Largest IPO of 2026: SpaceX jumps 13 points to 63% on Polymarket

SpaceX gains ground in the 2026 IPO market

SpaceX’s probability of having the largest IPO of 2026 reached 63% on Polymarket, rising 13 percentage points from 50%, according to RG.org’s summary of its 24-hour market movers.

The increase put SpaceX at the top of the IPO market in that comparison. The move represents a shift in traders’ expectations, not confirmation of an offering or its eventual size.

What the comparison captures

RG.org measured the changes between 11:57 p.m. ET on Wednesday and 11:58 p.m. ET on Thursday. Those are the comparison points behind the reported move, rather than a live price at the article’s Oct. 16, 2026, publication time of 11:09 AM ET.

The supplied summary contains the SpaceX figures, but the accompanying source excerpt does not include the IPO table. The material provides no explanation for the increase, competing IPO probabilities, trading volume for this contract or its resolution criteria.

What it means for prediction markets

• The outcome is specific: The 63% reading concerns SpaceX having the largest IPO of 2026. It should not be treated as the probability of a SpaceX listing alone.
• The shift is measurable; its cause is not established: SpaceX gained 13 percentage points over the stated interval, but the supplied reporting does not identify a catalyst.
• Market detail remains limited: Without contract rules or trading-volume figures, the material does not establish how “largest” is measured or how much activity supported the repricing.