Who owns MaxCyte (MXCT)
Which tracked institutional funds hold MXCT, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MXCT company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on MXCT is one-sided between 2026-Q1 and 2026-Q2: 23 added or opened and 4 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MXCT’s largest tracked holder by dollar value, Capricorn Fund Managers Ltd, sizes it at 0.8% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.8pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MXCT divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 119 tracked filers holding MXCT, 76 increased or opened the position and 68 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MXCT between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 2
- RBF Capital, LLC$2M
- Man Group plc$552K
Largest adds
- Capricorn Fund Managers Ltd$4M
- Vitruvian Partners LLP$3M
- VANGUARD CAPITAL MANAGEMENT LLC$2M
- Brooklands Fund Management Ltd$2M
- MORGAN STANLEY$2M
- JANE STREET GROUP, LLC$2M
Largest trims
- BlackRock, Inc.$2M
- STATE STREET CORP$905K
- LUMINUS MANAGEMENT LLC$733K
- VANGUARD PORTFOLIO MANAGEMENT LLC$305K
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Capricorn Fund Managers Ltd | 8,200,000 | $10M | 13.1% | 2026-Q2 |
| Vitruvian Partners LLP | 5,043,356 | $6M | 8.0% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 4,031,284 | $5M | 6.4% | 2026-Q2 |
| MORGAN STANLEY added | 3,694,049 | $5M | 5.9% | 2026-Q2 |
| Mudita Advisors LLP | 3,370,689 | $4M | 5.4% | 2026-Q2 |
| BlackRock, Inc. trimmed | 3,060,960 | $4M | 4.9% | 2026-Q2 |
| Brooklands Fund Management Ltd added | 2,848,083 | $4M | 4.8% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 2,773,554 | $3M | 4.4% | 2026-Q2 |
| CADIAN CAPITAL MANAGEMENT, LP added | 2,201,166 | $3M | 3.5% | 2026-Q2 |
| Peapod Lane Capital LLC added | 2,125,752 | $3M | 3.4% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 1,910,800 | $2M | 3.0% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 1,882,776 | $2M | 3.0% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 1,563,003 | $2M | 2.5% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 1,462,941 | $2M | 2.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 1,326,914 | $2M | 2.1% | 2026-Q2 |
| RBF Capital, LLC new | 1,322,443 | $2M | 2.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,241,943 | $2M | 2.0% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 1,204,921 | $1M | 1.9% | 2026-Q2 |
| NANO CAP NEW MILLENNIUM GROWTH FUND L P added | 1,200,000 | $1M | 1.9% | 2026-Q2 |
| MARSHALL WACE, LLP added | 1,014,778 | $1M | 1.6% | 2026-Q2 |
| Willis Investment Counsel | 862,758 | $1M | 1.4% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 856,318 | $1M | 1.4% | 2026-Q2 |
| Stonepine Capital Management, LLC trimmed | 751,606 | $924K | 1.2% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 653,203 | $803K | 1.0% | 2026-Q2 |
| George Kaiser Family Foundation added | 627,536 | $772K | 1.0% | 2026-Q2 |
| STATE STREET CORP trimmed | 516,750 | $636K | 0.8% | 2026-Q2 |
| Man Group plc new | 448,958 | $552K | 0.7% | 2026-Q2 |
| Qube Research & Technologies Ltd added | 389,102 | $479K | 0.6% | 2026-Q2 |
| Apollo Management Holdings, L.P. | 307,987 | $379K | 0.5% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 299,853 | $369K | 0.5% | 2026-Q2 |
| Marquette Asset Management, LLC new | 285,507 | $351K | 0.5% | 2026-Q2 |
| UBS Group AG added | 284,273 | $350K | 0.5% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 270,740 | $333K | 0.4% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 270,265 | $332K | 0.4% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 264,914 | $326K | 0.4% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 260,443 | $320K | 0.4% | 2026-Q2 |
| IEQ CAPITAL, LLC added | 237,962 | $293K | 0.4% | 2026-Q2 |
| XTX Topco Ltd added | 206,590 | $254K | 0.3% | 2026-Q2 |
| Rathbones Group PLC trimmed | 200,841 | $247K | 0.3% | 2026-Q2 |
| FMR LLC trimmed | 180,338 | $222K | 0.3% | 2026-Q2 |
| Aster Capital Management (DIFC) Ltd new | 163,270 | $201K | 0.3% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 156,992 | $193K | 0.3% | 2026-Q2 |
