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
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 $17.4B AUM 131.5% 1-Year Est. Return
WCA
Whetstone Capital Advisors Shawnee Mission, Kansas $288M AUM 44.06% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $61.9B AUM 29.81% 1-Year Est. Return
PR
PSP Research Newtown Square, Pennsylvania $188M AUM
VC
Vivo Capital Palo Alto, California $1.2B AUM 911.44% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
CAPTRUST Financial Advisors
CAPTRUST Financial Advisors Raleigh, North Carolina $57.3B AUM 18.32% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
SMH
Sanders Morris Harris Houston, Texas $172M AUM 22.54% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Jane Street's SERA Position: Q1 2026 in Review

Jane Street reduced its Sera Prognostics (SERA) stake by 22% in Q1 2026, selling an estimated $38.4K and leaving 53,908 shares worth $109K. The position accounts for ﹤0.01% of the portfolio, ranked #10596.

Jane Street first reported a position in SERA in Q1 2023 and has held it in 7 quarters since. The position peaked at $1.14M in Q1 2024. 56 funds tracked by Wall St. Rank hold SERA as of Q1 2026.

  • Jane Street held 53,908 shares of Sera Prognostics worth $109K as of Q1 2026.
  • Jane Street sold 14,918 Sera Prognostics shares in Q1 2026, an estimated $38.4K.
  • Sera Prognostics made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #10596 holding.
  • Jane Street first reported a position in Sera Prognostics in Q1 2023 and has held it in 7 quarters since.
  • Jane Street's Sera Prognostics position peaked at $1.14M in Q1 2024.
  • 56 funds tracked by Wall St. Rank held Sera Prognostics as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.