American Century Companies’s Seres Therapeutics MCRB Stock Holding History

American Century Companies's MCRB Position: Q1 2026 in Review

American Century Companies increased its Seres Therapeutics (MCRB) stake by 283% in Q1 2026, buying an estimated $539K and bringing the position to 62,316 shares worth $553K. The position accounts for ﹤0.01% of the portfolio, ranked #2490.

American Century Companies first reported a position in MCRB in Q2 2016 and has held it in 8 quarters since. The position peaked at $3.16M in Q2 2016. 33 funds tracked by Wall St. Rank hold MCRB as of Q1 2026.

• American Century Companies held 62,316 shares of Seres Therapeutics worth $553K as of Q1 2026.
• American Century Companies bought 46,045 Seres Therapeutics shares in Q1 2026, an estimated $539K.
• Seres Therapeutics made up ﹤0.01% of American Century Companies's portfolio in Q1 2026, its #2490 holding.
• American Century Companies first reported a position in Seres Therapeutics in Q2 2016 and has held it in 8 quarters since.
• American Century Companies's Seres Therapeutics position peaked at $3.16M in Q2 2016.
• 33 funds tracked by Wall St. Rank held Seres Therapeutics as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.