Tools chosen: polymarket_direct kalshi_related polymarket_related claude_news gdelt_news wikipedia code_execution

Sub-questions (Fermi decomposition)

Planner reasoning

This is a Polymarket legal-outcome question hinging on whether a Utah state murder trial produces a homicide conviction (including a guilty plea with admission) by July 31, 2027. Key drivers are the case schedule (state trials of this magnitude often slip past 18 months), plea negotiations (a plea deal WITH admission resolves Yes, but a no-contest/Alford plea or dismissal resolves No), strength of evidence, and death-penalty dynamics that affect timeline and plea incentives. I will anchor on the Polymarket price, cross-check Kalshi, pull latest case news, and compute base rates for trial timing and conviction.

# Current state Tyler Robinson was bound over for trial on 2026-09-01 after Judge Tony Graf found probable cause on all seven counts (including aggravated murder), and Robinson entered a plea of not guilty at that hearing. No trial date has been set yet, and the death penalty remains authorized after the judge rejected a defense motion to strike the sole aggravating factor. The question resolves YES only if a criminal homicide conviction is entered by the Utah court by 2027-07-31. # Timeline of key events - 2025-09-10: Charlie Kirk assassinated at Utah Valley University; Robinson surrenders next day after family intervention (confirmed, Wikipedia). - 2025-09-16: Robinson charged with aggravated murder; prosecutors announce intent to seek death penalty (confirmed, Wikipedia). - 2026-07-08/09: Preliminary hearing begins; DNA evidence disputed by defense, confession evidence and surveillance footage shown (confirmed, GDELT/multiple outlets). - 2026-08-12/13: Defense moves to strike death-penalty aggravating factor, arguing bullet trajectory posed no risk to others besides Kirk (confirmed, ABC/PBS/Fox). - 2026-08-19: Prosecutors argue bullet engraving/targeting evidence shows political motive; push to send all charges to trial (confirmed, nypost/foxnews). - 2026-09-01: Judge Graf rules sufficient probable cause on all counts, binds case over for trial; rejects defense bid to strike aggravating factor (death penalty stays live); Robinson pleads not guilty. No trial date set (confirmed, KUER/Washington Times/NPR). - Ongoing (through 2026-02/09): Defense motion to disqualify entire Utah County Attorney's Office over conflict of interest denied (confirmed, CNN 2026-02-24). # Event Will Tyler Robinson be convicted of any criminal homicide offense in State of Utah v. Robinson by July 31, 2027? # Outcomes to forecast - Yes (convicted of homicide by deadline) - No (acquitted, case dismissed, charge dropped/reduced below homicide, mistrial with no retrial verdict, or no judgment by deadline) # Kalshi market anchor No direct Kalshi ticker found under this event ID; kalshi_related search for "Tyler Robinson"/"Robinson convicted" returned no matches. The only comparable cross-market data is **Polymarket at 41.5% YES** (down from ~46% 30 days ago, down 2pts in 7 days), trading in a 33–57% range over 77 days on $319K volume — this is the best available consensus anchor. # Sub-question answers 1. **Procedural posture / trial date** — Bound over for trial as of 2026-09-01; not guilty plea entered; no trial date set yet. Analysts expect trial in "late 2026 or more plausibly 2027" (factually.co, claude_news synthesis), meaning a July 2027 verdict is plausible but not guaranteed. 2. **Death penalty / plea negotiations** — Death penalty remains authorized; judge rejected defense motion to strike the aggravating factor (WashTimes, 2026-09-01). No plea deal reported; analysts say a plea would likely require taking death penalty off the table, which hasn't happened (Fox News). 3. **Evidence strength / defense strategy** — Prosecutors cite a confession note to roommate, family member reporting his confession, ballistics/bullet engraving evidence of political targeting, surveillance video of pre-attack movements, and digital records (NPR, NBC, nypost). Defense disputes DNA evidence and has focused on death-penalty eligibility (aggravating-factor motion) and a (denied) prosecutorial conflict-of-interest motion, not competency/insanity so far (multiple sources, Aug 2026). 4. **Base rate for verdict within ~22 months** — Code_execution model estimates ~73% chance judgment is rendered by deadline (capital cases add pretrial delay), with 90–95% conviction-given-judgment rate, yielding a central ~65% (range 53–79%) unconditional estimate. 5. **Delay risk** — Capital-case litigation (death-qualification, extensive discovery/expert litigation), media/venue disputes (livestream fights already ongoing), and possible future competency/venue motions are the main risks per claude_news synthesis; no competency evaluation reported yet. 6. **Cross-market pricing** — Only Polymarket data available (41.5%, declining trend); no distinct Kalshi price found for direct comparison. # Key facts (high-confidence, factual) 1. [KUER/NPR/WashTimes, 2026-09-01] Bound over for trial on all 7 counts; not guilty plea entered; death penalty remains live. 2. [CNN, 2026-02-24] Motion to disqualify prosecutor's office denied. 3. [Fox/ABC/PBS, Aug 2026] Defense motion to strike sole death-penalty aggravating factor rejected by judge. 4. [Wikipedia] Charged with aggravated murder 2025-09-16; case is capital-eligible from the outset. 5. [Polymarket] Current YES price 41.5%, down from 30-day high near 46%, range 33–57% over 77 days, $319K volume. # Cross-market signals - Kalshi related: No matching ticker found; only tangential "Kirk Cousins retirement" noise market surfaced. - Polymarket: 41.5% YES, downward-trending (-4.5% 30d), moderate liquidity ($319K). - Sportsbook implied: None available (not a sportsbook-relevant event). # Analyst opinions and speculation - claude_news synthesis: trial before July 2027 is plausible but "even a July 2027 timeline could be optimistic" given capital pretrial procedures; conviction before Dec 2026 (an earlier resolution date referenced) deemed "very unlikely." - Code_execution model: central 65% estimate for conviction by 2027-07-31, driven mainly by timing risk rather than doubt about guilt given strong evidence. # Directional lean per outcome - **Yes**: Strong evidence (confession, family testimony, ballistics, video) makes conviction highly likely once judgment is reached (~90–95%); case bound over, no dismissal signals. - **No**: Significant timing risk — no trial date set as of Sept 2026, death-penalty status prolongs pretrial process, possible future competency/venue motions, mistrial risk; Polymarket's declining price suggests market increasingly doubts a judgment lands before the July 2027 deadline. # Gaps / unknowns - No confirmed trial date exists; exact 2027 trial start remains unknown. - No Kalshi-specific price located distinct from Polymarket — cannot confirm cross-venue divergence. - Unclear whether any competency or change-of-venue motions will be filed going forward. # Calibration anchors - Polymarket YES price: 41.5% (primary available cross-market anchor, trending down). - Code_execution base-rate model: ~65% central estimate (53–79% range). - Precedent: High-profile capital murder cases with strong forensic/confession evidence typically convict when judgment is reached, but capital pretrial timelines frequently exceed 2 years from charging (e.g., many U.S. capital cases take 3+ years to trial).

