Scan: Pete Hegseth out as Secretary of Defense by December 31?

date	predicted	market price	confidence
2026-08-17	24%	24%	59%
2026-08-03	22%	20%	50%

1. Planner Opus 5

Tools chosen: polymarket_direct polymarket_related kalshi_related claude_news gdelt_news wikipedia code_execution

Sub-questions (Fermi decomposition)

What is the current Polymarket YES price and recent price trajectory for Hegseth leaving by Dec 31, 2026, and how has it moved during recent news cycles?
Does Kalshi (or other Polymarket markets) price the same or a shorter-horizon 'Hegseth out' question, and does the cross-venue price differ?
What are the active investigations/hearings threatening Hegseth (Caribbean boat strikes/'double-tap' order, DoD IG Signal report, staff turnover), and what are their expected timelines relative to Dec 31, 2026?
What has Trump and the White House said most recently about confidence in Hegseth, and are there credible reports of a replacement search or planned reassignment?
What is the historical base rate for a US Secretary of Defense (or Trump-era Cabinet secretary) departing within a given ~13-month window, especially in a midterm-election year?
Are there scheduled events (midterm elections, potential post-election Cabinet shakeup, Senate votes) that concentrate departure risk in specific months of 2026?

Planner reasoning

This is a Polymarket political-tenure question resolving Dec 31, 2026, so the Polymarket price is the primary anchor and Kalshi may have a parallel 'Hegseth out' market for cross-venue triangulation. The key drivers are current scandal intensity (Caribbean boat-strike 'double-tap' investigations, congressional hearings), Trump's public backing, and the base rate of Cabinet secretary departures within a ~13-month window during a Trump term.

2. Research

tool	status	time	items	summary
polymarket_direct	OK	0.3s	1	## This Market's Polymarket Data Pete Hegseth out as Secretary of Defense by December 31? - Current price (probability): 19.50% - 7-day price change: -2.50% - 30-day price change: -1.00% - Total volume: $353,007 (USD notional) - Price range: 15.50% - 31.00% - Data points: 91 days
polymarket_related	OK	3.2s	0	Scanned 100 active Polymarket markets, kept 0 matches. keyword 'Hegseth': 0 markets \| keyword 'Secretary of Defense': 0 markets \| keyword 'cabinet out': 0 markets \| keyword 'Trump cabinet member out': 0 markets
kalshi_related	OK	3.1s	2	2 related markets / summaries. keyword 'Hegseth': no matches \| keyword 'Secretary of Defense': ok \| keyword 'cabinet': ok
claude_news	OK	29.4s	13	Based on research (last ~30 days as of Aug 24, 2026): - Trump publicly defended Hegseth (Aug 6-7): After reports of a Camp David clash over munitions shortages related to the Iran war, Trump called reports of friction "treasonous" and said "I think he's actually one of my best." [politicalw
gdelt_news	OK	225.9s	12	GDELT: 12 articles across 3 queries (lookback=45d). 'Hegseth resign fired Secretary of Defense': error GDELT rate-limited after retries (429) \| 'Hegseth replacement Pentagon shakeup': error GDELT rate-limited after retries (429) \| 'Hegseth boat strike investigation hearing': 12 hits
wikipedia	OK	0.1s	3	Fetched 3 Wikipedia entries (0 missing pages).
code_execution	OK	55.2s	0	## Base Rate Analysis: SecDef Departure Probability Historical SecDef tenure data (28 completed tenures, 1947–2025): - Mean tenure: 32.7 months; Median: 24.0 months - Unconditional base rate — fraction of all SecDefs whose entire tenure lasted ≤13 months: 17.9% (5/28: Richardson, Marshall

