Ken Griffin
MTSR

Ken Griffin’s Metsera Inc MTSR Stock Holding History

Ken Griffin’s Portfolio MTSR Stock Details MTSR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-27,526
Closed -$1.44M – 14542
2025
Q3 		$1.44M Sell
27,526
-203,292
-88% -$7.5M ﹤0.01% 6756
2025
Q2 		$6.57M Buy
230,818
+182,323
+376% +$4.53M ﹤0.01% 3662
2025
Q1 		$1.32M Buy
+48,495
New +$1.37M ﹤0.01% 6341

Other funds holding MTSR

IA
IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

Ken Griffin's MTSR Position: Q4 2025 in Review

Ken Griffin sold out of Metsera Inc (MTSR) in Q4 2025, closing a stake of 27,526 shares — an estimated $1.44M sold.

Ken Griffin first reported a position in MTSR in Q1 2025 and held it in 3 quarters. The position peaked at $6.57M in Q2 2025. 1 fund tracked by Wall St. Rank holds MTSR as of Q4 2025.

  • Ken Griffin reported no remaining Metsera Inc position as of Q4 2025 after selling out during the quarter.
  • Ken Griffin sold 27,526 Metsera Inc shares in Q4 2025, an estimated $1.44M.
  • Ken Griffin first reported a position in Metsera Inc in Q1 2025 and held it in 3 quarters.
  • Ken Griffin's Metsera Inc position peaked at $6.57M in Q2 2025.
  • 1 fund tracked by Wall St. Rank held Metsera Inc as of Q4 2025.

Based on Citadel Advisors's 13F filing for Q4 2025, filed 17 Feb 2026.