OpenAI IPO closing market cap above ___ ?
Polymarket traders put "$800B" at 78.8% on "OpenAI IPO closing market cap above ___ ?". $275 traded in the last 24 hours. There are 5 possible outcomes. It resolves on Jan 1.
Most likely right now
$800B
–79%
EconomyVol $275Total volume $1.6MLiquidity $14KComments 3in 1.2 years (Jan 1)
Current probability
Oct 9 · right column is the 24-hour change (pp)
0%50%100%
$800B
78.8%
–
$1T
72.5%
▼0.5
$1.2T
63.0%
–
$1.4T
56.5%
▲3.5
$1.6T
56.5%
▼0.5
Probability over time
$800B
$1T
$1.2T
$1.4T
$1.6T
2026-08-25 ~ 2026-10-09 · y-axis %
