Jane Street
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Jane Street’s Sera Prognostics SERA Stock Holding History

Jane Street’s Portfolio SERA Stock Details SERA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-53,908
Closed -$109K – 12961
2026
Q1 		$109K Sell
53,908
-14,918
-22% -$38.4K ﹤0.01% 10596
2025
Q4 		$203K Buy
+68,826
New +$222K ﹤0.01% 9692
2024
Q4 		– Sell
-14,225
Closed -$111K – 10453
2024
Q3 		$111K Buy
14,225
+2,826
+25% +$20.5K ﹤0.01% 8953
2024
Q2 		$67.5K Sell
11,399
-113,552
-91% -$1.02M ﹤0.01% 8857
2024
Q1 		$1.14M Buy
124,951
+110,234
+749% +$874K ﹤0.01% 5171
2023
Q4 		$88K Buy
+14,717
New +$42.8K ﹤0.01% 8629
2023
Q2 		– Sell
-30,507
Closed -$117K – 9484
2023
Q1 		$117K Buy
+30,507
New +$80.1K ﹤0.01% 8149

Other funds holding SERA

BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
WCA
Whetstone Capital Advisors Shawnee Mission, Kansas $380M AUM 20.01% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
VC
Vivo Capital Palo Alto, California $1.1B AUM 799.93% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
CAPTRUST Financial Advisors
CAPTRUST Financial Advisors Raleigh, North Carolina $65.5B AUM 24.25% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AIC
AWM Investment Company New York $1.15B AUM 201.65% 1-Year Est. Return
Vanguard Fiduciary Trust
Vanguard Fiduciary Trust Malvern, Pennsylvania $454B AUM

Jane Street's SERA Position: Q2 2026 in Review

Jane Street sold out of Sera Prognostics (SERA) in Q2 2026, closing a stake of 53,908 shares — an estimated $109K sold.

Jane Street first reported a position in SERA in Q1 2023 and held it in 7 quarters. The position peaked at $1.14M in Q1 2024. 46 funds tracked by Wall St. Rank hold SERA as of Q2 2026.

  • Jane Street reported no remaining Sera Prognostics position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 53,908 Sera Prognostics shares in Q2 2026, an estimated $109K.
  • Jane Street first reported a position in Sera Prognostics in Q1 2023 and held it in 7 quarters.
  • Jane Street's Sera Prognostics position peaked at $1.14M in Q1 2024.
  • 46 funds tracked by Wall St. Rank held Sera Prognostics as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.