Every S&P Index change, with the price reaction

One page for each announcement: who joined, who left, and what the share prices did in the minutes and hours after the news.

Effective

July 8, 2025 at 5:00:00 PM

S&P index changes, July 2025: Datadog

On 2 July 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P 500. Datadog replaced Juniper Networks in the S&P 500.

Effective

June 30, 2025 at 5:00:00 PM

S&P index changes, June 2025: Ralliant

On 25 June 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Ralliant replaced Wolfspeed in the S&P SmallCap 600.

Effective

June 23, 2025 at 5:00:00 PM

S&P index changes, June 2025: APi Group

On 18 June 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P MidCap 400. APi Group replaced United States Steel in the S&P MidCap 400.

Effective

May 21, 2025 at 5:00:00 PM

S&P index changes, May 2025: Pegasystems

On 19 May 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P MidCap 400. Pegasystems replaced Nordstrom in the S&P MidCap 400.

Effective

May 18, 2025 at 5:00:00 PM

S&P index changes, May 2025: Coinbase Global

On 12 May 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P 500. Coinbase Global replaced Discover Financial Services in the S&P 500.

Effective

April 30, 2025 at 5:00:00 PM

S&P index changes, April 2025: Okta

On 28 April 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P MidCap 400. Okta replaced Berry Global Group in the S&P MidCap 400.

Effective

April 16, 2025 at 5:00:00 PM

S&P index changes, April 2025: Sterling Infrastructure

On 14 April 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Sterling Infrastructure replaced Patterson Companies in the S&P SmallCap 600.

Effective

April 15, 2025 at 5:00:00 PM

S&P index changes, April 2025: Enact Holdings

On 9 April 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Enact Holdings replaced SolarWinds in the S&P SmallCap 600.

Effective

March 30, 2025 at 5:00:00 PM

S&P index changes, March 2025: Cava Group

On 26 March 2025, S&P Dow Jones Indices announced 4 index changes affecting 4 companies in the S&P MidCap 400 and S&P SmallCap 600. The most notable move was Cava Group joining the S&P MidCap 400.

Effective

March 23, 2025 at 5:00:00 PM

S&P index changes, March 2025 rebalance

On 7 March 2025, S&P Dow Jones Indices announced 54 index changes affecting 38 companies in the S&P 100, S&P 500, S&P MidCap 400 and S&P SmallCap 600. The most notable move was DoorDash joining the S&P 500.

Effective

March 10, 2025 at 5:00:00 PM

S&P index changes, March 2025: Albertsons Companies

On 4 March 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P MidCap 400. Albertsons Companies replaced Aspen Technology in the S&P MidCap 400.

Effective

March 5, 2025 at 4:00:00 PM

S&P index changes, February 2025: Entegris

On 27 February 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P MidCap 400. Entegris replaced Arcadium Lithium in the S&P MidCap 400.

Effective

February 24, 2025 at 4:00:00 PM

S&P index changes, February 2025: SanDisk

On 19 February 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. SanDisk replaced Leslie in the S&P SmallCap 600.

Effective

February 18, 2025 at 4:00:00 PM

S&P index changes, February 2025: Kadant

On 13 February 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Kadant replaced Inari Medical in the S&P SmallCap 600.

Effective

February 12, 2025 at 4:00:00 PM

S&P index changes, February 2025: Acushnet Holdings

On 10 February 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Acushnet Holdings replaced Retail Opportunity Investments in the S&P SmallCap 600.

Effective

February 9, 2025 at 4:00:00 PM

S&P index changes, February 2025: Millrose Properties

On 5 February 2025, S&P Dow Jones Indices announced 2 index changes affecting 2 companies in the S&P SmallCap 600. Millrose Properties replaced Ironwood Pharmaceuticals in the S&P SmallCap 600.

Effective

January 26, 2025 at 4:00:00 PM

S&P index changes, January 2025: Guidewire Software

On 22 January 2025, S&P Dow Jones Indices announced 4 index changes affecting 3 companies in the S&P MidCap 400 and S&P SmallCap 600. The most notable move was Guidewire Software joining the S&P MidCap 400.

Effective

January 13, 2025 at 4:00:00 PM

S&P index changes, January 2025: Maplebear

On 7 January 2025, S&P Dow Jones Indices announced 4 index changes affecting 3 companies in the S&P MidCap 400 and S&P SmallCap 600. The most notable move was Maplebear joining the S&P MidCap 400.

ARCHIVE

Every S&P Index change, with the price reaction

S&P index changes, July 2025: Datadog

S&P index changes, June 2025: Ralliant

S&P index changes, June 2025: APi Group

S&P index changes, May 2025: Pegasystems

S&P index changes, May 2025: Coinbase Global

S&P index changes, April 2025: Okta

S&P index changes, April 2025: Sterling Infrastructure

S&P index changes, April 2025: Enact Holdings

S&P index changes, March 2025: Cava Group

S&P index changes, March 2025 rebalance

S&P index changes, March 2025: Albertsons Companies

S&P index changes, February 2025: Entegris

S&P index changes, February 2025: SanDisk

S&P index changes, February 2025: Kadant

S&P index changes, February 2025: Acushnet Holdings

S&P index changes, February 2025: Millrose Properties

S&P index changes, January 2025: Guidewire Software

S&P index changes, January 2025: Maplebear