QUIDELORTHO CORP QDEL
COM · Common Stock · CUSIP 219798105 · ISIN US2197981051
- SectorHealth care
- IndustryIn Vitro & In Vivo Diagnostic Substances
- HeadquartersSan Diego, CA
- Founded1979
- Websitequidel.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($8.2m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $28.80. Options: 11 managers hold calls ($16.9m notional), 9 hold puts ($11.0m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 313 |
| Q4 2022 | 346 |
| Q1 2023 | 332 |
| Q2 2023 | 313 |
| Q3 2023 | 305 |
| Q4 2023 | 306 |
| Q1 2024 | 271 |
| Q2 2024 | 261 |
| Q3 2024 | 262 |
| Q4 2024 | 274 |
| Q1 2025 | 266 |
| Q2 2025 | 263 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 114 | 178 |
| Q4 2023 | 137 | 142 |
| Q1 2024 | 124 | 166 |
| Q2 2024 | 143 | 130 |
| Q3 2024 | 152 | 122 |
| Q4 2024 | 151 | 116 |
| Q1 2025 | 131 | 126 |
| Q2 2025 | 145 | 128 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $15.0m | $6.7m | 0.45 |
| Q4 2024 | $13.9m | $12.9m | 0.93 |
| Q1 2025 | $13.7m | $11.5m | 0.84 |
| Q2 2025 | $16.9m | $11.0m | 0.65 |
Biggest buyers
| BlackRock, Inc. | Added | +2.0m |
| FULLER & THALER ASSET MANAGEMENT, INC. | New | +1.7m |
| FMR LLC | Added | +1.3m |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | New | +1.1m |
| VANGUARD GROUP INC | Added | +1.0m |
| DIMENSIONAL FUND ADVISORS LP | Added | +691.4k |
| D. E. Shaw & Co., Inc. | Added | +663.6k |
| Assenagon Asset Management S.A. | Added | +629.2k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +529.8k |
| STATE STREET CORP | Added | +510.3k |
Biggest sellers
| Invesco Ltd. | Reduced | -2.3m |
| Rubric Capital Management LP | Reduced | -1.5m |
| ArrowMark Colorado Holdings LLC | Reduced | -928.5k |
| AQR CAPITAL MANAGEMENT LLC | Reduced | -838.3k |
| JPMORGAN CHASE & CO | Reduced | -702.0k |
| CITADEL ADVISORS LLC | Reduced | -602.9k |
| GOLDENTREE ASSET MANAGEMENT LP | Sold out | -571.0k |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | Reduced | -433.5k |
| Bayberry Capital Partners LP | Reduced | -335.8k |
| Engine Capital Management, LP | Sold out | -331.6k |
Biggest calls
| Bayberry Capital Partners LP | New | $8.6m300.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $2.6m89.5k shares |
| JANE STREET GROUP, LLC | Added | $2.2m75.5k shares |
| Walleye Trading LLC | Added | $1.2m41.1k shares |
| CITADEL ADVISORS LLC | Added | $616.7k21.4k shares |
| Cubist Systematic Strategies, LLC | New | $585.0k20.3k shares |
| IMC-Chicago, LLC | Added | $513.0k17.8k shares |
| Walleye Capital LLC | New | $250.7k8.7k shares |
| GROUP ONE TRADING LLC | Reduced | $213.3k7.4k shares |
| SIMPLEX TRADING, LLC | Reduced | $92.0k3.2k shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $9.3m322.3k shares |
| IMC-Chicago, LLC | Added | $587.9k20.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $440.9k15.3k shares |
| Cubist Systematic Strategies, LLC | New | $386.2k13.4k shares |
| Walleye Capital LLC | New | $152.7k5.3k shares |
| Walleye Trading LLC | Reduced | $69.2k2.4k shares |
| GROUP ONE TRADING LLC | Added | $37.5k1.3k shares |
| SIMPLEX TRADING, LLC | Reduced | $8.0k300 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +2.3 pts · filed 2025-07-17 | 14.8% |
| Newtyn Management, LLC 13G · passive investor +1.9 pts · filed 2026-08-14 | 9.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 6.0% |
| FMR LLC 13G · institution -5.7 pts · filed 2026-10-07 | 5.8% |
| Rubric Capital Management LP 13G · institution -1.3 pts · filed 2026-02-13 | 5.6% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
| Invesco Ltd. 13G · institution +0.5 pts · filed 2026-08-13 | 5.1% |
Fell to 5% or below in the last year: T. Rowe Price Investment Management, Inc. (2.6%, 2026-08-14), Neuberger Berman Group LLC (4.9%, 2026-08-05), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 1 | $99.7k | 0 | — | — |
| Q2 2024 | 0 | — | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 1 | $249.9k | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| T. Rowe Price Investment Management, Inc. 0.20% of their portfolio | 11.1m $320.9m | Reduced -311.0k |
