Vault-13

INTEGRAL AD SCIENCE HLDNG CO IAS

COM · Common Stock · CUSIP 45828L108 · ISIN US45828L1089

165 institutional holders -7 vs Q3 2024
157,006,752157.0m shares reported held*
$1.6bnreported value*
27 new 54 added 56 reduced 41 sold out net bought ≈ $6.3m (+607.2k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($1.1m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $10.44. Options: 2 managers hold calls ($230.7k notional), 3 hold puts ($46.9k).

Trends to Q4 2024

Institutional holders

Managers reporting a position, each quarter

0100200Q3 22: 104Q4 22: 108Q1 23: 117Q2 23: 169Q3 23: 165Q4 23: 174Q1 24: 166Q2 24: 156Q3 24: 172Q4 24: 165165Q3 22Q1 23Q3 23Q1 24Q3 24Q4 24
Numbers
QuarterHolders
Q3 2022104
Q4 2022108
Q1 2023117
Q2 2023169
Q3 2023165
Q4 2023174
Q1 2024166
Q2 2024156
Q3 2024172
Q4 2024165

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
2000200Q1 23: 57 bought or addedQ1 23: 56 cut or sold outQ2 23: 118 bought or addedQ2 23: 49 cut or sold outQ2 23Q3 23: 103 bought or addedQ3 23: 80 cut or sold outQ4 23: 101 bought or addedQ4 23: 68 cut or sold outQ4 23Q1 24: 100 bought or addedQ1 24: 86 cut or sold outQ2 24: 96 bought or addedQ2 24: 84 cut or sold outQ2 24Q3 24: 91 bought or addedQ3 24: 83 cut or sold outQ4 24: 81 bought or addedQ4 24: 97 cut or sold outQ4 24
Numbers
QuarterBought or addedCut or sold out
Q1 20235756
Q2 202311849
Q3 202310380
Q4 202310168
Q1 202410086
Q2 20249684
Q3 20249183
Q4 20248197

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$2m$4m$6m$8mQ1 24 calls: $572.3kQ1 24 puts: $662.4kQ1 24P/C 1.16Q2 24 calls: $6.0mQ2 24 puts: $1.1mQ2 24P/C 0.18Q3 24 calls: $2.0mQ3 24 puts: $300.8kQ3 24P/C 0.15Q4 24 calls: $230.7kQ4 24 puts: $46.9kQ4 24P/C 0.20
Numbers
QuarterCallsPutsP/C
Q1 2024$572.3k$662.4k1.16
Q2 2024$6.0m$1.1m0.18
Q3 2024$2.0m$300.8k0.15
Q4 2024$230.7k$46.9k0.20

Biggest buyers

Alyeska Investment Group, L.P. New +3,979,205+4.0m
Rubric Capital Management LP New +1,973,870+2.0m
DIMENSIONAL FUND ADVISORS LP Added +580,323+580.3k
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND New +401,000+401.0k
Clearline Capital LP New +378,252+378.3k
Invenomic Capital Management LP Added +309,752+309.8k
Ararat Capital Management LP Added +269,346+269.3k
VANGUARD GROUP INC Added +205,562+205.6k
Schonfeld Strategic Advisors LLC New +186,352+186.4k
Vestcor Inc New +150,000+150.0k

Biggest sellers

P2 Capital Partners, LLC Reduced -2,544,317-2.5m
JPMORGAN CHASE & CO Reduced -1,168,729-1.2m
TimesSquare Capital Management, LLC Reduced -772,267-772.3k
Crestwood Capital Management, L.P. Sold out -650,738-650.7k
Aberdeen Group plc Reduced -376,829-376.8k
CITADEL ADVISORS LLC Reduced -353,886-353.9k
Sunriver Management LLC Reduced -350,432-350.4k
MORGAN STANLEY Reduced -324,687-324.7k
ALGERT GLOBAL LLC Reduced -314,792-314.8k
Balyasny Asset Management L.P. Sold out -262,188-262.2k

Biggest calls

CITADEL ADVISORS LLC Reduced $230.7k22.1k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Reduced $45.9k4.4k shares
SIMPLEX TRADING, LLC Reduced $1.0k100 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

No one currently above 5% in the filings since 19 Dec 2024.

