MXCT · Maxcyte, Inc. · Shareholders & Ownership

$1.47 +0.00 (+0.24%)

Market Cap

$151.71M

103.21M

Volume · Oct 21 1.42M Avg daily vol (3M) 849.89K

Every disclosed holder of MXCT in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns MXCT

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	119	62,944,870	60.99%	Yes
Insiders (Forms 3, 4, 5)	13	2,354,075	2.28%	Yes
13D/G-only blocks	3	10,221,287	9.90%	Yes
Remaining	—	27,685,974	26.83%	Rest
Registered funds (N-PORT, not summed)	46	7,513,958	7.28%	No

Shares outstanding: 103,206,206, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of MXCT

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	Capricorn Fund Managers Ltd 13F CIK 1901361 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,200,000	7.95%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
2	Liontrust Investment Partners LLP 13D CIK 1544204 · Registered fund · Oct 14, 2026 Item 4 purpose: none of the classified purposes	5,194,322	5.03%	—	Oct 14, 2026
3	Vitruvian Partners LLP 13F CIK 1692590 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	5,043,356	4.89%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
4	Millennium Management LLC 13G CIK 1319244 · Unknown · Sep 30, 2024 Rule 13d-1(c), passive investor	4,192,865	4.06%	-1,556,150	Sep 30, 2024	Rule 13d-1(c), passive investor
5	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,031,284	3.91%	+49,468	Jun 30, 2026	carried, not yet filed for the newest quarter
6	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,694,049	3.58%	+5,918	Jun 30, 2026	carried, not yet filed for the newest quarter
6.1	Inception Portfolio Fund S000002825 · Registered fund · Jun 30, 2026 MORGAN STANLEY INSTITUTIONAL FUND INC, not summed	347,433	0.34%	0	Jun 30, 2026	MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
6.2	Vitality Portfolio Fund S000074797 · Registered fund · Mar 31, 2026 MORGAN STANLEY INSTITUTIONAL FUND INC, not summed	49,461	0.05%	—	Mar 31, 2026	MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
7	Mudita Advisors LLP 13F CIK 1907809 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,370,689	3.27%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
8	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,060,960	2.97%	-5,737,513	Jun 30, 2026	carried, not yet filed for the newest quarter
8.1	BlackRock, Inc. 13G CIK 2012383 · Holding company · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	1,402,591	1.36%	-5,594,606	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
8.2	iShares Core S&P Total U.S. Stock Market ETF Fund S000004317 · Registered fund · Jun 30, 2026 iShares Trust, not summed	164,501	0.16%	+3,808	Jun 30, 2026	iShares Trust, not summed
8.3	Diversified Equity Alpha Master Portfolio Fund S000004282 · Registered fund · Jun 30, 2026 Master Investment Portfolio, not summed	74,409	0.07%	-22,766	Jun 30, 2026	Master Investment Portfolio, not summed
9	Brooklands Fund Management Ltd 13F CIK 2036388 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,848,083	2.76%	+658,063	Jun 30, 2026	carried, not yet filed for the newest quarter
10	BNP PARIBAS ASSET MANAGEMENT Holding S.A. 13F CIK 1520354 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	2,773,554	2.69%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
11	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	2,742,125	2.66%	0	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
12	CADIAN CAPITAL MANAGEMENT, LP 13F CIK 1423686 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,201,166	2.13%	+478,224	Jun 30, 2026	carried, not yet filed for the newest quarter
13	Peapod Lane Capital LLC 13F CIK 2050979 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,125,752	2.06%	+793,559	Jun 30, 2026	carried, not yet filed for the newest quarter
14	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,910,800	1.85%	-82,400	Jun 30, 2026	carried, not yet filed for the newest quarter
15	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,882,776	1.82%	+661,594	Jun 30, 2026	carried, not yet filed for the newest quarter
16	JANE STREET GROUP, LLC 13F CIK 1595888 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,563,003	1.51%	+1,542,434	Jun 30, 2026	carried, not yet filed for the newest quarter
17	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,462,941	1.42%	+854,779	Jun 30, 2026	carried, not yet filed for the newest quarter
18	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,326,914	1.29%	-1,035,758	Jun 30, 2026	carried, not yet filed for the newest quarter
19	RBF Capital, LLC 13F CIK 1134621 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,322,443	1.28%	+1,322,443	Jun 30, 2026	carried, not yet filed for the newest quarter
20	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	1,241,943	1.20%	+82,924	Jun 30, 2026	carried, not yet filed for the newest quarter
20.1	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	109,491	0.11%	+72,619	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
