ACM
SEPN

ADAR1 Capital Management’s Septerna Inc SEPN Stock Holding History

ADAR1 Capital Management’s Portfolio SEPN Stock Details SEPN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$31.5M Sell
940,747
-149,071
-14% -$4.23M 1.44% 11
2026
Q1 		$26.2M Sell
1,089,818
-67,793
-6% -$1.78M 1.54% 13
2025
Q4 		$32.3M Sell
1,157,611
-18,880
-2% -$451K 2.37% 9
2025
Q3 		$22.1M Buy
1,176,491
+329,264
+39% +$4.32M 2.08% 12
2025
Q2 		$8.96M Buy
847,227
+126,379
+18% +$1.04M 1.37% 15
2025
Q1 		$4.17M Buy
+720,848
New +$8.23M 0.77% 36

Other funds holding SEPN

RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
TGV
TRV GP V Boston, Massachusetts $498M AUM 267.53% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return
TGV
TRV GP VI Boston, Massachusetts $232M AUM 247.08% 1-Year Est. Return
SB
Samsara BioCapital Palo Alto, California $1.22B AUM 242.83% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM

ADAR1 Capital Management's SEPN Position: Q2 2026 in Review

ADAR1 Capital Management reduced its Septerna Inc (SEPN) stake by 14% in Q2 2026, selling an estimated $4.23M and leaving 940,747 shares worth $31.5M. The position accounts for 1.44% of the portfolio, ranked #11.

ADAR1 Capital Management first reported a position in SEPN in Q1 2025 and has held it in 6 quarters since. The position peaked at $32.3M in Q4 2025. 154 funds tracked by Wall St. Rank hold SEPN as of Q2 2026.

  • ADAR1 Capital Management held 940,747 shares of Septerna Inc worth $31.5M as of Q2 2026.
  • ADAR1 Capital Management sold 149,071 Septerna Inc shares in Q2 2026, an estimated $4.23M.
  • Septerna Inc made up 1.44% of ADAR1 Capital Management's portfolio in Q2 2026, its #11 holding.
  • ADAR1 Capital Management first reported a position in Septerna Inc in Q1 2025 and has held it in 6 quarters since.
  • ADAR1 Capital Management's Septerna Inc position peaked at $32.3M in Q4 2025.
  • 154 funds tracked by Wall St. Rank held Septerna Inc as of Q2 2026.

Based on ADAR1 Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.