Who owns TNGX (TNGX)
Which tracked institutional funds hold TNGX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TNGX 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
The tracked-fund tape on TNGX is one-sided between 2025-Q4 and 2026-Q1: 115 added or opened and 18 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
TNGX’s largest tracked holder by dollar value, RTW INVESTMENTS, LP, sizes it at 2.8% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 2.7pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in TNGX 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 194 tracked filers holding TNGX, 122 increased or opened the position and 92 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 TNGX 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 CAPITAL MANAGEMENT LLC$108M
- Paradigm Biocapital Advisors LP$84M
- Holocene Advisors, LP$82M
- Cormorant Asset Management, LP$30M
- VANGUARD PORTFOLIO MANAGEMENT LLC$19M
- VANGUARD FIDUCIARY TRUST CO$14M
Full exits 15
- VANGUARD GROUP INC$53M
- SUVRETTA CAPITAL MANAGEMENT, LLC$24M
- D. E. Shaw & Co., Inc.$9M
- Affinity Asset Advisors, LLC$9M
- Bain Capital Life Sciences Investors, LLC$6M
- MARSHALL WACE, LLP$3M
Largest adds
- RTW INVESTMENTS, LP$265M
- FMR LLC$179M
- ADAGE CAPITAL PARTNERS GP, L.L.C.$174M
- Boxer Capital Management, LLC$131M
- BlackRock, Inc.$107M
- TCG Crossover Management, LLC$107M
Largest trims
- Point72 Asset Management, L.P.$6M
- Nantahala Capital Management, LLC$5M
- BARCLAYS PLC$3M
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 |
|---|---|---|---|---|
| RTW INVESTMENTS, LP added | 13,300,620 | $278M | 7.0% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 12,809,485 | $268M | 6.7% | 2026-Q1 |
| Boxer Capital Management, LLC | 10,876,219 | $228M | 5.7% | 2026-Q1 |
| TCG Crossover Management, LLC trimmed | 10,531,071 | $220M | 5.5% | 2026-Q1 |
| FMR LLC added | 9,767,852 | $204M | 5.1% | 2026-Q1 |
| FARALLON CAPITAL MANAGEMENT LLC trimmed | 9,097,411 | $190M | 4.8% | 2026-Q1 |
| BlackRock, Inc. added | 8,748,045 | $183M | 4.6% | 2026-Q1 |
| Woodline Partners LP trimmed | 8,000,013 | $167M | 4.2% | 2026-Q1 |
| Nextech Invest, Ltd. | 7,266,081 | $152M | 3.8% | 2026-Q1 |
| TRV GP IV, LLC trimmed | 6,374,574 | $133M | 3.3% | 2026-Q1 |
| Siren, L.L.C. trimmed | 5,657,105 | $118M | 3.0% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 5,161,431 | $108M | 2.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 5,076,392 | $106M | 2.7% | 2026-Q1 |
| STATE STREET CORP trimmed | 4,651,894 | $97M | 2.4% | 2026-Q1 |
| DEERFIELD MANAGEMENT COMPANY, L.P. added | 4,146,813 | $87M | 2.2% | 2026-Q1 |
| Paradigm Biocapital Advisors LP added | 4,009,679 | $84M | 2.1% | 2026-Q1 |
| Holocene Advisors, LP new | 3,932,603 | $82M | 2.1% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 3,826,659 | $80M | 2.0% | 2026-Q1 |
| Logos Global Management LP trimmed | 3,000,000 | $63M | 1.6% | 2026-Q1 |
| Deep Track Capital, LP added | 2,750,000 | $58M | 1.4% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 2,675,777 | $56M | 1.4% | 2026-Q1 |
| Caligan Partners LP trimmed | 2,408,798 | $50M | 1.3% | 2026-Q1 |
| Bellevue Group AG trimmed | 2,400,000 | $50M | 1.3% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 2,394,972 | $50M | 1.3% | 2026-Q1 |
| Vivo Capital, LLC | 2,154,780 | $45M | 1.1% | 2026-Q1 |
| MORGAN STANLEY added | 1,477,488 | $31M | 0.8% | 2026-Q1 |
| Cormorant Asset Management, LP trimmed | 1,425,000 | $30M | 0.7% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 1,296,283 | $27M | 0.7% | 2026-Q1 |
| Candriam S.C.A. added | 1,269,246 | $27M | 0.7% | 2026-Q1 |
| Nantahala Capital Management, LLC trimmed | 1,250,452 | $26M | 0.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 901,466 | $19M | 0.5% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 889,400 | $19M | 0.5% | 2026-Q1 |
| NORTHERN TRUST CORP added | 862,940 | $18M | 0.5% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 838,675 | $18M | 0.4% | 2026-Q1 |
| PERCEPTIVE ADVISORS LLC added | 808,153 | $17M | 0.4% | 2026-Q1 |
| BESSEMER GROUP INC | 708,398 | $15M | 0.4% | 2026-Q1 |
| ArrowMark Colorado Holdings LLC | 708,385 | $15M | 0.4% | 2026-Q1 |
| UBS Group AG trimmed | 699,352 | $15M | 0.4% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 662,921 | $14M | 0.3% | 2026-Q1 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 571,350 | $12M | 0.3% | 2026-Q1 |
