American Century Companies
SEPN

American Century Companies’s Septerna Inc SEPN Stock Holding History

American Century Companies’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
Q1 		$1.47M Buy
61,290
+10,601
+21% +$279K ﹤0.01% 2217
2025
Q4 		$1.41M Buy
50,689
+25,406
+100% +$607K ﹤0.01% 2216
2025
Q3 		$476K Buy
+25,283
New +$332K ﹤0.01% 2520

Other funds holding SEPN

RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
TGV
TRV GP V Boston, Massachusetts $401M AUM 284.76% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
TGV
TRV GP VI Boston, Massachusetts $136M AUM 328.39% 1-Year Est. Return
SB
Samsara BioCapital Palo Alto, California $1.03B AUM 214.94% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return

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

American Century Companies increased its Septerna Inc (SEPN) stake by 21% in Q1 2026, buying an estimated $279K and bringing the position to 61,290 shares worth $1.47M. The position accounts for ﹤0.01% of the portfolio, ranked #2217.

American Century Companies first reported a position in SEPN in Q3 2025 and has held it in 3 quarters since. 124 funds tracked by Wall St. Rank hold SEPN as of Q1 2026.

  • American Century Companies held 61,290 shares of Septerna Inc worth $1.47M as of Q1 2026.
  • American Century Companies bought 10,601 Septerna Inc shares in Q1 2026, an estimated $279K.
  • Septerna Inc made up ﹤0.01% of American Century Companies's portfolio in Q1 2026, its #2217 holding.
  • American Century Companies first reported a position in Septerna Inc in Q3 2025 and has held it in 3 quarters since.
  • 124 funds tracked by Wall St. Rank held Septerna Inc as of Q1 2026.

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