3. Evidence Brief Sonnet, 7021 chars

# Current state As of the latest research (~Aug 24, 2026), Pete Hegseth remains U.S. Secretary of Defense. Trump has publicly and explicitly reaffirmed support ("I think he's actually one of my best") after reports of a Camp David clash over Iran-war munitions shortages, and stated no Pentagon vacancy exists. No resignation, firing, or successor nomination has occurred; Hegseth continues normal SecDef duties (Oshkosh manufacturing tour, Aug 24). # Timeline of key events - 2025-01-25: Hegseth confirmed as SecDef via VP tie-breaking vote (confirmed, Wikipedia). - 2025 (ongoing): Signal group-chat leak, Caribbean/Yemen "boat strike" alleged-war-crimes controversy, testosterone-screening mandate become recurring controversies (confirmed, Wikipedia — background, not new). - 2026-08-05: WaPo reports Trump-Hegseth clash at Camp David over Iran missile/munitions depletion (reported). - 2026-08-06/07: Trump publicly defends Hegseth, calls friction reports "treasonous," denies vacancy despite DeSantis-replacement question (confirmed statements). - 2026-08-11: DoD IG-linked report calls civilian-protection efforts "largely inactive"; separate unreleased report to Congress reportedly finds hundreds of civilian casualties from strikes (reported, The Intercept). - 2026-08-12: Pentagon confirms 153 civilians killed in 2025 vs. 2 in 2024 (confirmed figure, reported widely). - 2026-08-17: Reporting shows boat-strike campaign expanding to land operations in Latin America (reported). - 2026-08-18: SCMP sources claim Trump may be positioning Hegseth as scapegoat for stalled Iran war (rumored, single-sourced). - 2026-08-18: Senate hearing — senator presses Hegseth/Caine on keeping military out of midterms (confirmed hearing occurred). - 2026-08-20: Senate Veterans Committee sends letter of concern re: Stars and Stripes publisher retirement/staff turnover under Hegseth's DoD (confirmed). - 2026-08-24: Hegseth headlines "Arsenal of Freedom" tour at Oshkosh — signals continued normal operations (confirmed). # Event Will Pete Hegseth cease to be U.S. Secretary of Defense at any point before Dec 31, 2026? # Outcomes to forecast Yes / No # Kalshi market anchor No kalshi_direct data returned for this specific ticker (market appears to be Polymarket-native, hex ticker). Closest Kalshi analog: **"Who will leave Trump's Cabinet next? — Pete Hegseth" (KXCABOUT-26MAY22-PHEG)** at **11%** (down 2pts/7d, down 4pts/30d, range 2–19%, 74 data points). Polymarket's own market for this exact question shows **19.5% YES** (7d: -2.5%, 30d: -1.0%, range 15.5–31%, $353K volume). Treat 19.5% (Polymarket direct) as primary anchor; note ~8.5pt cross-venue gap vs. Kalshi's narrower-outcome proxy. # Sub-question answers 1. **Polymarket trajectory** — Current 19.5%, down from a high of 31% over the observed 91-day window, trending slightly downward (-2.5% 7d, -1% 30d) [polymarket_direct]. 2. **Cross-venue pricing** — Kalshi's "Cabinet out" contract for Hegseth prices 11%, notably lower than Polymarket's 19.5%; a broader Kalshi market "When will a member of Trump's Cabinet leave — Before Oct 2026" is at 38% (down sharply, -16pt/7d and /30d) [kalshi_related]. 3. **Active threats** — DoD IG report calling civilian-protection efforts "inactive," unreleased Congressional report on high civilian casualties, expanding boat-strike/Latin America land campaign, and a Senate hearing on military-midterm neutrality; no impeachment/removal proceeding underway (impeachment market prices <1%) [claude_news, gdelt_news, kalshi_related]. 