SpaceX IPO: Officially added to S&P 500 by...?: live odds and probabilities
The market favorite is March 31, 2027 at 50.0%, ahead of December 31, 2026 at 3.8%. $31K traded across 2 outcomes.
Favorite
24h move
Volume
Closes
All outcomes
| Outcome | Probability | 24h |
|---|---|---|
| March 31, 2027 | 50.0% | 0.0 |
| December 31, 2026 | 3.8% | -0.1 |
Prices are the Polymarket mid or last trade at 2026-11-06 03:05 UTC. A price of 64¢ implies roughly a 64% chance. Prices include spread and are not forecasts by BetG8.
Price history
Market rules and resolution
The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. This market will resolve to "Yes" if S&P Global Inc. announces that SpaceX will be added to the S&P 500 index by the listed date, 11:59 PM ET. Otherwise, this market will resolve to "No." An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date. The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).
The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. This market will resolve to "Yes" if S&P Global Inc. announces that SpaceX will be added to the S&P 500 index by March 31, 2027, 11:59 PM ET. Otherwise, this market will resolve to "No." An announcement from S&P will qualify for a "Yes" resolution, regardless of whether the listed company has actually been added to the S&P 500 index by the resolution date. The primary resolution source will be official announcements from S&P Global Inc. (https://www.spglobal.com/en/press/press-release).
How to read this market
Frequently asked questions
- Who is favored in "SpaceX IPO: Officially added to S&P 500 by...?"?
- As of November 6, 2026, March 31, 2027 is the favorite at 50.0%, followed by December 31, 2026 at 3.8%.
- When does this market resolve?
- The market is scheduled to close on April 1, 2027. It resolves under Polymarket's rules once the outcome is known, which can be earlier or later than the listed date.
- How much has been traded?
- $31K in total and $0 in the last 24 hours, with about $4K of resting liquidity.
- Can I trade this market?
- Polymarket restricts access by location; the US version (Polymarket US) and the offshore site have different rules and fee schedules. Check availability in your jurisdiction. BetG8 earns a referral fee from the Polymtrade links on this page.
Related on BetG8
Data: Polymarket Gamma and CLOB APIs, fetched by BetG8 at the time shown above. Venues may restrict access by location. 18+ only.