Tools chosen: polymarket_direct polymarket_related kalshi_related claude_news gdelt_news wikipedia code_execution

Sub-questions (Fermi decomposition)

Planner reasoning

This is a legal-outcome question hinging on whether Tyler Robinson is convicted of a criminal homicide offense in Utah state court by July 31, 2027, with plea deals lacking an admission of guilt resolving No. Key research needs: current market price anchor, trial schedule/timeline, plea negotiation and death-penalty status, competency/insanity issues, and base rates for aggravated murder convictions/pleas. Cross-venue and news research will fill in case-status specifics.

# Current state Robinson remains pretrial: a five-day preliminary hearing concluded in July 2026, with a bind-over ruling (whether the case proceeds to trial) expected after closing arguments on 2026-09-01. No plea has been entered; no trial date has been set. Prosecutors are seeking the death penalty, and defense is actively contesting death-penalty eligibility, which affects timeline but not the "Yes"/"No" homicide-conviction question directly. # Timeline of key events - 2025-09-10: Charlie Kirk assassinated at Utah Valley University (confirmed, Wikipedia). - 2025-09-16: Robinson charged with aggravated murder; DA announces death penalty will be sought (confirmed). - 2026-06-23: Judge denies Robinson's request to subpoena roommate/partner (confirmed, OANN). - 2026-06-26: Judge holds prosecutor in civil contempt (gag order violation) but keeps death penalty on table (confirmed, multiple outlets). - 2026-07-09 to ~07-11: Multi-day preliminary hearing held; prosecutors argue evidence "overwhelming," cite alleged written confessions (11+ times), DNA, video, witnesses (confirmed, CNN/KUTV). - 2026-07-26: No guilty plea entered as of this date (confirmed, thelawlion.com). - 2026-07-28 to 08-18: Briefing schedule set (state brief 7/28, defense reply 8/11, state rebuttal 8/18) ahead of bind-over closing arguments (confirmed, KSL/KSLNewsRadio). - 2026-08-03: Reports detail alleged written confessions (reported, HotAir). - 2026-08-12/13: Defense formally moves to strike the sole death-penalty aggravating factor, arguing "single-shot"/no danger-to-others theory precludes capital eligibility (confirmed filing; reported widely — Newsweek, ABC4/KUTV, The Hill). - 2026-09-01 (scheduled): Bind-over closing arguments before Judge Graf; ruling expected to follow — if bound over, arraignment and plea entry follow, then a 60-day statutory window for death-penalty notice, then trial-date setting (reported/scheduled, not yet occurred). - Trial timing: Multiple legal observers (HotAir, factually.co) expect trial "sometime in 2027," with no confirmed date yet (speculative/reported). # Event Will Tyler Robinson be convicted of any criminal homicide offense in State of Utah v. Tyler James Robinson by July 31, 2027 (initial judgment only, no appeals)? # Outcomes to forecast Yes / No # Kalshi market anchor No Kalshi-direct price was returned for this specific ticker in the raw research (kalshi_direct data absent from tool output; only an unrelated Kirk Cousins retirement market surfaced under "Charlie Kirk" keyword search). Polymarket is the only cross-market pricing available: **45.5% YES**, up +5% over 7 days, flat over 30 days, range 33–54% over 62 days, $284K volume — suggesting genuine uncertainty with a slight recent uptick. # Sub-question answers 1. **Polymarket price/history** — Current 45.5% YES; 7d +5%, 30d flat; range 33–54% across 62 days; $284K total volume (Polymarket direct). 2. **Procedural status** — Preliminary hearing concluded; bind-over ruling expected 2026-09-01; no trial date set yet; arraignment/plea entry would follow bind-over (claude_news, KSL, CNN). 3. **Death penalty/plea** — State is seeking death penalty; no plea deal or negotiations publicly reported; defense is fighting to strike the death-eligibility aggravating factor, not negotiating a plea (claude_news, Newsweek, The Hill). 4. **Competency/insanity/suppression issues** — No competency or insanity defense reported; defense strategy centers on evidentiary/procedural challenges (DNA reliability, death-eligibility "single-shot" argument), which could delay but not obviously derail homicide charges (claude_news). 5. **Evidence strength** — Prosecutors describe evidence as "overwhelming": alleged 11+ written confessions, DNA, video, witness testimony (KUTV, HotAir). Defense has challenged death-penalty eligibility, not guilt itself. 6. **Base rate for capital cases within ~22 months** — No direct base-rate data found; code_execution model estimates 40–60% chance of disposition within window based on typical capital-case delays (discovery volume, contested motions). 7. **Cross-market pricing differences** — No Kalshi or Polymarket markets found on trial timing, death penalty outcome, or plea deals specifically; only Polymarket's own conviction market exists (polymarket_related, kalshi_related both largely empty). # Key facts (high-confidence, factual) 1. [Wikipedia] Kirk assassinated 2025-09-10; Robinson charged with aggravated murder 2025-09-16, death penalty sought. 2. [KUTV/CNN] Preliminary hearing concluded; prosecutors call evidence overwhelming, allege confession, DNA, video, witnesses. 3. [KSLNewsRadio] Bind-over closing arguments scheduled 2026-09-01; briefing due through 08-18. 4. [thelawlion.com] No guilty plea entered as of 2026-07-26. 5. [Newsweek/The Hill] Defense actively contesting death-penalty eligibility (not guilt), citing "single-shot" argument. 6. [Utah law, per claude_news] Post-arraignment, prosecutors get 60 days to file death-penalty notice, adding pretrial delay. # Cross-market signals - Kalshi related: No matching market found besides irrelevant Kirk Cousins retirement market. - Polymarket: 45.5% YES, modest uptrend (+5% 7d), volume moderate ($284K), suggests market sees outcome close to coin-flip, tilted slightly toward conviction happening in time. - Sportsbook implied: None available. # Analyst opinions and speculation - HotAir/factually.co: trial expected "sometime in 2027," not 2026, given case complexity and capital posture (reported/speculative). - code_execution Monte Carlo model: central estimate ~45% YES (range 34–57%), driven mainly by timing risk rather than conviction-probability-if-tried (which it pegs at 85–95%). # Directional lean per outcome - **Yes**: Strong evidence (alleged confessions, DNA, video) makes conviction highly likely IF case reaches judgment; no plea/insanity complications reported. - **No**: Binding constraint is timing — capital case procedural complexity (bind-over not yet ruled, arraignment/plea pending, 60-day death-notice window, contested capital-eligibility motions) creates meaningful risk trial doesn't conclude with judgment by July 31, 2027; no trial date set as of latest research (Aug 2026). # Gaps / unknowns - No Kalshi-direct YES price was retrieved despite ticker being specified — must be treated as missing, not zero. - No confirmed trial date exists yet; entire "Yes" probability hinges on unconfirmed 2027 timeline expectations. - No historical base-rate dataset for comparable capital-case timelines was found. # Calibration anchors - Polymarket YES price: 45.5% (only direct cross-market anchor available; Kalshi-direct price missing from research). - Model-based estimate (code_execution): ~45% central, 34–57% range, driven by timing risk not conviction certainty.

