The Forecast Ledger
Every market we covered that has since closed, with the probability we published, and — once the venue has settled it — what actually happened. When we said 80%, how often was the money right?
0.165 lower is better · a coin flip scores 0.250
29
+34% Brier improvement over always guessing the 52% base rate
| When we said | n | we meant | it happened | |
|---|---|---|---|---|
| Very likely (90–97%) | 6 | 95.1% | 100.0% | |
| Likely (75–89%) | 8 | 83.1% | 75.0% | |
| Leaning yes (55–74%) | 3 | 62.4% | 0.0% | |
| A coin flip (45–54%) | 1 | 45.5% | 0.0% | |
| Probably not (26–44%) | 5 | 35.0% | 60.0% | |
| Unlikely (11–25%) | 3 | 15.6% | 0.0% | |
| Very unlikely (3–10%) | 3 | 4.2% | 0.0% |
Excluded from the headline score (44 settled markets): 28 tracked less than 24h · 15 published outside 2–98% · 1 below the coverage bar (micro-duration / price bucket / metronome). Scored naively over every settled market the Brier would read 0.097 on n=73 — the headline number above is the honest one.
Green bar: how often the outcome we published actually happened; black tick: the probability we published. A well-calibrated paper's bar ends at its tick. Only forecasts count: markets the venue has settled, tracked at least a day, published inside 2–98%, and above the coverage bar; 60 markets that left our coverage while still open are excluded.
72 resolved markets in Curiosities · average publication probability 74.9% · avg. 3 days tracked
By conviction — Virtually certain: 29 · Very likely: 11 · Likely: 10 · Leaning yes: 4 · A coin flip: 2 · Probably not: 7 · Unlikely: 3 · Very unlikely: 4 · Virtually impossible: 2
By quality — A: 4 · B: 6 · C: 31 · D: 19
Trump's Montana Rally Will Almost Certainly Hit Energy, Biden, and Courts
The near-certainty on oil, gas, and coal alongside "Sleepy Joe" and the Supreme Court reads as a well-worn script — what's telling is that "Fraud" dropped sharply, suggesting bettors believe this rally will be forward-looking campaign fuel rather than a backward glance at election grievances.
Market closed · Kalshi · tracked 2 days
Trump Will Almost Certainly Name Zohran Mamdani This Week
What was an unlikely outcome just yesterday is now virtually certain — the explosive 84-point move signals Trump has already engaged with Mamdani publicly, and the real cultural curiosity here is that people stake real money tracking a president's vocabulary like a real-time ticker.
Market closed · Kalshi · tracked 7 days
Trump Said "Alabama," Korea, Rare Earth Minerals, and More at His Tennessee Rally
The fact that people staked real money predicting a sitting president's word choices — and resolved every single bet correctly — reveals something genuine: Trump's rhetorical repertoire is now so legible that his rallies function as predictable performance, not spontaneous politics.
Market closed · Polymarket · tracked 2 days
Khamenei Will Post 9 or Fewer Times This Week
The fact that people stake real money tracking an ayatollah's social media cadence reflects how closely observers read any signal from Tehran for signs of crisis, calculation, or silence — and this week, the money says he goes quiet, posting under ten times through October 9.
Market closed · Polymarket · tracked 1 day
Guilfoyle Probably Stays as Ambassador Through Year-End
What had been an unlikely scenario is now merely probable-not — the sharp 20-point jump signals new information has entered the market, and her tenure is no longer as secure as it appeared, even if departure this year remains the minority view.
Market closed · Polymarket · tracked 9 days · range 97%–26% · ↑ Rising at close
Trump's Anduril Remarks Are Very Likely to Focus on Submarines and Naval Defense
The notable signal is what collapsed: Elon Musk's name fell 45 points, erased as a predicted topic while submarines, shipbuilding, Iran, and tariffs surged — the money reads this as a focused defense-industrial speech, not a freewheeling political rally.
Market closed · Kalshi · tracked 1 day · venues disagreed 23.5pp
Taylor Swift's 'Patient Zero' Is Likely to Hit Billboard Hot 100 Number One
What was a long shot yesterday is now the strong favorite — a conviction-tier jump that reflects a clear first-week streaming and sales surge. Swift displacing Ella Langley's 'Choosin' Texas' would extend her dominance of the chart into yet another release cycle.
Market closed · Polymarket · tracked 2 days
Bernie Sanders Will Say 'Billionaire' — Repeatedly
The fact that people are staking real money on which words a 84-year-old democratic socialist will repeat at his own rally reveals less about Sanders than about us — his rhetoric has become so predictable it is now a liquid betting market, AI references aside.
Market closed · Kalshi · tracked 1 day
SpaceXAI Will Probably Not Rename Itself to SpaceXSI by October 31
A rebranding by month's end is more likely off the table than on, but at 34% the window isn't closed — if internal signals were pointing to a confirmed switch, the money would have moved harder by now.
