EC
MTSR

EcoR1 Capital’s Metsera Inc MTSR Stock Holding History

EcoR1 Capital’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
-271,529
Closed -$14.2M – 41
2025
Q3 		$14.2M Hold
271,529
– – 0.68% 21
2025
Q2 		$7.72M Buy
271,529
+221,529
+443% +$5.5M 0.46% 28
2025
Q1 		$1.36M Buy
+50,000
New +$1.42M 0.08% 41

Other funds holding MTSR

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

EcoR1 Capital's MTSR Position: Q4 2025 in Review

EcoR1 Capital sold out of Metsera Inc (MTSR) in Q4 2025, closing a stake of 271,529 shares — an estimated $14.2M sold.

EcoR1 Capital first reported a position in MTSR in Q1 2025 and held it in 3 quarters. The position peaked at $14.2M in Q3 2025. 1 fund tracked by Wall St. Rank holds MTSR as of Q4 2025.

  • EcoR1 Capital reported no remaining Metsera Inc position as of Q4 2025 after selling out during the quarter.
  • EcoR1 Capital sold 271,529 Metsera Inc shares in Q4 2025, an estimated $14.2M.
  • EcoR1 Capital first reported a position in Metsera Inc in Q1 2025 and held it in 3 quarters.
  • EcoR1 Capital's Metsera Inc position peaked at $14.2M in Q3 2025.
  • 1 fund tracked by Wall St. Rank held Metsera Inc as of Q4 2025.

Based on EcoR1 Capital's 13F filing for Q4 2025, filed 17 Feb 2026.