MAM
ITOS

MPM Asset Management’s iTeos Therapeutics ITOS Stock Holding History

MPM Asset Management’s Portfolio ITOS Stock Details ITOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-2,738,785
Closed -$16.4M – 6
2025
Q1 		$16.4M Hold
2,738,785
– – 23.55% 2
2024
Q4 		$21M Hold
2,738,785
– – 16.91% 2
2024
Q3 		$28M Hold
2,738,785
– – 19.25% 2
2024
Q2 		$40.6M Hold
2,738,785
– – 22.32% 3
2024
Q1 		$37.4M Hold
2,738,785
– – 15.24% 3
2023
Q4 		$30M Hold
2,738,785
– – 14.74% 3
2023
Q3 		$30M Hold
2,738,785
– – 16.06% 3
2023
Q2 		$36.3M Hold
2,738,785
– – 17.78% 3
2023
Q1 		$37.3M Hold
2,738,785
– – 15.53% 4
2022
Q4 		$53.5M Hold
2,738,785
– – 22.38% 3
2022
Q3 		$52.2M Hold
2,738,785
– – 19.87% 3
2022
Q2 		$56.4M Hold
2,738,785
– – 23.81% 1
2022
Q1 		$88.1M Sell
2,738,785
-146,685
-5% -$5.33M 30.12% 1
2021
Q4 		$134M Sell
2,885,470
-405,241
-12% -$13.5M 29.03% 1
2021
Q3 		$88.8M Sell
3,290,711
-375,076
-10% -$9.81M 20.59% 1
2021
Q2 		$94M Sell
3,665,787
-40,876
-1% -$974K 17.48% 2
2021
Q1 		$127M Hold
3,706,663
– – 24.48% 1
2020
Q4 		$125M Hold
3,706,663
– – 17.74% 1
2020
Q3 		$91.4M Buy
+3,706,663
New +$99.7M 17.05% 3

Other funds holding ITOS

EC
EcoR1 Capital San Francisco, California $2.36B AUM 204.53% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $1.97B AUM 125.1% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
BCM
Boxer Capital Management San Diego, California $762M AUM 1,125.36% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

MPM Asset Management's ITOS Position: Q2 2025 in Review

MPM Asset Management sold out of iTeos Therapeutics (ITOS) in Q2 2025, closing a stake of 2,738,785 shares — an estimated $16.4M sold.

MPM Asset Management first reported a position in ITOS in Q3 2020 and held it in 19 quarters. The position peaked at $134M in Q4 2021. 136 funds tracked by Wall St. Rank hold ITOS as of Q2 2025.

  • MPM Asset Management reported no remaining iTeos Therapeutics position as of Q2 2025 after selling out during the quarter.
  • MPM Asset Management sold 2,738,785 iTeos Therapeutics shares in Q2 2025, an estimated $16.4M.
  • MPM Asset Management first reported a position in iTeos Therapeutics in Q3 2020 and held it in 19 quarters.
  • MPM Asset Management's iTeos Therapeutics position peaked at $134M in Q4 2021.
  • 136 funds tracked by Wall St. Rank held iTeos Therapeutics as of Q2 2025.

Based on MPM Asset Management's 13F filing for Q2 2025, filed 14 Aug 2025.