Vault-13

INTEGRAL AD SCIENCE HLDNG CO IAS

COM · Common Stock · CUSIP 45828L108 · ISIN US45828L1089

165 institutional holders -4 vs Q2 2023
152,913,121152.9m shares reported held*
$1.8bnreported value*
30 new 73 added 47 reduced 33 sold out net sold ≈ $3.7m (-657.2k 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 ($53.5k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $11.92. Options: 4 managers hold calls ($286.5k notional), 3 hold puts ($203.6k).

Trends to Q3 2023

Institutional holders

Managers reporting a position, each quarter

0100200Q3 22: 104Q4 22: 108Q1 23: 117Q2 23: 169Q3 23: 165165Q3 22Q4 22Q1 23Q2 23Q3 23
Numbers
QuarterHolders
Q3 2022104
Q4 2022108
Q1 2023117
Q2 2023169
Q3 2023165

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 23
Numbers
QuarterBought or addedCut or sold out
Q4 20226048
Q1 20235756
Q2 202311849
Q3 202310380

Calls vs puts

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

CallsPuts
$0$100k$200k$300k$400kQ4 22 calls: $17.6kQ4 22 puts: $0Q4 22P/C 0.00Q1 23 calls: $66.8kQ1 23 puts: $12.0kQ1 23P/C 0.18Q2 23 calls: $321.8kQ2 23 puts: $310.7kQ2 23P/C 0.97Q3 23 calls: $286.5kQ3 23 puts: $203.6kQ3 23P/C 0.71
Numbers
QuarterCallsPutsP/C
Q4 2022$17.6k$00.00
Q1 2023$66.8k$12.0k0.18
Q2 2023$321.8k$310.7k0.97
Q3 2023$286.5k$203.6k0.71

Biggest buyers

Sunriver Management LLC Added +2,193,478+2.2m
VANGUARD GROUP INC Added +966,280+966.3k
DIMENSIONAL FUND ADVISORS LP Added +679,264+679.3k
BlackRock Inc. Added +647,671+647.7k
TimesSquare Capital Management, LLC Added +605,824+605.8k
JACOBS LEVY EQUITY MANAGEMENT, INC Added +547,856+547.9k
Qube Research & Technologies Ltd New +466,586+466.6k
Nuveen Asset Management, LLC Added +460,194+460.2k
PUTNAM INVESTMENTS LLC Added +416,358+416.4k
Man Group plc New +360,599+360.6k

Biggest sellers

Schonfeld Strategic Advisors LLC Reduced -1,298,400-1.3m
FMR LLC Reduced -1,134,559-1.1m
LORD, ABBETT & CO. LLC Reduced -1,015,610-1.0m
AMERIPRISE FINANCIAL INC Reduced -664,296-664.3k
CITADEL ADVISORS LLC Reduced -624,101-624.1k
MORGAN STANLEY Reduced -617,004-617.0k
PRUDENTIAL FINANCIAL INC Reduced -589,010-589.0k
ALLIANCEBERNSTEIN L.P. Reduced -588,373-588.4k
Jefferies Financial Group Inc. Reduced -511,020-511.0k
Engle Capital Management, L.P. Reduced -429,000-429.0k

Biggest calls

CITADEL ADVISORS LLC Added $249.7k21.0k shares
GROUP ONE TRADING LLC New $23.8k2.0k shares
SIMPLEX TRADING, LLC New $13.0k1.1k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

SIMPLEX TRADING, LLC Added $181.0k15.3k shares
CITADEL ADVISORS LLC Reduced $22.6k1.9k 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, Q3 2023