Market closed · Polymarket · tracked 2 days · range 92%–26% · ↑ Rising at close
Bernie Sanders Will Say 'Billionaire' at Least Three Times at His Rally
What had been unlikely is now virtually certain across nearly every term on the board — the real curiosity is that real money is staking on the precise vocabulary of a politician whose script is among the most predictable in American public life, which says more about our appetite to quantify the familiar than about any genuine uncertainty.
Market closed · Kalshi · tracked 2 days
Sanders Will Almost Certainly Say
The rally is shaping up as a greatest-hits performance of Sanders's rhetorical brand — the near-certainty on every signature phrase tells you less about what he'll say than about how legible and predictable American populist politics has become.
Market closed · Kalshi · tracked 1 day
Google's Search Market Share Stays Well Above 20% This Week
The fact that real money is staking near-certainty on Google holding above 20% share — in a week of antitrust scrutiny and rival AI launches — reveals that the market sees the competitive threat as a long-run story, not an imminent shift in consumer behavior.
Market closed · Kalshi · tracked 5 days · range 99%–93% · ↑ Rising at close
The Next Muse Model Family Name Is Wide Open
Money that had clustered around Muse Flame is scattering — its sharp drop is the story, leaving six names bunched between 8% and 15% with no clear winner, a signal that insiders either don't know or aren't telling.
Market closed · Polymarket · tracked 2 days · range 20%–2% · 3 tier changes · ↓ Falling at close
Trump's Oklahoma Rally Script Is Virtually Certain — The Topics Are Already Known
That people stake real money on predicting a politician's exact words — and win reliably — says more about rhetorical predictability than any speech could: what had been considered uncertain is now virtually certain, reducing a political rally to a resolved equation.
Market closed · Kalshi · tracked 2 days · venues disagreed 8.0pp
Micron Will Almost Certainly Name Nvidia and Tout HBM4E on Its Next Earnings Call
The fact that people are staking money on a company's word choices tells you something: Micron's AI memory narrative has become so central to its investment case that the script is now nearly predictable — Nvidia, HBM4E, agentic, and China were all virtually certain mentions even before today's sharp repricing confirmed it.
Market closed · Kalshi · tracked 1 day
H200 GPU Rental Prices Are Very Likely to Land Between $5.50 and $6.00 in September
That people are staking real money on the per-hour price of renting a single GPU model reveals how industrialized AI compute has become — a commodity with its own futures market, watched as closely as oil barrels. What was very unlikely yesterday is now very likely, suggesting a sudden convergence of information about where spot prices actually sit.
Market closed · Polymarket · tracked 1 day
Switzerland's Neutrality Initiative Is All But Certain to Fail
Swiss voters look set to reject the neutrality initiative decisively, a signal that even in a historically neutral country, the appetite to constitutionally constrain foreign-policy flexibility has collapsed — while the initiative trends in headlines, the money has never taken it seriously.
Market closed · Polymarket · tracked 1 day · 2 tier changes
Nobody in Trump's Circle Is Expected to Promote $LAPTOP
What's revealing isn't the outcome — it's that people are staking real money on whether a presidential family member will shill a memecoin by September, a question that exists only because the boundary between the White House and crypto promotion has become genuinely unclear. The odds say it almost certainly won't happen; the market's existence says the question no longer feels absurd.
Market closed · Polymarket · tracked 17 days · range 76%–9% · 3 tier changes · ↓ Falling at close
The World Is Betting on How Long Trump and Xi Will Shake Hands
A summit between the two most powerful leaders on earth is so freighted with signal that people are staking real money on the duration of a greeting — because in diplomacy, a handshake isn't a pleasantry, it's a data point, and everyone knows it.
Market closed · Polymarket · tracked 1 day · range 99%–32% · 2 tier changes · ↑ Rising at close
America's Tech Elite Will Attend the White House Dinner for Xi Jinping
What began as an open question is now virtually certain across the board — Elon Musk, Jensen Huang, Tim Cook, and Sundar Pichai are all priced above 94%, with Mark Zuckerberg surging to 93% in the last 24 hours, painting a picture of a Silicon Valley–Washington–Beijing convergence with essentially no absentees expected.
Market closed · Polymarket · tracked 2 days
Trump's North Carolina Remarks Are a Predictable Script — and That Is the Story
The fact that real money is staked on which words a sitting president will utter — Biden, Fake News, Communist, Deport — reflects how thoroughly his rhetorical repertoire has become a forecastable commodity, as routine as a weather pattern. Deportation language surged to certainty overnight, confirming immigration as the session's sharpest edge.
