Vault-13

INTEGRAL AD SCIENCE HLDNG CO IAS

COM · Common Stock · CUSIP 45828L108 · ISIN US45828L1089

166 institutional holders -8 vs Q4 2023
153,168,819153.2m shares reported held*
$1.5bnreported value*
33 new 67 added 48 reduced 38 sold out net sold ≈ $23.9m (-2.4m 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. Holder counts are more reliable. Implied quarter-end price ≈ $9.97. Options: 5 managers hold calls ($572.3k notional), 5 hold puts ($662.4k).

Trends to Q1 2024

Institutional holders

Managers reporting a position, each quarter

0100200Q3 22: 104Q4 22: 108Q1 23: 117Q2 23: 169Q3 23: 165Q4 23: 174Q1 24: 166166Q3 22Q1 23Q3 23Q1 24
Numbers
QuarterHolders
Q3 2022104
Q4 2022108
Q1 2023117
Q2 2023169
Q3 2023165
Q4 2023174
Q1 2024166

Buyers vs sellers

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

Bought or addedCut or sold out
2000200Q4 22: 60 bought or addedQ4 22: 48 cut or sold outQ4 22Q1 23: 57 bought or addedQ1 23: 56 cut or sold outQ1 23Q2 23: 118 bought or addedQ2 23: 49 cut or sold outQ2 23Q3 23: 103 bought or addedQ3 23: 80 cut or sold outQ3 23Q4 23: 101 bought or addedQ4 23: 68 cut or sold outQ4 23Q1 24: 100 bought or addedQ1 24: 86 cut or sold outQ1 24
Numbers
QuarterBought or addedCut or sold out
Q4 20226048
Q1 20235756
Q2 202311849
Q3 202310380
Q4 202310168
Q1 202410086

Calls vs puts

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

CallsPuts
$0$200k$400k$600k$800kQ2 23 calls: $321.8kQ2 23 puts: $310.7kQ2 23P/C 0.97Q3 23 calls: $286.5kQ3 23 puts: $203.6kQ3 23P/C 0.71Q4 23 calls: $329.3kQ4 23 puts: $401.2kQ4 23P/C 1.22Q1 24 calls: $572.3kQ1 24 puts: $662.4kQ1 24P/C 1.16
Numbers
QuarterCallsPutsP/C
Q2 2023$321.8k$310.7k0.97
Q3 2023$286.5k$203.6k0.71
Q4 2023$329.3k$401.2k1.22
Q1 2024$572.3k$662.4k1.16

Biggest buyers

Sunriver Management LLC Added +4,494,322+4.5m
P2 Capital Partners, LLC Added +1,905,600+1.9m
CenterBook Partners LP Added +1,607,554+1.6m
BlackRock Inc. Added +992,569+992.6k
DIMENSIONAL FUND ADVISORS LP Added +853,126+853.1k
VANGUARD GROUP INC Added +566,982+567.0k
Aperture Investors, LLC Added +506,376+506.4k
Concentric Capital Strategies, LP New +434,348+434.3k
Clearbridge Investments, LLC Added +412,044+412.0k
SCALAR GAUGE MANAGEMENT, LLC New +362,769+362.8k

Biggest sellers

LORD, ABBETT & CO. LLC Sold out -5,453,894-5.5m
MILLENNIUM MANAGEMENT LLC Reduced -3,948,576-3.9m
GOLDMAN SACHS GROUP INC Reduced -2,438,541-2.4m
VISTA EQUITY PARTNERS MANAGEMENT, LLC Reduced -1,650,000-1.6m
Engle Capital Management, L.P. Sold out -945,000-945.0k
MORGAN STANLEY Reduced -797,130-797.1k
TWO SIGMA INVESTMENTS, LP Reduced -540,231-540.2k
RENAISSANCE TECHNOLOGIES LLC Reduced -413,900-413.9k
Cubist Systematic Strategies, LLC Sold out -385,647-385.6k
Granite Investment Partners, LLC Sold out -379,268-379.3k

