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Three constituent changes disclosed by S&P Dow Jones Indices on July 20, 2026, will alter both the S&P MidCap 400 and the S&P SmallCap 600.
(NASD: KRYS), a current S&P SmallCap 600 member, is set to replace Taylor Morrison Home Corp. (NYSE: TMHC) in the MidCap 400. Tutor Perini and V2X will each enter the SmallCap 600.
The MidCap 400 change Krystal Biotech's move is a direct tier promotion, from the SmallCap 600 to the MidCap 400. (NYSE: TMHC) exits to create the slot. Krystal Biotech trades on the Nasdaq under KRYS.
The exit connects the two parts of the announcement. Krystal Biotech leaves a vacancy in the SmallCap 600, and the smaller index picks up two names in return.
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