Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

MAXCYTE, INC.

CIK 0001287098MXCT· quarter ending 2026-06-30

Shares outstanding

103,206,206

as of 2026-08-07 · 10-Q cover page, filed 2026-08-13

Held by 13F filers

63,303,821

61.3% of shares outstanding

Holders

122

-9 vs 2026-03-31 · 26 new, 35 exited

Value

$78.0M

shares -3.2% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-08-13, as of 2026-08-07)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	MXCT · NASDAQ	103,206,206	63,303,821	61.3%	122	57777K106

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	57777K106	COM	122	63,303,821	103,206,206	61.3%	$78.0M	0 call / 1 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (122 of 122 · 57777K106)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	Capricorn Fund Managers Ltd	8,200,000	7.95%	$10.1M	—
2	Vitruvian Partners LLP	5,043,356	4.89%	$6.2M	—
3	VANGUARD CAPITAL MANAGEMENT LLC	4,031,284	3.91%	$5.0M	+49,468 (+1.2%)
4	MORGAN STANLEY	3,694,049	3.58%	$4.5M	+5,918 (+0.2%)
5	Mudita Advisors LLP	3,370,689	3.27%	$4.1M	—
6	BlackRock, Inc.	3,060,960	2.97%	$3.8M	-5,737,513 (-65.2%)
7	Brooklands Fund Management Ltd	2,848,083	2.76%	$3.7M	+658,063 (+30.0%)
8	BNP PARIBAS ASSET MANAGEMENT Holding S.A.	2,773,554	2.69%	$3.4M	—
9	CADIAN CAPITAL MANAGEMENT, LP	2,201,166	2.13%	$2.7M	+478,224 (+27.8%)
10	Peapod Lane Capital LLC	2,125,752	2.06%	$2.6M	+793,559 (+59.6%)
11	RENAISSANCE TECHNOLOGIES LLC	1,910,800	1.85%	$2.4M	-82,400 (-4.1%)
12	AQR CAPITAL MANAGEMENT LLC	1,882,776	1.82%	$2.3M	+661,594 (+54.2%)
13	JANE STREET GROUP, LLC	1,563,003	1.51%	$1.9M	+1,542,434 (+7498.8%)
14	TWO SIGMA INVESTMENTS, LP	1,462,941	1.42%	$1.8M	+854,779 (+140.6%)
15	GEODE CAPITAL MANAGEMENT, LLC	1,326,914	1.29%	$1.6M	-1,035,758 (-43.8%)
16	RBF Capital, LLC	1,322,443	1.28%	$1.6M	NEW
17	GOLDMAN SACHS GROUP INC	1,241,943	1.20%	$1.5M	+82,924 (+7.2%)
18	MILLENNIUM MANAGEMENT LLC	1,204,921	1.17%	$1.5M	+1,161,862 (+2698.3%)
19	NANO CAP NEW MILLENNIUM GROWTH FUND L P	1,200,000	1.16%	$1.5M	+200,000 (+20.0%)
20	MARSHALL WACE, LLP	1,014,778	0.98%	$1.2M	+915,866 (+925.9%)
21	Willis Investment Counsel	862,758	0.84%	$1.1M	—
22	CITADEL ADVISORS LLC	856,318	0.83%	$1.1M	+523,230 (+157.1%)
23	Stonepine Capital Management, LLC	751,606	0.73%	$924K	-253,067 (-25.2%)
24	VANGUARD FIDUCIARY TRUST CO	653,203	0.63%	$803K	+9,997 (+1.6%)
25	George Kaiser Family Foundation	627,536	0.61%	$772K	+145,733 (+30.2%)
26	GSA CAPITAL PARTNERS LLP	555,944	0.54%	$684K	+539,456 (+3271.8%)
27	STATE STREET CORP	516,750	0.50%	$636K	-1,676,720 (-76.4%)
28	Man Group plc	448,958	0.44%	$552K	NEW
29	Qube Research & Technologies Ltd	389,102	0.38%	$479K	NEW
30	Apollo Management Holdings, L.P.	307,987	0.30%	$379K	—
31	Point72 Asset Management, L.P.	299,853	0.29%	$369K	NEW
32	Marquette Asset Management, LLC	285,507	0.28%	$351K	NEW
33	UBS Group AG	284,273	0.28%	$350K	+13,219 (+4.9%)
34	DIMENSIONAL FUND ADVISORS LP	270,740	0.26%	$333K	-231,906 (-46.1%)
35	JACOBS LEVY EQUITY MANAGEMENT, INC	270,265	0.26%	$332K	-505,959 (-65.2%)
36	NORTHERN TRUST CORP	264,914	0.26%	$326K	-534,795 (-66.9%)
37	VANGUARD PORTFOLIO MANAGEMENT LLC	260,443	0.25%	$320K	-628,797 (-70.7%)
38	IEQ CAPITAL, LLC	237,962	0.23%	$293K	+122,762 (+106.6%)
39	XTX Topco Ltd	206,590	0.20%	$254K	+130,537 (+171.6%)
40	Rathbones Group PLC	200,841	0.19%	$247K	-245,915 (-55.0%)
41	FMR LLC	180,338	0.17%	$222K	-9,788 (-5.1%)
42	Aster Capital Management (DIFC) Ltd	163,270	0.16%	$201K	NEW
43	SUSQUEHANNA INTERNATIONAL GROUP, LLP	156,992	0.15%	$193K	+115,408 (+277.5%)
44	HSBC HOLDINGS PLC	155,801	0.15%	$189K	-94,371 (-37.7%)
45	Callan Family Office, LLC	154,311	0.15%	$190K	+41,322 (+36.6%)
46	BARCLAYS PLC	149,013	0.14%	$183K	-14,049 (-8.6%)
47	HRT FINANCIAL LP	121,204	0.12%	$149K	+92,404 (+320.8%)
48	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	117,192	0.11%	$144K	-211,459 (-64.3%)
49	Quadrature Capital Ltd	105,516	0.10%	$130K	NEW
50	BANK OF AMERICA CORP /DE/	100,716	0.10%	$124K	-26,542 (-20.9%)
51	J. Goldman & Co LP	99,728	0.10%	$123K	NEW
52	Cerity Partners LLC	97,858	0.09%	$120K	+52,196 (+114.3%)
