Vault-13

SIMILARWEB LTD SMWB

SHS · Common Stock · CUSIP M84137104

77 institutional holders +3 vs Q1 2024
30,434,10430.4m shares reported held*
$236.4mreported value*
10 new 27 added 27 reduced 6 sold out net bought ≈ $893.8k (+115.0k 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 ($148.0k this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $7.77. Options: 3 managers hold calls ($245.9k notional), 2 hold puts ($3.9k).

Trends to Q2 2024

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 46Q4 22: 47Q1 23: 42Q2 23: 49Q3 23: 52Q4 23: 55Q1 24: 74Q2 24: 7777Q3 22Q1 23Q3 23Q1 24Q2 24
Numbers
QuarterHolders
Q3 202246
Q4 202247
Q1 202342
Q2 202349
Q3 202352
Q4 202355
Q1 202474
Q2 202477

Buyers vs sellers

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

Bought or addedCut or sold out
50050Q4 22: 20 bought or addedQ4 22: 22 cut or sold outQ4 22Q1 23: 23 bought or addedQ1 23: 20 cut or sold outQ2 23: 21 bought or addedQ2 23: 18 cut or sold outQ2 23Q3 23: 28 bought or addedQ3 23: 25 cut or sold outQ4 23: 25 bought or addedQ4 23: 18 cut or sold outQ4 23Q1 24: 45 bought or addedQ1 24: 20 cut or sold outQ2 24: 37 bought or addedQ2 24: 33 cut or sold outQ2 24
Numbers
QuarterBought or addedCut or sold out
Q4 20222022
Q1 20232320
Q2 20232118
Q3 20232825
Q4 20232518
Q1 20244520
Q2 20243733

Calls vs puts

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

CallsPuts
$0$500k$1m$1.5m$2mQ3 23 calls: $648Q3 23 puts: $7.0kQ3 23P/C 10.80Q4 23 calls: $533Q4 23 puts: $4.3kQ4 23P/C 8.00Q1 24 calls: $1.5mQ1 24 puts: $6.5kQ1 24P/C 0.00Q2 24 calls: $245.9kQ2 24 puts: $3.9kQ2 24P/C 0.02
Numbers
QuarterCallsPutsP/C
Q3 2023$648$7.0k10.80
Q4 2023$533$4.3k8.00
Q1 2024$1.5m$6.5k0.00
Q2 2024$245.9k$3.9k0.02

Biggest buyers

MENORA MIVTACHIM HOLDINGS LTD. New +1,063,408+1.1m
S SQUARED TECHNOLOGY, LLC Added +232,187+232.2k
SCALAR GAUGE MANAGEMENT, LLC Added +215,221+215.2k
ACADIAN ASSET MANAGEMENT LLC Added +167,500+167.5k
Connor, Clark & Lunn Investment Management Ltd. Added +119,553+119.6k
JPMORGAN CHASE & CO Added +95,372+95.4k
CITADEL ADVISORS LLC Added +92,109+92.1k
Nuveen Asset Management, LLC Added +80,198+80.2k
BlackRock Inc. Added +73,023+73.0k
CEERA INVESTMENTS, LLC Added +71,994+72.0k

Biggest sellers

Portolan Capital Management, LLC Reduced -673,343-673.3k
Phoenix Financial Ltd. Reduced -636,498-636.5k
Roubaix Capital, LLC Sold out -272,092-272.1k
Old Well Partners, LLC Reduced -156,419-156.4k
MORGAN STANLEY Reduced -142,487-142.5k
Migdal Insurance & Financial Holdings Ltd. Reduced -141,473-141.5k
Circumference Group LLC Sold out -109,461-109.5k
Horrell Capital Management, Inc. Sold out -109,461-109.5k
ARK Investment Management LLC Reduced -96,645-96.6k
MARSHALL WACE, LLP Reduced -46,661-46.7k

Biggest calls

SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $205.9k26.5k shares
SIMPLEX TRADING, LLC Reduced $40.0k5.2k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. Unchanged $00 shares

Biggest puts

CITADEL ADVISORS LLC Unchanged $3.9k500 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.

HolderStakeChangeShares Last filed
Viola Growth Management Fund 2 Ltd. 13G · exempt (held before listing) filed 2025-02-12 13.2% 10.8m≈ $66.3m 2025-02-12

Fell to 5% or below in the last year: Phoenix Financial Ltd. (2.9%, 2026-02-24)

Insider purchases and sales in Q2 2024

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported in Q2 2024.