| Point72 Asset Management, L.P. trimmed | 533,937 | $11M | 0.3% | 2026-Q1 |
| Invesco Ltd. added | 514,189 | $11M | 0.3% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 506,158 | $11M | 0.3% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 489,348 | $10M | 0.3% | 2026-Q1 |
| Integral Health Asset Management, LLC added | 450,000 | $9M | 0.2% | 2026-Q1 |
| Soleus Capital Management, L.P. added | 450,000 | $9M | 0.2% | 2026-Q1 |
| ACUTA CAPITAL PARTNERS, LLC added | 441,831 | $9M | 0.2% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 440,015 | $9M | 0.2% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 425,644 | $9M | 0.2% | 2026-Q1 |
| PFM Health Sciences, LP new | 406,245 | $8M | 0.2% | 2026-Q1 |
| Sofinnova Investments, Inc. new | 395,081 | $8M | 0.2% | 2026-Q1 |
| Rock Springs Capital Management LP | 386,915 | $8M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 360,818 | $8M | 0.2% | 2026-Q1 |
| Connor, Clark & Lunn Investment Management Ltd. added | 355,229 | $7M | 0.2% | 2026-Q1 |
| Mass General Brigham, Inc | 354,192 | $7M | 0.2% | 2026-Q1 |
| SPHERA FUNDS MANAGEMENT LTD. trimmed | 343,563 | $7M | 0.2% | 2026-Q1 |
| CONGRESS ASSET MANAGEMENT CO added | 341,361 | $7M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 327,144 | $7M | 0.2% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 318,458 | $7M | 0.2% | 2026-Q1 |
| DV Trading LLC new | 300,648 | $6M | 0.2% | 2026-Q1 |
| Seven Fleet Capital Management LP added | 300,648 | $6M | 0.2% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP added | 275,495 | $6M | 0.1% | 2026-Q1 |
| Parkman Healthcare Partners LLC added | 266,127 | $6M | 0.1% | 2026-Q1 |
| KVP Capital Advisors, LP new | 230,264 | $5M | 0.1% | 2026-Q1 |
| Cinctive Capital Management LP new | 222,111 | $5M | 0.1% | 2026-Q1 |
| STEMPOINT CAPITAL LP trimmed | 200,919 | $4M | 0.1% | 2026-Q1 |
| TRV GP VI, LLC | 194,174 | $4M | 0.1% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 207,504 | $4M | 0.1% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 179,423 | $4M | 0.1% | 2026-Q1 |
| Squarepoint Ops LLC added | 178,915 | $4M | 0.1% | 2026-Q1 |
| VOYA INVESTMENT MANAGEMENT LLC added | 175,469 | $4M | 0.1% | 2026-Q1 |
| Atle Fund Management AB new | 29,915 | $4M | 0.1% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 173,132 | $4M | 0.1% | 2026-Q1 |
| Informed Momentum Co LLC trimmed | 167,998 | $4M | 0.1% | 2026-Q1 |
| Fisher Asset Management, LLC trimmed | 162,399 | $3M | 0.1% | 2026-Q1 |
| FRED ALGER MANAGEMENT, LLC trimmed | 150,070 | $3M | 0.1% | 2026-Q1 |
| ALGERT GLOBAL LLC added | 145,640 | $3M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 126,603 | $3M | 0.1% | 2026-Q1 |
| Schonfeld Strategic Advisors LLC added | 120,689 | $3M | 0.1% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 108,218 | $2M | 0.1% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 104,974 | $2M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC trimmed | 104,960 | $2M | 0.1% | 2026-Q1 |
| HighVista Strategies LLC new | 104,193 | $2M | 0.1% | 2026-Q1 |
| TD Asset Management Inc added | 102,600 | $2M | 0.1% | 2026-Q1 |
| EcoR1 Capital, LLC | 10,630,736 | $89M | 2.2% | 2025-Q3 stale |
| VANGUARD GROUP INC added | 6,008,371 | $53M | 1.3% | 2025-Q4 stale |
| GILEAD SCIENCES, INC. | 4,854,443 | $41M | 1.0% | 2025-Q3 stale |
| SUVRETTA CAPITAL MANAGEMENT, LLC new | 2,662,227 | $24M | 0.6% | 2025-Q4 stale |
| RA CAPITAL MANAGEMENT, L.P. | 2,000,000 | $17M | 0.4% | 2025-Q3 stale |
| Commodore Capital LP | 1,500,000 | $13M | 0.3% | 2025-Q3 stale |
| D. E. Shaw & Co., Inc. added | 1,025,553 | $9M | 0.2% | 2025-Q4 stale |
| Affinity Asset Advisors, LLC added | 1,000,000 | $9M | 0.2% | 2025-Q4 stale |
| Bain Capital Life Sciences Investors, LLC trimmed | 653,493 | $6M | 0.1% | 2025-Q4 stale |
| Avoro Capital Advisors LLC trimmed | 545,000 | $5M | 0.1% | 2025-Q3 stale |
| MARSHALL WACE, LLP trimmed | 329,231 | $3M | 0.1% | 2025-Q4 stale |
| Qube Research & Technologies Ltd new | 318,676 | $3M | 0.1% | 2025-Q4 stale |
| GREAT LAKES ADVISORS, LLC trimmed | 294,303 | $3M | 0.1% | 2025-Q4 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 255,127 | $2M | 0.1% | 2025-Q4 stale |
| READYSTATE ASSET MANAGEMENT LP trimmed | 245,109 | $2M | 0.1% | 2025-Q3 stale |
| Cubist Systematic Strategies, LLC added | 240,655 | $2M | 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.