| BlackRock, Inc. 0.01% of their portfolio | 10.2m $294.6m | Added +2.0m |
| VANGUARD GROUP INC 0.00% of their portfolio | 7.8m $224.7m | Added +1.0m |
| Rubric Capital Management LP 2.15% of their portfolio | 4.6m $133.7m | Reduced -1.5m |
| STATE STREET CORP 0.00% of their portfolio | 2.7m $77.8m | Added +510.3k |
| FMR LLC 0.00% of their portfolio | 2.6m $75.4m | Added +1.3m |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.5m $72.3m | Added +691.4k |
| D. E. Shaw & Co., Inc. 0.06% of their portfolio | 2.0m $57.8m | Added +663.6k |
| AMERICAN CENTURY COMPANIES INC 0.03% of their portfolio | 1.9m $55.2m | Added +327.0k |
| AQR CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 1.8m $52.4m | Reduced -838.3k |
| Newtyn Management, LLC 7.45% of their portfolio | 1.7m $49.2m | Added +490.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 1.7m $48.4m | Added +529.8k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.17% of their portfolio | 1.7m $47.6m | New |
| Invesco Ltd. 0.01% of their portfolio | 1.6m $44.8m | Reduced -2.3m |
| MORGAN STANLEY 0.00% of their portfolio | 1.5m $42.5m | Added +64.0k |
| SEGALL BRYANT & HAMILL, LLC 0.53% of their portfolio | 1.3m $37.5m | Added +11.5k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.20% of their portfolio | 1.1m $30.3m | New |
| ArrowMark Colorado Holdings LLC 0.50% of their portfolio | 964.3k $27.8m | Reduced -928.5k |
| Assenagon Asset Management S.A. 0.04% of their portfolio | 941.4k $27.1m | Added +629.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 910.6k $26.2m | Added +81.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 871.8k $25.1m | Reduced -702.0k |
| PARADIGM CAPITAL MANAGEMENT INC/NY 1.05% of their portfolio | 746.3k $21.5m | Added +276.8k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.20% of their portfolio | 738.7k $21.3m | Added +201.7k |
| PRIVATE MANAGEMENT GROUP INC 0.67% of their portfolio | 720.6k $20.8m | Added +85.3k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 719.1k $20.7m | Added +283.3k |
| TD Asset Management Inc 0.01% of their portfolio | 491.9k $14.2m | Reduced -120.0k |
| Gotham Asset Management, LLC 0.08% of their portfolio | 480.5k $13.8m | Added +265.2k |
| Lightrock Netherlands B.V. 3.15% of their portfolio | 466.0k $11.4m | Added +101.4k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 428.4k $12.3m | Added +12.7k |
| UBS Group AG 0.00% of their portfolio | 391.2k $11.3m | Added +79.3k |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. 0.11% of their portfolio | 386.7k $11.1m | Reduced -433.5k |
| Parkman Healthcare Partners LLC 1.29% of their portfolio | 386.6k $11.1m | Added +203.0k |
| Stanley Capital Management, LLC 1.83% of their portfolio | 377.0k $10.9m | Reduced -140.5k |
| Goodman Financial Corp 2.18% of their portfolio | 376.2k $10.8m | Added +52.9k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 374.2k $10.8m | Added +15.3k |
| THOMPSON SIEGEL & WALMSLEY LLC 0.18% of their portfolio | 370.9k $10.7m | Added +46.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 355.2k $10.2m | Reduced -72.8k |
| BARCLAYS PLC 0.00% of their portfolio | 336.1k $9.7m | Added +319.5k |
| Point72 (DIFC) Ltd 0.77% of their portfolio | 335.3k $9.7m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 328.8k $9.5m | Added +1.8k |
| NORGES BANK 0.00% of their portfolio | 321.6k $9.3m | Reduced -203.5k |
| NEUBERGER BERMAN GROUP LLC 0.01% of their portfolio | 293.9k $8.5m | Added +15.3k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 266.3k $7.7m | Added +37.9k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 254.0k $7.3m | Reduced -2.5k |
| Clearline Capital LP 0.61% of their portfolio | 240.5k $6.9m | Added +119.2k |
| Aristotle Capital Boston, LLC 0.35% of their portfolio | 235.4k $6.8m | Reduced -16.6k |
| Nuveen, LLC 0.00% of their portfolio | 235.3k $6.8m | Added +13.6k |
| Allianz Asset Management GmbH 0.01% of their portfolio | 233.3k $6.7m | Added +155.7k |
| Public Sector Pension Investment Board 0.03% of their portfolio | 225.9k $6.5m | Added +16.9k |
| SYSTEMATIC FINANCIAL MANAGEMENT LP 0.17% of their portfolio | 225.1k $6.5m | Added +61.7k |