53	Mariner, LLC	96,672	0.09%	$119K	+53,059 (+121.7%)
54	PANAGORA ASSET MANAGEMENT INC	89,270	0.09%	$110K	NEW
55	CABOT WEALTH MANAGEMENT INC	88,623	0.09%	$109K	—
56	Bank of New York Mellon Corp	80,340	0.08%	$99K	-323,597 (-80.1%)
57	AMERIPRISE FINANCIAL INC	79,472	0.08%	$98K	-64,615 (-44.8%)
58	TUDOR INVESTMENT CORP ET AL	78,313	0.08%	$96K	NEW
59	Jain Global LLC	71,895	0.07%	$88K	+54,372 (+310.3%)
60	Vanguard Personalized Indexing Management, LLC	62,992	0.06%	$77K	+44,199 (+235.2%)
61	Catalyst Funds Management Pty Ltd	61,700	0.06%	$76K	NEW
62	LUMINUS MANAGEMENT LLC	60,604	0.06%	$75K	-1,089,396 (-94.7%)
63	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC	57,390	0.06%	$76K	+30,965 (+117.2%)
64	Waverly Advisors, LLC	54,014	0.05%	$66K	+1,994 (+3.8%)
65	Tower Research Capital LLC (TRC)	53,931	0.05%	$66K	+27,994 (+107.9%)
66	RHUMBLINE ADVISERS	47,973	0.05%	$59K	-74,321 (-60.8%)
67	MERCER GLOBAL ADVISORS INC /ADV	47,756	0.05%	$59K	+32,144 (+205.9%)
68	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	43,800	0.04%	$54K	-22,700 (-34.1%)
69	JMN Financial LLC	41,839	0.04%	$51K	NEW
70	Vanguard Global Advisers, LLC	41,000	0.04%	$50K	—
71	CANADA PENSION PLAN INVESTMENT BOARD	35,700	0.03%	$44K	NEW
72	Creative Planning	32,944	0.03%	$41K	+21,973 (+200.3%)
73	Arax Advisory Partners	31,378	0.03%	$39K	+31,151 (+13722.9%)
74	CAPTRUST FINANCIAL ADVISORS	31,344	0.03%	$39K	+19,875 (+173.3%)
75	KWMG, LLC	25,833	0.03%	$32K	—
76	BRIGHTON JONES LLC	24,157	0.02%	$30K	+13,133 (+119.1%)
77	Y-Intercept (Hong Kong) Ltd	23,436	0.02%	$29K	NEW
78	PNC Financial Services Group, Inc.	23,010	0.02%	$28K	+5,699 (+32.9%)
79	Jump Financial, LLC	22,200	0.02%	$27K	NEW
80	STIFEL FINANCIAL CORP	20,628	0.02%	$25K	+7,000 (+51.4%)
81	R Squared Ltd	19,780	0.02%	$24K	+7,720 (+64.0%)
82	BNP PARIBAS FINANCIAL MARKETS	18,076	0.02%	$22K	-4,009 (-18.2%)
83	Granite Investment Partners, LLC	17,463	0.02%	$21K	—
84	Focus Partners Wealth	16,916	0.02%	$21K	+5,098 (+43.1%)
85	Jefferies Financial Group Inc.	15,972	0.02%	$20K	+5,972 (+59.7%)
86	Spark Investment Management LLC	15,900	0.02%	$20K	NEW
87	Pallas Capital Advisors LLC	15,629	0.02%	$19K	NEW
88	Squarepoint Ops LLC	14,844	0.01%	$18K	NEW
89	Merit Financial Group, LLC	14,654	0.01%	$18K	NEW
90	Balyasny Asset Management L.P.	13,548	0.01%	$17K	NEW
91	BLAIR WILLIAM & CO/IL	12,069	0.01%	$15K	-1,447 (-10.7%)
92	COLDSTREAM CAPITAL MANAGEMENT INC	11,950	0.01%	$15K	NEW
93	VICTORY CAPITAL MANAGEMENT INC	11,457	0.01%	$14K	+174 (+1.5%)
94	ROYAL BANK OF CANADA	8,184	0.01%	$10K	+6,885 (+530.0%)
95	GAMMA Investing LLC	5,702	0.01%	$7K	+269 (+5.0%)
96	Allworth Financial LP	4,558	0.00%	$6K	+3,235 (+244.5%)
97	TrinityBridge Ltd	4,000	0.00%	$5K	—
98	Russell Investments Group, Ltd.	3,971	0.00%	$5K	-4,405 (-52.6%)
99	EverSource Wealth Advisors, LLC	3,116	0.00%	$4K	+1,721 (+123.4%)
100	Essential Partners LLC	2,115	0.00%	$3K	-1,212 (-36.4%)
101	Bare Financial Services, Inc	1,599	0.00%	$2K	NEW
102	ROTHSCHILD INVESTMENT LLC	1,588	0.00%	$2K	+779 (+96.3%)
103	JPMORGAN CHASE & CO	1,575	0.00%	$2K	-39,517 (-96.2%)
104	Capital Analysts, LLC	1,266	0.00%	$2K	—
105	Farther Finance Advisors, LLC	1,263	0.00%	$2K	+753 (+147.6%)
106	EFG International AG	1,261	0.00%	$2K	—
107	True Wealth Design, LLC	787	0.00%	$969	+648 (+466.2%)
108	NISA INVESTMENT ADVISORS, LLC	724	0.00%	$891	+96 (+15.3%)
109	IFP Advisors, Inc	660	0.00%	$812	+54 (+8.9%)
110	SIMPLEX TRADING, LLC	476	0.00%	$585	-791 (-62.4%)
111	OSAIC HOLDINGS, INC.	470	0.00%	$578	—
112	CITIGROUP INC	454	0.00%	$559	-4,693 (-91.2%)
113	Fortitude Family Office, LLC	212	0.00%	$261	NEW
114	Transamerica Financial Advisors, LLC	187	0.00%	$230	—
115	SJS Investment Consulting Inc.	126	0.00%	$155	+94 (+293.8%)
116	Wealth Enhancement Trust Services, Inc.	49	0.00%	$60	NEW
117	SBI Securities Co., Ltd.	40	0.00%	$49	—
118	JPL Wealth Management, LLC	26	0.00%	$32	NEW
119	Zurcher Kantonalbank (Zurich Cantonalbank)	14	0.00%	$17	—
120	Clearstead Advisors, LLC	13	0.00%	$16	NEW
121	Caitong International Asset Management Co., Ltd	9	0.00%	$11	+8 (+800.0%)
122	Optiver Holding B.V.	3	0.00%	$4	-1,600 (-99.8%)