4. **Trump/WH stance** — Trump explicitly denies any vacancy and praised Hegseth (Aug 6-7), but a single SCMP-sourced report (Aug 18) speculates Trump may scapegoat Hegseth for the Iran war; DeSantis has been floated informally as a hypothetical replacement, not an active nomination [claude_news]. 5. **Base rate** — Historical SecDef base rate for departure within a comparable window is ~7-10% conditional on already having survived ~9 months (code_execution); Trump-term-1 13-month cabinet turnover was ~6.7% (only Tom Price/HHS departed early) [code_execution]. 6. **Scheduled concentration events** — Nov 2026 midterms are a plausible flashpoint (military-neutrality hearing already held); no other statutory Senate votes or forced-departure mechanisms are identified in research [claude_news]. # Key facts (high-confidence, factual) 1. [Wikipedia] Hegseth confirmed Jan 25, 2025; still serving as of Aug 2026. 2. [polymarket_direct] Market YES = 19.5%, trending down. 3. [kalshi_related] Kalshi Hegseth-specific proxy = 11%, also trending down. 4. [claude_news] Trump publicly denied any Pentagon vacancy (Aug 6-7, 2026). 5. [claude_news/theintercept] IG report critical of civilian-harm mitigation under Hegseth (Aug 11). 6. [code_execution] Historical conditional base rate ~7-10% for departure in this remaining window. # Cross-market signals - Kalshi related: Hegseth cabinet-out proxy 11% (declining); broader "any cabinet member leaves before Oct 2026" 38% (declining sharply); cabinet impeachment <1%. - Polymarket: This market itself at 19.5%, declining from 31% peak; no other Polymarket Hegseth markets found. - Sportsbook implied: N/A. # Analyst opinions and speculation - SCMP-sourced (unconfirmed) claim Trump may be considering Hegseth as an Iran-war "scapegoat" (Aug 18) — speculative, single-source, contradicted by Trump's own on-record support days earlier. - Political commentary (politicalwire, rvmnews) frames Trump's defense as unusually forceful, suggesting turmoil but not imminent departure. # Directional lean per outcome - **Yes**: Elevated scrutiny (IG report, civilian casualty data, boat-strike controversy, Camp David clash, scapegoat rumor); declining but still-meaningful market pricing (19.5% Polymarket, 11% Kalshi proxy) reflects real tail risk. - **No**: Trump's explicit, recent, on-record denial of any vacancy; Hegseth continuing normal high-profile public duties (Oshkosh tour); historical base rates (7-10%) below current market pricing; no successor nominated; declining price trend across both venues suggests market cooling on ouster odds. # Gaps / unknowns - No confirmed kalshi_direct price for this exact ticker; relying on Polymarket direct + Kalshi proxy. - Outcome of unreleased Congressional civilian-casualty report and any consequences unclear. - Midterm-related risk (Nov 2026) not yet quantified in any market. - Whether "scapegoat" rumor has legs is unverified (single source). # Calibration anchors - Polymarket YES (primary): 19.5%, declining. - Kalshi Hegseth-proxy: 11%, declining; broader cabinet-departure market 38%, declining sharply. - Historical/base-rate central estimate: ~8-12% (conditional survival-adjusted). - Recommended blended forecast: ~15-20%, weighting market consensus (which incorporates known scandal/controversy risk) slightly above pure base rate given ongoing Iran-war fallout and IG scrutiny, but below Polymarket's historical peak (31%) given Trump's explicit recent public backing.

