Jane Street
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Jane Street’s Rapid Micro Biosystems RPID Stock Holding History

Jane Street’s Portfolio RPID Stock Details RPID Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$302K Buy
132,925
+27,624
+26% +$101K ﹤0.01% 9227
2025
Q4 		$305K Buy
105,301
+67,161
+176% +$233K ﹤0.01% 8807
2025
Q3 		$127K Buy
+38,140
New +$121K ﹤0.01% 10003

Other funds holding RPID

BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
AWGLSCP
ABG-WTT Global Life Science Capital Partners Central, Hong Kong, Hong Kong $12.3M AUM 3.13% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
EIM
Essex Investment Management Boston, Massachusetts $632M AUM 95.36% 1-Year Est. Return
AI
Advent International Boston, Massachusetts $4.24B AUM 4.24% 1-Year Est. Return
EFA
Evernest Financial Advisors Carmel, Indiana $481M AUM 19.97% 1-Year Est. Return
SEI Investments
SEI Investments Oaks, Pennsylvania $108B AUM 26.14% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
LCM
Legato Capital Management San Francisco, California $1.1B AUM 61.65% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Jane Street's RPID Position: Q1 2026 in Review

Jane Street increased its Rapid Micro Biosystems (RPID) stake by 26% in Q1 2026, buying an estimated $101K and bringing the position to 132,925 shares worth $302K. The position accounts for ﹤0.01% of the portfolio, ranked #9227.

Jane Street first reported a position in RPID in Q3 2025 and has held it in 3 quarters since. The position peaked at $305K in Q4 2025. 46 funds tracked by Wall St. Rank hold RPID as of Q1 2026.

  • Jane Street held 132,925 shares of Rapid Micro Biosystems worth $302K as of Q1 2026.
  • Jane Street bought 27,624 Rapid Micro Biosystems shares in Q1 2026, an estimated $101K.
  • Rapid Micro Biosystems made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #9227 holding.
  • Jane Street first reported a position in Rapid Micro Biosystems in Q3 2025 and has held it in 3 quarters since.
  • Jane Street's Rapid Micro Biosystems position peaked at $305K in Q4 2025.
  • 46 funds tracked by Wall St. Rank held Rapid Micro Biosystems as of Q1 2026.

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