Holders, Q2 2024

#ManagerLocationShares Value% of their portfolioChangeShares change
1 NASPERS LTD 11.90% of their portfolio CAPETOWN, T3 11,173,26511.2m $86.8m $86.8m 11.90% Unchanged
2 Phoenix Financial Ltd. 0.34% of their portfolio Givatayim, L3 2,900,4342.9m $22.5m $22.5m 0.34% Reduced -636.5k -636,498
3 Ulysses Management LLC 4.26% of their portfolio New York, NY 2,283,2282.3m $17.7m $17.7m 4.26% Unchanged
4 Migdal Insurance & Financial Holdings Ltd. 0.26% of their portfolio Petach Tikva, L3 1,966,0682.0m $15.3m $15.3m 0.26% Reduced -141.5k -141,473
5 Alpha Family Trust 7.66% of their portfolio Los Angeles, CA 1,681,7771.7m $13.1m $13.1m 7.66% Unchanged
6 Portolan Capital Management, LLC 0.87% of their portfolio BOSTON, MA 1,367,2591.4m $10.6m $10.6m 0.87% Reduced -673.3k -673,343
7 Y.D. More Investments Ltd 1.04% of their portfolio Ramat Gan, L3 1,314,2631.3m $10.2m $10.2m 1.04% Unchanged
8 MENORA MIVTACHIM HOLDINGS LTD. 0.06% of their portfolio Ramat Gan, L3 1,063,4081.1m $8.3m $8.3m 0.06% New
9 SCALAR GAUGE MANAGEMENT, LLC 2.69% of their portfolio DALLAS, TX 593,923593.9k $4.6m $4.6m 2.69% Added +215.2k +215,221
10 S SQUARED TECHNOLOGY, LLC 1.85% of their portfolio RYE, NY 540,210540.2k $4.2m $4.2m 1.85% Added +232.2k +232,187
11 ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio Boston, MA 442,917442.9k $3.4m $3.4m 0.01% Added +167.5k +167,500
12 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 343,478343.5k $2.7m $2.7m 0.00% Added +80.2k +80,198
13 BlackRock Inc. 0.00% of their portfolio New York, NY 334,885334.9k $2.6m $2.6m 0.00% Added +73.0k +73,023
14 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 310,117310.1k $2.4m $2.4m 0.00% Reduced -3.2k -3,201
15 ESSEX INVESTMENT MANAGEMENT CO LLC 0.44% of their portfolio BOSTON, MA 304,544304.5k $2.4m $2.4m 0.44% Added +44.1k +44,094
16 ARK Investment Management LLC 0.02% of their portfolio ST. PETERSBURG, FL 287,585287.6k $2.2m $2.2m 0.02% Reduced -96.6k -96,645
17 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 261,508261.5k $2.0m $2.0m 0.00% Added +28.3k +28,264
18 CEERA INVESTMENTS, LLC 0.85% of their portfolio BELLAIRE, TX 259,827259.8k $2.0m $2.0m 0.85% Added +72.0k +71,994
19 Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio VANCOUVER, A1 211,468211.5k $1.6m $1.6m 0.01% Added +119.6k +119,553
20 Walleye Capital LLC 0.01% of their portfolio NEW YORK, NY 164,273164.3k $1.3m $1.3m 0.01% Reduced -19.2k -19,221
21 Old Well Partners, LLC 1.43% of their portfolio CHARLOTTE, NC 156,419156.4k $1.2m $1.2m 1.43% Reduced -156.4k -156,419
22 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 141,817141.8k $1.1m $1.1m 0.00% Added +15.2k +15,200
23 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 138,694138.7k $1.1m $1.1m 0.00% Added +95.4k +95,372
24 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 122,512122.5k $951.9k $951.9k 0.00% Reduced -142.5k -142,487
25 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 110,837110.8k $861.2k $861.2k 0.00% Reduced -21.7k -21,660
26 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 110,600110.6k $859.4k $859.4k 0.00% Added +4.6k +4,599
27 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 109,305109.3k $849.3k $849.3k 0.00% Added +92.1k +92,109
28 Legato Capital Management LLC 0.11% of their portfolio San Francisco, CA 102,987103.0k $800.2k $800.2k 0.11% Added +4.5k +4,455
29 Atom Investors LP 0.08% of their portfolio AUSTIN, TX 102,007102.0k $792.6k $792.6k 0.08% Added +48.1k +48,108
30 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 100,682100.7k $782.3k $782.3k 0.00% Added +9.3k +9,293
31 OPPENHEIMER & CO INC 0.01% of their portfolio NEW YORK, NY 97,05297.1k $754.1k $754.1k 0.01% Added +24.4k +24,412
32 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 95,44395.4k $741.6k $741.6k 0.00% Reduced -17.6k -17,650
33 Trexquant Investment LP 0.01% of their portfolio STAMFORD, CT 94,82794.8k $736.8k $736.8k 0.01% Added +61.0k +60,997
34 Calamos Advisors LLC 0.00% of their portfolio NAPERVILLE, IL 91,17891.2k $708.5k $708.5k 0.00% Reduced -7.7k -7,707
35 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 80,41880.4k $624.8k $624.8k 0.00% Reduced -46.7k -46,661
36 Quadrature Capital Ltd 0.01% of their portfolio LONDON, X0 77,16477.2k $597.2k $597.2k 0.01% Added +42.6k +42,571
