Kalshi and Polymarket merger odds top 50% after Musk earnings call comment
Traders on Kalshi and Polymarket are now pricing a better-than-even chance that SpaceX and Tesla will merge. The repricing followed Elon Musk's October 20, 2026 earnings call remark that combining the two companies would be a good idea. As of October 25, both platforms show the deal at above 50% probability. The contract on Kalshi had already climbed to 60% earlier in the week after a Barclays note, though that figure came with thin liquidity and no listed volume or open interest.
The merger contract is becoming a live test of whether prediction markets can price corporate events faster than sell-side research. When Kalshi's odds hit 60% after Barclays published a 19% estimate, traders inverted the bank within days. That speed matters for platform positioning: Kalshi needs concrete examples of contracts that move ahead of analyst notes to compete with Polymarket for the corporate-milestone narrative. For traders, the gain is mostly on paper. The Kalshi contract carries no listed volume or open interest, so exiting at mid-price may mean accepting a wide spread.
The March 2027 deadline leaves more than a year of Musk tweets, regulatory noise, and no deal announcement to erode the premium. The structural risk is resolution quality. A merger depends on votes, filings, and disclosures that Musk controls the timing of, and the contract must settle on verifiable corporate actions rather than ambiguous statements. Polymarket's Tesla Roadster flight bet showed how physical-product milestones can resolve cleanly; this one lacks that clarity.
The SpaceX-Tesla merger contract joins Kalshi's existing Tesla-SpaceX line and Polymarket's Roadster milestone market in a running bet on Musk-linked corporate events that platforms are using to lure traders away from equity options.