| GAMCO INVESTORS, INC. ET AL 0.06% of their portfolio | 223.8k $6.4m | Reduced -6.4k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.12% of their portfolio | 204.9k $5.9m | Unchanged |
| Leeward Investments, LLC - MA 0.30% of their portfolio | 197.1k $5.7m | Reduced -8.9k |
| Legal & General Group Plc 0.00% of their portfolio | 196.8k $5.7m | Added +10.7k |
| Bayberry Capital Partners LP 1.73% of their portfolio | 182.2k $5.2m | Reduced -335.8k |
| Soleus Capital Management, L.P. 0.35% of their portfolio | 174.0k $5.0m | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 173.9k $5.0m | Added +28.3k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 173.3k $5.0m | Added +44.2k |
| IEQ CAPITAL, LLC 0.03% of their portfolio | 162.4k $4.7m | Reduced -73.9k |
| Empowered Funds, LLC 0.05% of their portfolio | 152.1k $4.4m | New |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.10% of their portfolio | 150.2k $4.3m | New |
| BEACONLIGHT CAPITAL, LLC 2.23% of their portfolio | 132.4k $3.8m | Reduced -209.7k |
| GABELLI FUNDS LLC 0.03% of their portfolio | 132.2k $3.8m | Reduced -13.3k |
| Swiss National Bank 0.00% of their portfolio | 128.8k $3.7m | Reduced -1.5k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 126.4k $3.6m | Added +92.0k |
| Aquatic Capital Management LLC 0.07% of their portfolio | 123.8k $3.6m | New |
| ORACLE INVESTMENT MANAGEMENT INC 2.95% of their portfolio | 118.3k $3.4m | Unchanged |
| Phocas Financial Corp. 0.47% of their portfolio | 114.2k $3.3m | Added +17 |
| SEI INVESTMENTS CO 0.00% of their portfolio | 102.3k $2.9m | Reduced -7.1k |
| California Public Employees Retirement System 0.00% of their portfolio | 95.4k $2.7m | Added +27.6k |
| NORDEA INVESTMENT MANAGEMENT AB 0.00% of their portfolio | 88.2k $2.6m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 88.0k $2.5m | New |
| Tejara Capital Ltd 1.17% of their portfolio | 87.5k $2.5m | Reduced -18.0k |
| Skylands Capital, LLC 0.35% of their portfolio | 82.8k $2.4m | Reduced -1.1k |
| Monaco Asset Management SAM 0.87% of their portfolio | 80.0k $2.3m | Added +35.0k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 78.1k $2.3m | Added +54.7k |
| COMERICA BANK 0.01% of their portfolio | 76.6k $2.2m | Added +34.3k |
| CITIGROUP INC 0.00% of their portfolio | 76.1k $2.2m | Added +13.1k |
| AXA S.A. 0.01% of their portfolio | 75.7k $2.2m | Added +69.8k |
| GAGNON SECURITIES LLC 0.43% of their portfolio | 72.9k $2.1m | Reduced -18.3k |
| TWINBEECH CAPITAL LP 0.05% of their portfolio | 71.5k $2.1m | Added +62.0k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 70.9k $2.0m | Added +7.4k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 68.4k $2.0m | Added +844 |
| WEDGE CAPITAL MANAGEMENT L L P/NC 0.03% of their portfolio | 66.5k $1.9m | Reduced -52 |
| Cerity Partners LLC 0.00% of their portfolio | 65.9k $1.9m | Reduced -24.9k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.00% of their portfolio | 65.7k $1.9m | Added +25.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 62.2k $1.8m | Added +725 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 56.9k $1.6m | Unchanged |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio | 56.9k $1.6m | Reduced -50.7k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 56.7k $1.6m | Added +10.0k |
| MOODY NATIONAL BANK TRUST DIVISION 0.14% of their portfolio | 51.6k $1.5m | Added +2.7k |
| Dynamic Technology Lab Private Ltd 0.20% of their portfolio | 50.6k $1.5m | Added +38.9k |
| Thrivent Financial for Lutherans 0.00% of their portfolio | 48.7k $1.4m | Added +318 |
| Nebula Research & Development LLC 0.12% of their portfolio | 48.5k $1.4m | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 47.0k $1.4m | Reduced -602.9k |
| Verition Fund Management LLC 0.01% of their portfolio | 45.7k $1.3m | Reduced -53.2k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 45.6k $1.3m | New |
| Quantinno Capital Management LP 0.01% of their portfolio | 44.9k $1.3m | Added +25.0k |
| HUSSMAN STRATEGIC ADVISORS, INC. 0.28% of their portfolio | 42.0k $1.2m | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 41.6k $1.2m | Added +39.4k |