Biggest calls

WOLVERINE TRADING, LLC New $433.7k43.5k shares
GROUP ONE TRADING LLC New $108.7k10.9k shares
SIMPLEX TRADING, LLC Added $20.0k2.1k shares
CITADEL ADVISORS LLC Reduced $10.0k1.0k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $260.2k26.1k shares
CITADEL ADVISORS LLC Added $247.3k24.8k shares
SIMPLEX TRADING, LLC Reduced $137.0k13.8k shares
GROUP ONE TRADING LLC New $17.9k1.8k 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, Q1 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VISTA EQUITY PARTNERS MANAGEMENT, LLC 17.34% of their portfolio San Francisco, CA 65,010,00165.0m $648.1m $648.1m 17.34% Reduced -1.6m -1,650,000
2 Atlas Venture Advisors, Inc. 45.08% of their portfolio BOSTON, MA 22,722,77022.7m $226.5m $226.5m 45.08% Unchanged
3 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 8,673,2298.7m $86.5m $86.5m 0.00% Added +567.0k +566,982
4 Sunriver Management LLC 9.08% of their portfolio GREENWICH, CT 6,969,6077.0m $69.5m $69.5m 9.08% Added +4.5m +4,494,322
5 BlackRock Inc. 0.00% of their portfolio New York, NY 5,433,3595.4m $54.2m $54.2m 0.00% Added +992.6k +992,569
6 Clearbridge Investments, LLC 0.03% of their portfolio NEW YORK, NY 3,906,6523.9m $38.9m $38.9m 0.03% Added +412.0k +412,044
7 DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio AUSTIN, TX 3,230,3983.2m $32.2m $32.2m 0.01% Added +853.1k +853,126
8 TimesSquare Capital Management, LLC 0.43% of their portfolio NEW YORK, NY 2,969,2783.0m $29.6m $29.6m 0.43% Added +268.3k +268,310
9 P2 Capital Partners, LLC 3.16% of their portfolio New York, NY 2,680,0002.7m $26.7m $26.7m 3.16% Added +1.9m +1,905,600
10 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 2,362,1102.4m $23.6m $23.6m 0.00% Reduced -797.1k -797,130
11 CenterBook Partners LP 1.35% of their portfolio GREENWICH, CT 1,955,0762.0m $19.5m $19.5m 1.35% Added +1.6m +1,607,554
12 Nuveen Asset Management, LLC 0.01% of their portfolio CHICAGO, IL 1,942,6941.9m $19.4m $19.4m 0.01% Added +172.1k +172,115
13 Aberdeen Group plc 0.03% of their portfolio EDINBURGH, X0 1,702,5681.7m $17.0m $17.0m 0.03% Reduced -54.5k -54,546
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,594,5851.6m $15.9m $15.9m 0.00% Added +253.4k +253,426
15 Aperture Investors, LLC 2.03% of their portfolio New York, NY 1,590,4561.6m $15.9m $15.9m 2.03% Added +506.4k +506,376
16 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 1,429,0541.4m $14.2m $14.2m 0.00% Added +275.6k +275,637
17 JACOBS LEVY EQUITY MANAGEMENT, INC 0.06% of their portfolio FLORHAM PARK, NJ 1,246,5561.2m $12.4m $12.4m 0.06% Added +55.8k +55,844
18 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 1,104,3981.1m $11.0m $11.0m 0.01% Reduced -3.9m -3,948,576
19 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 1,035,0851.0m $10.3m $10.3m 0.01% Reduced -189.4k -189,439
20 FRONTIER CAPITAL MANAGEMENT CO LLC 0.09% of their portfolio Boston, MA 1,016,0291.0m $10.1m $10.1m 0.09% Added +163.0k +162,970
21 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 733,148733.1k $7.3m $7.3m 0.00% Added +177.3k +177,268
22 TWO SIGMA ADVISERS, LP 0.02% of their portfolio NEW YORK, NY 685,000685.0k $6.8m $6.8m 0.02% Reduced -206.1k -206,100
23 BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp 0.04% of their portfolio VICTORIA, A1 617,500617.5k $6.2m $6.2m 0.04% Added +115.0k +115,000
24 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 595,211595.2k $5.9m $5.9m 0.00% Added +110.8k +110,760
25 Thrivent Financial for Lutherans 0.01% of their portfolio Minneapolis, MN 585,326585.3k $5.8m $5.8m 0.01% Reduced -39.0k -39,037
26 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 533,999534.0k $5.3m $5.3m 0.00% Added +44.2k +44,181
27 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 531,787531.8k $5.3m $5.3m 0.00% Added +176.3k +176,337
28 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 530,356530.4k $5.3m $5.3m 0.00% Added +9.2k +9,216
29 Concentric Capital Strategies, LP 0.28% of their portfolio Stamford, CT 434,348434.3k $4.3m $4.3m 0.28% New
