Who owns QuidelOrtho Corporation (QDEL)
Which tracked institutional funds hold QDEL, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See QDEL company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-22). 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 QDEL is one-sided between 2025-Q4 and 2026-Q1: 27 added or opened and 101 trimmed or exited — on balance reducing.
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
QDEL’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes QDEL more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in QDEL 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 237 tracked filers holding QDEL, 129 increased or opened the position and 122 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
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 QDEL 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 16
- VANGUARD PORTFOLIO MANAGEMENT LLC$66M
- VANGUARD CAPITAL MANAGEMENT LLC$50M
- VANGUARD FIDUCIARY TRUST CO$7M
- Sio Capital Management, LLC$6M
- TUDOR INVESTMENT CORP ET AL$4M
- XTX Topco Ltd$3M
Full exits 16
- VANGUARD GROUP INC$200M
- ArrowMark Colorado Holdings LLC$12M
- Balyasny Asset Management L.P.$10M
- KORNITZER CAPITAL MANAGEMENT INC /KS$6M
- ORACLE INVESTMENT MANAGEMENT INC$3M
- Campbell & CO Investment Adviser LLC$2M
Largest adds
- NORGES BANK$17M
- Susquehanna Portfolio Strategies, LLC$3M
- Gem Investment Advisors, LLC$2M
- GAGNON SECURITIES LLC$2M
- Skylands Capital, LLC$2M
- Point72 Asset Management, L.P.$2M
Largest trims
- BlackRock, Inc.$124M
- Invesco Ltd.$54M
- Rubric Capital Management LP$54M
- T. Rowe Price Investment Management, Inc.$49M
- FMR LLC$48M
- STATE STREET CORP$31M
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. added | 10,449,127 | $172M | 9.9% | 2026-Q1 |
| FMR LLC added | 6,525,859 | $107M | 6.2% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 5,629,965 | $93M | 5.3% | 2026-Q1 |
| Newtyn Management, LLC added | 4,558,472 | $75M | 4.3% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 4,031,768 | $66M | 3.8% | 2026-Q1 |
| Rubric Capital Management LP trimmed | 3,306,281 | $54M | 3.1% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 3,052,710 | $50M | 2.9% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 3,048,768 | $50M | 2.9% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 2,856,132 | $47M | 2.7% | 2026-Q1 |
| STATE STREET CORP added | 2,786,621 | $46M | 2.6% | 2026-Q1 |
| Invesco Ltd. trimmed | 2,768,846 | $45M | 2.6% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 2,412,411 | $40M | 2.3% | 2026-Q1 |
| FRONTIER CAPITAL MANAGEMENT CO LLC added | 1,752,613 | $29M | 1.7% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 1,715,199 | $28M | 1.6% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC added | 1,543,410 | $25M | 1.5% | 2026-Q1 |
| NEUBERGER BERMAN GROUP LLC added | 1,530,414 | $25M | 1.4% | 2026-Q1 |
| PARADIGM CAPITAL MANAGEMENT INC/NY added | 1,525,900 | $25M | 1.4% | 2026-Q1 |
| PRIVATE MANAGEMENT GROUP INC added | 1,384,769 | $23M | 1.3% | 2026-Q1 |
| NORGES BANK added | 525,150 | $18M | 1.1% | 2026-Q1 |
| RICE HALL JAMES & ASSOCIATES, LLC added | 1,026,420 | $17M | 1.0% | 2026-Q1 |
| MORGAN STANLEY trimmed | 1,023,510 | $17M | 1.0% | 2026-Q1 |
| Allianz Asset Management GmbH added | 1,006,337 | $17M | 1.0% | 2026-Q1 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 892,407 | $15M | 0.8% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 830,059 | $14M | 0.8% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 762,169 | $13M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 689,794 | $11M | 0.7% | 2026-Q1 |
| UBS Group AG added | 542,002 | $9M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 454,514 | $7M | 0.4% | 2026-Q1 |
| Goodman Financial Corp added | 437,157 | $7M | 0.4% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 427,645 | $7M | 0.4% | 2026-Q1 |
| Aristotle Capital Boston, LLC added | 420,402 | $7M | 0.4% | 2026-Q1 |
| THOMPSON SIEGEL & WALMSLEY LLC added | 410,234 | $7M | 0.4% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC added | 409,427 | $7M | 0.4% | 2026-Q1 |
| GAGNON SECURITIES LLC added | 403,325 | $7M | 0.4% | 2026-Q1 |
| Sio Capital Management, LLC new | 359,011 | $6M | 0.3% | 2026-Q1 |
| Skylands Capital, LLC added | 341,554 | $6M | 0.3% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 331,184 | $5M | 0.3% | 2026-Q1 |
| Lightrock Netherlands B.V. trimmed | 314,547 | $5M | 0.3% | 2026-Q1 |
| Gem Investment Advisors, LLC added | 296,665 | $5M | 0.3% | 2026-Q1 |
