Fed hiking by more than 25bps at the December 2027 meeting — a historically rare action (>25bp hikes only occur during aggressive tightening cycles like 2022). The key drivers are the current policy stance/trajectory, inflation and labor market data, FOMC projections (dot plot), and market-implied rate paths. The market price itself and sibling contracts in the same event provide the strongest anchors.

# Current state The Kalshi contract asks whether the Fed will hike by **more than 25bps** (i.e., ≥50bps) at its December 2027 meeting — not whether it hikes at all. As of early Sept 2026, the Fed funds target is 3.50–3.75% after five consecutive holds (last cut Dec 2025), but new Chair Kevin Warsh has turned hawkish and markets/analysts are now pricing standard 25bp hikes possibly starting as soon as Sept/Dec 2026 — not jumbo (>25bp) moves, and not specifically at the Dec 2027 meeting. # Timeline of key events - 2025-12: Fed's last rate cut, bringing target to 3.50–3.75% (confirmed, FRED/claude_news). - 2026-01 to 2026-07: Fed holds rate steady across five consecutive meetings at 3.50–3.75% (confirmed, claude_news). - 2026-05-22: Kevin Warsh sworn in as Fed Chair, seen as hawkish (confirmed). - 2026-06: FOMC June SEP dot plot: 2027 median unchanged at 3.50–3.75%; dispersion shows 5 dots at 3.75–4.00%, 3 above, 10 below (reported, Yahoo/Bondsavvy). - 2026-07-29: FOMC holds; 3 members dissent in favor of a 25bp hike, 9-3 vote (confirmed, Chase). - 2026-08-28: Warsh's hawkish Jackson Hole speech raises September 2026 hike odds to a "coin flip" (reported, CNBC). - 2026-08-31: Fed funds futures price ~60% odds of a 25bp hike in September 2026; Deutsche Bank forecasts 50bps of hikes in 2026 (Sept + Dec, 25bps each); J.P. Morgan pulls forward its "next hike" call to Dec 2026 (reported, CNBC/JPM). - No source cites any forecast, dot, or futures pricing implying a single hike >25bps at any meeting, including Dec 2027. # Event Will the Fed hike rates by more than 25bps at its December 2027 FOMC meeting? (KXFEDDECISION-27DEC-H26) # Outcomes to forecast Yes / No (Yes = hike >25bps on 2027-12-08) # Kalshi market anchor **Current YES price: 7%** (as of latest data). 30-day trend: +6pts (rising, reflecting hawkish Warsh turn); 7-day trend: -1pt (slight pullback). Average daily volume ~3,208 contracts — moderate liquidity. Historical range for this contract: 1%–49% (implies a brief speculative spike, now settled near 7%). # Sub-question answers 1. **Kalshi probability/trend** — 7% currently; up sharply (+6pts) over 30 days on Warsh hawkishness, but down slightly (-1pt) over the last week. [kalshi_direct] 2. **Current fed funds rate & direction** — Target range 3.50–3.75% (DFEDTARU/DFF, FRED); Fed held for 5 straight meetings after last cutting in Dec 2025; direction has shifted toward tightening bias post-Warsh, with dissents favoring 25bp hikes emerging in July 2026. [FRED, claude_news] 3. **SEP/dot plot & futures implied path** — June 2026 SEP median for end-2027 unchanged at 3.50–3.75% (no net hiking priced by SEP median), though dot dispersion shows a hawkish tail (5 dots at 3.75–4.00%, 3 above). Futures imply gradual rise to ~3.9% by Nov 2026 and ~4.2% by Aug 2027, consistent with a few 25bp moves, not jumbo hikes. [claude_news/Yahoo/Bondsavvy] 4. **Inflation readings & reacceleration risk** — CPI up modestly (Jul 2026: 332.8, y/y trend rising); core PCE index rising steadily (130.7 Jul 2026 vs 127.9 Dec 2025), suggesting mild reacceleration; 10Y breakeven inflation expectations stable/moderate at 2.31% (Aug 2026), not signaling a spike. Warsh explicitly flagged concern that underlying inflation trends haven't "meaningfully improved." [FRED, CNBC] 5. **Historical base rate** — Unconditional probability of a >25bp hike at any given FOMC meeting (1994–2024) ≈4.4%; conditional on being ~2 years into an easing/hold regime (analogous to Dec 2027 setup), ≈1–3%, since jumbo hikes historically only occur mid-cycle in already-running rapid-tightening episodes (1994, 2022), not as a standalone move. [code_execution] 6. **Related Kalshi/Polymarket contracts** — Polymarket "Fed rate hike in 2026?" priced at 71.5% YES (broad, any-hike-in-2026 question, not >25bp specific) — confirms market expects standard hikes are likely soon, but says nothing about magnitude. Kalshi long-dated fed-funds-level markets (2034-36) show rising probabilities of higher terminal rates, consistent with a hawkish repricing, but none specify >25bp single-meeting moves. [polymarket_related, kalshi_related] 7. **Fed official/forecaster commentary on hikes for 2027** — Deutsche Bank expects 25bp hikes at Sept and Dec 2026 (50bps total for the year); J.P. Morgan moved its next-hike forecast to Dec 2026. No forecaster or Fed official cited expects a >25bp single move at any 2026/2027 meeting — consensus is incremental 25bp steps. [claude_news] # Key facts (high-confidence, factual) 1. [FRED] Fed funds target 3.50–3.75% as of Aug 2026; unchanged since Dec 2025 cut. 2. [claude_news] Warsh (hawkish) became Chair May 2026; July 2026 FOMC saw 3 dissents favoring a 25bp hike. 3. [claude_news] June 2026 SEP median for end-2027 = 3.50–3.75% (no net hike priced by median dot). 4. [CNBC] Aug 28 2026 Jackson Hole speech raised Sept 2026 hike odds to ~60% (25bp move). 5. [code_execution] Only 11 of 248 FOMC meetings (1994–2024) saw a >25bp hike; all occurred within already-active rapid-tightening cycles (1994, 2022). # Cross-market signals - Kalshi related: Long-dated fed-funds-level contracts (2034–36) show rising probabilities of higher terminal rates, but no signal on jumbo single-meeting moves. - Polymarket: "Fed rate hike in 2026?" at 71.5% YES — supports hikes are coming, but standard-size, not >25bp. - Sportsbook implied: N/A. # Analyst opinions and speculation - Deutsche Bank: expects 25bp hikes at both Sept and Dec 2026 (cumulative 50bps for the year, not one jumbo move). - J.P. Morgan: pulled forward next hike call to Dec 2026, still 25bp increments. - No analyst forecasts a >25bp hike at any meeting through 2027. # Directional lean per outcome - **Yes (>25bps hike Dec 2027)**: Supporting — hawkish Warsh regime, dissents favoring hikes, rising inflation trend, Kalshi price up 6pts in 30 days. Opposing — SEP median flat for 2027, all forecaster/futures pricing points to only 25bp increments, historical base rate for isolated jumbo hikes ~1-3%, and Dec 2027 is 15+ months away with hiking cycle (if any) more likely front-loaded into 2026-27 in 25bp steps. - **No**: Strongly favored — nearly all evidence (dot plot, futures, analyst forecasts, historical base rates) supports standard-size or no hikes at Dec 2027 specifically. # Gaps / unknowns - No direct SEP dot-plot data granularity for the Dec 2027 meeting specifically (only annual median). - Unclear how the current hawkish momentum (Sept 2026 hike odds) evolves over 15 months to Dec 2027 — much can change (elections, inflation shocks, recession risk). - No data on why Kalshi price spiked to 49% historically (data range) — could reflect illiquid/thin-volume noise early in contract life. # Calibration anchors - Kalshi current YES price: **7%** (anchor). - Historical unconditional base rate for >25bp hike at any FOMC meeting: ~4.4%; conditional (analogous regime) estimate: ~1–3% (code_execution). - Precedent: only 1994 and 2022 cycles saw jumbo hikes, both after cycles were already underway with multiple prior hikes — no isolated single->25bp meeting has occurred from a standing start.