21	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,204,921	1.17%	+1,161,862	Jun 30, 2026	carried, not yet filed for the newest quarter
22	NANO CAP NEW MILLENNIUM GROWTH FUND L P 13F CIK 1277890 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,200,000	1.16%	+200,000	Jun 30, 2026	carried, not yet filed for the newest quarter
23	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,161,395	1.13%	-4,313	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
24	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,014,778	0.98%	+915,866	Jun 30, 2026	carried, not yet filed for the newest quarter
25	Willis Investment Counsel 13F CIK 1310929 · Registered investment adviser · Sep 30, 2026	862,758	0.84%	0	Sep 30, 2026
26	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	856,318	0.83%	+523,230	Jun 30, 2026	carried, not yet filed for the newest quarter
27	RIVER & MERCANTILE ASSET MANAGEMENT LLP 13D CIK 1486180 · Registered fund · Jul 31, 2026	834,100	0.81%	-5,694,927	Jul 31, 2026
28	Stonepine Capital Management, LLC 13F CIK 1440771 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	751,606	0.73%	-253,067	Jun 30, 2026	carried, not yet filed for the newest quarter
29	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	653,203	0.63%	+9,997	Jun 30, 2026	carried, not yet filed for the newest quarter
30	George Kaiser Family Foundation 13F CIK 1265376 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	627,536	0.61%	+145,733	Jun 30, 2026	carried, not yet filed for the newest quarter
31	GSA CAPITAL PARTNERS LLP 13F CIK 1362033 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	555,944	0.54%	+539,456	Jun 30, 2026	carried, not yet filed for the newest quarter
32	VANGUARD RUSSELL 2000 INDEX FUND Fund S000030003 · Registered fund · May 31, 2026 VANGUARD SCOTTSDALE FUNDS, not summed	518,559	0.50%	+19,951	May 31, 2026	VANGUARD SCOTTSDALE FUNDS, not summed
33	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	516,750	0.50%	-1,676,720	Jun 30, 2026	carried, not yet filed for the newest quarter
34	Masoud Maher Insider CIK 1874571 · Mar 27, 2026 Director, President and CEO, issuer-wide	475,000	0.46%	+300,000	Mar 27, 2026	Director, President and CEO, issuer-wide
35	Man Group plc 13F CIK 1637460 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	448,958	0.44%	+448,958	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Erck Stanley C Insider CIK 1342826 · Jun 17, 2026 Director, issuer-wide	428,749	0.42%	+30,421	Jun 17, 2026	Director, issuer-wide
37	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	389,102	0.38%	+389,102	Jun 30, 2026	carried, not yet filed for the newest quarter
38	Apollo Management Holdings, L.P. 13F CIK 1449434 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	307,987	0.30%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
39	VANGUARD HEALTH CARE INDEX FUND Fund S000004450 · Registered fund · May 31, 2026 VANGUARD WORLD FUND, not summed	301,966	0.29%	-2,562	May 31, 2026	VANGUARD WORLD FUND, not summed
40	Point72 Asset Management, L.P. 13F CIK 1603466 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	299,853	0.29%	+299,853	Jun 30, 2026	carried, not yet filed for the newest quarter
41	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	284,273	0.28%	+13,219	Jun 30, 2026	carried, not yet filed for the newest quarter
42	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	270,740	0.26%	-231,906	Jun 30, 2026	carried, not yet filed for the newest quarter
43	JACOBS LEVY EQUITY MANAGEMENT, INC 13F CIK 884414 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	270,265	0.26%	-505,959	Jun 30, 2026	carried, not yet filed for the newest quarter
44	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	264,914	0.26%	-534,795	Jun 30, 2026	carried, not yet filed for the newest quarter
45	DOUGLAS RICHARD Insider CIK 1021015 · Jun 17, 2026 Director, issuer-wide	260,998	0.25%	+30,421	Jun 17, 2026	Director, issuer-wide
46	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	260,443	0.25%	-628,797	Jun 30, 2026	carried, not yet filed for the newest quarter
47	IEQ CAPITAL, LLC 13F CIK 1779789 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	237,962	0.23%	+122,762	Jun 30, 2026	carried, not yet filed for the newest quarter
48	EQ/Morgan Stanley Small Cap Growth Portfolio Fund S000044689 · Registered fund · Jun 30, 2026 EQ Advisors Trust, not summed	211,975	0.21%	0	Jun 30, 2026	EQ Advisors Trust, not summed
49	XTX Topco Ltd 13F CIK 1828301 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	206,590	0.20%	+130,537	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Johnston John Joseph Insider CIK 1874850 · Jun 17, 2026 Director, issuer-wide	201,581	0.20%	+30,421	Jun 17, 2026	Director, issuer-wide

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 165 holders

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Key facts CIK 1287098 CUSIP 57777K106 13F (30d) 11 filings 11 filers Visit website Investor relations