Who owns MDGL (MDGL)
Which tracked institutional funds hold MDGL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MDGL company fundamentals →
Ownership as of the 2026-Q1 13F filings. 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
79 tracked funds added or opened MDGL while 147 trimmed or exited it between 2025-Q4 and 2026-Q1 — 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
MDGL’s largest tracked holder by dollar value, BAKER BROS. ADVISORS LP, sizes it at 6.5% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 6.4pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MDGL 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 2025-Q4 and 2026-Q1, across 383 tracked filers holding MDGL, 192 increased or opened the position and 203 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
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 MDGL between the 2025-Q4 and 2026-Q1 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 27
- VANGUARD PORTFOLIO MANAGEMENT LLC$440M
- VANGUARD CAPITAL MANAGEMENT LLC$433M
- TORONTO DOMINION BANK$68M
- VANGUARD FIDUCIARY TRUST CO$67M
- WESTFIELD CAPITAL MANAGEMENT CO LP$50M
- Logos Global Management LP$44M
Full exits 32
- VANGUARD GROUP INC$1.0B
- MPM BIOIMPACT LLC$56M
- First Light Asset Management, LLC$39M
- Jain Global LLC$31M
- Atika Capital Management LLC$20M
- PUBLIC SECTOR PENSION INVESTMENT BOARD$19M
Largest adds
- CITADEL ADVISORS LLC$217M
- JANUS HENDERSON GROUP PLC$134M
- WELLINGTON MANAGEMENT GROUP LLP$94M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$83M
- ALLIANCEBERNSTEIN L.P.$60M
- Point72 Asset Management, L.P.$44M
Largest trims
- BlackRock, Inc.$266M
- PAULSON & CO. INC.$266M
- BANK OF AMERICA CORP /DE/$143M
- BAKER BROS. ADVISORS LP$126M
- RTW INVESTMENTS, LP$117M
- Avoro Capital Advisors LLC$101M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BAKER BROS. ADVISORS LP | 2,141,701 | $1.1B | 8.4% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 2,018,647 | $1.1B | 7.9% | 2026-Q1 |
| RTW INVESTMENTS, LP | 1,993,687 | $1.0B | 7.8% | 2026-Q1 |
| Avoro Capital Advisors LLC added | 1,818,181 | $952M | 7.1% | 2026-Q1 |
| PAULSON & CO. INC. trimmed | 1,392,188 | $729M | 5.5% | 2026-Q1 |
| BlackRock, Inc. trimmed | 1,321,868 | $692M | 5.2% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 841,145 | $440M | 3.3% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 827,144 | $433M | 3.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 692,287 | $362M | 2.7% | 2026-Q1 |
| STATE STREET CORP added | 609,525 | $319M | 2.4% | 2026-Q1 |
| FMR LLC added | 494,238 | $259M | 1.9% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 455,870 | $239M | 1.8% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 453,843 | $238M | 1.8% | 2026-Q1 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC trimmed | 340,519 | $178M | 1.3% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 328,110 | $172M | 1.3% | 2026-Q1 |
| Invesco Ltd. trimmed | 318,970 | $167M | 1.2% | 2026-Q1 |
| Polar Capital Holdings Plc added | 289,310 | $151M | 1.1% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC trimmed | 277,371 | $145M | 1.1% | 2026-Q1 |
| ARMISTICE CAPITAL, LLC trimmed | 264,583 | $139M | 1.0% | 2026-Q1 |
| Hood River Capital Management LLC added | 249,511 | $131M | 1.0% | 2026-Q1 |
| LORD, ABBETT & CO. LLC trimmed | 242,726 | $127M | 1.0% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 225,510 | $118M | 0.9% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 216,720 | $113M | 0.8% | 2026-Q1 |
| MORGAN STANLEY added | 191,294 | $100M | 0.7% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 189,527 | $99M | 0.7% | 2026-Q1 |
| Pictet Asset Management Holding SA added | 187,240 | $98M | 0.7% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 185,331 | $97M | 0.7% | 2026-Q1 |
| Artisan Partners Limited Partnership trimmed | 183,540 | $96M | 0.7% | 2026-Q1 |
| Fiera Capital Corp added | 174,011 | $91M | 0.7% | 2026-Q1 |
| Rock Springs Capital Management LP added | 170,999 | $90M | 0.7% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 163,933 | $86M | 0.6% | 2026-Q1 |
| Erste Asset Management GmbH added | 160,210 | $81M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 149,214 | $78M | 0.6% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 125,447 | $73M | 0.5% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 135,908 | $71M | 0.5% | 2026-Q1 |
| TORONTO DOMINION BANK added | 130,460 | $68M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 128,079 | $67M | 0.5% | 2026-Q1 |
| Woodline Partners LP added | 125,899 | $66M | 0.5% | 2026-Q1 |
