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.

Q4 2021 vs. Q3 2021

How the institutions holding Integral Ad Science Holding Corp. changed between Q3 2021 and Q4 2021.

All holders in Q4 2021 All holders in Q3 2021

13F holders of IAS: Q3 2021 compared with Q4 2021
Measure	Q3 2021	Of which not filed for Q4 2021	Q4 2021	Change
Holders	70	1	80	+11
Shares	145.1M	8.71K	153.4M	+8.29M (+5.7%)
Value	$2.99B	$180.0K	$3.41B	+$413.2M (+13.8%)

1 institution that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (23)

Institutions that held Integral Ad Science Holding Corp. at the end of Q4 2021 but not at the end of Q3 2021.

Institutions new to IAS in Q4 2021
Institution	Shares	Value	% of portfolio
August Capital Management VI, L.L.C.	6,285,864	$139.6M	94.02%
Lord, Abbett & Co. LLC	2,339,783	$52.0M	0.12%
Clearbridge Investments, LLC	565,857	$12.6M	0.01%
PDT Partners, LLC	64,399	$1.43M	0.11%
EFG Asset Management (North America) Corp.	55,089	$1.22M	0.16%
SEI Investments Co	49,939	$1.11M	0.00%
Jane Street Group, LLC	36,102	$802.0K	0.00%
Renaissance Technologies LLC	30,219	$671.0K	0.00%
Prudential Financial Inc	29,170	$648.0K	0.00%
1623 Capital LLC	22,441	$498.0K	0.19%
Panagora Asset Management Inc	20,618	$458.0K	0.00%
Zeno Research, LLC	20,461	$454.0K	0.44%
Wellington Management Group LLP	20,132	$447.0K	0.00%
LPL Financial LLC	12,658	$281.0K	0.00%
Manufacturers Life Insurance Company, The	11,492	$255.0K	0.00%
American Trust	11,422	$254.0K	0.02%
Susquehanna International Group, LLP	10,973	$244.0K	0.00%
Spouting Rock Asset Management, LLC	10,583	$235.0K	0.18%
UBS Group AG	7,262	$161.0K	0.00%
Meeder Asset Management Inc	1,138	$25.0K	0.00%
US Bancorp	232	$5.00K	0.00%
TCI Wealth Advisors, Inc.	193	$4.00K	0.00%
Captrust Financial Advisors	64	$1.00K	0.00%

Sold out (12)

Institutions that held Integral Ad Science Holding Corp. at the end of Q3 2021 and filed for Q4 2021 without it.

Institutions that sold out of IAS in Q4 2021
Institution	Shares, Q3 2021	Value, Q3 2021
Invesco Ltd.	679,617	$14.0M
Caas Capital Management LP	150,000	$3.10M
Tudor Investment Corp Et Al	96,269	$1.99M
Citadel Advisors LLC	94,745	$1.96M
Rokos Capital Management LLP	75,000	$1.57M
Woodline Partners LP	51,531	$1.06M
Teacher Retirement System of Texas	40,000	$825.0K
ExodusPoint Capital Management, LP	29,513	$609.0K
Cubist Systematic Strategies, LLC	11,331	$234.0K
Acadian Asset Management LLC	11,219	$230.0K
SG Americas Securities, LLC	8,158	$168.0K
Arkadios Wealth Advisors	1,000	$20.0K

Not filed for Q4 2021 yet (1)

Institutions that held Integral Ad Science Holding Corp. at the end of Q3 2021 and haven't filed a 13F for Q4 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding IAS in Q3 2021 that haven't filed for Q4 2021
Institution	Shares, Q3 2021	Value, Q3 2021
First Mercantile Trust Co	8,709	$180.0K