| Bayberry Capital Partners LP trimmed | 282,600 | $5M | 0.3% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 282,217 | $5M | 0.3% | 2026-Q1 |
| D. E. Shaw & Co., Inc. trimmed | 274,699 | $5M | 0.3% | 2026-Q1 |
| SEI INVESTMENTS CO added | 269,178 | $4M | 0.3% | 2026-Q1 |
| TD Asset Management Inc trimmed | 261,268 | $4M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC added | 254,497 | $4M | 0.2% | 2026-Q1 |
| Empowered Funds, LLC added | 254,217 | $4M | 0.2% | 2026-Q1 |
| GAMCO INVESTORS, INC. ET AL added | 253,900 | $4M | 0.2% | 2026-Q1 |
| Stanley Capital Management, LLC trimmed | 252,000 | $4M | 0.2% | 2026-Q1 |
| Public Sector Pension Investment Board added | 243,017 | $4M | 0.2% | 2026-Q1 |
| Monaco Asset Management SAM added | 242,595 | $4M | 0.2% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 234,509 | $4M | 0.2% | 2026-Q1 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 225,853 | $4M | 0.2% | 2026-Q1 |
| Nuveen, LLC added | 224,156 | $4M | 0.2% | 2026-Q1 |
| Tejara Capital Ltd added | 216,090 | $4M | 0.2% | 2026-Q1 |
| Susquehanna Portfolio Strategies, LLC added | 213,637 | $4M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 196,961 | $3M | 0.2% | 2026-Q1 |
| SaddleRock Capital Management LLC trimmed | 196,141 | $3M | 0.2% | 2026-Q1 |
| Leeward Investments, LLC - MA trimmed | 186,851 | $3M | 0.2% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 172,212 | $3M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS added | 170,816 | $3M | 0.2% | 2026-Q1 |
| GABELLI FUNDS LLC trimmed | 166,400 | $3M | 0.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 163,484 | $3M | 0.2% | 2026-Q1 |
| XTX Topco Ltd added | 161,643 | $3M | 0.2% | 2026-Q1 |
| BEACONLIGHT CAPITAL, LLC trimmed | 152,057 | $2M | 0.1% | 2026-Q1 |
| Quantinno Capital Management LP trimmed | 150,646 | $2M | 0.1% | 2026-Q1 |
| Ballast Asset Management, LP added | 145,960 | $2M | 0.1% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 80,843 | $2M | 0.1% | 2026-Q1 |
| Swiss National Bank | 133,940 | $2M | 0.1% | 2026-Q1 |
| Phocas Financial Corp. trimmed | 132,882 | $2M | 0.1% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 136,736 | $2M | 0.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 126,973 | $2M | 0.1% | 2026-Q1 |
| MARSHALL WACE, LLP added | 126,533 | $2M | 0.1% | 2026-Q1 |
| Edgestream Partners, L.P. added | 117,888 | $2M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 6,998,166 | $200M | 11.5% | 2025-Q4 stale |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 1,656,218 | $49M | 2.8% | 2025-Q3 stale |
| Estuary Capital Management LP new | 970,886 | $29M | 1.6% | 2025-Q3 stale |
| GOLDENTREE ASSET MANAGEMENT LP added | 570,966 | $20M | 1.1% | 2025-Q1 stale |
| ArrowMark Colorado Holdings LLC trimmed | 422,510 | $12M | 0.7% | 2025-Q4 stale |
| Point72 (DIFC) Ltd added | 401,642 | $12M | 0.7% | 2025-Q3 stale |
| Engine Capital Management, LP | 331,597 | $12M | 0.7% | 2025-Q1 stale |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. added | 393,319 | $12M | 0.7% | 2025-Q3 stale |
| Balyasny Asset Management L.P. added | 348,490 | $10M | 0.6% | 2025-Q4 stale |
| Burkehill Global Management, LP | 200,000 | $7M | 0.4% | 2025-Q1 stale |
| KORNITZER CAPITAL MANAGEMENT INC /KS added | 205,020 | $6M | 0.3% | 2025-Q4 stale |
| CITADEL ADVISORS LLC added | 169,010 | $5M | 0.3% | 2025-Q3 stale |
| Gotham Asset Management, LLC trimmed | 163,417 | $5M | 0.3% | 2025-Q3 stale |
| IEQ CAPITAL, LLC trimmed | 162,375 | $5M | 0.3% | 2025-Q2 stale |
| Jump Financial, LLC added | 114,330 | $4M | 0.2% | 2025-Q1 stale |
| Aquatic Capital Management LLC added | 123,825 | $4M | 0.2% | 2025-Q2 stale |
| ORACLE INVESTMENT MANAGEMENT INC | 118,291 | $3M | 0.2% | 2025-Q4 stale |
| AXA Investment Managers S.A. new | 111,551 | $3M | 0.2% | 2025-Q3 stale |
| California Public Employees Retirement System added | 95,412 | $3M | 0.2% | 2025-Q2 stale |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ added | 92,542 | $3M | 0.2% | 2025-Q3 stale |
| NORDEA INVESTMENT MANAGEMENT AB added | 88,187 | $3M | 0.2% | 2025-Q2 stale |
| ROYCE & ASSOCIATES LP trimmed | 66,391 | $2M | 0.1% | 2025-Q1 stale |
| ESSEX INVESTMENT MANAGEMENT CO LLC trimmed | 63,315 | $2M | 0.1% | 2025-Q1 stale |
| Campbell & CO Investment Adviser LLC added | 77,189 | $2M | 0.1% | 2025-Q4 stale |
| AXA S.A. added | 75,705 | $2M | 0.1% | 2025-Q2 stale |
| Soleus Capital Management, L.P. trimmed | 75,000 | $2M | 0.1% | 2025-Q4 stale |
| TWINBEECH CAPITAL LP added | 71,480 | $2M | 0.1% | 2025-Q2 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.