37 272 Capital LP 0.26% of their portfolio DALLAS, TX 68,03668.0k $528.6k $528.6k 0.26% New
38 Cresset Asset Management, LLC 0.00% of their portfolio Chicago, IL 63,97864.0k $497.1k $497.1k 0.00% New
39 Swiss National Bank 0.00% of their portfolio ZURICH, V8 53,97454.0k $419.4k $419.4k 0.00% Unchanged
40 GSA CAPITAL PARTNERS LLP 0.03% of their portfolio LONDON, X0 52,56052.6k $408.0k $408.0k 0.03% Reduced -16.7k -16,712
41 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 51,32851.3k $398.8k $398.8k 0.00% Reduced -45.1k -45,073
42 Cubist Systematic Strategies, LLC 0.01% of their portfolio STAMFORD, CT 51,27251.3k $398.4k $398.4k 0.01% Added +2.1k +2,138
43 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 50,92850.9k $395.7k $395.7k 0.00% Reduced -3.6k -3,560
44 XTX Topco Ltd 0.03% of their portfolio LONDON, X0 49,52749.5k $384.8k $384.8k 0.03% Added +19.3k +19,313
45 Premier Fund Managers Ltd 0.01% of their portfolio GUILDFORD, X0 44,51744.5k $341.0k $341.0k 0.01% Unchanged
46 UBS Group AG 0.00% of their portfolio ZURICH, V8 40,45840.5k $314.4k $314.4k 0.00% Reduced -29.7k -29,684
47 BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 33,85933.9k $263.1k $263.1k 0.01% New
48 Pathstone Holdings, LLC 0.00% of their portfolio ENGLEWOOD, NJ 33,01033.0k $256.5k $256.5k 0.00% Reduced -2.0k -1,990
49 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 28,90528.9k $224.6k $224.6k 0.00% Added +2.0k +2,013
50 Corton Capital Inc. 0.12% of their portfolio Carrying Place, A6 28,35628.4k $220.3k $220.3k 0.12% Added +8.1k +8,104
51 Legal & General Group Plc 0.00% of their portfolio London, X0 26,05326.1k $202.4k $202.4k 0.00% Unchanged
52 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 25,16025.2k $195.5k $195.5k 0.00% Unchanged
53 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 24,10024.1k $187.3k $187.3k 0.00% Reduced -30.3k -30,300
54 MEITAV INVESTMENT HOUSE LTD 0.00% of their portfolio BENE-BERAQ, L3 21,80021.8k $168.0k $168.0k 0.00% Reduced -3.2k -3,200
55 BLAIR WILLIAM & CO/IL 0.00% of their portfolio CHICAGO, IL 21,57221.6k $167.6k $167.6k 0.00% Reduced -90 -90
56 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 19,05019.1k $148.0k $148.0k 0.00% New
57 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 17,50017.5k $136.0k $136.0k 0.00% New
58 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 16,35316.4k $127.1k $127.1k 0.00% Added +14.8k +14,758
59 OCCUDO QUANTITATIVE STRATEGIES LP 0.02% of their portfolio FORT LAUDERDALE, FL 12,63012.6k $98.1k $98.1k 0.02% Reduced -13.3k -13,343
60 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 12,33212.3k $95.8k $95.8k 0.00% New
61 Jump Financial, LLC 0.00% of their portfolio Chicago, IL 12,00912.0k $93.3k $93.3k 0.00% Reduced -18.1k -18,091
62 ANTIPODES PARTNERS Ltd 0.00% of their portfolio ROYAL EXCHANGE, C3 11,58011.6k $90.0k $90.0k 0.00% Added +6.4k +6,376
63 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 10,69010.7k $83.1k $83.1k 0.00% Reduced -10.2k -10,233
64 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 7,8657.9k $61.1k $61.1k 0.00% New
65 State of Tennessee, Department of Treasury 0.00% of their portfolio NASHVILLE, TN 7,8477.8k $61.0k $61.0k 0.00% Unchanged
66 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 5,6675.7k $44.0k $44.0k 0.00% Unchanged
67 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 5,1215.1k $39.8k $39.8k 0.00% Reduced -4.7k -4,669
68 Covestor Ltd 0.02% of their portfolio LONDON, X0 4,5374.5k $35.0k $35.0k 0.02% New
69 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 1,3651.4k $10.6k $10.6k 0.00% Added +94 +94
70 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 1,1661.2k $9.1k $9.1k 0.00% New
71 Harel Insurance Investments & Financial Services Ltd. 0.00% of their portfolio Ramat Gan, L3 663663 $5.0k $5.0k 0.00% Reduced -477 -477
72 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 599599 $5.0k $5.0k 0.00% Added +225 +225
73 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 258258 $2.0k $2.0k 0.00% Reduced -561 -561
74 NewEdge Advisors, LLC 0.00% of their portfolio NEW ORLEANS, LA 109109 $847 $847 0.00% Unchanged
75 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 3535 $272 $272 0.00% Reduced -382 -382
76 FMR LLC 0.00% of their portfolio BOSTON, MA 66 $47 $47 0.00% Unchanged
77 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% Unchanged