William Blair & Company
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William Blair & Company’s Leidos LDOS Stock Holding History

William Blair & Company’s Portfolio LDOS Stock Details LDOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$879K Buy
8,533
+4,717
+124% +$626K ﹤0.01% 1030
2026
Q1 		$593K Sell
3,816
-16,608
-81% -$2.98M ﹤0.01% 1093
2025
Q4 		$3.68M Sell
20,424
-2,424
-11% -$459K 0.01% 595
2025
Q3 		$4.32M Sell
22,848
-93
-0.4% -$16.2K 0.01% 559
2025
Q2 		$3.62M Sell
22,941
-3,112
-12% -$460K 0.01% 582
2025
Q1 		$3.52M Sell
26,053
-2,960
-10% -$413K 0.01% 575
2024
Q4 		$4.18M Sell
29,013
-8,033
-22% -$1.34M 0.01% 540
2024
Q3 		$6.04M Sell
37,046
-1,302
-3% -$197K 0.02% 451
2024
Q2 		$5.59M Sell
38,348
-1,443
-4% -$202K 0.02% 459
2024
Q1 		$5.22M Buy
39,791
+37,919
+2,026% +$4.52M 0.02% 470
2023
Q4 		$203K Buy
+1,872
New +$191K ﹤0.01% 1396
2023
Q2 		– Sell
-2,759
Closed -$254K – 1840
2023
Q1 		$254K Sell
2,759
-25
-0.9% -$2.42K ﹤0.01% 1306
2022
Q4 		$293K Sell
2,784
-76
-3% -$7.78K ﹤0.01% 1240
2022
Q3 		$250K Buy
2,860
+630
+28% +$61.5K ﹤0.01% 1303
2022
Q2 		$225K Buy
2,230
+184
+9% +$19.1K ﹤0.01% 1370
2022
Q1 		$221K Buy
+2,046
New +$197K ﹤0.01% 1482
2021
Q3 		– Sell
-2,092
Closed -$212K – 1913
2021
Q2 		$212K Sell
2,092
-2,294
-52% -$236K ﹤0.01% 1482
2021
Q1 		$422K Buy
4,386
+1,563
+55% +$158K ﹤0.01% 1191
2020
Q4 		$297K Buy
+2,823
New +$271K ﹤0.01% 1274
2020
Q3 		– Sell
-2,234
Closed -$209K – 1753
2020
Q2 		$209K Buy
+2,234
New +$220K ﹤0.01% 1225

Other funds holding LDOS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

William Blair & Company's LDOS Position: Q2 2026 in Review

William Blair & Company increased its Leidos (LDOS) stake by 124% in Q2 2026, buying an estimated $626K and bringing the position to 8,533 shares worth $879K. The position accounts for ﹤0.01% of the portfolio, ranked #1030.

William Blair & Company first reported a position in LDOS in Q2 2020 and has held it in 20 quarters since. The position peaked at $6.04M in Q3 2024. 772 funds tracked by Wall St. Rank hold LDOS as of Q2 2026.

  • William Blair & Company held 8,533 shares of Leidos worth $879K as of Q2 2026.
  • William Blair & Company bought 4,717 Leidos shares in Q2 2026, an estimated $626K.
  • Leidos made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1030 holding.
  • William Blair & Company first reported a position in Leidos in Q2 2020 and has held it in 20 quarters since.
  • William Blair & Company's Leidos position peaked at $6.04M in Q3 2024.
  • 772 funds tracked by Wall St. Rank held Leidos as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.