Rapid Micro Biosystems RPID Institutional Ownership

NASDAQ RPID

$0.65 -0.02 (-2.99%)

At close: Nov 13, 2026 · 4:00 PM EST

Institutions by Trading Activity

34 Institutions

Increased 14 41.2%

Unchanged 8 23.5%

Reduced 12 35.3%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

39.53%

▲+0.43 pp QoQ

Shares Held by Institutions

17.97Mn

of 45.47Mn outstanding

▲+11.40% QoQ

Shares Outstanding

45.47Mn

27.50Mn 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

$11.68Mn

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 Nov 4, 2026

Rapid Micro Biosystems, Inc. (NASDAQ:RPID) appeared in the 13F filings of 34 institutional investors for the quarter ended June 30, 2026.

Together they owned 39.53% of the outstanding stock in Q2 2026, up from 39.09% a quarter earlier.
Total shares held in Rapid Micro Biosystems rose 11.40% versus Q1 2026, while the number of holders rose 25.93% versus Q2 2025.
Looking at the 34 holders of RPID individually, 14 added to their positions, 12 reduced their stakes and 8 left their positions unchanged.
Combined, institutional investors held 17.97Mn shares of RPID as of Q2 2026, up 1.84Mn from the prior quarter and up 2.25Mn 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 18.55% 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), Khazanah Nasional Berhad (566.9K 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) and Geode Capital Management, LLC (228.04K shares).

Form 13F Holdings

34 Institutional Holders

Report period 30 Jun, 2026

Total shares held 17.97Mn

Of outstanding 39.53%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Bain Capital Life Sciences Investors, LLC	0001703031	8,434,560	18.55%	0	0.00%	$14.59Mn
2	ARMISTICE CAPITAL, LLC	0001601086	3,328,000	7.32%	▲3,328,000	0.00%	$5.76Mn
3	ABG-WTT Global Life Science Capital Partners GP Ltd	0001832108	1,848,296	4.07%	0	0.00%	$3.20Mn
4	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	982,034	2.16%	▼460	-0.05%	$1.70Mn
5	KHAZANAH NASIONAL BERHAD	0001763068	566,905	1.25%	0	0.00%	$980.75K
6	Evernest Financial Advisors, LLC	0002009530	506,000	1.11%	▲73,490	+16.99%	$875.38K
7	ADVENT INTERNATIONAL, L.P.	0001034196	379,794	0.84%	▼172,583	-31.24%	$657.04K
8	ESSEX INVESTMENT MANAGEMENT CO LLC	0000201772	362,696	0.80%	▼521,235	-58.97%	$627.46K
9	MILLENNIUM MANAGEMENT LLC	0001273087	236,599	0.52%	▼46,681	-16.48%	$409.32K
10	GEODE CAPITAL MANAGEMENT, LLC	0001214717	228,041	0.50%	▼19,136	-7.74%	$394.71K
11	RENAISSANCE TECHNOLOGIES LLC	0001037389	212,101	0.47%	▲85,484	+67.51%	$366.94K
12	BlackRock, Inc.	0002012383	189,832	0.42%	▲32,600	+20.73%	$328.41K
13	VANGUARD FIDUCIARY TRUST CO	0000933478	110,484	0.24%	▲772	+0.70%	$191.14K
14	DIMENSIONAL FUND ADVISORS LP	0000354204	104,192	0.23%	▲16,603	+18.96%	$180.25K
15	State Street Corp	0000093751	93,874	0.21%	0	0.00%	$162.40K
16	XTX Topco Ltd	0001828301	79,727	0.18%	▲18,657	+30.55%	$137.93K
17	Sei Investments Co	0000350894	66,869	0.15%	▼217,947	-76.52%	$115.68K
18	Northern Trust Corp	0000073124	42,106	0.09%	▼6,173	-12.79%	$72.84K
19	ALGERT GLOBAL LLC	0001275218	38,307	0.08%	▲15,126	+65.25%	$66.27K
20	Morgan Stanley	0000895421	27,587	0.06%	▼1,620	-5.55%	$47.73K

Showing 1 to 20 of 34 holders