Two markets this week, both Iran-adjacent, are showing the kind of split that makes prediction markets actually interesting.
The peace deal contract has the top traders mostly lined up on YES, with one holdout on NO. The Hormuz contract is wilder; the top-ranked traders are all on YES, but one outsized $163K position on the other side outweighs everyone else combined.
This is what makes markets efficient: people with skin in the game putting money where their mouth is.
US X Iran Permanent Peace Deal By May 31?
Current price: 34% YES Top 30 positioning: 7 of the top 30 are in this market. 6 on YES, 1 on NO. Combined position size: $126K
Who's betting what
This is the most-positioned Iranian market we've covered. Seven of the top 30 traders have stakes here, with the dollars heavily on YES, about $117K on YES versus $9K on NO.
The biggest position is $83K, entered at 37% and currently down 10% as the price drifted lower. Another $24K position entered at 28%, meaning that the trader bought when the market thought a deal was nearly impossible, and is currently up 20%. A smaller $10K position entered right at 34% and is essentially flat. The lone NO holder put in $9K at a 64% entry (paying 36¢ for NO) and is currently up 4%.
At 34% YES, a contract pays roughly 2.9x if it resolves. The dollar-weighted majority is heavily on YES, but the headcount has one dissenter, and that dissenter entered when most traders thought the war was effectively over.
What it might signal
Friday's letter from Trump declaring hostilities "terminated" is the central catalyst. The YES traders are betting that the political and legal pressure of the War Powers expiration forces a structural resolution, even if the path is messy. Iran sent its 14-point proposal to Pakistani mediators last week, and Trump said both sides had "made strides."
The biggest YES position entered when the price was higher than it is now, which means that the trader is holding through a drawdown rather than reacting to news. That's the pattern we see consistently: the top traders position before the catalyst arrives and ride out the volatility while less-experienced traders chase headlines in and out.
The lone NO holder is reading Iran's actual posture: Supreme Leader Mojtaba Khamenei pledged not to relinquish nuclear or missile capabilities and said Tehran retains control of the strait. That's not the language of someone preparing to sign a permanent deal in 24 days.
The context
The May 31 deadline is tight. Trump's letter declaring hostilities "terminated" satisfies the War Powers clock without ending the underlying dispute, which means the administration has bought time but not closure. Hegseth told the Senate the ceasefire has paused the deadline, while Senator Susan Collins broke ranks with Republicans to argue the deadline isn't a suggestion. The Strait of Hormuz remains 90% closed, the blockade is still active, and Iran is reportedly demanding crypto payments for vessel passage.
A "permanent peace deal" by May 31 would require Iran to accept terms it has publicly rejected, the US to lift the blockade, and both sides to commit to a verification regime. Brent at $110 and gas at $4.39 are the economic pressures on both sides to find an exit, but neither has shown a willingness to give up its core position.
What to watch
The next round of Pakistani-mediated talks is the trigger. If Iran submits a revised proposal that the US accepts as a basis for negotiation, this contract spikes. If May 31 arrives with the blockade still in place and no formal agreement, the contract resolves NO regardless of what either side has said publicly.
Strait of Hormuz Traffic Returns to Normal by the End of May?
Current price: 23% YES Top 30 positioning: 4 of the top 30 are in this market. 3 on YES, 1 on NO. Combined position size: $219K
Who's betting what
This is the most interesting positioning split we've covered. Four traders, one outsized disagreement.
Three of the four are on YES. The biggest YES position is $36K, entered at 26% and currently down 13% as the price drifted to 23%. Another $21K entered at 24% and is down 5%. A smaller YES position is essentially flat from a 34% entry.
But the fourth trader is on NO with $163K, a position larger than the three YES positions combined. They entered at 79% (paying 21¢ for NO) and are currently flat at 78%.
So the dollar-weighted majority is on NO ($163K versus $57K), but three of the four top traders in this market are on YES. These traders are clearly seeing things differently, and the trader sitting on the $163K NO position has put more conviction into this market than anyone else has on either side.
What it might signal
The YES traders are betting that the strait reopens enough to qualify as "normal" by month-end, likely on some combination of a peace deal announcement, a ceasefire extension that includes Hormuz access, or Iran unilaterally easing transit restrictions to relieve pressure on its own oil exports. Their 24-26% entries suggest they bought when sentiment was even more pessimistic than now.
The $163K NO trader is reading the operational reality. Tanker traffic is still 90% below normal, Hapag-Lloyd has said it needs 6-8 weeks to resume normal operations, and that clock hasn't started because conditions haven't stabilized. The strait isn't reopening on a calendar deadline; it reopens when the underlying conflict resolves, and that probably isn't happening by May 31.
When most of the top traders in a market disagree with the largest dollar position, you have to ask which side did the better homework. The YES traders have the edge on Polymarket's tracking system. The NO trader has more skin in the game than everyone else combined.
The context
Iran declared the strait "completely open" three weeks ago. It wasn't. Tanker transits are still 90% below normal. The US blockade has turned back 45 ships. Brent is at $110 because the Strait is functionally closed, regardless of what either side says publicly. The contract's resolution criteria likely require traffic to return to pre-war volume levels, which is a much higher bar than "Iran says it's open" or "a few tankers got through."
What to watch
Tanker transit data is the only thing that matters here. If actual traffic numbers climb sharply in the next two weeks (not five tankers per week, but 30-40+), the YES side pays off, and the contract crosses 50%. If the blockade continues and Iran maintains its toll system, the $163K NO position pays out, and the top traders take a loss.
The Wrap
Two markets, two different degrees of disagreement. The peace deal contract has a clear majority conviction on YES, with one trader fading the optimism. The Hormuz contract has most of the top traders on YES, while a single bigger position sits on NO and outweighs them combined.
The Hormuz market is the more philosophically interesting one. Either that one trader saw something the others missed, or they're a confident bet that's about to get tested. We'll know by May 31.
See all top trader positions across every Polymarket contract at flowframe.xyz/smart-money.
