Maxcyte, Inc.: which funds bought and sold

Institutions that bought and sold Maxcyte shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 78 institutions that filed 13F reports for both quarters added to or opened positions in Maxcyte, and 61 cut or closed them. Together they sold a net 2.1M shares, −3.2% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 4.8M shares (+60.5%); index fund managers were net sellers of 9.8M shares (−48.7%). 27 opened a new position and 33 sold out entirely.

Bought, Q2 2026 78 institutions, 27 of them new holders Sold, Q2 2026 61 institutions, 33 of them sold out

Net change, all compared −2.1M shares (−3.2%)

Net change, active managers +4.8M shares (+60.5%), 17 bought, 11 sold

Buyers versus sellers

institutions compared, 156

78 bought 17 61 sold

Active managers and hedge funds 17 bought · 11 sold · +4.8M

Index fund managers 3 bought · 8 sold · −9.8M

Other institutions 58 bought · 42 sold · +3.0M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Jane Street Group, LLC	+1.5M +7498.8%	1.6M	$1.9M
Rbf Capital, LLC	+1.3M New position	1.3M	$1.6M
Millennium Management LLC Hedge fund	+1.2M +2698.3%	1.2M	$1.5M
Marshall Wace, LLP Hedge fund	+916K +925.9%	1.0M	$1.2M
Two Sigma Investments, LP Hedge fund	+855K +140.6%	1.5M	$1.8M
Peapod Lane Capital LLC	+794K +59.6%	2.1M	$2.6M
AQR Capital Management LLC Hedge fund	+662K +54.2%	1.9M	$2.3M
Brooklands Fund Management Ltd	+658K +30.0%	2.8M	$3.7M
Gsa Capital Partners LLP	+539K +3271.8%	556K	$684,000
Citadel Advisors LLC Hedge fund	+523K +157.1%	856K	$1.1M
Cadian Capital Management, LP Hedge fund	+478K +27.8%	2.2M	$2.7M
Man Group PLC Hedge fund	+449K New position	449K	$552,218
Qube Research & Technologies Ltd Hedge fund	+389K New position	389K	$478,595
Point72 Asset Management, L.P. Hedge fund	+300K New position	300K	$368,819
Marquette Asset Management, LLC	+286K New position	286K	$351,174
Nano Cap New Millennium Growth Fund L P	+200K +20.0%	1.2M	$1.5M
Aster Capital Management (Difc) Ltd	+163K New position	163K	$200,822
George Kaiser Family Foundation	+146K +30.2%	628K	$771,869
Xtx Topco Ltd	+131K +171.6%	207K	$254,106
Ieq Capital, LLC	+123K +106.6%	238K	$292,694

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	+1.2M +2698.3%	1.2M	$1.5M
Marshall Wace, LLP Hedge fund	+916K +925.9%	1.0M	$1.2M
Two Sigma Investments, LP Hedge fund	+855K +140.6%	1.5M	$1.8M
AQR Capital Management LLC Hedge fund	+662K +54.2%	1.9M	$2.3M
Citadel Advisors LLC Hedge fund	+523K +157.1%	856K	$1.1M
Cadian Capital Management, LP Hedge fund	+478K +27.8%	2.2M	$2.7M
Man Group PLC Hedge fund	+449K New position	449K	$552,218
Qube Research & Technologies Ltd Hedge fund	+389K New position	389K	$478,595
Point72 Asset Management, L.P. Hedge fund	+300K New position	300K	$368,819
Quadrature Capital Ltd Hedge fund	+106K New position	106K	$129,785

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Blackrock, Inc. Index funds	−5.7M −65.2%	3.1M	$3.8M
State Street Corp Index funds	−1.7M −76.4%	517K	$635,603
Luminus Management LLC	−1.1M −94.7%	61K	$74,543
Geode Capital Management, LLC Index funds	−1.0M −43.8%	1.3M	$1.6M
Vanguard Portfolio Management LLC Index funds	−629K −70.7%	260K	$320,345
Northern Trust Corp Index funds	−535K −66.9%	265K	$325,844
Jacobs Levy Equity Management, Inc Active manager	−506K −65.2%	270K	$332,426
Fred Alger Management, LLC Active manager	−387K Sold out	0	—
Bank Of New York Mellon Corp	−324K −80.1%	80K	$98,818
Mink Brook Asset Management LLC	−284K Sold out	0	—
Voya Investment Management LLC	−256K Sold out	0	—
Stonepine Capital Management, LLC	−253K −25.2%	752K	$924,475
Rathbones Group PLC	−246K −55.0%	201K	$247,034
Dimensional Fund Advisors LP	−232K −46.1%	271K	$333,094
Nuveen, LLC	−218K Sold out	0	—
Charles Schwab Investment Management Inc Index funds	−211K −64.3%	117K	$144,146
D. E. Shaw & Co., Inc. Hedge fund	−201K Sold out	0	—
Strs Ohio	−130K Sold out	0	—
Invesco Ltd.	−119K Sold out	0	—
Alliancebernstein L.P. Active manager	−100K Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Jacobs Levy Equity Management, Inc Active manager	−506K −65.2%	270K	$332,426
Fred Alger Management, LLC Active manager	−387K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−201K Sold out	0	—
Alliancebernstein L.P. Active manager	−100K Sold out	0	—
Renaissance Technologies LLC Hedge fund	−82K −4.1%	1.9M	$2.4M
Los Angeles Capital Management LLC Active manager	−63K Sold out	0	—
Price T Rowe Associates Inc Active manager	−52K Sold out	0	—
Intech Investment Management LLC Active manager	−27K Sold out	0	—
Graham Capital Management, L.P. Hedge fund	−11K Sold out	0	—
FMR LLC Active manager	−9,788 −5.1%	180K	$221,815

New positions

largest by value

Institution	Shares	Value June 30, 2026
Rbf Capital, LLC	1.3M	$1.6M
Man Group PLCHedge fund	449K	$552,218
Qube Research & Technologies LtdHedge fund	389K	$478,595
Point72 Asset Management, L.P.Hedge fund	300K	$368,819
Marquette Asset Management, LLC	286K	$351,174
Aster Capital Management (Difc) Ltd	163K	$200,822
Quadrature Capital LtdHedge fund	106K	$129,785
J. Goldman & Co LPHedge fund	100K	$122,665
Panagora Asset Management IncActive manager	89K	$109,802
Tudor Investment Corp Et AlHedge fund	78K	$96,325

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Fred Alger Management, LLCActive manager	387K	$271,634
Mink Brook Asset Management LLC	284K	$199,527
Voya Investment Management LLC	256K	$179,924
Alliancebernstein L.P.Active manager	100K	$155,155
Nuveen, LLC	218K	$153,494
D. E. Shaw & Co., Inc.Hedge fund	201K	$140,855
Strs Ohio	130K	$90,974
Invesco Ltd.	119K	$83,758
Deutsche Bank Ag\	84K	$58,697
Nine Masts Capital Ltd	64K	$44,673

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 123
Ten largest holders: 59.0%
Index fund managers: 16.3%
Active managers and hedge funds: 19.9%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	17	11	9	8	+4.8M	+60.5%
Index fund managers	3	8	0	1	−9.8M	−48.7%
Other institutions	58	42	18	24	+3.0M	+8.0%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Maxcyte.

Only managers that filed a holdings report for both quarters are compared (156 here). 2 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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