Who owns MSOS
Which tracked institutional funds hold MSOS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MSOS company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-02). 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
31 tracked funds added or opened MSOS while 12 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
MSOS’s largest tracked holder by dollar value, Anson Funds Management LP, sizes it at 5.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 5.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MSOS 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 161 tracked filers holding MSOS, 62 increased or opened the position and 74 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 MSOS 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 5
- JANE STREET GROUP, LLC$19M
- Elequin Capital, LP$4M
- COMPASS FINANCIAL MANAGEMENT LLC$3M
- Clayton Partners LLC$2M
- Hedges Asset Management LLC$716K
Full exits 4
- Two Seas Capital LP$12M
- MILLENNIUM MANAGEMENT LLC$1M
- Monaco Asset Management SAM$1M
- HRT FINANCIAL LP$531K
Largest adds
- MONTANOVA CAPITAL, LLC$17M
- CITADEL ADVISORS LLC$5M
- Anson Funds Management LP$4M
- GROUP ONE TRADING LLC$4M
- Clear Street Group Inc.$3M
- Murchinson Ltd.$3M
Largest trims
- Marex Group Ltd$17M
- AdvisorShares Investments LLC$7M
- Sender Co & Partners, Inc.$2M
- Venture Visionary Partners LLC$994K
- RAFFLES ASSOCIATES LP$773K
- Private Advisor Group, LLC$574K
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 |
|---|---|---|---|---|
| Anson Funds Management LP trimmed | 12,136,662 | $62M | 23.7% | 2026-Q2 |
| MONTANOVA CAPITAL, LLC added | 9,738,524 | $49M | 19.0% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 3,807,282 | $19M | 7.4% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 3,083,371 | $16M | 6.0% | 2026-Q2 |
| Marex Group Ltd trimmed | 2,100,000 | $11M | 4.1% | 2026-Q2 |
| Clear Street Group Inc. | 2,007,632 | $10M | 3.9% | 2026-Q2 |
| AdvisorShares Investments LLC trimmed | 1,548,425 | $8M | 3.0% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 1,502,265 | $8M | 2.9% | 2026-Q2 |
| Murchinson Ltd. added | 1,249,895 | $6M | 2.4% | 2026-Q2 |
| GROUP ONE TRADING LLC added | 891,056 | $5M | 1.7% | 2026-Q2 |
| CITIGROUP INC trimmed | 837,309 | $4M | 1.6% | 2026-Q2 |
| Concurrent Investment Advisors, LLC trimmed | 808,824 | $4M | 1.6% | 2026-Q2 |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC trimmed | 800,000 | $4M | 1.6% | 2026-Q2 |
| Elequin Capital, LP new | 788,113 | $4M | 1.5% | 2026-Q2 |
| IMC-Chicago, LLC added | 771,373 | $4M | 1.5% | 2026-Q2 |
| COMPASS FINANCIAL MANAGEMENT LLC new | 644,107 | $3M | 1.3% | 2026-Q2 |
| Kazazian Asset Management, LLC | 526,554 | $3M | 1.0% | 2026-Q2 |
| Bleakley Financial Group, LLC trimmed | 435,533 | $2M | 0.9% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC added | 343,722 | $2M | 0.7% | 2026-Q2 |
