Integral Ad Science Holding Corp.

IASDelisted Dec 23, 2025

Industry: Services-Computer Programming, Data Processing, Etc.
SEC CIK: 0001842718

SEC filings (opens in a new tab)

Integral Ad Science Holding Corp. was delisted on Dec 23, 2025; its insiders filed their last Form 4 on Dec 29, 2025; 171 institutions reported holding it in 13F filings for Q3 2025, worth $1.65B in total; Soros Fund Management was the only superinvestor holding it.

Q3 2025 vs. Q2 2025

How the institutions holding Integral Ad Science Holding Corp. changed between Q2 2025 and Q3 2025.

All holders in Q3 2025 All holders in Q2 2025

13F holders of IAS: Q2 2025 compared with Q3 2025
Measure	Q2 2025	Of which not filed for Q3 2025	Q3 2025	Change
Holders	170	2	171	+3
Shares	161.4M	95.6K	162.3M	+1.01M (+0.6%)
Value	$1.34B	$794.8K	$1.65B	+$310.3M (+23.1%)

2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (47)

Institutions that held Integral Ad Science Holding Corp. at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to IAS in Q3 2025
Institution	Shares	Value	% of portfolio
Omni Event Management Ltd	3,000,000	$30.5M	3.52%
Highland Capital Management Fund Advisors, L.P.	2,683,061	$27.3M	2.43%
Glazer Capital, LLC	2,096,797	$21.3M	0.72%
Vivaldi Asset Management, LLC	2,088,796	$21.2M	1.37%
Soros Fund Management LLCSuperinvestorSoros Fund Management	1,990,000	$20.2M	0.32%
Balyasny Asset Management LLC	1,166,530	$11.9M	0.02%
Water Island Capital LLC	1,071,160	$10.9M	1.56%
Polar Asset Management Partners Inc.	1,000,000	$10.2M	0.21%
CNH Partners LLC	991,705	$10.1M	0.26%
Alpine Associates Management Inc.	641,140	$6.52M	0.40%
Pacer Advisors, Inc.	582,510	$5.92M	0.02%
Gabelli Funds LLC	383,797	$3.90M	0.03%
Gabelli & Co Investment Advisers, Inc.	350,600	$3.57M	0.57%
Millennium Management LLC	333,892	$3.40M	0.00%
Carmignac Gestion	266,001	$2.71M	0.04%
Morningstar Investment Management LLC	71,712	$729.0K	0.03%
Danske Bank A/S	66,810	$679.5K	0.00%
Fifth Lane Capital, LP	50,000	$508.5K	0.51%
LSV Asset Management	48,500	$493.0K	0.00%
Walleye Capital LLC	48,127	$489.5K	0.00%
Omers Administration Corp	47,800	$486.1K	0.00%
Wolverine Asset Management LLC	43,393	$441.3K	0.01%
Virtu Financial LLC	42,274	$430.0K	0.02%
Jain Global LLC	36,500	$371.2K	0.00%
Commonwealth of Pennsylvania Public School Empls Retrmt Sys	25,000	$254.3K	0.00%
State of Wyoming	21,530	$219.0K	0.02%
Cornerstone Investment Partners, LLC	18,477	$187.9K	0.01%
Guggenheim Capital LLC	17,114	$174.0K	0.00%
Cerity Partners LLC	12,766	$129.8K	0.00%
Royce & Associates LP	12,226	$124.3K	0.00%
Schroder Investment Management Group	12,127	$123.2K	0.00%
Mirabella Financial Services LLP	11,800	$120.0K	0.01%
Quantinno Capital Management LP	10,635	$108.2K	0.00%
Gamco Investors, Inc. Et Al	10,000	$101.7K	0.00%
PenderFund Capital Management Ltd.	9,100	$92.5K	0.02%
Longfellow Investment Management Co LLC	7,384	$75.1K	0.02%
Johnson Financial Group, Inc.	5,904	$60.0K	0.00%
FNY Investment Advisers, LLC	5,000	$50.0K	0.02%
State of Alaska, Department of Revenue	4,436	$45.0K	0.00%
Wealthspire Advisors, LLC	1,000	$10.2K	0.00%
SRS Capital Advisors, Inc.	621	$6.32K	0.00%
Oxford Asset Management LLP	457	$4.65K	0.00%
Optiver Holding B.V.	256	$2.60K	0.00%
Jones Financial Companies LLLP	137	$1.40K	0.00%
Larson Financial Group LLC	47	$478	0.00%
Quadrant Capital Group LLC	27	$275	0.00%
Rockefeller Capital Management L.P.	27	$275	0.00%

Sold out (44)

Institutions that held Integral Ad Science Holding Corp. at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of IAS in Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Rubric Capital Management LP	2,971,951	$24.7M
Corvex Management LP	2,618,000	$21.8M
Clearbridge Investments, LLC	2,325,232	$19.3M
Alta Fox Capital Management, LLC	1,800,090	$15.0M
Invenomic Capital Management LP	1,580,066	$13.1M
Jacobs Levy Equity Management, Inc	1,035,774	$8.61M
Frontier Capital Management Co LLC	822,643	$6.84M
Renaissance Technologies LLC	232,300	$1.93M
one8zero8, LLC	209,425	$1.74M
HRT Financial LP	170,208	$1.41M
Algert Global LLC	164,250	$1.36M
Man Group plc	117,229	$974.2K
Manatuck Hill Partners, LLC	100,000	$831.0K
Jupiter Asset Management Ltd	88,272	$733.5K
Bank of Montreal	72,138	$599.5K
Delphi Management Inc	64,804	$539.0K
Citadel Advisors LLC	63,817	$530.3K
Raymond James Financial Inc	59,310	$492.9K
Versor Investments LP	56,100	$466.2K
Two Sigma Advisers, LP	52,600	$437.1K
Readystate Asset Management LP	50,685	$421.2K
Marshall Wace, LLP	44,354	$368.6K
Squarepoint Ops LLC	40,902	$339.9K
Federated Hermes, Inc.	30,000	$249.3K
DRW Securities, LLC	28,347	$235.6K
Campbell & CO Investment Adviser LLC	26,314	$218.7K
Lazard Asset Management LLC	25,957	$215.0K
Centiva Capital, LP	25,029	$208.0K
Brevan Howard Capital Management LP	22,762	$189.2K
Jump Financial, LLC	19,520	$162.2K
Graham Capital Management, L.P.	19,166	$159.3K
MQS Management LLC	15,480	$128.6K
QRG Capital Management, Inc.	14,009	$116.4K
PDT Partners, LLC	13,586	$112.9K
Engineers Gate Manager LP	12,811	$106.5K
Public Employees Retirement System of Ohio	11,121	$92.4K
Aster Capital Management (DIFC) Ltd	5,209	$43.3K
Mount Yale Investment Advisors, LLC	2,071	$17.2K
Simplex Trading, LLC	1,775	$14.0K
Skopos Labs, Inc.	751	$6.24K
Comerica Bank	701	$5.83K
Trust Co of Vermont	207	$1.72K
CIBC Private Wealth Group, LLC	180	$1.50K
National Bank of Canada	7	$58

Not filed for Q3 2025 yet (2)

Institutions that held Integral Ad Science Holding Corp. at the end of Q2 2025 and haven't filed a 13F for Q3 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding IAS in Q2 2025 that haven't filed for Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Washington Harbour Partners LP	68,520	$569.4K
EP Wealth Advisors, LLC	27,128	$225.4K