Marshall Wace
IAS

Marshall Wace’s Integral Ad Science IAS Stock Holding History

Marshall Wace’s Portfolio IAS Stock Details IAS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-44,354
Closed -$369K – 3100
2025
Q2 		$369K Sell
44,354
-70,773
-61% -$540K ﹤0.01% 2250
2025
Q1 		$928K Buy
+115,127
New +$1.15M ﹤0.01% 1817
2024
Q4 		– Sell
-23,500
Closed -$254K – 2763
2024
Q3 		$254K Buy
+23,500
New +$253K ﹤0.01% 2211
2024
Q2 		– Sell
-158,308
Closed -$1.58M – 2717
2024
Q1 		$1.58M Buy
158,308
+85,411
+117% +$1.14M ﹤0.01% 1463
2023
Q4 		$1.05M Sell
72,897
-205,535
-74% -$2.75M ﹤0.01% 1463
2023
Q3 		$3.31M Sell
278,432
-248,289
-47% -$3.84M 0.01% 1018
2023
Q2 		$9.47M Buy
526,721
+186,175
+55% +$3.14M 0.02% 756
2023
Q1 		$4.86M Sell
340,546
-68,975
-17% -$775K 0.01% 1012
2022
Q4 		$3.6M Sell
409,521
-315,434
-44% -$2.68M 0.01% 1401
2022
Q3 		$5.25M Buy
+724,955
New +$6.48M 0.01% 1335
2022
Q2 		– Sell
-16,744
Closed -$232K – 3617
2022
Q1 		$232K Buy
+16,744
New +$285K ﹤0.01% 3041

Other funds holding IAS

VEPM
Vista Equity Partners Management San Francisco, California $42.7M AUM 16.65% 1-Year Est. Return
AVA
Atlas Venture Advisors Boston, Massachusetts $143M AUM 25.68% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
SM
Sunriver Management Greenwich, Connecticut $591M AUM 2.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
PCP
P2 Capital Partners New York $210M AUM 1.23% 1-Year Est. Return
KC
Kryger Capital London, United Kingdom $1.41B AUM 86.31% 1-Year Est. Return
NAM
Nexpoint Asset Management Dallas, Texas $1.49B AUM 61.08% 1-Year Est. Return
GCL
Glazer Capital LLC New York $4.71B AUM 81.93% 1-Year Est. Return

Marshall Wace's IAS Position: Q3 2025 in Review

Marshall Wace sold out of Integral Ad Science (IAS) in Q3 2025, closing a stake of 44,354 shares — an estimated $369K sold.

Marshall Wace first reported a position in IAS in Q1 2022 and held it in 11 quarters. The position peaked at $9.47M in Q2 2023. 171 funds tracked by Wall St. Rank hold IAS as of Q3 2025.

  • Marshall Wace reported no remaining Integral Ad Science position as of Q3 2025 after selling out during the quarter.
  • Marshall Wace sold 44,354 Integral Ad Science shares in Q3 2025, an estimated $369K.
  • Marshall Wace first reported a position in Integral Ad Science in Q1 2022 and held it in 11 quarters.
  • Marshall Wace's Integral Ad Science position peaked at $9.47M in Q2 2023.
  • 171 funds tracked by Wall St. Rank held Integral Ad Science as of Q3 2025.

Based on Marshall Wace's 13F filing for Q3 2025, filed 13 Nov 2025.