#ManagerLocationShares Value% of their portfolioChangeShares change
1 VISTA EQUITY PARTNERS MANAGEMENT, LLC 23.09% of their portfolio San Francisco, CA 77,660,00177.7m $923.4m $923.4m 23.09% Unchanged
2 Atlas Venture Advisors, Inc. 57.41% of their portfolio BOSTON, MA 22,722,77022.7m $270.2m $270.2m 57.41% Unchanged
3 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 7,325,7787.3m $87.1m $87.1m 0.00% Added +966.3k +966,280
4 LORD, ABBETT & CO. LLC 0.12% of their portfolio JERSEY CITY, NJ 5,278,4785.3m $62.8m $62.8m 0.12% Reduced -1.0m -1,015,610
5 BlackRock Inc. 0.00% of their portfolio New York, NY 3,959,1604.0m $47.1m $47.1m 0.00% Added +647.7k +647,671
6 Sunriver Management LLC 8.48% of their portfolio GREENWICH, CT 3,770,3303.8m $44.8m $44.8m 8.48% Added +2.2m +2,193,478
7 Clearbridge Investments, LLC 0.04% of their portfolio NEW YORK, NY 3,279,9153.3m $39.0m $39.0m 0.04% Added +191.1k +191,075
8 TimesSquare Capital Management, LLC 0.46% of their portfolio NEW YORK, NY 2,486,7482.5m $29.6m $29.6m 0.46% Added +605.8k +605,824
9 DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio AUSTIN, TX 2,154,6582.2m $25.6m $25.6m 0.01% Added +679.3k +679,264
10 Engle Capital Management, L.P. 6.04% of their portfolio GREENWICH, CT 1,400,0001.4m $16.6m $16.6m 6.04% Reduced -429.0k -429,000
11 Nuveen Asset Management, LLC 0.01% of their portfolio CHICAGO, IL 1,359,1541.4m $16.2m $16.2m 0.01% Added +460.2k +460,194
12 Aperture Investors, LLC 2.29% of their portfolio New York, NY 1,213,1141.2m $14.4m $14.4m 2.29% Added +279.8k +279,825
13 JACOBS LEVY EQUITY MANAGEMENT, INC 0.08% of their portfolio FLORHAM PARK, NJ 1,167,3921.2m $13.9m $13.9m 0.08% Added +547.9k +547,856
14 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 1,164,9371.2m $13.9m $13.9m 0.00% Added +207.8k +207,823
15 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 1,055,6271.1m $12.6m $12.6m 0.00% Reduced -617.0k -617,004
16 CITADEL ADVISORS LLC 0.01% of their portfolio MIAMI, FL 923,034923.0k $11.0m $11.0m 0.01% Reduced -624.1k -624,101
17 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 886,390886.4k $10.5m $10.5m 0.00% Added +130.0k +129,987
18 FRONTIER CAPITAL MANAGEMENT CO LLC 0.11% of their portfolio Boston, MA 851,916851.9k $10.1m $10.1m 0.11% Added +133.2k +133,226
19 TWO SIGMA ADVISERS, LP 0.02% of their portfolio NEW YORK, NY 803,300803.3k $9.6m $9.6m 0.02% Added +55.5k +55,500
20 RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio NEW YORK, NY 667,100667.1k $7.9m $7.9m 0.01% Added +272.2k +272,200
21 TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio NEW YORK, NY 608,377608.4k $7.2m $7.2m 0.02% Added +97.9k +97,862
22 VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio JUPITER, FL 490,932490.9k $5.8m $5.8m 0.03% Added +135.7k +135,736
23 Qube Research & Technologies Ltd 0.02% of their portfolio LONDON, X0 466,586466.6k $5.5m $5.5m 0.02% New
24 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 465,621465.6k $5.5m $5.5m 0.00% Added +81.1k +81,111
25 BRITISH COLUMBIA INVESTMENT MANAGEMENT Corp 0.05% of their portfolio VICTORIA, A1 460,000460.0k $5.5m $5.5m 0.05% Added +70.0k +70,000
26 CenterBook Partners LP 0.67% of their portfolio GREENWICH, CT 454,995455.0k $5.4m $5.4m 0.67% Added +289.3k +289,341
27 PUTNAM INVESTMENTS LLC 0.01% of their portfolio BOSTON, MA 434,552434.6k $5.2m $5.2m 0.01% Added +416.4k +416,358
28 Portolan Capital Management, LLC 0.48% of their portfolio BOSTON, MA 433,855433.9k $5.2m $5.2m 0.48% Added +295.1k +295,068
29 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 398,422398.4k $4.7m $4.7m 0.00% Added +65.2k +65,160
30 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 388,597388.6k $4.6m $4.6m 0.00% Added +170.4k +170,381
31 Man Group plc 0.01% of their portfolio LONDON, X0 360,599360.6k $4.3m $4.3m 0.01% New
32 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 355,308355.3k $4.2m $4.2m 0.00% Reduced -588.4k -588,373
