Sirius XM Holdings to Replace Masimo in the S&P MidCap 400

Sirius XM Holdings Inc. (SIRI) will replace Masimo Corp. (MASI) in the S&P MidCap 400 index effective June 11, 2026. The change follows Danaher Corp.'s acquisition of Masimo.

By S&P Dow Jones Indices · PR Newswire · June 8, 2026, 22:09 UTC

Tickers: $DHR $MASI $SIRI

Topics: company addition/removal S&P MidCap 400 stock index changes

Read the full article at PR Newswire

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