William Blair & Company
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William Blair & Company’s QuidelOrtho QDEL Stock Holding History

William Blair & Company’s Portfolio QDEL Stock Details QDEL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q1 		– Sell
-24,937
Closed -$1.11M – 1871
2024
Q4 		$1.11M Sell
24,937
-20,677
-45% -$846K ﹤0.01% 870
2024
Q3 		$2.08M Sell
45,614
-1,151
-2% -$46.6K 0.01% 701
2024
Q2 		$1.55M Sell
46,765
-3,453
-7% -$141K ﹤0.01% 754
2024
Q1 		$2.41M Buy
50,218
+1,059
+2% +$61.8K 0.01% 630
2023
Q4 		$3.62M Sell
49,159
-21,123
-30% -$1.43M 0.01% 532
2023
Q3 		$5.13M Sell
70,282
-4,037
-5% -$322K 0.02% 431
2023
Q2 		$6.16M Sell
74,319
-719
-1% -$62.9K 0.02% 402
2023
Q1 		$6.69M Buy
75,038
+34,470
+85% +$3M 0.03% 381
2022
Q4 		$3.48M Buy
40,568
+21,325
+111% +$1.81M 0.02% 502
2022
Q3 		$1.38M Sell
19,243
-2,054
-10% -$184K 0.01% 719
2022
Q2 		$2.07M Sell
21,297
-162,734
-88% -$16.6M 0.01% 631
2022
Q1 		$20.7M Sell
184,031
-39,146
-18% -$4.17M 0.07% 218
2021
Q4 		$30.1M Sell
223,177
-48,918
-18% -$6.81M 0.09% 189
2021
Q3 		$38.4M Sell
272,095
-24,080
-8% -$3.24M 0.13% 153
2021
Q2 		$37.9M Sell
296,175
-41,832
-12% -$4.92M 0.13% 155
2021
Q1 		$43.2M Buy
338,007
+1,077
+0.3% +$199K 0.16% 142
2020
Q4 		$60.5M Buy
336,930
+70,437
+26% +$15.7M 0.22% 101
2020
Q3 		$58.5M Buy
266,493
+180,433
+210% +$40.3M 0.25% 91
2020
Q2 		$19.3M Buy
+86,060
New +$13.5M 0.09% 184
2019
Q1 		– Sell
-850
Closed -$41K – 1731
2018
Q4 		$41K Buy
+850
New +$50.7K ﹤0.01% 1415
2014
Q2 		– Sell
-357,446
Closed -$9.76M – 2108
2014
Q1 		$9.76M Sell
357,446
-14,453
-4% -$422K 0.02% 828
2013
Q4 		$11.5M Buy
371,899
+15,465
+4% +$397K 0.02% 751
2013
Q3 		$10.1M Sell
356,434
-14,131
-4% -$386K 0.02% 734
2013
Q2 		$9.46M Buy
+370,565
New +$8.68M 0.02% 743

Other funds holding QDEL

T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
ACH
ArrowMark Colorado Holdings Denver, Colorado $2.4B AUM 42.85% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

William Blair & Company's QDEL Position: Q1 2025 in Review

William Blair & Company sold out of QuidelOrtho (QDEL) in Q1 2025, closing a stake of 24,937 shares — an estimated $1.11M sold.

William Blair & Company first reported a position in QDEL in Q2 2013 and held it in 24 quarters. The position peaked at $60.5M in Q4 2020. 266 funds tracked by Wall St. Rank hold QDEL as of Q1 2025.

  • William Blair & Company reported no remaining QuidelOrtho position as of Q1 2025 after selling out during the quarter.
  • William Blair & Company sold 24,937 QuidelOrtho shares in Q1 2025, an estimated $1.11M.
  • William Blair & Company first reported a position in QuidelOrtho in Q2 2013 and held it in 24 quarters.
  • William Blair & Company's QuidelOrtho position peaked at $60.5M in Q4 2020.
  • 266 funds tracked by Wall St. Rank held QuidelOrtho as of Q1 2025.

Based on William Blair & Company's 13F filing for Q1 2025, filed 9 May 2025.