Who owns TFX (TFX)
Which tracked institutional funds hold TFX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See TFX 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
85 tracked funds added or opened TFX while 119 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
TFX’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.1pp gap the other way — the median holder sizes TFX more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in TFX 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 366 tracked filers holding TFX, 185 increased or opened the position and 238 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 TFX 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 35
- VANGUARD PORTFOLIO MANAGEMENT LLC$292M
- VANGUARD CAPITAL MANAGEMENT LLC$237M
- BAUPOST GROUP LLC/MA$191M
- Sessa Capital IM, L.P.$183M
- River Road Asset Management, LLC$110M
- Irenic Capital Management LP$104M
Full exits 48
- VANGUARD GROUP INC$571M
- MANGROVE PARTNERS IM, LLC$31M
- Integral Health Asset Management, LLC$31M
- HBK INVESTMENTS L P$23M
- Soleus Capital Management, L.P.$23M
- Qube Research & Technologies Ltd$21M
Largest adds
- CITADEL ADVISORS LLC$132M
- T. Rowe Price Investment Management, Inc.$112M
- FULLER & THALER ASSET MANAGEMENT, INC.$78M
- PZENA INVESTMENT MANAGEMENT LLC$37M
- BALYASNY ASSET MANAGEMENT L.P.$37M
- Gumshoe Capital Management LLC$20M
Largest trims
- MORGAN STANLEY$241M
- AQR CAPITAL MANAGEMENT LLC$218M
- Thrivent Financial for Lutherans$91M
- Boston Partners$57M
- BlackRock, Inc.$51M
- Wolf Hill Capital Management, LP$36M
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 5,023,075 | $601M | 9.3% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC added | 4,291,311 | $513M | 7.9% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 3,836,207 | $459M | 7.1% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 2,438,183 | $292M | 4.5% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,983,824 | $237M | 3.7% | 2026-Q1 |
| BAUPOST GROUP LLC/MA new | 1,595,000 | $191M | 2.9% | 2026-Q1 |
| Sessa Capital IM, L.P. new | 1,526,228 | $183M | 2.8% | 2026-Q1 |
| STATE STREET CORP added | 1,502,857 | $180M | 2.8% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,363,950 | $163M | 2.5% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 1,171,096 | $140M | 2.2% | 2026-Q1 |
| COOKE & BIELER LP trimmed | 1,142,674 | $137M | 2.1% | 2026-Q1 |
| ABRAMS BISON INVESTMENTS, LLC added | 1,000,000 | $120M | 1.8% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 998,420 | $119M | 1.8% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 997,144 | $119M | 1.8% | 2026-Q1 |
| River Road Asset Management, LLC new | 922,116 | $110M | 1.7% | 2026-Q1 |
| Irenic Capital Management LP new | 870,000 | $104M | 1.6% | 2026-Q1 |
| PZENA INVESTMENT MANAGEMENT LLC added | 699,125 | $84M | 1.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 682,058 | $82M | 1.3% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 677,308 | $81M | 1.3% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 638,761 | $76M | 1.2% | 2026-Q1 |
| NORGES BANK added | 545,471 | $75M | 1.2% | 2026-Q1 |
| MORGAN STANLEY trimmed | 536,179 | $64M | 1.0% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 519,785 | $62M | 1.0% | 2026-Q1 |
| Capital International Investors | 455,825 | $55M | 0.8% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 445,958 | $53M | 0.8% | 2026-Q1 |
| Invenomic Capital Management LP added | 436,125 | $52M | 0.8% | 2026-Q1 |
| Gumshoe Capital Management LLC added | 426,731 | $51M | 0.8% | 2026-Q1 |
| Holocene Advisors, LP added | 415,335 | $50M | 0.8% | 2026-Q1 |
| BALYASNY ASSET MANAGEMENT L.P. added | 401,417 | $48M | 0.7% | 2026-Q1 |
| Newtyn Management, LLC new | 400,000 | $48M | 0.7% | 2026-Q1 |
| DIAMOND HILL CAPITAL MANAGEMENT INC trimmed | 342,453 | $41M | 0.6% | 2026-Q1 |
| NORTHERN TRUST CORP added | 296,721 | $35M | 0.5% | 2026-Q1 |
| Freestone Grove Partners LP added | 296,487 | $35M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 286,945 | $34M | 0.5% | 2026-Q1 |
| BOONE CAPITAL MANAGEMENT LLC new | 278,792 | $33M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 275,227 | $33M | 0.5% | 2026-Q1 |
| Bank of New York Mellon Corp added | 263,101 | $31M | 0.5% | 2026-Q1 |
| WEDGE CAPITAL MANAGEMENT L L P/NC trimmed | 251,717 | $30M | 0.5% | 2026-Q1 |
| TD Asset Management Inc trimmed | 249,000 | $30M | 0.5% | 2026-Q1 |