4. Forecasters Opus 5 + GPT-5.5, in parallel

claude-opus-5

62% conf

Yes	14%
No	86%

Hegseth remains SecDef as of late Aug 2026 with Trump explicitly denying any Pentagon vacancy and publicly praising him days after the reported Camp David clash, and he continues high-profile public duties (Oshkosh tour, Senate hearing). Market anchors bracket the estimate: Polymarket's direct market on this question sits at 19.5% and declining from a 31% peak, while Kalshi's Hegseth cabinet-departure proxy is only 11% and also trending down; historical conditional base rates for a SecDef departing in a ~4-month window are ~7-10%. Real tail risks exist (DoD IG civilian-harm criticism, unreleased congressional casualty report, expanding boat-strike/Latin America campaign, single-sourced SCMP 'scapegoat' speculation, post-midterm reshuffle risk), which justify pricing above the pure base rate. I blend to ~14%, slightly below Polymarket's 19.5% because that venue tends to run rich on political-ouster contracts and both venues are trending down with no successor named.

gpt-5.5

64% conf

Yes	17%
No	83%

Polymarket direct anchors Yes at 19.5% and is drifting down from 31%, which points toward No because market-implied ouster risk has cooled rather than intensified. The Kalshi Hegseth-specific proxy is lower at 11%, and historical conditional SecDef/cabinet departure base rates around 7–10% also point toward No because the current direct market appears somewhat above base-rate fundamentals. Active controversies—the IG/civilian-casualty reports, boat-strike escalation, Camp David clash, and midterm military-neutrality scrutiny—support some Yes tail risk, but Trump’s explicit recent public backing, denial of a vacancy, lack of successor activity, and Hegseth’s continued public duties weigh more heavily. I therefore shade below the 19.5% Polymarket anchor but above the base rate/Kalshi proxy to account for unresolved scandal and scapegoating risk.

5. Devil's Advocate Sonnet

Neither forecaster explicitly models the Nov 2026 midterms as a distinct, dated catalyst within the forecast window — the brief flags a "military-neutrality" Senate hearing already occurred and midterms as a "plausible flashpoint," but this scheduled event isn't decomposed into its own conditional probability of triggering a post-election reshuffle before Dec 31.

Both forecasters treat the unreleased Congressional civilian-casualty report as a minor "tail risk" bucketed with other scandals, but its release could be a discrete, high-impact event (hundreds of civilian casualties per The Intercept) that plausibly falls within the remaining 4-month window and deserves separate scenario weighting rather than folding into a generic "IG scrutiny" adjustment.

Both forecasts assert Polymarket "runs rich" on ouster contracts to justify shading below 19.5%, but this claim is unsupported by evidence in the brief — no historical calibration data on Polymarket political-departure market bias is cited, making this a somewhat ad hoc anchor adjustment.

The historical base rate (7-10%, "only Tom Price/HHS departed early" in Trump term 1) rests on an extremely thin single-data-point reference class; neither forecaster flags the wide uncertainty this implies, instead treating it as a tight, reliable floor.

Neither forecaster addresses the discrepancy between the Kalshi broader "any cabinet member leaves before Oct 2026" market at 38% (declining sharply) and the Hegseth-specific 11% proxy — if broader cabinet turmoil is elevated, this could suggest correlated risk (e.g., Iran-war fallout causing multiple departures) that isn't captured by looking at Hegseth-specific proxies alone.

Both converge tightly (14%/17%) near the midpoint of the base rate and Polymarket anchor, but neither seriously entertains a scenario where Trump's "treasonous" framing of friction reports and forceful public defense is itself a signal of instability (leaders who protest too vehemently sometimes precede sudden reversals), which could argue for a fatter right tail than either forecast implies.

6. Aggregator Opus 5

18% (63% confidence)

Yes: 18% No: 82%

The direct Polymarket contract on this exact question (19.5%, drifting down from a 31% peak) is the best anchor; Kalshi's 11% is a 'who leaves NEXT' contract, a strictly narrower event that mechanically understates Hegseth's standalone departure odds, so it should not pull the estimate down as much as both forecasters allowed. The base case remains No: Trump explicitly denied any Pentagon vacancy and praised Hegseth days after the Camp David clash, no successor has been floated formally, and Hegseth is executing normal high-profile duties. Against that, the red team is right that the window contains two discrete, dated catalysts the forecasters folded into generic 'scandal risk' — the unreleased congressional civilian-casualty report and a post-midterm (Nov 2026) reshuffle window — and that the 'Polymarket runs rich' adjustment and the one-data-point Trump-term-1 base rate are both thin justifications for shading well below the direct market. I therefore land essentially at the direct market anchor with only a modest downward shade for its declining trend and Trump's on-record backing, at ~17.5% Yes.

Pipeline Timing

Total pipeline time: 332.7s

Per-tool research timings shown in the Research section above.