| HSBC HOLDINGS PLC trimmed | 155,801 | $189K | 0.2% | 2026-Q2 |
| Callan Family Office, LLC added | 154,311 | $190K | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 149,013 | $183K | 0.2% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 117,192 | $144K | 0.2% | 2026-Q2 |
| Quadrature Capital Ltd added | 105,516 | $130K | 0.2% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 100,716 | $124K | 0.2% | 2026-Q2 |
| J. Goldman & Co LP new | 99,728 | $123K | 0.2% | 2026-Q2 |
| Cerity Partners LLC added | 97,858 | $120K | 0.2% | 2026-Q2 |
| Mariner, LLC added | 96,672 | $119K | 0.2% | 2026-Q2 |
| PANAGORA ASSET MANAGEMENT INC new | 89,270 | $110K | 0.1% | 2026-Q2 |
| CABOT WEALTH MANAGEMENT INC | 88,623 | $109K | 0.1% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 80,340 | $99K | 0.1% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 79,472 | $98K | 0.1% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL new | 78,313 | $96K | 0.1% | 2026-Q2 |
| Jain Global LLC added | 71,895 | $88K | 0.1% | 2026-Q2 |
| Vanguard Personalized Indexing Management, LLC added | 62,992 | $77K | 0.1% | 2026-Q2 |
| Catalyst Funds Management Pty Ltd added | 61,700 | $76K | 0.1% | 2026-Q2 |
| LUMINUS MANAGEMENT LLC trimmed | 60,604 | $75K | 0.1% | 2026-Q2 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC added | 57,390 | $76K | 0.1% | 2026-Q2 |
| Waverly Advisors, LLC added | 54,014 | $66K | 0.1% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 53,931 | $66K | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 47,973 | $59K | 0.1% | 2026-Q2 |
| MERCER GLOBAL ADVISORS INC /ADV added | 47,756 | $59K | 0.1% | 2026-Q2 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO trimmed | 43,800 | $54K | 0.1% | 2026-Q2 |
| JMN Financial LLC new | 41,839 | $51K | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 41,000 | $50K | 0.1% | 2026-Q2 |
| CANADA PENSION PLAN INVESTMENT BOARD new | 35,700 | $44K | 0.1% | 2026-Q2 |
| Creative Planning added | 32,944 | $41K | 0.1% | 2026-Q2 |
| Arax Advisory Partners added | 31,378 | $39K | 0.0% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS added | 31,344 | $39K | 0.0% | 2026-Q2 |
| KWMG, LLC | 25,833 | $32K | 0.0% | 2026-Q2 |
| BRIGHTON JONES LLC new | 24,157 | $30K | 0.0% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd new | 23,436 | $29K | 0.0% | 2026-Q2 |
| PNC Financial Services Group, Inc. added | 23,010 | $28K | 0.0% | 2026-Q2 |
| Jump Financial, LLC added | 22,200 | $27K | 0.0% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 20,628 | $25K | 0.0% | 2026-Q2 |
| R Squared Ltd added | 19,780 | $24K | 0.0% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 18,076 | $22K | 0.0% | 2026-Q2 |
| Granite Investment Partners, LLC | 17,463 | $21K | 0.0% | 2026-Q2 |
| Focus Partners Wealth added | 16,916 | $21K | 0.0% | 2026-Q2 |
| Jefferies Financial Group Inc. added | 15,972 | $20K | 0.0% | 2026-Q2 |
| Spark Investment Management LLC new | 15,900 | $20K | 0.0% | 2026-Q2 |
| Pallas Capital Advisors LLC new | 15,629 | $19K | 0.0% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 14,844 | $18K | 0.0% | 2026-Q2 |
| Merit Financial Group, LLC new | 14,654 | $18K | 0.0% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. new | 13,548 | $17K | 0.0% | 2026-Q2 |
| BLAIR WILLIAM & CO/IL trimmed | 12,069 | $15K | 0.0% | 2026-Q2 |
| COLDSTREAM CAPITAL MANAGEMENT INC new | 11,950 | $15K | 0.0% | 2026-Q2 |
| VICTORY CAPITAL MANAGEMENT INC added | 11,457 | $14K | 0.0% | 2026-Q2 |
| Integrated Wealth Concepts LLC new | 9,851 | $12K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 8,184 | $10K | 0.0% | 2026-Q2 |
| GAMMA Investing LLC added | 5,702 | $7K | 0.0% | 2026-Q2 |
| Allworth Financial LP added | 4,558 | $6K | 0.0% | 2026-Q2 |
| Russell Investments Group, Ltd. trimmed | 3,971 | $5K | 0.0% | 2026-Q2 |
| EverSource Wealth Advisors, LLC added | 3,116 | $4K | 0.0% | 2026-Q2 |
| Essential Partners LLC trimmed | 2,115 | $3K | 0.0% | 2026-Q2 |
| Bare Financial Services, Inc new | 1,599 | $2K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 1,575 | $2K | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.