1. Both forecasters land at ~45-47% YES, notably above the Polymarket anchor of 41.5% and well below the code_execution model's 65% central estimate — neither explains why they discount the base-rate model so heavily rather than splitting the difference or weighting it more, given the brief flags "timing risk" (not guilt risk) as the dominant driver and the model already incorporates capital-case delay. 2. Neither forecast grapples with the specific asymmetry in the brief: conviction-given-judgment is 90-95%, so the entire probability mass should hinge almost mechanically on P(judgment by 7/31/2027) — yet both settle on a YES probability (~45-47%) implying P(judgment)≈50%, without showing work reconciling this against the model's 73% judgment-rate estimate. 3. Both treat Polymarket's declining trend (46%→41.5%) as a meaningful signal of "deadline risk," but neither questions whether a $319K-volume, single-venue prediction market on a niche legal-timeline question is efficient or liquid enough to be trusted as ground truth versus noise. 4. Neither forecast explicitly addresses the plea-deal pathway in a probability-weighted way beyond a passing mention (Forecast 1 notes it, Forecast 2 ignores it entirely) — a plea to any homicide count would resolve YES and is a plausible alternative to a full capital trial, potentially shortening the timeline substantially and pushing probability upward. 5. Both forecasts converge suspiciously close together (45% vs 47%) despite citing different confidence levels (0.52 vs 0.62) and slightly different weightings — this convergence isn't justified by any explicit reconciliation of the wide range in the base-rate model (53-79%) or independent reasoning about why the low end of that range is more credible. 6. Neither forecast addresses the mistrial/retrial scenario explicitly listed under "No" outcomes, nor the possibility of a change-of-venue motion (flagged as an unknown risk) — both treat "timing" as the only real risk factor while underweighting these procedural tail risks that could also delay or complicate a verdict beyond mid-2027.

44% (57% confidence)

Yes: 44% No: 56%

The outcome hinges almost entirely on P(judgment by 2027-07-31), since conviction-given-verdict is ~90-95% with confession, family testimony, ballistics, and video evidence. The critical fact is that no trial date was set as of September 2026 in a death-penalty case — capital cases routinely take 3+ years from charging, and death-qualified jury selection, expert litigation, and potential venue/competency motions make an under-11-month path to verdict genuinely uncertain. The code_execution model's 73% judgment rate looks optimistic against this posture, while Polymarket's 41.5% (declining, moderate liquidity) is a reasonable if imperfect anchor; I weight the market more than the model given the concrete absence of a trial date. A plea deal (which would resolve YES) provides modest upside but requires the death penalty coming off the table, which hasn't happened, so I land near the two forecasts at 44% YES, slightly above the market for evidence strength and the plea pathway.

Total pipeline time: 146.5s