Marshall Wace
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Marshall Wace’s Personalis PSNL Stock Holding History

Marshall Wace’s Portfolio PSNL Stock Details PSNL Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-696,286
Closed -$2.44M – 3067
2025
Q1 		$2.44M Buy
696,286
+626,276
+895% +$2.98M ﹤0.01% 1388
2024
Q4 		$405K Sell
70,010
-386,966
-85% -$1.79M ﹤0.01% 2118
2024
Q3 		$2.46M Buy
456,976
+347,124
+316% +$1.43M ﹤0.01% 1290
2024
Q2 		$129K Sell
109,852
-101,050
-48% -$139K ﹤0.01% 2375
2024
Q1 		$314K Buy
210,902
+59,221
+39% +$91.7K ﹤0.01% 2095
2023
Q4 		$319K Buy
+151,681
New +$196K ﹤0.01% 1871
2023
Q1 		– Sell
-221,823
Closed -$439K – 3018
2022
Q4 		$439K Sell
221,823
-215,698
-49% -$543K ﹤0.01% 2422
2022
Q3 		$1.3M Sell
437,521
-156,121
-26% -$595K ﹤0.01% 2278
2022
Q2 		$2.05M Buy
593,642
+202,371
+52% +$1.03M ﹤0.01% 1971
2022
Q1 		$3.2M Sell
391,271
-370,054
-49% -$3.83M 0.01% 1740
2021
Q4 		$10.9M Sell
761,325
-530,923
-41% -$8.85M 0.02% 812
2021
Q3 		$24.9M Sell
1,292,248
-1,979
-0.2% -$41.4K 0.1% 211
2021
Q2 		$32.7M Buy
1,294,227
+743,691
+135% +$17M 0.15% 141
2021
Q1 		$13.5M Buy
550,536
+250,604
+84% +$8.59M 0.06% 322
2020
Q4 		$11M Buy
+299,932
New +$9.07M 0.06% 321

Other funds holding PSNL

MC
Merck & Co Kenilworth, New Jersey $349M AUM 146.07% 1-Year Est. Return
LMC
Lightspeed Management Company Menlo Park, California $988M AUM 7.5% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
ACM
AIGH Capital Management Baltimore, Maryland $733M AUM 327.32% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $61.9B AUM 29.81% 1-Year Est. Return
BWLSA
Blue Water Life Science Advisors Larkspur, California $125M AUM 91.82% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Marshall Wace's PSNL Position: Q2 2025 in Review

Marshall Wace sold out of Personalis (PSNL) in Q2 2025, closing a stake of 696,286 shares — an estimated $2.44M sold.

Marshall Wace first reported a position in PSNL in Q4 2020 and held it in 15 quarters. The position peaked at $32.7M in Q2 2021. 105 funds tracked by Wall St. Rank hold PSNL as of Q2 2025.

  • Marshall Wace reported no remaining Personalis position as of Q2 2025 after selling out during the quarter.
  • Marshall Wace sold 696,286 Personalis shares in Q2 2025, an estimated $2.44M.
  • Marshall Wace first reported a position in Personalis in Q4 2020 and held it in 15 quarters.
  • Marshall Wace's Personalis position peaked at $32.7M in Q2 2021.
  • 105 funds tracked by Wall St. Rank held Personalis as of Q2 2025.

Based on Marshall Wace's 13F filing for Q2 2025, filed 13 Aug 2025.