33 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 337,118337.1k $4.0m $4.0m 0.01% Reduced -70.4k -70,434
34 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 326,844326.8k $3.9m $3.9m 0.00% Added +77.3k +77,284
35 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 317,531317.5k $3.8m $3.8m 0.00% Added +21.6k +21,563
36 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 299,200299.2k $3.6m $3.6m 0.00% Added +104.8k +104,782
37 MARSHALL WACE, LLP 0.01% of their portfolio LONDON, X0 278,432278.4k $3.3m $3.3m 0.01% Reduced -248.3k -248,289
38 Russell Investments Group, Ltd. 0.01% of their portfolio Seattle, WA 245,190245.2k $2.9m $2.9m 0.01% Added +148.5k +148,469
39 Granite Investment Partners, LLC 0.12% of their portfolio EL SEGUNDO, CA 241,592241.6k $2.9m $2.9m 0.12% New
40 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 233,176233.2k $2.8m $2.8m 0.00% Reduced -309.7k -309,734
41 iA Global Asset Management Inc. 0.07% of their portfolio QUEBEC, A8 232,420232.4k $2.8m $2.8m 0.07% Added +51.5k +51,480
42 NORGES BANK 0.00% of their portfolio OSLO, Q8 231,300231.3k $2.8m $2.8m 0.00% Reduced -294.3k -294,348
43 Thrivent Financial for Lutherans 0.01% of their portfolio Minneapolis, MN 206,046206.0k $2.5m $2.5m 0.01% New
44 Cubist Systematic Strategies, LLC 0.03% of their portfolio STAMFORD, CT 199,892199.9k $2.4m $2.4m 0.03% Added +84.9k +84,915
45 Advantage Alpha Capital Partners LP 0.47% of their portfolio SAN FRANCISCO, CA 190,084190.1k $2.3m $2.3m 0.47% New
46 PRUDENTIAL FINANCIAL INC 0.00% of their portfolio NEWARK, NJ 186,840186.8k $2.2m $2.2m 0.00% Reduced -589.0k -589,010
47 Investors Towarzystwo Funduszy Inwestycyjnych Spolka Akcyjna 1.15% of their portfolio WARSAW, R9 180,400180.4k $2.1m $2.1m 1.15% Added +20.4k +20,360
48 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 171,355171.4k $2.0m $2.0m 0.00% Added +38.3k +38,348
49 Walleye Capital LLC 0.03% of their portfolio NEW YORK, NY 156,016156.0k $1.9m $1.9m 0.03% Reduced -307.4k -307,378
50 Graham Capital Management, L.P. 0.05% of their portfolio ROWAYTON, CT 153,915153.9k $1.8m $1.8m 0.05% New
51 UBS Group AG 0.00% of their portfolio ZURICH, V8 147,576147.6k $1.8m $1.8m 0.00% Added +115.8k +115,822
52 Allianz Asset Management GmbH 0.00% of their portfolio MUNICH, 2M 132,088132.1k $1.6m $1.6m 0.00% New
53 TUDOR INVESTMENT CORP ET AL 0.02% of their portfolio STAMFORD, CT 130,446130.4k $1.6m $1.6m 0.02% Reduced -161.1k -161,056
54 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 126,711126.7k $1.5m $1.5m 0.00% Reduced -3.5k -3,528
55 Swiss National Bank 0.00% of their portfolio ZURICH, V8 119,200119.2k $1.4m $1.4m 0.00% Added +35.1k +35,100
56 ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio BOSTON, MA 118,929118.9k $1.4m $1.4m 0.00% Unchanged
57 TEACHER RETIREMENT SYSTEM OF TEXAS 0.01% of their portfolio AUSTIN, TX 101,028101.0k $1.2m $1.2m 0.01% Added +55.0k +55,027
58 Jump Financial, LLC 0.04% of their portfolio Chicago, IL 100,706100.7k $1.2m $1.2m 0.04% Reduced -43.1k -43,126
59 CHARTWELL INVESTMENT PARTNERS, LLC 0.04% of their portfolio BERYWN, PA 96,61296.6k $1.1m $1.1m 0.04% Reduced -13.0k -12,988
60 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 95,83195.8k $1.1m $1.1m 0.00% Reduced -664.3k -664,296
61 ALGERT GLOBAL LLC 0.05% of their portfolio SAN FRANCISCO, CA 94,98995.0k $1.1m $1.1m 0.05% Added +83.5k +83,549
62 HarbourVest Partners LLC 0.37% of their portfolio Boston, MA 91,77991.8k $1.1m $1.1m 0.37% Reduced -5.0k -5,000
63 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 83,54483.5k $993.3k $993.3k 0.00% Reduced -395.6k -395,603
64 Jefferies Financial Group Inc. 0.02% of their portfolio NEW YORK, NY 82,50082.5k $980.9k $980.9k 0.02% Reduced -511.0k -511,020
65 DARK FOREST CAPITAL MANAGEMENT LP 0.07% of their portfolio NEW YORK, NY 73,69573.7k $876.2k $876.2k 0.07% Reduced -28.3k -28,322
66 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 72,34672.3k $860.2k $860.2k 0.00% Added +33.8k +33,805