1. **Critical unresolved discrepancy on resolution date**: The brief explicitly notes CLOSE TIME is 2026-12-31, but the event question asks about conviction "by July 31, 2027." Forecast 1 flags this and shades down slightly (0.35 vs. 0.45 anchor), but Forecast 2 ignores it entirely and treats the Polymarket 45.5% (which likely tracks the July 2027 deadline) as a clean anchor — if the market actually resolves at year-end 2026, given "no trial date set" and trial expected "sometime in 2027," YES should be far lower than either forecast states. 2. **Anchoring stretched thin**: Both forecasts lean heavily on Polymarket's 45.5% and the code_execution model's ~45% as if they were independently corroborating, but the brief admits the model estimate has "no direct base-rate data" and is a rough guess — treating two correlated, non-empirical estimates as convergent evidence risks false precision. 3. **Plea-deal scenario omitted**: Neither forecast considers that capital defendants sometimes plead guilty to avoid execution exposure, which could produce a homicide conviction well before a full trial concludes — this could meaningfully raise and accelerate P(Yes) but is unaddressed despite the brief noting "no plea deal... publicly reported" (leaving the door open). 4. **Asymmetric effect of death-eligibility ruling ignored**: If the defense's motion to strike the death-penalty aggravating factor succeeds (per 2026-08-12/13 filing), the case could shift to a non-capital track, which typically moves faster to trial — neither forecaster models this as a pathway that could increase, not just delay, P(Yes) within the window. 5. **Conditional decomposition not shown**: Forecast 2 states directional factors but never explicitly multiplies P(bound over) × P(trial reached by deadline) × P(convicted if tried) as Forecast 1 implicitly does; this makes it harder to see whether the 0.46 is justified versus simply anchored to Polymarket with rationalization layered on. 6. **Both overlook the confession/evidence detail could shorten timeline**: The "11+ written confessions" evidence is unusually strong and public, which historically correlates with higher likelihood of early guilty pleas in high-profile capital cases (reduces trial-timing risk) — this is evidence-strength information relevant to timeline, not just to conviction-if-tried, but both forecasts confine it to the latter.

42% (47% confidence)

Yes: 42% No: 58%

Conviction conditional on reaching judgment is very high (~90%) given alleged 11+ written confessions, DNA, video and witnesses, with the defense contesting death-penalty eligibility rather than factual guilt — so the binding constraint is purely timing. As of Aug/Sep 2026 the case had not even been bound over, with arraignment, a 60-day capital-notice window, capital-eligibility litigation, and voluminous discovery still ahead; capital trials of this profile routinely slip well past 22 months from charging, and no trial date exists. I anchor on Polymarket's 45.5% (the only direct market signal) but shade modestly down because trial-timing expectations in capital cases are systematically optimistic; I do not shade as far as Forecast 1 because the resolution criterion is explicitly July 31, 2027 (the 2026-12-31 close time appears to be an administrative placeholder), and because the critique's plea-deal and non-capital-track pathways provide real upside to an early homicide conviction. Net: ~0.42 Yes.

Total pipeline time: 253.3s