30 ALGERT GLOBAL LLC 0.16% of their portfolio SAN FRANCISCO, CA 418,874418.9k $4.2m $4.2m 0.16% Added +213.1k +213,101
31 Squarepoint Ops LLC 0.02% of their portfolio NEW YORK, NY 397,765397.8k $4.0m $4.0m 0.02% Added +324.4k +324,399
32 Qube Research & Technologies Ltd 0.01% of their portfolio LONDON, X0 377,867377.9k $3.8m $3.8m 0.01% Reduced -7.3k -7,342
33 SCALAR GAUGE MANAGEMENT, LLC 2.79% of their portfolio DALLAS, TX 362,769362.8k $3.6m $3.6m 2.79% New
34 JUPITER ASSET MANAGEMENT LTD 0.03% of their portfolio London, X0 326,677326.7k $3.3m $3.3m 0.03% New
35 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 301,470301.5k $3.0m $3.0m 0.00% Reduced -2.4m -2,438,541
36 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 252,639252.6k $2.5m $2.5m 0.00% Added +235.8k +235,775
37 Ghisallo Capital Management LLC 0.28% of their portfolio BOSTON, MA 250,000250.0k $2.5m $2.5m 0.28% Added +166.3k +166,341
38 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 243,061243.1k $2.4m $2.4m 0.00% Added +53.3k +53,288
39 272 Capital LP 0.95% of their portfolio DALLAS, TX 239,078239.1k $2.4m $2.4m 0.95% New
40 Allianz Asset Management GmbH 0.00% of their portfolio MUNICH, 2M 235,334235.3k $2.3m $2.3m 0.00% Added +27.2k +27,212
41 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 231,734231.7k $2.3m $2.3m 0.01% Reduced -540.2k -540,231
42 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 210,895210.9k $2.1m $2.1m 0.00% Added +18.6k +18,601
43 TUDOR INVESTMENT CORP ET AL 0.03% of their portfolio STAMFORD, CT 209,864209.9k $2.1m $2.1m 0.03% Added +172.2k +172,212
44 Crestwood Capital Management, L.P. 1.23% of their portfolio NEW YORK, NY 200,000200.0k $2.0m $2.0m 1.23% New
45 HERALD INVESTMENT MANAGEMENT Ltd 0.32% of their portfolio LONDON, X0 200,000200.0k $2.0m $2.0m 0.32% New
46 Trexquant Investment LP 0.04% of their portfolio STAMFORD, CT 180,987181.0k $1.8m $1.8m 0.04% New
47 DARK FOREST CAPITAL MANAGEMENT LP 0.30% of their portfolio NEW YORK, NY 177,858177.9k $1.8m $1.8m 0.30% New
48 RENAISSANCE GROUP LLC 0.06% of their portfolio Covington, KY 165,305165.3k $1.6m $1.6m 0.06% New
49 JANUS HENDERSON GROUP PLC 0.00% of their portfolio LONDON, X0 162,596162.6k $1.6m $1.6m 0.00% Added +142.9k +142,915
50 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 158,308158.3k $1.6m $1.6m 0.00% Added +85.4k +85,411
51 J. Goldman & Co LP 0.07% of their portfolio NEW YORK, NY 156,954157.0k $1.6m $1.6m 0.07% New
52 ExodusPoint Capital Management, LP 0.02% of their portfolio NEW YORK, NY 154,080154.1k $1.5m $1.5m 0.02% Added +99.0k +98,999
53 UBS Group AG 0.00% of their portfolio ZURICH, V8 147,210147.2k $1.5m $1.5m 0.00% Added +10.0k +9,967
54 BOOTHBAY FUND MANAGEMENT, LLC 0.04% of their portfolio NEW YORK, NY 144,189144.2k $1.4m $1.4m 0.04% New
55 Swiss National Bank 0.00% of their portfolio ZURICH, V8 140,600140.6k $1.4m $1.4m 0.00% Added +32.6k +32,600
56 FIRST TRUST ADVISORS LP 0.00% of their portfolio Wheaton, IL 129,408129.4k $1.3m $1.3m 0.00% Added +33.7k +33,705
57 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 127,561127.6k $1.3m $1.3m 0.00% Reduced -88.5k -88,485
58 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 116,048116.0k $1.2m $1.2m 0.00% Reduced -2.2k -2,241
59 Gratus Capital, LLC 0.05% of their portfolio ATLANTA, GA 110,040110.0k $1.1m $1.1m 0.05% New
60 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 99,66299.7k $993.6k $993.6k 0.00% Added +81.6k +81,631
61 HarbourVest Partners LLC 0.42% of their portfolio Boston, MA 91,77991.8k $915.0k $915.0k 0.42% Unchanged
62 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 89,80989.8k $895.4k $895.4k 0.00% Added +16.2k +16,247
63 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio JUPITER, FL 75,57375.6k $753.5k $753.5k 0.00% Added +30.8k +30,817
64 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 75,55275.6k $753.2k $753.2k 0.00% Added +15.1k +15,086
65 Nebula Research & Development LLC 0.16% of their portfolio New York, NY 73,90673.9k $736.8k $736.8k 0.16% Reduced -14.2k -14,163