| UBS Group AG added | 117,779 | $62M | 0.5% | 2026-Q1 |
| Driehaus Capital Management LLC trimmed | 110,960 | $58M | 0.4% | 2026-Q1 |
| Tri Locum Partners LP added | 103,288 | $54M | 0.4% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 98,181 | $51M | 0.4% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 98,067 | $51M | 0.4% | 2026-Q1 |
| WESTFIELD CAPITAL MANAGEMENT CO LP new | 94,813 | $50M | 0.4% | 2026-Q1 |
| Logos Global Management LP added | 85,000 | $44M | 0.3% | 2026-Q1 |
| Candriam S.C.A. added | 84,948 | $44M | 0.3% | 2026-Q1 |
| ALKEON CAPITAL MANAGEMENT LLC trimmed | 80,000 | $42M | 0.3% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 75,129 | $39M | 0.3% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 74,041 | $39M | 0.3% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 71,870 | $38M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC trimmed | 66,529 | $34M | 0.3% | 2026-Q1 |
| ArrowMark Colorado Holdings LLC trimmed | 62,441 | $33M | 0.2% | 2026-Q1 |
| Nuveen, LLC trimmed | 62,060 | $32M | 0.2% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 59,971 | $31M | 0.2% | 2026-Q1 |
| NORGES BANK trimmed | 93,997 | $31M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 57,177 | $30M | 0.2% | 2026-Q1 |
| Affinity Asset Advisors, LLC added | 55,000 | $29M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 52,884 | $28M | 0.2% | 2026-Q1 |
| EULAV Asset Management | 49,000 | $26M | 0.2% | 2026-Q1 |
| Russell Investments Group, Ltd. trimmed | 44,504 | $23M | 0.2% | 2026-Q1 |
| Mirae Asset Global Investments Co., Ltd. trimmed | 40,926 | $21M | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 40,853 | $21M | 0.2% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 39,852 | $20M | 0.2% | 2026-Q1 |
| EMERALD ADVISERS, LLC trimmed | 37,654 | $20M | 0.1% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 35,838 | $19M | 0.1% | 2026-Q1 |
| GROUPAMA ASSET MANAGMENT added | 35,238 | $18M | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 36,315 | $18M | 0.1% | 2026-Q1 |
| PFM Health Sciences, LP added | 34,146 | $18M | 0.1% | 2026-Q1 |
| Rockefeller Capital Management L.P. added | 33,849 | $18M | 0.1% | 2026-Q1 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. added | 32,879 | $17M | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 32,212 | $17M | 0.1% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 31,870 | $17M | 0.1% | 2026-Q1 |
| Vestal Point Capital, LP trimmed | 31,468 | $16M | 0.1% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 30,139 | $16M | 0.1% | 2026-Q1 |
| GILDER GAGNON HOWE & CO LLC trimmed | 29,391 | $15M | 0.1% | 2026-Q1 |
| Swiss National Bank added | 29,220 | $15M | 0.1% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. trimmed | 27,937 | $15M | 0.1% | 2026-Q1 |
| CITIGROUP INC added | 25,589 | $13M | 0.1% | 2026-Q1 |
| Integral Health Asset Management, LLC new | 25,000 | $13M | 0.1% | 2026-Q1 |
| Clearbridge Investments, LLC new | 24,447 | $13M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 24,198 | $13M | 0.1% | 2026-Q1 |
| Rhenman & Partners Asset Management AB added | 24,050 | $13M | 0.1% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 23,796 | $12M | 0.1% | 2026-Q1 |
| California Public Employees Retirement System trimmed | 23,198 | $12M | 0.1% | 2026-Q1 |
| WCM INVESTMENT MANAGEMENT, LLC added | 23,560 | $12M | 0.1% | 2026-Q1 |
| FIRST TRUST ADVISORS LP trimmed | 22,233 | $12M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 1,783,884 | $1.0B | 7.8% | 2025-Q4 stale |
| Holocene Advisors, LP new | 390,545 | $129M | 1.0% | 2025-Q1 stale |
| MPM BIOIMPACT LLC trimmed | 96,780 | $56M | 0.4% | 2025-Q4 stale |
| First Light Asset Management, LLC added | 66,831 | $39M | 0.3% | 2025-Q4 stale |
| BALYASNY ASSET MANAGEMENT L.P. added | 82,401 | $38M | 0.3% | 2025-Q3 stale |
| EcoR1 Capital, LLC | 75,000 | $34M | 0.3% | 2025-Q3 stale |
| Jain Global LLC new | 52,721 | $31M | 0.2% | 2025-Q4 stale |
| Iron Triangle Partners LP new | 58,378 | $27M | 0.2% | 2025-Q3 stale |
| Atika Capital Management LLC added | 34,000 | $20M | 0.1% | 2025-Q4 stale |
| PUBLIC SECTOR PENSION INVESTMENT BOARD new | 32,871 | $19M | 0.1% | 2025-Q4 stale |
| BRAIDWELL LP added | 60,781 | $18M | 0.1% | 2025-Q2 stale |
| STEADFAST CAPITAL MANAGEMENT LP trimmed | 26,850 | $16M | 0.1% | 2025-Q4 stale |
| PERCEPTIVE ADVISORS LLC trimmed | 46,500 | $15M | 0.1% | 2025-Q1 stale |
| Ally Bridge Group (NY) LLC added | 32,662 | $15M | 0.1% | 2025-Q3 stale |
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.