| LPL Financial LLC added | 326,887 | $2M | 0.6% | 2026-Q2 |
| MORGAN STANLEY trimmed | 318,542 | $2M | 0.6% | 2026-Q2 |
| Clayton Partners LLC new | 300,000 | $2M | 0.6% | 2026-Q2 |
| RAFFLES ASSOCIATES LP trimmed | 295,000 | $1M | 0.6% | 2026-Q2 |
| Corient Private Wealth LP trimmed | 289,656 | $1M | 0.6% | 2026-Q2 |
| Cresset Asset Management, LLC trimmed | 263,130 | $1M | 0.5% | 2026-Q2 |
| Lighthouse Investment Partners, LLC | 237,067 | $1M | 0.5% | 2026-Q2 |
| INTREPID CAPITAL MANAGEMENT INC trimmed | 206,050 | $1M | 0.4% | 2026-Q2 |
| SCOGGIN MANAGEMENT LP trimmed | 200,000 | $1M | 0.4% | 2026-Q2 |
| SIMPLEX TRADING, LLC added | 193,286 | $982K | 0.4% | 2026-Q2 |
| CSS LLC/IL | 177,200 | $900K | 0.3% | 2026-Q2 |
| COMMONWEALTH EQUITY SERVICES, LLC trimmed | 170,585 | $867K | 0.3% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 167,200 | $849K | 0.3% | 2026-Q2 |
| Sender Co & Partners, Inc. trimmed | 162,091 | $823K | 0.3% | 2026-Q2 |
| Walleye Trading LLC added | 155,542 | $790K | 0.3% | 2026-Q2 |
| JW Asset Management, LLC added | 155,000 | $787K | 0.3% | 2026-Q2 |
| Geneos Wealth Management Inc. added | 152,346 | $774K | 0.3% | 2026-Q2 |
| Parallax Volatility Advisers, L.P. added | 151,353 | $769K | 0.3% | 2026-Q2 |
| Hedges Asset Management LLC added | 141,000 | $716K | 0.3% | 2026-Q2 |
| Venture Visionary Partners LLC trimmed | 140,484 | $714K | 0.3% | 2026-Q2 |
| Mesirow Financial Investment Management, Inc. added | 136,600 | $694K | 0.3% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 122,673 | $623K | 0.2% | 2026-Q2 |
| IHT Wealth Management, LLC trimmed | 111,200 | $565K | 0.2% | 2026-Q2 |
| LJI Wealth Management, LLC trimmed | 98,970 | $503K | 0.2% | 2026-Q2 |
| Manatuck Hill Partners, LLC new | 90,750 | $461K | 0.2% | 2026-Q2 |
| UBS Group AG added | 86,204 | $438K | 0.2% | 2026-Q2 |
| EWA, LLC | 81,039 | $412K | 0.2% | 2026-Q2 |
| Summit Trail Advisors, LLC added | 79,700 | $405K | 0.2% | 2026-Q2 |
| Pekin Hardy Strauss, Inc. added | 79,476 | $404K | 0.2% | 2026-Q2 |
| VestGen Advisors, LLC | 77,310 | $373K | 0.1% | 2026-Q2 |
| NewEdge Wealth, LLC trimmed | 75,168 | $382K | 0.1% | 2026-Q2 |
| Centiva Capital, LP trimmed | 75,000 | $381K | 0.1% | 2026-Q2 |
| Militia Capital Management LLC new | 74,800 | $380K | 0.1% | 2026-Q2 |
| Proficio Capital Partners LLC | 70,633 | $359K | 0.1% | 2026-Q2 |
| Strategic Financial Concepts, LLC new | 69,133 | $351K | 0.1% | 2026-Q2 |
| Stirlingshire Investments, Inc. added | 66,892 | $340K | 0.1% | 2026-Q2 |
| Black Maple Capital Management LP | 65,000 | $330K | 0.1% | 2026-Q2 |
| &PARTNERS | 63,584 | $323K | 0.1% | 2026-Q2 |
| TRUIST FINANCIAL CORP trimmed | 59,112 | $300K | 0.1% | 2026-Q2 |
| Caption Management, LLC added | 59,100 | $300K | 0.1% | 2026-Q2 |
| Worth Asset Management, LLC new | 58,067 | $295K | 0.1% | 2026-Q2 |