66 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 73,34973.3k $731.3k $731.3k 0.00% Unchanged
67 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 72,98873.0k $727.7k $727.7k 0.00% Added +40.3k +40,343
68 CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio TORONTO ONTARIO, A6 72,00072.0k $717.8k $717.8k 0.00% Reduced -93.0k -93,000
69 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 70,83270.8k $706.2k $706.2k 0.00% Added +14.0k +13,997
70 FORMULA GROWTH LTD 0.22% of their portfolio MONTREAL, A8 70,00070.0k $697.9k $697.9k 0.22% New
71 Man Group plc 0.00% of their portfolio LONDON, X0 68,79068.8k $685.8k $685.8k 0.00% Reduced -264.2k -264,239
72 Legal & General Group Plc 0.00% of their portfolio London, X0 67,36867.4k $671.6k $671.6k 0.00% Added +14.9k +14,890
73 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 64,80064.8k $646.0k $646.0k 0.00% Reduced -413.9k -413,900
74 Kodai Capital Management LP 0.02% of their portfolio CHICAGO, IL 64,45664.5k $642.6k $642.6k 0.02% New
75 RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio ST PETERSBURG, FL 59,42259.4k $592.4k $592.4k 0.00% Added +18.9k +18,887
76 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 59,40059.4k $592.0k $592.0k 0.00% Added +21.6k +21,600
77 III Capital Management 0.03% of their portfolio BOCA RATON, FL 59,32759.3k $591.5k $591.5k 0.03% New
78 PDT Partners, LLC 0.05% of their portfolio New York, NY 58,19458.2k $580.2k $580.2k 0.05% Reduced -24.2k -24,194
79 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 55,92755.9k $563.7k $563.7k 0.00% Added +32.9k +32,869
80 PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio DES MOINES, IA 55,91955.9k $557.5k $557.5k 0.00% Added +38.4k +38,376
81 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 53,10753.1k $529.5k $529.5k 0.00% Reduced -118.7k -118,695
82 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 51,00051.0k $508.5k $508.5k 0.00% Unchanged
83 Graham Capital Management, L.P. 0.01% of their portfolio ROWAYTON, CT 50,86250.9k $507.1k $507.1k 0.01% Reduced -21.1k -21,115
84 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 47,40747.4k $472.6k $472.6k 0.00% Reduced -4.4k -4,392
85 Senvest Management, LLC 0.02% of their portfolio New York, NY 46,84046.8k $467.0k $467.0k 0.02% New
86 Atom Investors LP 0.06% of their portfolio AUSTIN, TX 46,02646.0k $458.9k $458.9k 0.06% New
87 Quantbot Technologies LP 0.02% of their portfolio NEW YORK, NY 42,82642.8k $427.0k $427.0k 0.02% Reduced -16.4k -16,448
88 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 42,74242.7k $426.1k $426.1k 0.00% Reduced -32.5k -32,528
89 GSA CAPITAL PARTNERS LLP 0.03% of their portfolio LONDON, X0 39,28139.3k $392.0k $392.0k 0.03% New
90 PRELUDE CAPITAL MANAGEMENT, LLC 0.03% of their portfolio NEW YORK, NY 38,12438.1k $380.1k $380.1k 0.03% Added +22.0k +21,979
91 HSBC HOLDINGS PLC 0.00% of their portfolio LONDON, X0 37,75437.8k $376.4k $376.4k 0.00% Added +10.2k +10,152
92 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 36,83836.8k $367.3k $367.3k 0.00% Reduced -140.2k -140,215
93 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 35,33435.3k $352.3k $352.3k 0.00% Added +9.5k +9,537
94 Pearl River Capital, LLC 0.06% of their portfolio Niles, MI 35,31035.3k $352.0k $352.0k 0.06% New
95 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 33,22833.2k $331.3k $331.3k 0.00% Added +9.1k +9,092
96 CAPSTONE INVESTMENT ADVISORS, LLC 0.01% of their portfolio NEW YORK, NY 32,71332.7k $326.1k $326.1k 0.01% New
97 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 32,06432.1k $319.7k $319.7k 0.00% Added +6.9k +6,948
98 SHERBROOKE PARK ADVISERS LLC 0.06% of their portfolio WHITE PLAINS, NY 31,04731.0k $309.5k $309.5k 0.06% New
99 Dynamic Technology Lab Private Ltd 0.03% of their portfolio SINGAPORE, U0 30,83230.8k $308.0k $308.0k 0.03% Reduced -20.4k -20,420
100 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 30,56830.6k $410.5k $410.5k 0.00% Unchanged