Rapid Micro Biosystems, Inc.

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TickerRPID

Sector · IndustryHealthcareMedical Devices

Activist

SecurityCommon Stock · US

CUSIP75340L104

CLASS A COM

Ask AIAsk AI about RPID

RPID institutional ownership changes in Q2 2026: 8 institutions opened or added positions, 21 trimmed or exited. RPID (Rapid Micro Biosystems, Inc.) is held by 21 institutional investors as of Q2 2026. Top institutional shareholders: Vanguard Capital Management LLC ($1.7M), Millennium Management LLC ($409,316), Geode Capital Management, LLC ($394,706). Institutions were selling, on balance.

21

Holders

$4.3M

Total Value

28% (29)

Consensus

8 buying - 21 selling

Fund holdings as of Jun 30, 2026

Smart Money Verdict

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Institutional (13F)••

Insider (Form 4)••

Activist (13D/13G)••

Congressional (STOCK Act)••

Holder Quality

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★★★★★

Elite

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★★★★

Strong

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★★★

Solid

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★★

Below

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★

Weak

Held by 21 funds

Who's Trading

Latest move

Source dates: Price Nov 6, 2026 · Insiders Jul 24, 2026 · Activists Aug 14, 2026 · Congress none

ActivistActARArmistice Capital, LLC7.3%Aug 14, 2026

ActivistActBLBain Capital Life Sciences Fund, L.P.16.8%Aug 14, 2026

InsiderInsKSKollender Richard SExercise 2K shJul 24, 2026

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Top Holders

FundsInsidersCongressActivists

Holdings (21)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
VAVanguard Capital Management LLC	Decreased	982,034(-0.1%)	$1.7M	0.0%	-69.52%	0
Millennium Management LLC	Decreased	236,599(-16.5%)	$409,316	0.0%	-72.64%	0
Geode Capital Management, LLC	Decreased	228,041(-7.7%)	$394,706	0.0%	-87.19%	0
Renaissance Technologies LLC	Increased	212,101(+67.5%)	$366,935	0.0%	-48.96%	35
BlackRock, Inc.	Increased	189,832(+20.7%)	$328,410	0.0%	-43.34%	19
VFVanguard Fiduciary Trust Co.	Increased	110,484(+0.7%)	$191,137	0.0%	-69.46%	16
Dimensional Fund Advisors LP	Increased	104,192(+19.0%)	$180,253	0.0%	-73.76%	18
State Street Corp.	Unchanged	93,874	$162,402	0.0%	-87.18%	0
XTX Topco Ltd	Increased	79,727(+30.6%)	$137,928	0.0%	-67.72%	28
SEI Investments Co.	Decreased	66,869(-76.5%)	$115,683	0.0%	-72.06%	0
Northern Trust Corp.	Decreased	42,106(-12.8%)	$72,843	0.0%	-87.43%	0
Morgan Stanley	Decreased	27,587(-5.5%)	$47,726	0.0%	-73.51%	0
Jane Street Group, LLC	Decreased	25,931(-80.5%)	$44,861	0.0%	-76.10%	0
HRT Financial LP	New	23,093	$39,000	0.0%	-60.00%	28
Citadel Advisors LLC	New	16,142	$27,926	0.0%	-60.00%	30
Osaic Holdings, Inc.	Increased	14,300(+2.1%)	$24,739	0.0%	-75.89%	13
American Century Companies Inc.	Decreased	11,638(-31.2%)	$20,134	0.0%	-76.10%	0
VGVanguard Global Advisers, LLC	Unchanged	11,630	$20,120	0.0%	-69.52%	0
UBS Group AG	Decreased	6,607(-41.3%)	$11,430	0.0%	-69.57%	0
Barclays plc	Decreased	337(-98.4%)	$583	0.0%	-76.14%	0

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RPIDRapid Micro Biosystems, Inc.

1M3M6M1Y3Y5Y

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Questions investors ask about RPID

Who owns RPID?

21 institutional investors held RPID on June 30, 2026, led by Vanguard Capital Management LLC ($1.7M), Millennium Management LLC ($409,316) and Geode Capital Management, LLC ($394,706).

How many hedge funds hold RPID?

21 institutional investors reported RPID in their 13F filings for the quarter ended June 30, 2026, $4.3M in all.

Are institutions buying or selling RPID?

Selling, on balance. In Q2 2026, 21 institutions trimmed or exited RPID and 8 institutions opened or added to positions.

High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer