MAPLIGHT THERAPEUTICS INC (MPLT)
Institutional ownership reported to the SEC as of Q2 2026, across 3 quarters.
102
Reporting holders
$794.2M
Reported value
52.2%
Of shares outstanding
0.1%
Held as options
+23
Holder change
Institutions report 22,134,593 shares against 42,436,326 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Share count carried from an earlier filing (cy2026q1i).
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| NOVO HOLDINGS A/S | $132.1M | 3,686,622 | 7.67% | 3q | HELD |
| FCPM III SERVICES B.V. | $115.6M | 3,226,400 | 15.41% | 3q | HELD |
| GOLDMAN SACHS GROUP INC | $69.8M | 1,948,312 | 0.01% | 3q | -2.3%-$1.7M |
| BlackRock, Inc. | $36.7M | 1,025,134 | 0.00% | 3q | -23.5%-$11.3M |
| Nan Fung Group Holdings Ltd | $34.8M | 971,253 | 26.47% | 3q | HELD |
| 5AM Venture Management, LLC | $34.0M | 950,011 | 11.83% | 3q | HELD |
| Sanofi | $32.7M | 912,041 | 6.12% | 3q | HELD |
| STATE STREET CORP | $30.5M | 852,150 | 0.00% | 3q | +151.3%+$18.4M |
| FMR LLC | $29.5M | 823,556 | 0.00% | 3q | +302.7%+$22.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | $28.1M | 784,150 | 0.00% | 2q | +8.9%+$2.3M |
| Blue Owl Capital Holdings LP | $26.2M | 729,929 | 3.94% | 3q | -27.4%-$9.9M |
| Paradigm Biocapital Advisors LP | $24.6M | 685,852 | 0.46% | new | NEW |
| Pivotal bioVenture Partners Investment Advisor LLC | $21.9M | 611,446 | 7.12% | 3q | HELD |
| Velan Capital Investment Management LP | $17.7M | 492,893 | 10.76% | 3q | HELD |
| Siren, L.L.C. | $16.1M | 450,000 | 0.33% | 3q | HELD |
| Capital World Investors | $14.9M | 415,730 | 0.00% | new | NEW |
| GEODE CAPITAL MANAGEMENT, LLC | $14.4M | 402,051 | 0.00% | 3q | -16.4%-$2.8M |
| BAKER BROS. ADVISORS LP | $13.1M | 364,705 | 0.07% | 3q | HELD |
| DAFNA Capital Management LLC | $6.1M | 171,006 | 1.17% | 3q | HELD |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $6.1M | 170,862 | 0.01% | 3q | -36.2%-$3.5M |
| Freestone Grove Partners LP | $6.1M | 168,912 | 0.04% | 3q | -46.2%-$5.2M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $4.9M | 136,818 | 0.00% | 3q | -15.1%-$871.9K |
| Sixth Street Partners Management Company, L.P. | $4.9M | 136,818 | 0.00% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $4.6M | 128,841 | 0.00% | new | NEW |
| SUPERSTRING CAPITAL MANAGEMENT LP | $4.5M | 125,432 | 2.84% | 2q | -34.7%-$2.4M |
| VANGUARD FIDUCIARY TRUST CO | $4.4M | 123,135 | 0.00% | 2q | -6.2%-$290.2K |
| UBS Group AG | $4.4M | 122,028 | 0.00% | 3q | -48.4%-$4.1M |
| NORTHERN TRUST CORP | $4.2M | 116,652 | 0.00% | 3q | -20.2%-$1.1M |
| STEMPOINT CAPITAL LP | $3.8M | 106,906 | 0.66% | 3q | -46.5%-$3.3M |
| SEVEN GRAND MANAGERS, LLC | $3.6M | 100,000 | 0.14% | 3q | HELD |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $3.5M | 96,761 | 0.00% | 2q | -14.1%-$567.8K |
