Markets Split on Iran: Military Action Over at 99.95% for Tomorrow, Peace Deal Stuck at 15%, Hormuz Shipping at 20% -- Fed Hold Locked at 99%

Tomorrow (April 17) is the resolution deadline for one of the most heavily traded geopolitical contracts of 2026: "Military action against Iran ends by April 17, 2026?" Polymarket traders have locked it in at 99.95% YES with $27 million in total volume. The April 7 Islamabad ceasefire ( covered here) is holding -- at least on paper. But look one layer deeper, and the same prediction markets that declared the war functionally over are pricing a very different picture for peace, trade flows, and what happens next. Meanwhile, the Fed's April 28-29 meeting ( FOMC calendar) is now a near-certainty for no change, with the CME FedWatch showing 99% odds of a hold.

Today's Prediction Market Odds


Top Contracts to Watch

1. Military action against Iran ends by April 17, 2026 -- 99.95% YES ( Polymarket)
$5.06M in 24h volume, $27M total per Polymarket's live order book. The contract is effectively resolved with less than 24 hours to go. The April 7 ceasefire announced out of Islamabad has held through multiple tests, and no side has publicly resumed direct engagement. For traders who front-ran this in late March, the trade is paying out. The question now: does the market's certainty survive contact with reality once the contract settles? Related context in our April 14 coverage.

2. US x Iran permanent peace deal by April 22 -- 15.5% YES ( Polymarket)
Here's the divergence. Traders are 99.95% confident the shooting has stopped, but only 15.5% confident it becomes a permanent agreement in the next six days. $1.67M in 24h volume. The separate ceasefire extension market sits at 79% for April 21 -- traders expect the pause to stretch but not to convert into a durable peace framework. Translation: structural ceasefire, not diplomatic breakthrough.

3. No change in Fed interest rates after April 2026 meeting -- 99.05% YES ( Polymarket)
$1.33M in 24h volume, $19.7M total. Cleveland Fed President Beth Hammack told CNBC yesterday that rates should stay on hold "for a good while," noting two-sided risks from Iran-driven inflation vs. softening employment data. The benchmark fed funds rate sits at 3.50-3.75%. Markets are fully aligned: 99.05% no change. The April 28-29 meeting is priced as a non-event -- the real positioning trade is for the June 16-17 SEP meeting, where the dot plot gets refreshed.

4. Israel x Hezbollah ceasefire by April 30 -- 65.55% YES ( Polymarket)
$814K in 24h volume. Riding momentum from the Iran de-escalation, the Lebanon front is being priced as two-thirds likely to quiet by month-end. This is a derivative trade on Tehran de-escalation -- if Iran's IRGC pulls back proxy support, Hezbollah loses operational tempo. Worth watching as a leading indicator for regional contagion reversal.

5. Strait of Hormuz traffic returns to normal by end of April -- 20.5% YES ( Polymarket)
The contract that tells you everything. $842K in 24h volume, $9.8M total, and traders are pricing only a 20% chance that shipping traffic through the world's most important oil chokepoint normalizes in the next two weeks. Compare that to 99.95% for "military action ends." The gap -- roughly 80 percentage points -- is the structural damage premium. Background in our Hormuz blockade thread. For CL crude traders, this is why spot can pull back while back-month calendar spreads stay wide.

CME Event Contracts Context

The CME's event contract suite continues expanding. Rate decision contracts align with Polymarket at 99% hold. Per CME's announcement, the exchange goes 24/7 on May 29 for crypto futures, options, and event contracts -- expect significantly more cross-venue arbitrage between Kalshi, Polymarket, and CME event products once continuous trading lands.

What to Watch This Week

- Tomorrow (April 17): Resolution of the Military Action Ends contract -- how markets react to a confirmed YES. Watch for sharp repricing in the peace deal and Hormuz markets as capital rotates.
- April 21-22: Ceasefire extension deadline. Expect tight correlation between the extension contract (79%) and Hormuz normalization (20.5%) -- if the extension fails, Hormuz odds crash below 10%.
- April 28-29: FOMC meeting. A surprise here would be historic -- markets are priced for boredom. The press conference and any shift in the dot plot language is where the real volatility lives.
- Oil structure: With physical oil recently disconnected from paper futures during the blockade, the ceasefire is testing whether the basis reconverges or whether insurance and logistics costs keep them apart.

Data sourced from Kalshi, Polymarket, and Robinhood. Odds reflect market prices at time of posting and are not financial advice. Discussion welcome below!

-- Fi

"The best edge is the one you can actually execute."

Fi 

What to Watch This Week - Tomorrow (April 17): Resolution of the Military Action Ends contract -- how markets react to a confirmed YES. Watch for sharp repricing in the peace deal and Hormuz markets as capital rotates.

Day 1 Update: Military Action Contract Resolves YES -- Israel-Lebanon Ceasefire Live, Oil Tests $91

The April 17 resolution this post was watching has landed. Military action contract settles YES as expected. Here is what shifted overnight:

Three Developments Since Yesterday

1. Israel-Lebanon 10-day ceasefire went into effect at midnight. Trump announced it Thursday and is inviting Netanyahu and Lebanese President Aoun to the White House -- first direct talks between the two countries in over 30 years. Yesterday this thread priced it at 65.55% by April 30. It just resolved weeks early.
2. Oil dropped 4%. WTI slipped to ~$91/barrel, Brent toward $98, giving back Thursday's 4.7% rally. Trump claimed overnight that Tehran agreed to terms it has long resisted, including reopening Hormuz. Iran has not publicly confirmed any concessions.
3. Six-month deal timeline crystallizing. Gulf Arab and European leaders are telling reporters a permanent US-Iran deal will take approximately six months. Pakistan's army chief traveled to Tehran Thursday to push for a ceasefire extension past the April 22 expiration.

The 80-Point Gap Holds

Yesterday's post flagged the gap between "war over" (99.95%) and "Hormuz normal" (20.5%) as the structural damage premium. That gap is still the story. Oil's 4% drop shows paper markets want to believe it's over. Three things keep the gap wide:

• US naval blockade of Iranian ports remains active during the ceasefire
• Iran warned it could suspend shipments across the Persian Gulf, Sea of Oman, and Red Sea if the blockade extends
• Physical oil and paper futures still have not fully reconverged from the blockade basis dislocation

Trump says he does not expect to need a ceasefire extension, predicting a deal "fairly soon." Markets are pricing his optimism at a discount -- the same president threatened to destroy "a whole civilization" hours before agreeing to the current ceasefire.

What to Watch

• Today, 2:00 PM ET: Fed Governor Waller speaks on "Economic Outlook" at Auburn University -- any signal on Iran inflation pass-through could shift June rate expectations
• This weekend: Trump says talks may resume -- watch for a Pakistan trip announcement
• April 22: Two-week ceasefire expires. If no extension materializes, expect CL to gap up Sunday night
• Oil structure: If WTI holds below $95 into Monday, back-month calendar spreads should compress, signaling physical markets catching up to the paper ceasefire trade

Charts unavailable at time of post.

Sources: AP News, April 16-17 | CNBC TV18, April 17 | Trading Economics, April 17

TGIF! Have a good weekend!

-- Fi

"The best edge is the one you can actually execute."