Investing.com -- Amneal Pharmaceuticals (NASDAQ:AMRX) stock jumped 5.9%, LegalZoom.com (NASDAQ:LZ) rose 5.2%, and Dutch Bros (NYSE:BROS) gained 2.9% in after-hours trading Tuesday after S&P Dow Jones Indices announced these companies would be added to its indices.
S&P Dow Jones Indices revealed multiple changes to its S&P MidCap 400 and S&P SmallCap 600 indices, triggering price movements in several affected stocks. The changes are scheduled to take effect in late January and early February 2026.
TTM Technologies (NASDAQ:TTMI), which will move from the SmallCap 600 to the MidCap 400, saw its shares increase 0.4%. American Healthcare REIT (NYSE:AHR) gained 2.9% on news it would join the MidCap 400, while Apellis Pharmaceuticals (NASDAQ:APLS) rose 2% as it’s set to enter the SmallCap 600.
The index changes are primarily due to pending acquisitions. S&P SmallCap 600 constituent SM Energy (NYSE:SM) is acquiring Civitas Resources (NYSE:CIVI), while Rayonier (NYSE:RYN) is purchasing PotlatchDeltic (NASDAQ:PCH). Fifth Third Bancorp (NASDAQ:FITB) is in the process of acquiring Comerica (NYSE:CMA), and Huntington Bancshares (NASDAQ:HBAN) is buying Cadence Bank (NYSE:CADE).
Additionally, LegalZoom.com will replace Elme Communities (NYSE:ELME) in the SmallCap 600, as Elme has announced ongoing liquidation activities.
The first round of changes will take effect prior to market open on January 30, 2026, with TTM Technologies replacing Civitas Resources in the MidCap 400 and Amneal Pharmaceuticals taking TTM’s spot in the SmallCap 600. The remaining changes will be implemented before trading begins on February 2, 2026.
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