Integral Ad Science
IAS was delisted on the 22nd of December, 2025.
187 hedge funds and large institutions have $1.28B invested in Integral Ad Science in 2025 Q1 according to their latest regulatory filings, with 49 funds opening new positions, 54 increasing their positions, 62 reducing their positions, and 27 closing their positions.
1,853% more call options, than puts
Call options by funds: $293K | Put options by funds: $15K
81% more first-time investments, than exits
New positions opened: 49 | Existing positions closed: 27
50% more funds holding in top 10
Funds holding in top 10: 6 → 9 (+3)
13% more funds holding
Funds holding: 165 → 187 (+22)
0.54% more ownership
Funds ownership: 96.53% → 97.08% (+0.54%)
13% less repeat investments, than reductions
Existing positions increased: 54 | Existing positions reduced: 62
22% less capital invested
Capital invested by funds: $1.64B → $1.28B (-$358M)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
CM
Corvex Management
New York
|
+$26.1M |
| 2 |
AFCM
Alta Fox Capital Management
Fort Worth,
Texas
|
+$12.1M |
| 3 |
RCMNY
Rubric Capital Management (New York)
New York
|
+$11.9M |
| 4 |
CSS
Cubist Systematic Strategies
Stamford,
Connecticut
|
+$9.21M |
| 5 |
SM
Sunriver Management
Greenwich,
Connecticut
|
+$8.74M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
-$41.5M |
| 2 |
Ameriprise
Minneapolis,
Minnesota
|
-$10M |
| 3 |
ACM
Ararat Capital Management
Westport,
Connecticut
|
-$6.9M |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$5.68M |
| 5 |
N
Nuveen
Charlotte,
North Carolina
|
-$5.67M |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
EC
201
EntryPoint Capital
New York
| – | -$387K | -37,083 | Closed |
|
202
Thrivent Financial for Lutherans
Minneapolis,
Minnesota
| – | -$328K | -31,417 | Closed |
|
|
HM
203
Harvest Management
New York
| – | -$299K | -30,000 | Closed |
|
|
OC
204
Oppenheimer & Co
New York
| – | -$293K | -28,040 | Closed |
|
|
SIP
205
Stoneridge Investment Partners
Radnor,
Pennsylvania
| – | -$290K | -27,808 | Closed |
|
|
OCM
206
Osterweis Capital Management
San Francisco,
California
| – | -$149K | -14,285 | Closed |
|
207
PEAK6
Chicago,
Illinois
| – | -$146K | -14,012 | Closed |
|
|
CT
208
ClearAlpha Technologies
Greenwich,
Connecticut
| – | -$143K | -13,670 | Closed |
|
|
AT
209
American Trust
Lexington,
Kentucky
| – | -$121K | -11,559 | Closed |
|
210
Creative Planning
Overland Park,
Kansas
| – | -$115K | -11,059 | Closed |
|
211
Two Sigma Advisers
New York
| – | -$109K | -10,400 | Closed |
|
|
CFGS
212
Concourse Financial Group Securities
Birmingham,
Alabama
| – | -$25.4K | -2,525 | Closed |
|
|
HWM
213
Hemington Wealth Management
Falls Church,
Virginia
| – | +$30 | +3 | +27% |
|
IAS Hedge Fund Activity: Q1 2025 in Review
187 of the 7,461 institutional investors tracked by Wall St. Rank reported a position in Integral Ad Science (IAS) for Q1 2025, worth a combined $1.28B — down 22% from $1.64B a quarter earlier.
Buyers outnumbered sellers: 49 funds opened new IAS positions and 27 closed out — a net gain of 22 holders — while 54 added to existing stakes and 62 trimmed.
The largest buyer was Corvex Management, opening a new position worth an estimated $26.1M. The largest seller was Alyeska Investment Group, exiting entirely with an estimated $41.5M sold.
- 187 institutional investors held Integral Ad Science (IAS) as of Q1 2025, up from 165 in Q4 2024.
- Funds reported $1.28B of Integral Ad Science stock for Q1 2025, down 22% quarter-over-quarter.
- 49 funds opened new Integral Ad Science positions in Q1 2025 and 27 closed out, a net change of +22 holders.
- The largest Integral Ad Science buyer in Q1 2025 was Corvex Management, an estimated $26.1M added.
- The largest Integral Ad Science seller in Q1 2025 was Alyeska Investment Group, an estimated $41.5M sold.
Based on aggregated 13F filings for Q1 2025.