Which Supreme Court justices will resign during Trump's term?

**Stage 1 — Blind analysis (ignore market prices):**

Samuel Alito will be 74 in mid-2026 and will be 78 by the end of a full Trump term in January 2029. Historically, Supreme Court retirement timing is influenced by a mixture of personal health, institutional appetite for longevity, and political calculus (many justices prefer to time retirements for a favorable president). Against that backdrop, two countervailing forces matter most for Alito specifically: (1) the political incentive to retire under a Republican president so a conservative successor can be appointed, and (2) Alito's own recent, explicit public statements denying any plan to step down together with the lack of credible reporting of health or incapacity.

Arguments that push probability upward include age, the clear partisan benefit of retiring during a Republican presidency, and the fact that sudden health issues or other unpredictable developments (e.g., major surgery, incapacitation) could force an early departure. On the other hand, Alito has a history of demonstrating professional zeal and has resisted retirement rumors; the Supreme Court's official denials carry informational weight. Empirically, retirements of sitting justices in any given 4–5 year presidential term are uncommon for a given individual—more commonly a subset of justices change over an extended period rather than many resigning in one term.

Balancing these factors, a mid-range probability is appropriate: the political case for retirement under a friendly president is real but not decisive absent evidence of health concerns or a stated intent to leave. Therefore my independent (blind) probability is 30% that Alito will resign during Trump's term.

**Stage 2 — Market calibration (inspect current prices):**

Current market price: Yes 70% / No 30% (heavy tilt toward resignation). That is substantially higher than my independent 30% assessment. There are a few reasons markets might be pricing resignation so aggressively:

- Traders may be generalizing from churn among other conservative justices (expecting multiple conservative retirements during a second Trump term) and applying that pattern to Alito without justice-specific evidence. - High retail/social-media activity can push prices away from fundamentals; a wave of headlines, rumors, or viral posts about Alito's reported relocation for safety could have been interpreted as a precursor to resignation by momentum traders. - Some market participants may be using a “first-order” political heuristic: if a conservative ally is president, conservative justices will opportunistically retire — that simplifies to a high probability for all older conservative justices.

Why the market might still be right despite my lower estimate:

- Markets price tail risks and rare but impactful events; an unexpected health crisis or a private decision by Alito could materialize and produce a resignation, and the market is possibly reflecting that asymmetric risk. - If there are informed bettors with nonpublic signals (e.g., private counsel communications), they could legitimately be moving the price.

Overall calibration: given the lack of credible evidence Alito intends to resign, and the historical rarity for any specific justice to resign within a particular 4-year window, the market appears likely to be overpricing the probability. The price may reflect rumor-driven momentum or a generalized expectation for conservative turnover rather than Alito-specific fundamentals. I therefore place my independent probability at 30% and view the current market (70%) as likely overstating the true chance, though not impossibly wrong if an unforeseen shock occurs.