1. Both forecasts converge tightly around 5-6%, essentially just shading slightly below the 7% Kalshi anchor without independently justifying why the market might be *overpricing* relative to the ~1-3% conditional base rate—neither explains why they didn't converge closer to the base rate itself given the brief explicitly flags this as the more analogous reference class (jumbo hikes only occur mid-cycle, not from a standing start like Dec 2027 would be). 2. Neither forecast grapples with the 15-month time horizon and the brief's explicit gap: "much can change (elections, inflation shocks, recession risk)" — this is a long runway for the hawkish Warsh regime to escalate into an actual rapid-tightening cycle (the 1994/2022 precedent condition), which could push true probability higher than a static base-rate read suggests, yet both landed on nearly identical low numbers without exploring this compounding/escalation path in more depth. 3. Both forecasters ignore the historical volatility clue: the contract's "historical range 1%–49%" suggests real uncertainty or event-driven repricing is possible over the contract's life, but neither addresses whether current 7% pricing reflects mature, well-calibrated market beliefs or still-thin/early liquidity (~3,208 avg daily volume) that could be systematically mispriced. 4. Neither rationale addresses the mechanical possibility that if the Fed does embark on consecutive 25bp hikes (Sept/Dec 2026, per Deutsche Bank), by Dec 2027 the FOMC could be several hikes into a cycle and facing a data-dependent catch-up scenario (e.g., delayed response to inflation surprise) that historically is exactly when jumbo hikes like 1994/2022 occurred — this pathway deserves more explicit weight than a passing mention of "if hiking begins... Dec 2027 could be mid-cycle." 5. Both forecasts are nearly identical (5% vs 6%) despite claiming independent reasoning, raising a concern about anchoring bias — both essentially just nudged slightly below Kalshi's 7% without meaningfully engaging with why the market itself put it at 7% rather than closer to the 1-3% base rate, leaving open whether the market is pricing additional tail/optionality value that the forecasters are underweighting. 6. The brief notes "no direct SEP dot-plot data granularity for the Dec 2027 meeting specifically," yet both forecasters treat the SEP median as strong evidence against jumbo hikes without acknowledging this data limitation explicitly in their confidence calibration (0.62 and 0.68 seem arbitrarily assigned without clear derivation from the evidence weighting).

5% (65% confidence)

Yes: 5% No: 95%

Both forecasts and the Kalshi anchor (7%) cluster in a narrow range, and the critique's strongest points cut in opposite directions: the conditional base rate (~1-3%) argues for pulling YES below the market, while the escalation pathway (hikes starting in 2026 could put the Fed mid-cycle by Dec 2027, the exact condition under which 1994/2022 jumbo hikes occurred) argues for retaining tail risk over the 15-month horizon. These roughly offset. No forecaster, futures pricing, or SEP dot supports a >25bp single move at any meeting, and the SEP median holds end-2027 flat, so meaningful upside from 7% is unjustified. I settle at 5% YES — modestly below the market to reflect the strong base-rate and consensus evidence, but above the pure conditional base rate to account for the plausible mid-cycle escalation scenario under a hawkish Warsh Fed.

Total pipeline time: 154.1s