Rapid Micro Biosystems RPID Institutional Ownership

NASDAQ RPID

$0.77 0.00 (-0.25%)

At close: Oct 20, 2026 · 4:00 PM EDT

Institutions by Trading Activity

33 Institutions

Increased 14 42.4%

Unchanged 7 21.2%

Reduced 12 36.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

34.83%

▲+0.82 pp QoQ

Shares Held by Institutions

17.40Mn

of 49.97Mn outstanding

▲+11.81% QoQ

Shares Outstanding

49.97Mn

32.56Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-12 vs prior quarter

Net Shares Added (QoQ)

+1.84Mn

accumulated since last quarter

Value of Holdings

$14.79Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 10, 2026

Rapid Micro Biosystems, Inc. (NASDAQ:RPID) appeared in the 13F filings of 33 institutional investors for the quarter ended June 30, 2026.

Together they owned 34.83% of the outstanding stock in Q2 2026, up from 34.01% a quarter earlier.
Total shares held in Rapid Micro Biosystems rose 11.81% versus Q1 2026, while the number of holders rose 26.92% versus Q2 2025.
Looking at the 33 holders of RPID individually, 14 added to their positions, 12 reduced their stakes and 7 left their positions unchanged.
Combined, institutional investors held 17.4Mn shares of RPID as of Q2 2026, up 1.84Mn from the prior quarter and up 2.33Mn from a year earlier.
As of June 30, 2026, the biggest holder of Rapid Micro Biosystems was Bain Capital Life Sciences Investors, LLC with 8.43Mn shares, or 16.88% of shares outstanding.
Among existing holders, the largest additions to Rapid Micro Biosystems in Q2 2026 came from Renaissance Technologies LLC (+85.48K shares), Evernest Financial Advisors, LLC (+73.49K shares), BlackRock, Inc. (+32.6K shares), XTX Topco Ltd (+18.66K shares) and Dimensional Fund Advisors LP (+16.6K shares).
Among holders that kept a stake in Rapid Micro Biosystems, the biggest sellers in Q2 2026 were Essex Investment Management Co LLC (-521.24K shares), SEI Investments Co (-217.95K shares), Advent International, L.P. (-172.58K shares), Jane Street Group, LLC (-106.99K shares) and Millennium Management LLC (-46.68K shares).
According to Business Quant data, the leading holders of RPID for Q2 2026 were Bain Capital Life Sciences Investors, LLC (8.43Mn shares), Armistice Capital, LLC (3.33Mn shares), ABG-WTT Global Life Science Capital Partners GP Ltd (1.85Mn shares), Vanguard Capital Management LLC (982.03K shares), Evernest Financial Advisors, LLC (506K shares), Advent International, L.P. (379.79K shares), Essex Investment Management Co LLC (362.7K shares), Millennium Management LLC (236.6K shares), Geode Capital Management, LLC (228.04K shares) and Renaissance Technologies LLC (212.1K shares).

Form 13F Holdings

33 Institutional Holders

Report period 30 Jun, 2026

Total shares held 17.40Mn

Of outstanding 34.83%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Bain Capital Life Sciences Investors, LLC	0001703031	8,434,560	16.88%	0	0.00%	$14.59Mn
2	ARMISTICE CAPITAL, LLC	0001601086	3,328,000	6.66%	▲3,328,000	0.00%	$5.76Mn
3	ABG-WTT Global Life Science Capital Partners GP Ltd	0001832108	1,848,296	3.70%	0	0.00%	$3.20Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	982,034	1.97%	▼460	-0.05%	$1.70Mn
5	Evernest Financial Advisors, LLC	0002009530	506,000	1.01%	▲73,490	+16.99%	$875.38K
6	ADVENT INTERNATIONAL, L.P.	0001034196	379,794	0.76%	▼172,583	-31.24%	$657.04K
7	ESSEX INVESTMENT MANAGEMENT CO LLC	0000201772	362,696	0.73%	▼521,235	-58.97%	$627.46K
8	MILLENNIUM MANAGEMENT LLC	0001273087	236,599	0.47%	▼46,681	-16.48%	$409.32K
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	228,041	0.46%	▼19,136	-7.74%	$394.71K
10	RENAISSANCE TECHNOLOGIES LLC	0001037389	212,101	0.42%	▲85,484	+67.51%	$366.94K
11	BlackRock, Inc.	0002012383	189,832	0.38%	▲32,600	+20.73%	$328.41K
12	VANGUARD FIDUCIARY TRUST CO	0000933478	110,484	0.22%	▲772	+0.70%	$191.14K
13	DIMENSIONAL FUND ADVISORS LP	0000354204	104,192	0.21%	▲16,603	+18.96%	$180.25K
14	State Street Corp	0000093751	93,874	0.19%	0	0.00%	$162.40K
15	XTX Topco Ltd	0001828301	79,727	0.16%	▲18,657	+30.55%	$137.93K
16	Sei Investments Co	0000350894	66,869	0.13%	▼217,947	-76.52%	$115.68K
17	Northern Trust Corp	0000073124	42,106	0.08%	▼6,173	-12.79%	$72.84K
18	ALGERT GLOBAL LLC	0001275218	38,307	0.08%	▲15,126	+65.25%	$66.27K
19	Morgan Stanley	0000895421	27,587	0.06%	▼1,620	-5.55%	$47.73K
20	JANE STREET GROUP, LLC	0001595888	25,931	0.05%	▼106,994	-80.49%	$44.86K

Showing 1 to 20 of 33 holders