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Ken Griffin's QuidelOrtho Corporation (QDEL) position

Not anymore: Ken Griffin fully exited QDEL in Q4 2025. The position peaked at an amount we cannot price in Q2 2022.
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Value at exit
an amount we cannot price
Shares at exit
169K
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

QDEL price vs Griffin's position

Dates
$16$16.5$17$17.5← Earlier —8 purchases, 6 sells
Average closing price · filing quarter
Price range · filing quarter

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q4 2025 Exited −169K −100.0% 0 Feb 17, 2026
Q3 2025 Added +122K +259.7% 169K Nov 14, 2025
Q2 2025 Reduced −603K −92.8% 47K Aug 14, 2025
Q1 2025 Reduced −40K −5.8% 650K May 15, 2025
Q4 2024 Added +626K +987.3% 690K Feb 14, 2025
Q3 2024 Added +50K +362.8% 63K Nov 14, 2024
Q2 2024 Reduced −242K −94.6% 14K Aug 14, 2024
Q1 2024 Added +214K +520.4% 256K May 15, 2024
Q4 2023 Reduced −129K −75.8% 41K Feb 14, 2024
Q3 2023 Added +78K +84.4% 170K Nov 14, 2023
Q2 2023 Added +92K +18,367.4% 92K Aug 14, 2023
Q1 2023 Reduced −214K −99.8% 500 May 15, 2023
Q4 2022 Reduced −1.1M −83.1% 214K Feb 14, 2023
Q3 2022 Added +787K +164.2% 1.3M Nov 14, 2022
Q2 2022 New +479K 479K Aug 15, 2022
Data through Q4 2025 · filed Feb 17, 2026
15 grouped rows from 15 quarters

More Griffin positions

Common questions

Does Ken Griffin own QDEL?

Not currently. Ken Griffin fully exited QDEL in Q4 2025, and the complete history is above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy QDEL?

Ken Griffin first disclosed a QDEL position in Q2 2022; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell QDEL?

Yes. Ken Griffin reduced and then fully exited QDEL by Q4 2025; the reductions are in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of QDEL does Ken Griffin own?

None as of the latest filing: Ken Griffin has exited QDEL. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for QDEL?

Ken Griffin began building the QDEL position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.