| HEARTLAND ADVISORS INC added | 215,998 | $26M | 0.4% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 214,193 | $26M | 0.4% | 2026-Q1 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 202,524 | $24M | 0.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 198,590 | $24M | 0.4% | 2026-Q1 |
| UBS Group AG trimmed | 197,347 | $24M | 0.4% | 2026-Q1 |
| Public Sector Pension Investment Board | 193,002 | $23M | 0.4% | 2026-Q1 |
| Western Standard LLC new | 184,817 | $22M | 0.3% | 2026-Q1 |
| JANE STREET GROUP, LLC trimmed | 173,278 | $21M | 0.3% | 2026-Q1 |
| Pictet Asset Management Holding SA added | 165,842 | $20M | 0.3% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC added | 146,099 | $17M | 0.3% | 2026-Q1 |
| Marathon Asset Management Ltd added | 143,754 | $17M | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 143,443 | $17M | 0.3% | 2026-Q1 |
| GMT Capital Corp new | 134,600 | $16M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 134,338 | $16M | 0.2% | 2026-Q1 |
| Park West Asset Management LLC new | 129,400 | $15M | 0.2% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP added | 126,268 | $15M | 0.2% | 2026-Q1 |
| Tejara Capital Ltd added | 121,300 | $15M | 0.2% | 2026-Q1 |
| Soapstone Management L.P. new | 118,750 | $14M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 117,665 | $14M | 0.2% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 116,597 | $14M | 0.2% | 2026-Q1 |
| ExodusPoint Capital Management, LP added | 113,052 | $14M | 0.2% | 2026-Q1 |
| Rodgers Brothers Inc. added | 108,333 | $13M | 0.2% | 2026-Q1 |
| SPEECE THORSON CAPITAL GROUP INC added | 106,277 | $13M | 0.2% | 2026-Q1 |
| MOORE CAPITAL MANAGEMENT, LP trimmed | 104,650 | $13M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 103,863 | $12M | 0.2% | 2026-Q1 |
| CITIGROUP INC added | 100,785 | $12M | 0.2% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 95,268 | $11M | 0.2% | 2026-Q1 |
| Sio Capital Management, LLC added | 94,800 | $11M | 0.2% | 2026-Q1 |
| Wolf Hill Capital Management, LP trimmed | 94,464 | $11M | 0.2% | 2026-Q1 |
| Invesco Ltd. trimmed | 92,847 | $11M | 0.2% | 2026-Q1 |
| ArrowMark Colorado Holdings LLC added | 87,400 | $10M | 0.2% | 2026-Q1 |
| Swiss National Bank | 87,200 | $10M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 86,809 | $10M | 0.2% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 75,468 | $9M | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO trimmed | 73,065 | $9M | 0.1% | 2026-Q1 |
| FIFTH THIRD BANCORP added | 68,144 | $8M | 0.1% | 2026-Q1 |
| Nuveen, LLC added | 65,898 | $8M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 4,675,013 | $571M | 8.8% | 2025-Q4 stale |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 610,933 | $75M | 1.2% | 2025-Q3 stale |
| J. Goldman & Co LP added | 339,397 | $42M | 0.6% | 2025-Q3 stale |
| Nearwater Capital Markets, Ltd new | 290,000 | $34M | 0.5% | 2025-Q2 stale |
| MANGROVE PARTNERS IM, LLC new | 256,726 | $31M | 0.5% | 2025-Q4 stale |
| Integral Health Asset Management, LLC added | 250,000 | $31M | 0.5% | 2025-Q4 stale |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC trimmed | 253,013 | $30M | 0.5% | 2025-Q2 stale |
| HBK INVESTMENTS L P new | 192,372 | $23M | 0.4% | 2025-Q4 stale |
| Soleus Capital Management, L.P. new | 190,000 | $23M | 0.4% | 2025-Q4 stale |
| Qube Research & Technologies Ltd trimmed | 174,826 | $21M | 0.3% | 2025-Q4 stale |
| Boston Trust Walden Corp trimmed | 131,364 | $18M | 0.3% | 2025-Q1 stale |
| DKRT Investments Corp. | 130,000 | $16M | 0.2% | 2025-Q3 stale |
| WESTWOOD HOLDINGS GROUP INC trimmed | 130,069 | $16M | 0.2% | 2025-Q4 stale |
| GREENHAVEN ASSOCIATES INC new | 122,079 | $15M | 0.2% | 2025-Q4 stale |
| Empyrean Capital Partners, LP new | 118,000 | $14M | 0.2% | 2025-Q4 stale |
| Woodline Partners LP trimmed | 104,891 | $13M | 0.2% | 2025-Q4 stale |
| PFM Health Sciences, LP trimmed | 102,395 | $12M | 0.2% | 2025-Q4 stale |
| KETTLE HILL CAPITAL MANAGEMENT, LLC new | 93,768 | $11M | 0.2% | 2025-Q2 stale |
| IEQ CAPITAL, LLC trimmed | 89,939 | $11M | 0.2% | 2025-Q4 stale |
| TWINBEECH CAPITAL LP added | 90,332 | $11M | 0.2% | 2025-Q2 stale |
| Goodman Financial Corp added | 86,210 | $11M | 0.2% | 2025-Q3 stale |
| First Eagle Investment Management, LLC added | 84,300 | $10M | 0.2% | 2025-Q4 stale |
| TUDOR INVESTMENT CORP ET AL added | 82,451 | $10M | 0.2% | 2025-Q2 stale |
| CAPITAL FUND MANAGEMENT S.A. trimmed | 65,023 | $8M | 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.