BlackRock
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BlackRock’s Rapid Micro Biosystems RPID Stock Holding History

BlackRock’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 		$357K Buy
157,232
+566
+0.4% +$2.07K ﹤0.01% 4613
2025
Q4 		$454K Sell
156,666
-327,205
-68% -$1.14M ﹤0.01% 4506
2025
Q3 		$1.62M Buy
483,871
+7,054
+1% +$22.3K ﹤0.01% 4159
2025
Q2 		$1.65M Sell
476,817
-165,284
-26% -$480K ﹤0.01% 4118
2025
Q1 		$1.7M Buy
642,101
+69,222
+12% +$158K ﹤0.01% 4044
2024
Q4 		$516K Hold
572,879
– – ﹤0.01% 4406
2024
Q3 		$510K Sell
572,879
-75,640
-12% -$58.8K ﹤0.01% 4321
2024
Q2 		$428K Sell
648,519
-371,209
-36% -$317K ﹤0.01% 4383
2024
Q1 		$989K Sell
1,019,728
-1,729
-0.2% -$1.68K ﹤0.01% 4199
2023
Q4 		$756K Sell
1,021,457
-661
-0.1% -$676 ﹤0.01% 4328
2023
Q3 		$1.1M Sell
1,022,118
-12,743
-1% -$12.7K ﹤0.01% 4212
2023
Q2 		$1.03M Buy
1,034,861
+7,801
+0.8% +$7.89K ﹤0.01% 4288
2023
Q1 		$1.35M Buy
1,027,060
+1,638
+0.2% +$2.13K ﹤0.01% 4224
2022
Q4 		$1.16M Sell
1,025,422
-13,503
-1% -$32.7K ﹤0.01% 4361
2022
Q3 		$3.36M Sell
1,038,925
-5,580
-0.5% -$21.7K ﹤0.01% 3935
2022
Q2 		$4.49M Sell
1,044,505
-592,034
-36% -$2.76M ﹤0.01% 3868
2022
Q1 		$11.1M Buy
1,636,539
+245,098
+18% +$1.8M ﹤0.01% 3520
2021
Q4 		$14.8M Buy
1,391,441
+31,414
+2% +$490K ﹤0.01% 3447
2021
Q3 		$25.1M Buy
+1,360,027
New +$28.1M ﹤0.01% 3134

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

BlackRock's RPID Position: Q1 2026 in Review

BlackRock increased its Rapid Micro Biosystems (RPID) stake by 0.36% in Q1 2026, buying an estimated $2.07K and bringing the position to 157,232 shares worth $357K. The position accounts for ﹤0.01% of the portfolio, ranked #4613.

BlackRock first reported a position in RPID in Q3 2021 and has held it in 19 quarters since. The position peaked at $25.1M in Q3 2021. 46 funds tracked by Wall St. Rank hold RPID as of Q1 2026.

  • BlackRock held 157,232 shares of Rapid Micro Biosystems worth $357K as of Q1 2026.
  • BlackRock bought 566 Rapid Micro Biosystems shares in Q1 2026, an estimated $2.07K.
  • Rapid Micro Biosystems made up ﹤0.01% of BlackRock's portfolio in Q1 2026, its #4613 holding.
  • BlackRock first reported a position in Rapid Micro Biosystems in Q3 2021 and has held it in 19 quarters since.
  • BlackRock's Rapid Micro Biosystems position peaked at $25.1M in Q3 2021.
  • 46 funds tracked by Wall St. Rank held Rapid Micro Biosystems as of Q1 2026.

Based on BlackRock's 13F filing for Q1 2026, filed 13 May 2026.