MF
IAS

Magnetar Financial’s Integral Ad Science IAS Stock Holding History

Magnetar Financial’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
Q2 		– Sell
-107,327
Closed -$865K – 994
2025
Q1 		$865K Buy
+107,327
New +$1.07M 0.01% 361

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 $5.72T AUM 30.48% 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
RCMNY
Rubric Capital Management (New York) New York $9.44B AUM 68.42% 1-Year Est. Return
CM
Corvex Management New York $2.52B AUM 25.53% 1-Year Est. Return
ClearBridge Investments
ClearBridge Investments New York $115B AUM 24.78% 1-Year Est. Return

Magnetar Financial's IAS Position: Q2 2025 in Review

Magnetar Financial sold out of Integral Ad Science (IAS) in Q2 2025, closing a stake of 107,327 shares — an estimated $865K sold.

Magnetar Financial first reported a position in IAS in Q1 2025 and held it in 1 quarter. The position peaked at $865K in Q1 2025. 170 funds tracked by Wall St. Rank hold IAS as of Q2 2025.

  • Magnetar Financial reported no remaining Integral Ad Science position as of Q2 2025 after selling out during the quarter.
  • Magnetar Financial sold 107,327 Integral Ad Science shares in Q2 2025, an estimated $865K.
  • Magnetar Financial first reported a position in Integral Ad Science in Q1 2025 and held it in 1 quarter.
  • Magnetar Financial's Integral Ad Science position peaked at $865K in Q1 2025.
  • 170 funds tracked by Wall St. Rank held Integral Ad Science as of Q2 2025.

Based on Magnetar Financial's 13F filing for Q2 2025, filed 12 Aug 2025.