Highest ROI trades on Polymarket

The biggest return-on-cost trades that hit — someone took a long-shot position and it paid. Ranked by ROI (profit ÷ cost), from every resolved position on-chain. Click any trader to explore their full history.

Top trade

0x…25 turned $4.5K into $37.5K

7.3× ROI

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Resolved within

All time 7d 30d 90d 1y

#	Trader	Market	Entry	Cost	Profit	ROI	Resolved
1	0x…25	US x Iran permanent peace deal by June 15, 2026?	12.0¢	$4.5K	+$33.0K	7.3×	Jun 18, 2026
2	Mi…in	Will the Iran ceasefire continue through May 25?	11.5¢	$1.6K	+$12.3K	7.7×	May 26, 2026
3	fg…hr	US announces new Iran agreement/ceasefire extension by June 15?	8.6¢	$768.92	+$6.0K	7.8×	Jun 15, 2026
4	Go…21	Will the Iran ceasefire continue through May 27?	10.2¢	$999.52	+$8.8K	8.8×	May 26, 2026
5	w…o	Will Oh Se-hoon win the 2026 Seoul Mayoral Election	10.0¢	$614.50	+$5.5K	9.0×	Jun 4, 2026
6	co…r4	Iran closes its airspace by June 8?	5.6¢	$550.18	+$5.3K	9.7×	Jun 12, 2026
7	0x…27	Will the Iran ceasefire continue through May 26?	8.5¢	$543.00	+$5.9K	10.8×	May 26, 2026
8	M…P	Will the Iran ceasefire continue through May 25?	3.5¢	$880.85	+$10.1K	11.5×	May 26, 2026
9	0x…bf	US x Iran permanent peace deal by June 15, 2026?	7.8¢	$2.2K	+$26.6K	11.8×	Jun 18, 2026
10	yu…52	Iran closes its airspace by May 24?	7.7¢	$1.4K	+$17.2K	12.1×	May 27, 2026
11	te…se	Will the Iran ceasefire continue through May 25?	6.5¢	$858.69	+$12.3K	14.4×	May 26, 2026
12	as…av	US x Iran permanent peace deal by June 15, 2026?	6.3¢	$783.64	+$11.6K	14.8×	Jun 18, 2026
13	Zo…ga	Will Donald Trump publicly insult Keir Starmer by June 30, 2026?	6.1¢	$570.48	+$8.8K	15.4×	Jun 30, 2026
14	Sn…r7	Will Jeffrey Kessler be the Democratic nominee for Senate in West Virginia?	6.0¢	$538.72	+$8.4K	15.7×	May 13, 2026
15	0x…37	US and Iran sign an agreement by June 15, 2026?	5.8¢	$695.77	+$11.2K	16.1×	Jun 18, 2026
16	Mo…ey	US x Iran permanent peace deal by June 15, 2026?	5.7¢	$850.00	+$14.2K	16.6×	Jun 18, 2026
17	Wh…an	Will Andy Burnham be the next Prime Minister of the United Kingdom in 2026?	4.2¢	$553.89	+$12.5K	22.6×	Jul 20, 2026

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ROI = realized profit ÷ cost basis on a single resolved position. Past performance does not predict future results. Not financial advice.