67 Polar Asset Management Partners Inc. 0.02% of their portfolio TORONTO, A6 66,20066.2k $787.1k $787.1k 0.02% Reduced -203.1k -203,100
68 G2 Investment Partners Management LLC 0.19% of their portfolio New York, NY 65,00065.0k $772.9k $772.9k 0.19% Reduced -277.8k -277,755
69 ADVISORY RESEARCH INC 0.10% of their portfolio CHICAGO, IL 60,60260.6k $720.6k $720.6k 0.10% Reduced -10.5k -10,535
70 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 58,54658.5k $696.1k $696.1k 0.00% Added +10.9k +10,870
71 Financial Engines Advisors L.L.C. 0.00% of their portfolio SANTA CLARA, CA 58,50958.5k $695.7k $695.7k 0.00% New
72 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 58,49258.5k $695.5k $695.5k 0.00% Added +11.9k +11,941
73 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 53,53853.5k $636.6k $636.6k 0.00% Added +23.2k +23,215
74 Engineers Gate Manager LP 0.02% of their portfolio NEW YORK, NY 53,08653.1k $631.2k $631.2k 0.02% Added +10.7k +10,694
75 Raymond James Financial Services Advisors, Inc. 0.00% of their portfolio ST. PETERSBURG, FL 50,18550.2k $596.7k $596.7k 0.00% Reduced -52.6k -52,618
76 Y-Intercept (Hong Kong) Ltd 0.06% of their portfolio HONG KONG, K3 48,83048.8k $580.6k $580.6k 0.06% Added +36.5k +36,495
77 Legal & General Group Plc 0.00% of their portfolio London, X0 48,35748.4k $575.0k $575.0k 0.00% Added +16.2k +16,250
78 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 46,30346.3k $550.5k $550.5k 0.00% Added +32.3k +32,269
79 OCCUDO QUANTITATIVE STRATEGIES LP 0.07% of their portfolio FORT LAUDERDALE, FL 45,01445.0k $535.2k $535.2k 0.07% Reduced -20.7k -20,728
80 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 44,38044.4k $527.7k $527.7k 0.00% New
81 RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio ST PETERSBURG, FL 43,81343.8k $520.9k $520.9k 0.00% Reduced -45.6k -45,576
82 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 42,82142.8k $509.1k $509.1k 0.00% Reduced -18.2k -18,185
83 Robeco Institutional Asset Management B.V. 0.00% of their portfolio ROTTERDAM, P7 42,68842.7k $507.6k $507.6k 0.00% Added +5.3k +5,339
84 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 40,15240.2k $477.4k $477.4k 0.00% Added +22.9k +22,876
85 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 38,77138.8k $461.0k $461.0k 0.00% Added +8.6k +8,607
86 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 37,80037.8k $449.0k $449.0k 0.00% Added +2.3k +2,300
87 Quantbot Technologies LP 0.03% of their portfolio NEW YORK, NY 37,22437.2k $442.6k $442.6k 0.03% Added +2.5k +2,472
88 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 34,30034.3k $407.8k $407.8k 0.00% Reduced -1.3m -1,298,400
89 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 30,56830.6k $363.5k $363.5k 0.00% Unchanged
90 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 30,47830.5k $362.4k $362.4k 0.00% Reduced -3.2k -3,178
91 ExodusPoint Capital Management, LP 0.00% of their portfolio NEW YORK, NY 26,59526.6k $316.0k $316.0k 0.00% Reduced -43.4k -43,424
92 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 25,79725.8k $306.7k $306.7k 0.00% Added +6.0k +6,037
93 PDT Partners, LLC 0.04% of their portfolio New York, NY 25,64125.6k $304.9k $304.9k 0.04% New
94 Aigen Investment Management, LP 0.06% of their portfolio NEW YORK, NY 24,98725.0k $297.1k $297.1k 0.06% New
95 Nebula Research & Development LLC 0.15% of their portfolio New York, NY 24,32124.3k $289.2k $289.2k 0.15% New
96 Corient Private Wealth LP 0.00% of their portfolio MIAMI, FL 24,14924.1k $287.1k $287.1k 0.00% New
97 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 24,14624.1k $287.1k $287.1k 0.00% Added +1.2k +1,193
98 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 23,90323.9k $284.2k $284.2k 0.00% Added +5.7k +5,718
99 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 23,83523.8k $283.4k $283.4k 0.00% Added +8.8k +8,807
100 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 23,75423.8k $282.4k $282.4k 0.00% New