Fell to 5% or below in the last year: GLAZER CAPITAL, LLC (4.2%, 2026-02-12), Vista Equity Partners Fund VI, L.P. (0.0%, 2025-12-29), Atlas Venture Fund VIII, L.P. (0.0%, 2025-12-23), Sunriver Management LLC (4.3%, 2025-11-13)

Holders, Q4 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VISTA EQUITY PARTNERS MANAGEMENT, LLC 40.44% of their portfolio San Francisco, CA 65,010,00165.0m $678.7m $678.7m 40.44% Unchanged
2 Atlas Venture Advisors, Inc. 51.19% of their portfolio BOSTON, MA 22,722,77022.7m $237.2m $237.2m 51.19% Unchanged
3 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 9,048,5469.0m $94.5m $94.5m 0.00% Added +205.6k +205,562
4 Sunriver Management LLC 9.11% of their portfolio GREENWICH, CT 7,291,0347.3m $76.1m $76.1m 9.11% Reduced -350.4k -350,432
5 BlackRock, Inc. 0.00% of their portfolio New York, NY 6,039,4736.0m $63.1m $63.1m 0.00% Added +34.1k +34,084
6 P2 Capital Partners, LLC 8.53% of their portfolio New York, NY 4,810,0004.8m $50.2m $50.2m 8.53% Reduced -2.5m -2,544,317
7 Alyeska Investment Group, L.P. 0.16% of their portfolio CHICAGO, IL 3,979,2054.0m $41.5m $41.5m 0.16% New
8 DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio AUSTIN, TX 3,789,9963.8m $39.6m $39.6m 0.01% Added +580.3k +580,323
9 Clearbridge Investments, LLC 0.02% of their portfolio NEW YORK, NY 2,729,4202.7m $28.5m $28.5m 0.02% Reduced -187.0k -187,007
10 Ararat Capital Management LP 9.51% of their portfolio WESTPORT, CT 2,281,9122.3m $23.8m $23.8m 9.51% Added +269.3k +269,346
11 TimesSquare Capital Management, LLC 0.30% of their portfolio NEW YORK, NY 2,000,1732.0m $20.9m $20.9m 0.30% Reduced -772.3k -772,267
12 Rubric Capital Management LP 0.37% of their portfolio NEW YORK, NY 1,973,8702.0m $20.6m $20.6m 0.37% New
13 Nuveen Asset Management, LLC 0.01% of their portfolio CHICAGO, IL 1,920,5231.9m $20.1m $20.1m 0.01% Added +15.4k +15,432
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,848,7381.8m $19.3m $19.3m 0.00% Added +14.1k +14,079
15 Aberdeen Group plc 0.03% of their portfolio EDINBURGH, X0 1,770,8271.8m $18.5m $18.5m 0.03% Reduced -376.8k -376,829
16 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 1,590,0571.6m $16.6m $16.6m 0.00% Added +15.4k +15,424
17 JACOBS LEVY EQUITY MANAGEMENT, INC 0.05% of their portfolio FLORHAM PARK, NJ 1,421,2371.4m $14.8m $14.8m 0.05% Reduced -253.0k -252,981
18 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 1,102,2991.1m $11.5m $11.5m 0.00% Reduced -35.6k -35,642
19 CenterBook Partners LP 0.64% of their portfolio GREENWICH, CT 1,019,0441.0m $10.6m $10.6m 0.64% Added +118.7k +118,719
20 FRONTIER CAPITAL MANAGEMENT CO LLC 0.10% of their portfolio Boston, MA 997,511997.5k $10.4m $10.4m 0.10% Reduced -1.8k -1,827
21 Invenomic Capital Management LP 0.53% of their portfolio BOSTON, MA 895,061895.1k $9.3m $9.3m 0.53% Added +309.8k +309,752
22 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 706,343706.3k $7.4m $7.4m 0.01% Reduced -353.9k -353,886
23 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 677,204677.2k $7.1m $7.1m 0.00% Added +67.0k +67,038
24 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 603,848603.8k $6.3m $6.3m 0.00% Added +7.9k +7,941
25 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 577,732577.7k $6.0m $6.0m 0.00% Reduced -324.7k -324,687
26 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 531,664531.7k $5.6m $5.6m 0.00% Reduced -16.6k -16,577
27 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 438,591438.6k $4.6m $4.6m 0.00% Added +109.9k +109,888
28 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 401,000401.0k $4.2m $4.2m 0.01% New
29 Clearline Capital LP 0.52% of their portfolio NEW YORK, NY 378,252378.3k $3.9m $3.9m 0.52% New
30 UBS Group AG 0.00% of their portfolio ZURICH, V8 342,078342.1k $3.6m $3.6m 0.00% Added +83.6k +83,630
31 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 339,367339.4k $3.5m $3.5m 0.00% Reduced -24.6k -24,632
