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Essex Investment Management’s Rapid Micro Biosystems RPID Stock Holding History

Essex Investment Management’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 		$2.01M Buy
883,931
+821,605
+1,318% +$3.01M 0.32% 111
2025
Q4 		$181K Hold
62,326
– – 0.03% 211
2025
Q3 		$208K Hold
62,326
– – 0.03% 203
2025
Q2 		$215K Sell
62,326
-731
-1% -$2.12K 0.04% 194
2025
Q1 		$166K Buy
+63,057
New +$144K 0.03% 194

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
AI
Advent International Boston, Massachusetts $4.24B AUM 4.24% 1-Year Est. Return
EFA
Evernest Financial Advisors Carmel, Indiana $478M AUM 24% 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 $1.21B AUM 82.36% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

Essex Investment Management's RPID Position: Q1 2026 in Review

Essex Investment Management increased its Rapid Micro Biosystems (RPID) stake by 1,318% in Q1 2026, buying an estimated $3.01M and bringing the position to 883,931 shares worth $2.01M. The position accounts for 0.32% of the portfolio, ranked #111.

Essex Investment Management first reported a position in RPID in Q1 2025 and has held it in 5 quarters since. 46 funds tracked by Wall St. Rank hold RPID as of Q1 2026.

  • Essex Investment Management held 883,931 shares of Rapid Micro Biosystems worth $2.01M as of Q1 2026.
  • Essex Investment Management bought 821,605 Rapid Micro Biosystems shares in Q1 2026, an estimated $3.01M.
  • Rapid Micro Biosystems made up 0.32% of Essex Investment Management's portfolio in Q1 2026, its #111 holding.
  • Essex Investment Management first reported a position in Rapid Micro Biosystems in Q1 2025 and has held it in 5 quarters since.
  • 46 funds tracked by Wall St. Rank held Rapid Micro Biosystems as of Q1 2026.

Based on Essex Investment Management's 13F filing for Q1 2026, filed 11 May 2026.