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Kalshi locks & underrounds

In a one-winner Kalshi event, exactly one outcome settles at 100¢, so the whole field should cost about 100¢ to buy. When it costs less, that’s an underround, a lock: priced-in profit before fees and fills. This page scans every one-winner field continuously, updated every few minutes.

Live now · fields under 100¢
Who will be the next COO of Goldman Sachs?
Other · 5 outcomes
69¢
31¢ under fair
Who will be named as Xi Jinping's successor?
Other · 14 outcomes
80¢
20¢ under fair
2030 Mexico Presidential election winner?
Other · 13 outcomes
87¢
13¢ under fair
Which of these African leaders will leave office next?
Other · 10 outcomes
90¢
10¢ under fair
Who will be the world's second trillionaire?
Other · 12 outcomes
99¢
1¢ under fair

⚠ Verify before acting: these are our scanner’s asks, not executable quotes. Fees, fills at size, and stale thin-outcome quotes can all erase or fake a thin underround.

Get emailed the moment a lock appears PRO
Our server re-scans every field around the clock. Each event alerts once, within minutes of appearing. Turn it on →
Closest to fair right now
What will be the largest source of global primary energy consumption in 2030?
100¢
Locks our alert has caught
KXNEXTTRILLIONAIRE-3399¢ · Oct 29
KXBRAZILPRESPARTY-30OCT2799¢ · Oct 29
KXMILLENNIUMNEXT-4576¢ · Oct 29
KXMEXICOPRES-30JUN0282¢ · Oct 28
KXBRAZILPRES-30OCT2770¢ · Oct 28
KXXISUCCESSOR-45JAN0199¢ · Oct 28
KXMEXICOPRESPARTY-30JUN0298¢ · Oct 28
KXPRIMEENGCONSUMPTION-3099¢ · Oct 26
KXISRDEFMIN-3094¢ · Oct 25
KXNEXTATLFED-30JAN0199¢ · Oct 20
KXNEWPOPE-7040¢ · Oct 15
KXNEXTSPEAKER-3199¢ · Oct 10
Subscribers with lock alerts on were emailed within minutes of each. Past locks say nothing about future ones.

Common questions

What is a lock on Kalshi?
A lock is a one-winner event whose outcomes collectively cost less than 100 cents to buy, an underround. Since exactly one outcome must settle at 100 cents, buying the whole field below 100 cents is priced-in profit, before fees and fills.
Why do underrounds appear?
Usually because one outcome's quote goes stale or a thin book drifts while attention is elsewhere. They're structural mistakes, which is why they're rare and vanish within minutes of being noticed.
Is a Kalshi lock really free money?
Not automatically. The per-contract fee can erase a thin underround, filling every leg at size moves prices against you, and a stale quote on one thin outcome can fake the whole thing. Every leg needs verifying on Kalshi at executable prices before it's real.
How do I find Kalshi arbitrage opportunities?
Scan every one-winner event's full field cost continuously. That's what this page and the Value Scanner do, and Pro users can get an email within minutes of an underround appearing, which matters because locks rarely survive long.

Related: the Value Scanner (full pricing-tightness board), underround and lock in the glossary, and the arbitrage calculator. Research signal, not financial advice.