Citadel Advisors
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Citadel Advisors’s Rapid Micro Biosystems RPID Stock Holding History

Citadel Advisors’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
Q2 		$27.9K Buy
+16,142
New +$34K ﹤0.01% 13322
2026
Q1 		– Sell
-126,539
Closed -$367K – 14055
2025
Q4 		$367K Buy
+126,539
New +$439K ﹤0.01% 9721
2025
Q3 		– Sell
-20,762
Closed -$71.6K – 13900
2025
Q2 		$71.6K Buy
+20,762
New +$60.3K ﹤0.01% 11569
2025
Q1 		– Sell
-72,024
Closed -$64.8K – 15420
2024
Q4 		$64.8K Buy
+72,024
New +$72.5K ﹤0.01% 12073
2024
Q1 		– Sell
-24,135
Closed -$17.9K – 15337
2023
Q4 		$17.9K Buy
24,135
+7,494
+45% +$7.67K ﹤0.01% 12720
2023
Q3 		$18K Sell
16,641
-33,095
-67% -$32.9K ﹤0.01% 12701
2023
Q2 		$49.7K Buy
+49,736
New +$50.3K ﹤0.01% 11808
2023
Q1 		– Sell
-20,683
Closed -$23.4K – 15401
2022
Q4 		$23.4K Buy
+20,683
New +$50.1K ﹤0.01% 13017
2022
Q3 		– Sell
-29,713
Closed -$128K – 13471
2022
Q2 		$128K Buy
+29,713
New +$138K ﹤0.01% 11152
2021
Q4 		– Sell
-22,705
Closed -$419K – 14614
2021
Q3 		$419K Buy
+22,705
New +$469K ﹤0.01% 10305

Other funds holding RPID

BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.68B AUM 126.09% 1-Year Est. Return
AC
Armistice Capital New York $8.17B AUM 68.82% 1-Year Est. Return
AWGLSCP
ABG-WTT Global Life Science Capital Partners Central, Hong Kong, Hong Kong $8.55M AUM 12.76% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
EFA
Evernest Financial Advisors Carmel, Indiana $478M AUM 24% 1-Year Est. Return
AI
Advent International Boston, Massachusetts $17.7B AUM 5.23% 1-Year Est. Return
EIM
Essex Investment Management Boston, Massachusetts $763M AUM 108.51% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Citadel Advisors's RPID Position: Q2 2026 in Review

Citadel Advisors opened a new position in Rapid Micro Biosystems (RPID) in Q2 2026: 16,142 shares worth $27.9K. The stake represents ﹤0.01% of the portfolio and ranks #13322 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in RPID as recently as Q4 2025.

Citadel Advisors first reported a position in RPID in Q3 2021 and has held it in 10 quarters since. The position peaked at $419K in Q3 2021. 34 funds tracked by Wall St. Rank hold RPID as of Q2 2026.

  • Citadel Advisors held 16,142 shares of Rapid Micro Biosystems worth $27.9K as of Q2 2026.
  • Rapid Micro Biosystems was a new Citadel Advisors position in Q2 2026.
  • Rapid Micro Biosystems made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #13322 holding.
  • Citadel Advisors first reported a position in Rapid Micro Biosystems in Q3 2021 and has held it in 10 quarters since.
  • Citadel Advisors's Rapid Micro Biosystems position peaked at $419K in Q3 2021.
  • 34 funds tracked by Wall St. Rank held Rapid Micro Biosystems as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.