32 Atom Investors LP 0.41% of their portfolio AUSTIN, TX 317,544317.5k $3.3m $3.3m 0.41% Reduced -20.6k -20,608
33 RICE HALL JAMES & ASSOCIATES, LLC 0.18% of their portfolio San Diego, CA 314,129314.1k $3.3m $3.3m 0.18% Added +148.1k +148,082
34 Repertoire Partners LP 6.41% of their portfolio NEW YORK, NY 284,707284.7k $3.0m $3.0m 6.41% Added +129.7k +129,707
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 266,327266.3k $2.8m $2.8m 0.00% Reduced -1.2m -1,168,729
36 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 251,091251.1k $2.6m $2.6m 0.00% Added +29.1k +29,145
37 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 242,559242.6k $2.5m $2.5m 0.00% Reduced -116.8k -116,811
38 272 Capital LP 2.26% of their portfolio DALLAS, TX 229,137229.1k $2.4m $2.4m 2.26% Reduced -34.1k -34,097
39 RENAISSANCE GROUP LLC 0.09% of their portfolio Covington, KY 208,963209.0k $2.2m $2.2m 0.09% Added +13.9k +13,884
40 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 207,600207.6k $2.2m $2.2m 0.00% Added +3.4k +3,400
41 PDT Partners, LLC 0.19% of their portfolio New York, NY 202,032202.0k $2.1m $2.1m 0.19% Reduced -81.2k -81,181
42 HERALD INVESTMENT MANAGEMENT Ltd 0.34% of their portfolio LONDON, X0 200,000200.0k $2.1m $2.1m 0.34% Unchanged
43 MONIMUS CAPITAL MANAGEMENT, LP 1.90% of their portfolio WOODBRIDGE, NJ 193,482193.5k $2.0m $2.0m 1.90% First filing
44 Horrell Capital Management, Inc. 0.58% of their portfolio LITTLE ROCK, AR 190,000190.0k $2.0m $2.0m 0.58% Added +40.0k +40,000
45 Circumference Group LLC 1.85% of their portfolio Little Rock, AR 190,000190.0k $2.0m $2.0m 1.85% Added +40.0k +40,000
46 Schonfeld Strategic Advisors LLC 0.01% of their portfolio NEW YORK, NY 186,352186.4k $1.9m $1.9m 0.01% New
47 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 171,378171.4k $1.8m $1.8m 0.00% Added +128.1k +128,056
48 one8zero8, LLC 0.37% of their portfolio GREENSBORO, NC 163,050163.1k $1.7m $1.7m 0.37% First filing
49 Swiss National Bank 0.00% of their portfolio ZURICH, V8 158,700158.7k $1.7m $1.7m 0.00% Added +18.1k +18,100
50 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 155,010155.0k $1.6m $1.6m 0.00% Added +46.4k +46,395
51 Vestcor Inc 0.05% of their portfolio FREDERICTON, A3 150,000150.0k $1.6m $1.6m 0.05% New
52 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 142,137142.1k $1.5m $1.5m 0.00% Added +14.4k +14,404
53 ESSEX INVESTMENT MANAGEMENT CO LLC 0.24% of their portfolio BOSTON, MA 129,301129.3k $1.3m $1.3m 0.24% Reduced -19.2k -19,155
54 BOOTHBAY FUND MANAGEMENT, LLC 0.04% of their portfolio NEW YORK, NY 117,707117.7k $1.2m $1.2m 0.04% Reduced -58.0k -58,027
55 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 109,192109.2k $1.1m $1.1m 0.00% Reduced -1.3k -1,257
56 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 107,945107.9k $1.1m $1.1m 0.00% Reduced -40.7k -40,687
57 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 107,450107.5k $1.1m $1.1m 0.00% Reduced -1.3k -1,275
58 Factor Wealth Management LTD 0.34% of their portfolio CHICAGO, IL 99,32499.3k $1.0m $1.0m 0.34% First filing
59 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 94,14394.1k $982.9k $982.9k 0.00% Reduced -29.9k -29,928
60 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 87,96688.0k $918.4k $918.4k 0.00% Reduced -2.9k -2,877
61 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 85,08985.1k $888.3k $888.3k 0.00% Added +7.6k +7,587
62 Legal & General Group Plc 0.00% of their portfolio London, X0 83,85783.9k $875.5k $875.5k 0.00% Added +13.9k +13,945
63 STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.00% of their portfolio TALLAHASSEE, FL 82,97683.0k $866.3k $866.3k 0.00% Added +2.2k +2,212
64 ALGERT GLOBAL LLC 0.02% of their portfolio SAN FRANCISCO, CA 82,77982.8k $864.2k $864.2k 0.02% Reduced -314.8k -314,792
65 Focus Partners Wealth 0.00% of their portfolio ST LOUIS, MO 80,34480.3k $838.8k $838.8k 0.00% Added +20.3k +20,344