| LAZARD ASSET MANAGEMENT LLC | $2.9M | 80,082 | 0.00% | 3q | -43.6%-$2.2M |
| Burkehill Global Management, LP | $2.7M | 75,000 | 0.10% | 3q | HELD |
| Boxer Capital Management, LLC | $2.7M | 75,000 | 0.20% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $2.5M | 70,484 | 0.00% | 3q | +89.0%+$1.2M |
| Trexquant Investment LP | $2.3M | 63,792 | 0.01% | new | NEW |
| TD Asset Management Inc | $2.0M | 54,526 | 0.00% | 3q | +14.1%+$242.2K |
| BANK OF AMERICA CORP /DE/ | $2.0M | 54,464 | 0.00% | 3q | +188.6%+$1.3M |
| WELLINGTON MANAGEMENT GROUP LLP | $1.9M | 51,917 | 0.00% | 2q | +12.4%+$204.6K |
| Jain Global LLC | $1.6M | 45,551 | 0.01% | new | NEW |
| CITADEL ADVISORS LLC | $1.5M | 25,751 | 0.00% | new | NEW |
| MORGAN STANLEY | $1.4M | 38,304 | 0.00% | 3q | +25.6%+$279.5K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $1.3M | 35,000 | 0.02% | new | NEW |
| Weiss Asset Management LP | $1.2M | 33,094 | 0.01% | new | NEW |
| Bank of New York Mellon Corp | $1.1M | 30,410 | 0.00% | 3q | -22.9%-$324.5K |
| ADAR1 Capital Management, LLC | $949.7K | 26,497 | 0.04% | 2q | -92.9%-$12.5M |
| Jump Financial, LLC | $904.0K | 25,222 | 0.01% | new | NEW |
| XTX Topco Ltd | $893.1K | 24,919 | 0.01% | 2q | +142.9%+$525.3K |
| Ghisallo Capital Management LLC | $716.8K | 20,000 | 0.01% | 3q | HELD |
| Nuveen, LLC | $642.3K | 17,921 | 0.00% | 3q | -22.4%-$185.2K |
| CITIGROUP INC | $611.1K | 17,051 | 0.00% | 3q | +1676.1%+$576.7K |
| RHUMBLINE ADVISERS | $564.4K | 15,748 | 0.00% | 3q | -22.7%-$165.6K |
| MARKET STREET WEALTH MANAGEMENT ADVISORS LLC | $506.2K | 14,124 | 0.07% | 2q | HELD |
| Rafferty Asset Management, LLC | $496.5K | 13,853 | 0.00% | new | NEW |
| BARCLAYS PLC | $465.0K | 12,975 | 0.00% | 3q | +124.1%+$257.5K |
| Virtus Investment Advisers, LLC | $422.6K | 11,791 | 0.10% | new | NEW |
| Quantinno Capital Management LP | $406.4K | 11,339 | 0.00% | new | NEW |
| MA Private Wealth | $372.3K | 10,389 | 0.06% | new | NEW |
| DEUTSCHE BANK AG\ | $370.1K | 10,326 | 0.00% | 3q | -24.5%-$120.2K |
| LMR Partners LLP | $358.4K | 10,000 | 0.00% | 3q | HELD |
| WELLS FARGO & COMPANY/MN | $337.6K | 9,419 | 0.00% | 3q | -34.3%-$175.9K |
| TWO SIGMA INVESTMENTS, LP | $322.5K | 8,998 | 0.00% | 2q | -36.2%-$182.8K |
| Vanguard Global Advisers, LLC | $302.1K | 8,428 | 0.00% | 2q | HELD |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $297.5K | options only | 0.00% | new | OPTIONS |
| AMERICAN CENTURY COMPANIES INC | $267.7K | 7,470 | 0.00% | new | NEW |
| MetLife Investment Management, LLC | $263.5K | 7,353 | 0.00% | 3q | -25.0%-$87.6K |
| Russell Investments Group, Ltd. | $260.4K | 7,267 | 0.00% | 3q | +443.5%+$212.5K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $252.3K | 7,040 | 0.00% | new | NEW |
| PROFUND ADVISORS LLC | $249.3K | 6,956 | 0.01% | new | NEW |
