This week: Kalshi is valued at $22 billion and heading to the Supreme Court. Polymarket is raising $400M with the NYSE's parent company backing it. Meanwhile, IRGC gunboats are seizing ships in the Strait of Hormuz and our fictional portfolio is up 33.6% in two days. The money is flooding in and the stakes keep rising.
Three developments this week prove prediction markets have crossed from crypto curiosity to financial infrastructure:
Coatue Management led the round. Kalshi controls 89% of the regulated U.S. market (Bank of America, April 9). At $22B, Kalshi is now valued higher than the Chicago Board Options Exchange was at its 2005 IPO. This isn't a bet on prediction markets. It's a bet that event contracts become a permanent asset class.
Intercontinental Exchange (ICE), the parent company of the New York Stock Exchange, has committed up to $2 billion. When the NYSE's parent company writes a $2B check into prediction markets, the institutional legitimacy question is settled. The remaining question is who wins: regulated (Kalshi, $22B) or crypto-native (Polymarket, $15B)?
Kalshi's fight with states over whether prediction markets are derivatives or gambling is heading toward the Supreme Court. The outcome determines whether the industry operates under one federal framework (CFTC) or 50 state gaming commissions. Sports betting is currently 85% of volume for both major platforms. If the Court rules prediction markets are gambling, those contracts vanish overnight. If it rules they're derivatives, the CFTC becomes the sole regulator and institutional capital pours in.
What this means: The prediction market industry is expected to hit $200B in volume this year. Bernstein projects $1 trillion by 2030. The infrastructure war between Kalshi and Polymarket will define market structure for the next decade. For traders: enjoy the promotional pricing and tight spreads. This is two platforms spending billions to buy your order flow.
Our call from Issue #1: April normalization at 38% was overpriced (fair value 5-10%), May at 69% was overpriced (fair value 40-50%).
Current prices: April 9% YES, May 59% YES. Both moved sharply in our direction.
The week's timeline:
Updated call: April is effectively resolved as NO. May at 59% is still overpriced. My revised estimate: 30-40%. The blockade is becoming structural, not tactical. Iran is institutionalizing it with transit fees. The negotiating gap is massive (US wants 20-year enrichment pause, Iran offered 5 years). 3-8 ships/day are transiting vs. 60 needed. This doesn't unwind in 5 weeks.
"Will the Iranian regime fall by April 30?" has $32M in volume despite trading at just 2% YES. Why does a 2% market have $32M?
Traders are using it as a cheap hedge. At 2 cents per share, a YES position is a lottery ticket. If Mojtaba Khamenei (installed as Supreme Leader on March 8 after his father's assassination) faces a coup, that 2-cent share becomes worth $1.
The longer-dated markets are more interesting:
The market says there's a 1-in-5 chance of regime change within 9 months.
$548M in volume. Current top candidates:
Democrats remain elevated, driven by backlash to Iran. Historical base rates for incumbent parties suggest regression toward 50/50 this far from an election. I wouldn't trade this either direction until the Hormuz situation resolves.
Finland leads the overall winner market at 36%. The divergence I flagged in Issue #1: Finland is the consensus pick but isn't dominant in either the jury (13%) or televote (17%) sub-markets. Israel leads the televote at 38%.
At 36%, Finland is probably fairly priced. The value, if any, is in Israel for the televote.
The most underrated story in prediction markets right now.
ForecastEx has been offering daily high-temperature markets via Interactive Brokers' ForecastTrader since November 2025. Patrick Brown, head of climate analytics at Interactive Brokers, found that prediction markets were more accurate than the National Weather Service.
Why would traders beat meteorologists with billion-dollar supercomputers?
They're not "beating" them. They're aggregating them. A prediction market on tomorrow's high temperature in Chicago doesn't replace the weather models. It combines them. Traders who follow the European model, the GFS model, local radar, and even look out the window all contribute to the price. The result is an ensemble of all available information, weighted by confidence.
This is the prediction market thesis in its purest form: markets as information aggregators. Not better than any individual expert, but better than any individual expert at combining all available expertise.
If markets can improve weather forecasting, they can improve forecasting of economic indicators, disease outbreaks, supply chain disruptions. The category is about to get much bigger.
The prediction market industry is in its regulatory crucible. Here's the scorecard:
My read: federal primacy wins. The CFTC is suing states, which means they want jurisdiction. Kalshi's regulatory moat deepens with each court victory. The Supreme Court case will be the final word. Long-term bullish for the industry. Short-term, expect volatility around rulings.
| Market | Issue | Call | Entry | Current | Status |
|---|---|---|---|---|---|
| Hormuz April | #1 | NO at 38% | 38% | 9% | Virtually resolved. +46.7% |
| Hormuz May | #1 | NO at 69% | 69% | 59% | Tracking right. +34.3% |
Fictional $1,000 portfolio (started April 20): now worth $1,336 (+33.6% in 2 days). Two calls, both correct direction. The April call is essentially money in the bank. May gave back a few points today (59% vs 55% earlier) but the structural thesis is intact.
Weekly prediction market analysis. Free. No spam.