Millennium Management’s Integral Ad Science IAS Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q4 | – | Sell |
-333,892
| Closed | -$3.4M | – | 6222 |
|
|
2025
Q3 | $3.4M | Buy |
+333,892
| New | +$2.89M | ﹤0.01% | 3531 |
|
|
2025
Q2 | – | Sell |
-406,770
| Closed | -$3.28M | – | 6072 |
|
|
2025
Q1 | $3.28M | Buy |
406,770
+342,646
| +534% | +$3.42M | ﹤0.01% | 3299 |
|
|
2024
Q4 | $669K | Buy |
+64,124
| New | +$703K | ﹤0.01% | 4521 |
|
|
2024
Q3 | – | Sell |
-1,224,138
| Closed | -$11.9M | – | 6254 |
|
|
2024
Q2 | $11.9M | Buy |
1,224,138
+119,740
| +11% | +$1.15M | 0.01% | 1932 |
|
|
2024
Q1 | $11M | Sell |
1,104,398
-3,948,576
| -78% | -$52.7M | ﹤0.01% | 2093 |
|
|
2023
Q4 | $72.7M | Buy |
5,052,974
+4,753,774
| +1,589% | +$63.6M | 0.03% | 567 |
|
|
2023
Q3 | $3.56M | Buy |
299,200
+104,782
| +54% | +$1.62M | ﹤0.01% | 3035 |
|
|
2023
Q2 | $3.5M | Sell |
194,418
-270,042
| -58% | -$4.56M | ﹤0.01% | 2986 |
|
|
2023
Q1 | $6.63M | Buy |
464,460
+185,419
| +66% | +$2.08M | ﹤0.01% | 2345 |
|
|
2022
Q4 | $2.45M | Sell |
279,041
-473,708
| -63% | -$4.02M | ﹤0.01% | 3404 |
|
|
2022
Q3 | $5.45M | Buy |
752,749
+637,925
| +556% | +$5.71M | ﹤0.01% | 2814 |
|
|
2022
Q2 | $1.14M | Buy |
114,824
+27,636
| +32% | +$330K | ﹤0.01% | 4249 |
|
|
2022
Q1 | $1.2M | Sell |
87,188
-77,688
| -47% | -$1.32M | ﹤0.01% | 4360 |
|
|
2021
Q4 | $3.66M | Sell |
164,876
-70,149
| -30% | -$1.6M | ﹤0.01% | 3196 |
|
|
2021
Q3 | $4.85M | Sell |
235,025
-177,432
| -43% | -$3.5M | ﹤0.01% | 2891 |
|
|
2021
Q2 | $8.49M | Buy |
+412,457
| New | +$8.49M | 0.01% | 2115 |
|
Other funds holding IAS
Millennium Management's IAS Position: Q4 2025 in Review
Millennium Management sold out of Integral Ad Science (IAS) in Q4 2025, closing a stake of 333,892 shares — an estimated $3.4M sold.
Millennium Management first reported a position in IAS in Q2 2021 and held it in 16 quarters. The position peaked at $72.7M in Q4 2023. 2 funds tracked by Wall St. Rank hold IAS as of Q4 2025.
- Millennium Management reported no remaining Integral Ad Science position as of Q4 2025 after selling out during the quarter.
- Millennium Management sold 333,892 Integral Ad Science shares in Q4 2025, an estimated $3.4M.
- Millennium Management first reported a position in Integral Ad Science in Q2 2021 and held it in 16 quarters.
- Millennium Management's Integral Ad Science position peaked at $72.7M in Q4 2023.
- 2 funds tracked by Wall St. Rank held Integral Ad Science as of Q4 2025.
Based on Millennium Management's 13F filing for Q4 2025, filed 17 Feb 2026.