Market closed · Kalshi · tracked 5 days · venues agreed · ↑ Rising at close
Kash Patel Will Invoke Trump, Epstein, Iran, and Elections at the FBI Hearing
The breadth of near-certain topics — from Epstein to artificial intelligence to taxpayers — tells you this is expected to be a wide-ranging political performance, not a narrow oversight session; the only real question the market already answered is what won't come up.
Market closed · Kalshi · tracked 1 day
Nashville's Airport Probably Keeps Its Name Through October
That people are staking real money on whether a board will rename an airport after a beloved cultural icon says more about the hunger for civic gestures of affection than about the plausibility of the outcome — which the money currently finds unlikely.
Market closed · Kalshi · tracked 2 days · range 68%–24% · 2 tier changes · ↓ Falling at close
Trump Will Mention Hormuz in His Remarks to Embassy Staff and Business Leaders
What had been very unlikely is now virtually certain — the fact that real money rushed to price Hormuz as a near-lock topic reveals that the Iran deal has so thoroughly colonized the diplomatic conversation that even a routine embassy address cannot escape it.
Market closed · Kalshi · tracked 1 day
Trump Will Discuss Tariffs, Iran, Israel, and Immigration With Ireland's Taoiseach
Every major geopolitical flashpoint — tariffs, Iran, Israel, immigration — is virtually certain to surface in the bilateral, crowding out any narrowly bilateral Irish agenda; the meeting looks less like diplomacy and more like a tour of Trump's global preoccupations.
Market closed · Kalshi · tracked 2 days · venues disagreed 96.1pp
Trump Virtually Certain to Say "Beautiful" at Least Four Times at the Pentagon
The fact that people staked real money on the precise frequency of a president's verbal tics — and that the market resolved to certainty — says something unspoken about how thoroughly Trumpian idiom has become its own predictable data stream.
Market closed · Polymarket · tracked 1 day
Kroger's Next Earnings Call Will Cover Tariffs, SNAP, Produce, and Deflation
The fact that people stake real money on a grocer's script reveals something true: Kroger's earnings calls have become a proxy for the state of the American consumer, and the certainty that tariffs, food stamps, and deflation all get named in the same breath maps exactly the economic pressures bearing down on lower-income households right now.
Market closed · Kalshi · tracked 1 day
Vance's RNC Speech Is Anyone's Guess — Except It Won't Be About Socialism
The collapse of the "Socialism" contract — down nearly 90 points — tells you something about what a midterm convention speech is expected to sound like in 2026; the money is betting on identity and immigration language over old Cold War frames, and no single theme has yet locked in.
Market closed · Kalshi · tracked 1 day
Trump Is Likely to Issue a Public Apology Before October
That people are staking real money on whether a famously unapologetic president will say sorry — and that this market just surged from unlikely to likely overnight — tells you something has changed: either a specific incident is forcing the question, or the bet itself is a cultural referendum on whether this presidency has any of the old norms left.
Market closed · Kalshi · tracked 1 day
Whether Trump Will Apologize This Year Is a Coin Flip
That real money is nearly evenly split on this tells you more than the odds do: the fact that a Trump apology is being treated as a live, tradeable proposition — not a joke contract — reveals how much the political atmosphere has shifted around expectations of presidential accountability.
Market closed · Kalshi · tracked 1 day
Trump's UFO Declassification Is Likely Coming Before End of September
The collapse of the September 15 contract tells the real story: traders no longer believe an early release is imminent, but the end-of-month window remains the live expectation — meaning the files are likely coming, just on a slower political clock than recently assumed.
Market closed · Polymarket · tracked 2 days · range 93%–78% · ↑ Rising at close
The Anaheim Angels Naming Bill Is Likely Dead
A 75-point collapse in a single day is a verdict, not a drift — whatever legislative momentum existed has evaporated, and the Angels look set to keep navigating their naming situation without statutory help.
Market closed · Kalshi · tracked 2 days
Trump Will Call Democrats and Fake News Out at the RNC Midterm Convention
The near-certainty of these rhetorical staples reveals more about the ritual than the man — bettors aren't predicting a speech, they're pricing in a formula so reliable it's become a contractual certainty, while "China" is the one keyword slipping from the script.
