Integral Ad Science
IAS was delisted on the 22nd of December, 2025.
70 hedge funds and large institutions have $2.99B invested in Integral Ad Science in 2021 Q3 according to their latest regulatory filings, with 35 funds opening new positions, 16 increasing their positions, 12 reducing their positions, and 35 closing their positions.
94.27% more ownership
Funds ownership: 0% → 94.27% (+94%)
33% more repeat investments, than reductions
Existing positions increased: 16 | Existing positions reduced: 12
1% more capital invested
Capital invested by funds: $2.96B → $2.99B (+$34.7M)
0% more funds holding
Funds holding: 70 → 70 (0)
0% more funds holding in top 10
Funds holding in top 10: 4 → 4 (0)
0% more first-time investments, than exits
New positions opened: 35 | Existing positions closed: 35
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SHCM
Shelter Haven Capital Management
Summit,
New Jersey
|
+$40.8M |
| 2 |
Vanguard Group
Malvern,
Pennsylvania
|
+$34.8M |
| 3 |
BlackRock
New York
|
+$17.1M |
| 4 |
Invesco
Atlanta,
Georgia
|
+$13.4M |
| 5 |
TCM
TimesSquare Capital Management
New York
|
+$10.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$13.8M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
-$12.5M |
| 3 |
PAMP
Polar Asset Management Partners
Toronto,
Ontario, Canada
|
-$12.4M |
| 4 |
Adage Capital Partners
Boston,
Massachusetts
|
-$11.3M |
| 5 |
IAM
Ion Asset Management
Herzliya,
Israel
|
-$10.3M |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
101
Qube Research & Technologies (QRT)
London,
United Kingdom
| – | -$300K | -14,600 | Closed |
|
|
MS
102
Maven Securities
St Helier,
Jersey
| – | -$286K | -13,889 | Closed |
|
|
CC
103
Centiva Capital
New York
| – | -$217K | -10,555 | Closed |
|
|
WHP
104
Washington Harbour Partners
Arlington,
Virginia
| – | -$206K | -10,000 | Closed |
|
|
OCM
105
Ovata Capital Management
Hong Kong
| – | -$21K | -1,000 | Closed |
|
IAS Hedge Fund Activity: Q3 2021 in Review
70 of the 5,713 institutional investors tracked by Wall St. Rank reported a position in Integral Ad Science (IAS) for Q3 2021, worth a combined $2.99B — up 1.2% from $2.96B a quarter earlier.
Fund positioning in IAS was balanced in Q3 2021: 35 funds opened new positions, 35 closed out, 16 added to existing stakes and 12 trimmed.
The largest buyer was Shelter Haven Capital Management, adding an estimated $40.8M. The largest seller was Driehaus Capital Management, exiting entirely with an estimated $13.8M sold.
- 70 institutional investors held Integral Ad Science (IAS) as of Q3 2021, unchanged from Q2 2021.
- Funds reported $2.99B of Integral Ad Science stock for Q3 2021, up 1.2% quarter-over-quarter.
- 35 funds opened new Integral Ad Science positions in Q3 2021 and 35 closed out, a net change of 0 holders.
- The largest Integral Ad Science buyer in Q3 2021 was Shelter Haven Capital Management, an estimated $40.8M added.
- The largest Integral Ad Science seller in Q3 2021 was Driehaus Capital Management, an estimated $13.8M sold.
Based on aggregated 13F filings for Q3 2021.