| RENAISSANCE TECHNOLOGIES LLC | $248.6K | 6,937 | 0.00% | new | NEW |
| RAYMOND JAMES FINANCIAL INC | $231.3K | 6,455 | 0.00% | new | NEW |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $227.3K | 6,411 | 0.00% | 3q | -29.2%-$94.0K |
| MARSHALL WACE, LLP | $207.9K | 5,800 | 0.00% | new | NEW |
| Invesco Ltd. | $205.3K | 5,729 | 0.00% | 3q | -53.2%-$233.8K |
| Police & Firemen's Retirement System of New Jersey | $196.8K | 5,491 | 0.00% | 3q | +37.8%+$53.9K |
| NEW YORK STATE COMMON RETIREMENT FUND | $190.0K | 5,300 | 0.00% | 3q | HELD |
| JPMORGAN CHASE & CO | $148.6K | 4,332 | 0.00% | 3q | -44.9%-$121.3K |
| T. Rowe Price Investment Management, Inc. | $99.7K | 2,781,728 | 0.07% | 3q | -0.7% |
| Tower Research Capital LLC (TRC) | $71.5K | 1,996 | 0.00% | 3q | +3.5%+$2.4K |
| OSAIC HOLDINGS, INC. | $68.0K | 1,898 | 0.00% | new | NEW |
| Aster Capital Management (DIFC) Ltd | $53.0K | 1,480 | 0.01% | new | NEW |
| PRICE T ROWE ASSOCIATES INC /MD/ | $51.0K | 1,422,935 | 0.01% | 2q | +1162.5%+$47.0K |
| Pinnacle Wealth Planning Services, Inc. | $45.3K | 1,265 | 0.00% | new | NEW |
| SBI Securities Co., Ltd. | $41.6K | 1,160 | 0.00% | 3q | +108.3%+$21.6K |
| Legal & General Group Plc | $37.0K | 1,033 | 0.00% | 3q | -42.8%-$27.7K |
| Ameritas Investment Partners, Inc. | $33.9K | 946 | 0.00% | 3q | -31.0%-$15.2K |
| MERCER GLOBAL ADVISORS INC /ADV | $21.1K | 590 | 0.00% | new | NEW |
| Caitong International Asset Management Co., Ltd | $19.7K | 550 | 0.00% | new | NEW |
| SIMPLEX TRADING, LLC | $19.3K | 538 | 0.00% | new | NEW |
| ROYAL BANK OF CANADA | $17.0K | 474 | 0.00% | new | NEW |
| NISA INVESTMENT ADVISORS, LLC | $14.3K | 400 | 0.00% | new | NEW |
| State of Wyoming | $12.9K | 361 | 0.00% | new | NEW |
| GAMMA Investing LLC | $4.4K | 123 | 0.00% | 2q | +30.9%+$1.0K |
| Farther Finance Advisors, LLC | $4.3K | 120 | 0.00% | 3q | HELD |
| PNC Financial Services Group, Inc. | $3.4K | 94 | 0.00% | new | NEW |
| Global Retirement Partners, LLC | $2.3K | 63 | 0.00% | new | NEW |
| Sterling Capital Management LLC | $2.0K | 56 | 0.00% | 3q | -84.9%-$11.3K |
| HRT FINANCIAL LP | $1.9K | 51,983 | 0.00% | new | NEW |
| Versant Capital Management, Inc | $1.8K | 50 | 0.00% | 2q | HELD |
| Arax Advisory Partners | $1.2K | 33 | 0.00% | 2q | +560.0%+$1.0K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-20 | 13G | Nan Fung Group Holdings Limitedwith 9 co-filers | 5.5% |
| 2026-08-18 | 13D/A | Catalyst4, Inc.with 3 co-filers | 49.9% |
| 2026-08-03 | 13D/A | Catalyst4, Inc.with 3 co-filers | 47.9% |
| 2026-07-31 | 13D/A | Novo Holdings A/S | 4.9% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 102 | $794.2M | 22,134,593 | 36 | 19 | 28 | 0.1% |
| Q1 2026 | 79 | $445.1M | 21,893,000 | 17 | 26 | 12 | 0.0% |
| Q4 2025 | 71 | $353.3M | 20,118,071 | 71 | 0 | 0 | 0.0% |