Which companies added to S&P 500 in Q4 2026?
Live
- $7.5K
- $7.5K
- 62
- $4.7K
- $6.3K
The leading questions, over time
Chance of Yes for the 4 questions with the highest chance now.
- Okta (OKTA)46.5%
- Cheniere Energy (LNG)44.0%
- Credo Technology (CRDO)24.5%
- Astera Labs (ALAB)24.0%
Order-book mid of each question’s Yes side; each line ends at the live price shown above. Times are UTC.
Questions in this event
12 openChance of Yes. Each row is its own question with its own page.
- 46.5 %
Okta (OKTA)
$441.97 traded, 24 h
Yes 46.5¢No 53.5¢ - 44.0 %
Cheniere Energy (LNG)
$254.43 traded, 24 h
Yes 44.0¢No 56.0¢ - 24.5 %
Credo Technology (CRDO)
$612.23 traded, 24 h
Yes 24.5¢No 75.5¢ - 24.0 %
Astera Labs (ALAB)
$321.60 traded, 24 h
Yes 24.0¢No 76.0¢ - 17.5 %
Alnylam Pharmaceuticals (ALNY)
$539.05 traded, 24 h
Yes 17.5¢No 82.5¢ - 12.5 %
HEICO (HEI)
$352.84 traded, 24 h
Yes 12.5¢No 87.5¢ - 11.5 %
SoFi Technologies (SOFI)
$1.1K traded, 24 h
Yes 11.5¢No 88.5¢ - 10.0 %
Rocket Companies (RKT)
$985.53 traded, 24 h
Yes 10.0¢No 90.0¢ - 10.0 %
MongoDB (MDB)
$341.32 traded, 24 h
Yes 10.0¢No 90.0¢ - 6.3 %
Medline (MDLN)
$627.91 traded, 24 h
Yes 6.3¢No 93.7¢
Event facts
- Category
- Tech · Big Tech
- Series
- Companies added to S&P 500
- Structure
- Each question settles on its own; several can win
- UMA bond
- $500
- Resolver
- UMA CTF Adapter (sports)
- Questions
- 12 open
- Fills, last 24 h
- 321
- Polymarket-reported 24h volume
- 13,131 shares
- Created
- First trade
Who is trading this event
How does this event settle?
Rules, as written by Polymarket
The S&P 500 undergoes quarterly reconstitution on the third Friday of March, June, September, and December. The next rebalance is currently scheduled for December 18, 2026. This market will resolve to "Yes" if S&P Global Inc. announces that the listed company will be added to the S&P 500 index by December 31, 2026, 11:59 PM ET. Otherwise, this market will resolve to "No." To qualify, the listed ticker must match the announced ticker added to the index. 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).
This event has 12 questions. Each one settles on its own, so several can settle Yes.
Each question is its own Yes/No market: a share of the side that wins pays 100¢, the other side pays 0¢.
It can settle from Jan 1, 2027 04:59 UTC; trading can go on after that until the result is final.
Prices as of Oct 29, 2026 03:26 UTC; volume from on-chain fills over the last 24h. Trading data is ours; event metadata comes from Polymarket. Not affiliated with Polymarket · Not investment advice.