---
title: "Which companies added to S&P 500 in Q4 2026?"
canonical_url: https://betcrypto.now/events/which-companies-added-to-sp-500-in-q4-2026
status: live
trading_closes_at: 2027-01-01T04:59:00+00:00
total_volume_usd: 18984.22
venues: ["Polymarket"]
categories: ["Tech & Science"]
prices_as_of: 2026-11-07T04:19:03+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/which-companies-added-to-sp-500-in-q4-2026
---

# Which companies added to S&P 500 in Q4 2026?

Live · $18,984 traded · listed on Polymarket

## About

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).

_From Polymarket's listing._

## SoFi Technologies (SOFI)

| Outcome | Probability | Cheapest | Polymarket |
|---|---|---|---|
| No | 73% | 89¢ on Polymarket | 89¢ |
| Yes | 27% | 43¢ on Polymarket | 43¢ |

## Other markets

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- Strategy (MicroStrategy) (MSTR) — 2 outcomes

_Every market's prices are on the event page._

## Open on a venue

- [Polymarket](https://betcrypto.now/go/e/1029151?via=md)

---

Probability is the cross-venue consensus (book midpoints, 0–100%). Venue columns are what buying costs there (the ask). Prices move constantly; re-check at the canonical URL or the [JSON API](https://betcrypto.now/api/v1/events/which-companies-added-to-sp-500-in-q4-2026).

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