Which Supreme Court justices will resign during Trump's term?
I assess a below-even but material chance that Justice Alito will resign during Trump's 2025–2029 term; I put the independent probability at 45% based on his age, ongoing activity, and political timing incentives.
Analysis
**Stage 1 — Blind analysis (ignore current market prices):**
- Current facts: As of 2026-07-14, Justice Samuel Alito (age 76) has not announced a resignation and the Supreme Court and people close to him publicly debunked a June 30, 2026 NPR retirement report. He continues to author major opinions and is docketed for the October 2026 term. Historically, retirements cluster in summer months but are relatively rare on any given year; retirement decisions combine health, age, personal considerations, and political timing.
- *Arguments from fundamentals:* Age and longevity statistics give nontrivial baseline risk of retirement over a roughly 3.5-year window (mid-2026 to Jan 20, 2029). Many justices have retired in their late 70s and early 80s; Alito’s being the second-oldest increases the plausibility of retirement sometime during the term. Political calculus matters: a conservative justice who wants a reliably conservative successor would prefer to time retirement while a Republican President and cooperative Senate control exist. Conversely, if Senate control could flip in Nov 2026, that may either accelerate a retirement (to secure a conservative replacement before a flip) or delay it if the justice fears the replacement could be blocked — the direction depends on private preferences and risk tolerance.
- *Health and activity signals:* There is no public health crisis or incapacitation reported; Alito remains active and issuing opinions aligning with his usual role. The quick refutation of the NPR report by close associates and the Supreme Court strongly suggests no immediate plan to depart before October 2026. That reduces the short-term likelihood (next few months) but does not eliminate the multi-year chance.
- *Calendar and institutional patterns:* While summer/fall announcements are common, they are not mandatory; only a handful of retirements occur in any 35-year slice. The combination of Alito’s age, continued judicial workload, and no verified announcement leads me to treat a retirement during this full Trump term as plausible but not the baseline.
- *Independent probability synthesis:* Balancing age-driven baseline hazard (nontrivial), active recent engagement (counterweight), and political incentives (ambiguous depending on Senate dynamics), I place the independent probability that Alito resigns sometime between Jan 20, 2025 and Jan 20, 2029 at **45%**. This reflects a modestly elevated chance vs. a random four-year window because of age, but a discount because of clear public denials and observable continued engagement.
**Stage 2 — Market calibration (considering current market prices):**
- Existing market price: Yes = 68% (market implies 0.68 probability). That is substantially higher than my independent 45% estimate.
- Why the market might be pricing higher than my model: - *Insider chatter and rumor amplification.* The June 30 NPR false report and rapid debunking show there is active rumor flow around Alito — markets can amplify any hint of inside information even when not publicly confirmed. Large trading volume (~92.8k contracts) indicates heavy speculative interest and momentum trading. - *Recency and media salience bias.* Recent false reports make retirement feel more imminent to traders; prediction markets often overweight recent signals relative to their reliability. - *Event clustering and calendar bets.* Traders may be placing concentrated bets on the broadly plausible window (fall 2026–2027) rather than modeling health/activity signals carefully; this can push prices up quickly. - *Hedging/correlation trades.* Some professional traders or institutions might be hedging exposures (e.g., to other justice retirement markets) and driving up the price irrespective of new conclusive information about Alito.
- Why the market might be correct despite my lower independent probability: - *Private information possibility.* Some traders may have reliable private signals about Alito’s plans (e.g., conversations with clerks or acquaintances) that are not publicly confirmed. Markets sometimes incorporate such informal intelligence faster than public reporting. - *Risk premia/utility effects.* Market participants might be willing to pay a premium for asymmetric payout or for portfolio reasons, inflating the price relative to my probabilistic model.
- Calibration conclusion: The market appears to be priced aggressively toward a resignation (68%), likely driven by rumor/insider-signal expectations and recency bias. Absent clear new public corroboration, I view the market as likely overconfident relative to public fundamentals. That said, the market could be correctly reflecting nonpublic information; therefore, anyone trading against it should size positions with the possibility that the market contains real private signals.
Arguments
For
- Age-related baseline: at 76, the statistical chance of leaving the bench during a ~4-year window is meaningfully above that of younger justices.
- Political incentive: retiring while a conservative President is in office would maximize the chance of a like-minded successor if Senate control is favorable — this creates motivation to time a resignation during Trump's term.
- Active market signals and chatter (including the NPR false report) suggest there are conversational leaks and informal channels that increase the posterior probability of retirement for some traders.
- Historical pattern: some justices have retired in their late 70s/early 80s, so a retirement during this term is well within precedent.
Against
- Public denial and continued activity: the Court and close associates publicly debunked retirement reports and Alito continues to author major opinions, reducing short-term likelihood.
- Strategic timing uncertainty: if the Senate is at risk of flipping to Democrats after 2026, Alito may have an incentive to stay put rather than risk an uncertain confirmation process for a successor.
- No verified announcement or credible leak: absence of corroborated evidence of intent to resign weakens the market's rumor-driven signal.
- Retirement is uncommon relative to the number of justices and years: only a few retirements occur in any 35-year span, so the baseline for any specific justice is not overwhelmingly high.
Key drivers
- Alito's age and baseline retirement hazard (age 76 increases but doesn't mandate retirement)
- Alito's recent judicial activity and public denials of retirement plans
- Senate control (post-2026 midterm) and how that affects the desirability of retiring under a Trump presidency
- Private/rumored signals and media amplification (e.g., the June 30 NPR false report) which drive market expectations
Risk factors
- Private information leaks that markets may be pricing but are not publicly verified
- Sudden health changes or incapacitation that would rapidly increase retirement probability
- Major political shifts (Senate flips) changing the strategic calculus for timing of resignation
- False-positives from rumor-driven markets creating momentum that obscures fundamentals
Scenarios
Best case
Alito announces his retirement in late 2026 (before any potential Senate flip), allowing a Trump nominee to be confirmed and preserving a conservative majority; markets and political actors quickly adapt and the 'Yes' market resolves true.
Most likely
Alito serves through the October 2026 term and then assesses political and personal factors; a retirement announcement in 2027 is plausible but not certain. The decision will hinge on health considerations, private conversations, and the post-2026 Senate landscape — leading to a roughly even-to-slightly-under-50% chance over the full term (my central estimate: 45%).
Worst case
Alito remains on the bench through the end of Trump's term (and possibly beyond), no retirement announcement is made, markets that priced in retirement suffer losses and show that rumor-driven pricing was mistaken.
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