66 Quinn Opportunity Partners LLC 0.06% of their portfolio CHARLOTTESVILLE, VA 80,00080.0k $835.2k $835.2k 0.06% New
67 Militia Capital Partners, LP 0.38% of their portfolio AUSTIN, TX 78,00078.0k $814.3k $814.3k 0.38% First filing
68 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 77,31477.3k $807.2k $807.2k 0.00% First filing
69 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 76,58076.6k $799.5k $799.5k 0.00% Unchanged
70 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 74,87474.9k $781.7k $781.7k 0.00% Added +6.6k +6,564
71 CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio TORONTO ONTARIO, A6 72,00072.0k $751.7k $751.7k 0.00% Unchanged
72 Eisler Capital Management Ltd. 0.02% of their portfolio LONDON, X0 70,00070.0k $740.2k $740.2k 0.02% First filing
73 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 66,52666.5k $694.5k $694.5k 0.00% Added +13.4k +13,402
74 NINE MASTS CAPITAL Ltd 0.12% of their portfolio CENTRAL, K3 64,29164.3k $671.2k $671.2k 0.12% New
75 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 64,12464.1k $669.5k $669.5k 0.00% New
76 JENNISON ASSOCIATES LLC 0.00% of their portfolio NEW YORK, NY 63,53863.5k $663.3k $663.3k 0.00% Added +2.0k +2,046
77 CANTOR FITZGERALD, L. P. 0.02% of their portfolio NEW YORK, NY 61,00061.0k $636.8k $636.8k 0.02% New
78 Tejara Capital Ltd 0.41% of their portfolio London, X0 60,00060.0k $626.4k $626.4k 0.41% New
79 NEXPOINT ASSET MANAGEMENT, L.P. 0.07% of their portfolio Dallas, TX 53,66153.7k $560.2k $560.2k 0.07% New
80 AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio Greenwich, CT 53,44553.4k $558.0k $558.0k 0.00% Reduced -115.3k -115,273
81 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 50,54450.5k $527.7k $527.7k 0.00% Added +7.2k +7,229
82 INTECH INVESTMENT MANAGEMENT LLC 0.01% of their portfolio WEST PALM BEACH, FL 49,44449.4k $516.2k $516.2k 0.01% Added +31.0k +30,994
83 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 44,92144.9k $469.0k $469.0k 0.00% Added +4.1k +4,123
84 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 41,51941.5k $433.5k $433.5k 0.00% Added +1.8k +1,832
85 Legato Capital Management LLC 0.05% of their portfolio San Francisco, CA 38,72538.7k $404.3k $404.3k 0.05% Reduced -12.2k -12,163
86 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 38,52038.5k $402.1k $402.1k 0.00% Reduced -5.2k -5,155
87 LMR Partners LLP 0.01% of their portfolio LONDON, X0 38,07938.1k $397.5k $397.5k 0.01% New
88 EntryPoint Capital, LLC 0.16% of their portfolio NEW YORK, NY 37,08337.1k $387.1k $387.1k 0.16% New
89 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 36,63336.6k $382.4k $382.4k 0.00% Reduced -1.0k -1,047
90 Corebridge Financial, Inc. 0.00% of their portfolio HOUSTON, TX 36,28836.3k $378.8k $378.8k 0.00% Reduced -2.4k -2,352
91 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 34,39034.4k $359.0k $359.0k 0.00% Added +23.8k +23,813
92 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 32,88032.9k $343.3k $343.3k 0.00% Added +2.7k +2,695
93 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 31,80731.8k $332.1k $332.1k 0.00% Added +2.2k +2,188
94 Thrivent Financial for Lutherans 0.00% of their portfolio Minneapolis, MN 31,41731.4k $328.0k $328.0k 0.00% Reduced -242.6k -242,582
95 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 30,69030.7k $320.0k $320.0k 0.00% Reduced -7.0k -7,040
96 HARVEST MANAGEMENT LLC 0.16% of their portfolio New York, NY 30,00030.0k $313.2k $313.2k 0.16% New
97 OPPENHEIMER & CO INC 0.00% of their portfolio NEW YORK, NY 28,04028.0k $292.7k $292.7k 0.00% Added +2.1k +2,069
98 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 27,99728.0k $293.0k $293.0k 0.00% Added +4.1k +4,099
99 STONERIDGE INVESTMENT PARTNERS LLC 0.10% of their portfolio RADNOR, PA 27,80827.8k $290.0k $290.0k 0.10% Added +16.2k +16,208
100 Centiva Capital, LP 0.01% of their portfolio New York, NY 25,00025.0k $261.0k $261.0k 0.01% Reduced -11.9k -11,881