Market closed · Kalshi · tracked 1 day · range 97%–74% · 3 tier changes
Apple Maps Has Renamed Lake Ontario to Lake America
Market closed · Polymarket · tracked 2 days
Michael Jackson Is Likely to Break 22 Million Daily Views in August
Market closed · Kalshi · tracked 2 days · range 99%–22% · 2 tier changes · ↑ Rising at close
A100 GPU Rental Rates Are Likely Stuck Near $1 Through August
Market closed · Polymarket · tracked 1 day
Indiana's Lions Remain at Large
Market closed · Polymarket · tracked 2 days · range 8%–1% · ↓ Falling at close
Milo Yiannopoulos Will Be Deported This Year
Market closed · Polymarket · tracked 1 day
Trump Said Exactly What You'd Expect at NASA
Market closed · Polymarket · tracked 5 days · range 93%–88%
Iran's Currency Hovers Near a Fragile Floor as Rial Uncertainty Spikes
Market closed · Polymarket · tracked 6 days · range 98%–38% · 5 tier changes · ↑ Rising at close
Rockstar's GTA VI Extended Look Will Run At Least 20 Minutes
Market closed · Kalshi · tracked 1 day
Z.ai Is Likely Behind the Ox Alpha Stealth AI Model
Market closed · Kalshi · tracked 6 days · venues disagreed 11.8pp
Vance Will Attack Democrats and Invoke Biden in Maine Remarks
Market closed · Kalshi · tracked 1 day
Trump Will Talk Energy at the Graham Rally — Biden and Communism Too
Market closed · Kalshi · tracked 4 days · ↑ Rising at close
Vance Will Lead With Steel in His Ohio Remarks
Market closed · Kalshi · tracked 1 day
Trump Likely Names a New Press Secretary Before September's End
Market closed · Polymarket · tracked 3 days · range 100%–32% · 6 tier changes · venues disagreed 26.0pp · ↑ Rising at close
Micron's CEO Is Likely to Dodge Buzzwords on Mad Money Tonight
Market closed · Kalshi · tracked 1 day
Ciro Nogueira Edges Ahead in a Knife-Edge Piauí Senate Race
Market closed · Polymarket · tracked 1 day
Warsh Will Talk Productivity, Regime Change, and Challenge at Jackson Hole
Market closed · Polymarket · tracked 1 day
Dan Bilzerian Will Likely Clear the 2.5% Threshold in Florida's Republican Primary
Market closed · Kalshi · tracked 1 day · range 99%–82% · 2 tier changes · ↑ Rising at close
Tom Homan Will Likely Talk Deportation on Fox — and Increasingly National Security Too
Market closed · Kalshi · tracked 2 days
Todd Blanche Will Say 'Trump' at Least Three Times on Fox News Sunday
Market closed · Kalshi · tracked 1 day
The 1996 McLaren F1 GTR Will Likely Fall Well Short of Its Hoped-For Price
Market closed · Polymarket · tracked 1 day
Ronaldo's Wedding Guest List Is Anyone's Guess
Market closed · Polymarket · tracked 12 days · range 74%–0% · 6 tier changes · ↓ Falling at close
KAROL G's New Album Is Headed for a Massive Debut Week
Market closed · Kalshi · tracked 2 days
Mamdani Will Talk About Affordability — and Increasingly About Taxes
Market closed · Kalshi · tracked 2 days
Air Canada's Next Earnings Call Will Be Dominated by Middle East Turbulence
Market closed · Kalshi · tracked 1 day · venues disagreed 3.0pp
Cava Will Talk Salmon — and Increasingly, AI Too
Market closed · Kalshi · tracked 4 days · range 99%–87% · 2 tier changes · ↑ Rising at close
Alfred Cannan Leads a Wide-Open Isle of Man Leadership Race
Market closed · Polymarket · tracked 1 day
El-Sayed Will Talk Healthcare on Meet the Press — and Likely Gaza Too
Market closed · Kalshi · tracked 1 day
Celsius Will Name PepsiCo on Its Next Earnings Call
Market closed · Kalshi · tracked 1 day
Mike Lindell Is Poised to Win Minnesota's Republican Gubernatorial Nomination
Market closed · Kalshi · tracked 6 days · range 85%–54% · 3 tier changes · ↑ Rising at close
A Valve or Plumbing Failure Destroyed the Blue Origin New Glenn
Market closed · Polymarket · tracked 1 day
Market closed · Kalshi · tracked 2 days
Trump and Musk Are Likely Not Meeting in August
Market closed · Polymarket · tracked 5 days · range 44%–1% · 5 tier changes · ↓ Falling at close
California Is Almost Certain to Carve Out a Goat-Herder Wage Exception
Market closed · Kalshi · tracked 1 day
Count Binface Is Poised to Finish Second in the Clacton By-Election
Market closed · Polymarket · tracked 5 days · range 99%–78% · 5 tier changes
Senate AI Hearing Will Center on Cost and Privacy, Not National Security
Market closed · Kalshi · tracked 1 day
"DTF St. Louis" Is All but Certain to Win Nothing at the Emmys
Market closed · Polymarket · tracked 4 days · range 99%–64% · 6 tier changes
Spotify's Earnings Call Will Be Dominated by Headwinds and Retention
Market closed · Kalshi · tracked 1 day
The 2026 WSOP Main Event Title Almost Certainly Stays in North America
Market closed · Polymarket · tracked 1 day
Count Binface Is Set for a Historically Strong Second-Place Finish in Clacton
Market closed · Polymarket · tracked 4 days · range 52%–37% · 5 tier changes