| WEXFORD CAPITAL LP trimmed | 57,564 | $292K | 0.1% | 2026-Q2 |
| UHLMANN PRICE SECURITIES, LLC added | 53,225 | $270K | 0.1% | 2026-Q2 |
| ArchPoint Investors | 51,050 | $259K | 0.1% | 2026-Q2 |
| Simplicity Wealth,LLC trimmed | 49,756 | $253K | 0.1% | 2026-Q2 |
| Vigilare Wealth Management added | 48,500 | $246K | 0.1% | 2026-Q2 |
| HERITAGE OAK WEALTH ADVISORS LLC trimmed | 44,295 | $225K | 0.1% | 2026-Q2 |
| Caprock Group, LLC added | 42,827 | $218K | 0.1% | 2026-Q2 |
| Miller Global Investments, LLC | 42,790 | $217K | 0.1% | 2026-Q2 |
| TWO SIGMA SECURITIES, LLC added | 42,127 | $214K | 0.1% | 2026-Q2 |
| Advisory Services Network, LLC added | 41,734 | $212K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 40,355 | $195K | 0.1% | 2026-Q2 |
| DAVENPORT & Co LLC | 40,000 | $203K | 0.1% | 2026-Q2 |
| Horrell Capital Management, Inc. trimmed | 36,507 | $185K | 0.1% | 2026-Q2 |
| Diversify Advisory Services, LLC new | 34,840 | $148K | 0.1% | 2026-Q2 |
| DIVERSIFY WEALTH MANAGEMENT, LLC | 34,840 | $148K | 0.1% | 2026-Q2 |
| Cedar Wealth Management, LLC | 34,359 | $175K | 0.1% | 2026-Q2 |
| Creative Planning added | 32,536 | $165K | 0.1% | 2026-Q2 |
| Northside Capital Management, LLC | 32,290 | $164K | 0.1% | 2026-Q2 |
| CONSOLIDATED CAPITAL MANAGEMENT, LLC trimmed | 28,982 | $147K | 0.1% | 2026-Q2 |
| Foundations Investment Advisors, LLC | 27,554 | $140K | 0.1% | 2026-Q2 |
| Dynamic Technology Lab Private Ltd trimmed | 27,076 | $138K | 0.1% | 2026-Q2 |
| Beacon Pointe Advisors, LLC added | 25,764 | $131K | 0.1% | 2026-Q2 |
| Cetera Investment Advisers trimmed | 25,692 | $131K | 0.1% | 2026-Q2 |
| FLAGSHIP HARBOR ADVISORS, LLC added | 25,238 | $128K | 0.0% | 2026-Q2 |
| K.J. Harrison & Partners Inc trimmed | 24,537 | $125K | 0.0% | 2026-Q2 |
| Perigon Wealth Management, LLC added | 24,230 | $123K | 0.0% | 2026-Q2 |
| STEPHENS INC /AR/ | 24,100 | $122K | 0.0% | 2026-Q2 |
| Pathstone Holdings, LLC added | 22,360 | $114K | 0.0% | 2026-Q2 |
| Exit Wealth Advisors, LLC. trimmed | 21,654 | $110K | 0.0% | 2026-Q2 |
| Private Advisor Group, LLC trimmed | 20,588 | $105K | 0.0% | 2026-Q2 |
| Vontobel Holding Ltd. added | 19,326 | $98K | 0.0% | 2026-Q2 |
| Concorde Asset Management, LLC trimmed | 19,160 | $97K | 0.0% | 2026-Q2 |
| SIGNATURE ESTATE & INVESTMENT ADVISORS LLC trimmed | 18,974 | $96K | 0.0% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 18,597 | $94K | 0.0% | 2026-Q2 |
| CAPTRUST FINANCIAL ADVISORS new | 18,559 | $94K | 0.0% | 2026-Q2 |
| Cerity Partners LLC trimmed | 16,994 | $86K | 0.0% | 2026-Q2 |
| StoneX Group Inc. trimmed | 16,765 | $83K | 0.0% | 2026-Q2 |
| PenderFund Capital Management Ltd. trimmed | 16,200 | $82K | 0.0% | 2026-Q2 |
| J.W. COLE ADVISORS, INC. trimmed | 15,521 | $79K | 0.0% | 2026-Q2 |
| SIG BROKERAGE, LP | 15,450 | $78K | 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.