Exited since 2026-03-31 (35 filers; largest 25 shown)

FRED ALGER MANAGEMENT, LLC	−386,667
Mink Brook Asset Management LLC	−284,024
VOYA INVESTMENT MANAGEMENT LLC	−256,120
Nuveen, LLC	−218,497
D. E. Shaw & Co., Inc.	−200,505
STRS OHIO	−129,500
Invesco Ltd.	−119,227
ALLIANCEBERNSTEIN L.P.	−100,100
DEUTSCHE BANK AG\	−83,853
NINE MASTS CAPITAL Ltd	−63,591
LOS ANGELES CAPITAL MANAGEMENT LLC	−63,330
PRICE T ROWE ASSOCIATES INC /MD/	−51,537
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	−48,084
CWM, LLC	−38,500
WELLS FARGO & COMPANY/MN	−38,214
Police & Firemen's Retirement System of New Jersey	−33,868
MANUFACTURERS LIFE INSURANCE COMPANY, THE	−33,204
INTECH INVESTMENT MANAGEMENT LLC	−27,027
NEW YORK STATE COMMON RETIREMENT FUND	−21,837
Virtu Financial LLC	−17,404
PRUDENTIAL FINANCIAL INC	−15,285
ProShare Advisors LLC	−14,660
Scientech Research LLC	−12,580
Abel Hall, LLC	−12,110
Chicago Partners Investment Group LLC	−11,195

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
RIVER GLOBAL INVESTORS LLP	SCHEDULE 13D	2026-08-04	2026-07-31	834,100	0.8%
BlackRock, Inc.	SCHEDULE 13G/A	2026-07-29	2026-06-30	1,402,591	1.3%
Mirabella Financial Services LLP	SCHEDULE 13G/A	2026-04-10	2026-03-31	0	0%
The Vanguard Group	SCHEDULE 13G/A	2026-03-27	2026-03-13	0	0%
Cadian Capital Management GP, LLC	SCHEDULE 13G/A	2026-02-17	2025-12-31	3,683,052	3.5%
Cadian Capital Management, LP	SCHEDULE 13G/A	2026-02-17	2025-12-31	3,683,052	3.5%
ERIC BANNASCH	SCHEDULE 13G/A	2026-02-17	2025-12-31	3,683,052	3.5%
Capricorn Fund Managers Ltd	SCHEDULE 13G	2026-02-05	2026-01-30	8,200,000	7.7%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.