SMWB · Similarweb Ltd.

$9.08 -0.11 (-1.20%) At close · Aug 28

Market Cap

$799.53M

88.25M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Quarter:

Holders: 70

Total Value: $246,534,451

Total Shares: 40,217,697

Institutional Ownership Trend

21 quarters

Holder Concentration

Across 70 13F filers · Δ vs Mar 31, 2026

Top Holder

27.8%

+1.5 pts

Top 5

61.6%

+4.6 pts

Top 10

75.5%

+5.1 pts

HHI

1,133

Broadly held+132

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -11

Institutional value: +122.6%

Shares held: -5.2%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Large Schonfeld Strategic Advisors LLC	+921,455	1,210,629
Mega WELLINGTON MANAGEMENT GROUP LLP	+657,928	3,624,685
Large ARK Investment Management LLC	+482,593	834,663
Mega JANE STREET GROUP, LLC	+370,711	601,977
Small NANO CAP NEW MILLENNIUM GROWTH FUND L P	+260,000	650,000

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega MILLENNIUM MANAGEMENT LLC	−807,565	18,198
Mid CenterBook Partners LP	−725,376	599,737
Large MARSHALL WACE, LLP	−577,207	60,981
Large ACADIAN ASSET MANAGEMENT LLC	−398,857	6,750
Mega Qube Research & Technologies Ltd	−384,299	31,847

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Micro Lotus Technology Management, LP	531,409	$3,257,537
Mid ANTIPODES PARTNERS Ltd	145,601	$892,534
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	138,417	$848,496
Small MYDA Advisors LLC	100,000	$613,000
Small State of Wyoming	88,458	$542,247

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Small MIRABELLA FINANCIAL SERVICES LLP	792,664	$2,068,853
Mid Penn Capital Management Company, LLC	360,366	$940,555
Mid Militia Capital Management LLC	219,264	$572,279
Mid Phoenix Financial Ltd.	216,904	$566,119
Mega JPMORGAN CHASE & CO	175,207	$457,289

Filter: New 16 Increased 19 Reduced 20 Sold out 27 Unchanged 15

Showing 74 of 74

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

NASPERS LTD

$68,492,114

27.78%

11,173,265

MENORA MIVTACHIM HOLDINGS LTD.

$24,614,978

9.98%

4,015,494

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Menora Mivtachim Insurance Ltd. joint	4,015,494	$24,614,978	100.0%	Defined

WELLINGTON MANAGEMENT GROUP LLP

$22,219,318

9.01%

3,624,685

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	2,439,494	$14,954,098	67.3%	Defined
Wellington Trust Company, NA joint	1,133,687	$6,949,501	31.3%	Defined
Wellington Management Australia Pty Ltd	51,504	$315,719	1.4%	Defined

ION Crossover Partners Ltd

$18,578,963

7.54%

3,030,826

Ulysses Management LLC

$17,951,545

7.28%

2,928,474

S SQUARED TECHNOLOGY, LLC

$10,359,700

4.20%

1,690,000

Schonfeld Strategic Advisors LLC

$7,421,155

3.01%

1,210,629

Y.D. More Investments Ltd

$7,031,324

2.85%

1,147,035

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
More Provident Funds & Pension Ltd.	1,147,035	$7,031,324	100.0%	Defined

ARK Investment Management LLC

$5,116,484

2.08%

834,663

RENAISSANCE TECHNOLOGIES LLC

$4,375,152

1.77%

713,728

CDC Financial, Inc.

$4,133,048

1.68%

674,233

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
COGHILL CLINT D	674,233	$4,133,048	100.0%	Defined

Alpha Family Trust

$4,039,271

1.64%

658,935

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Cheryl Saban joint	658,935	$4,039,271	100.0%	Defined

NANO CAP NEW MILLENNIUM GROWTH FUND L P

$3,984,500

1.62%

650,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AZG TANGIBLE ASSETS FUND LLC	650,000	$3,984,500	100.0%	Sole

HERALD INVESTMENT MANAGEMENT Ltd

$3,956,700

1.60%

645,465

P.A.W. CAPITAL CORP

$3,923,200

1.59%

640,000

Sphera Management Technology Funds Ltd

$3,769,950

1.53%

615,000

CenterBook Partners LP

$3,676,387

1.49%

599,737

Lotus Technology Management, LP

$3,257,537

1.32%

531,409

JANE STREET GROUP, LLC

$3,146,387

1.28%

513,277

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	196,160	$1,202,460	38.2%	Defined
Jane Street Global Trading, LLC	317,117	$1,943,927	61.8%	Defined

PEAK6 LLC

$2,971,958

1.21%

484,822

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	484,822	$2,971,958	100.0%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$2,732,085

1.11%

445,691

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	445,691	$2,732,085	100.0%	Sole

UBS Group AG

$2,472,400

1.00%

403,328

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	398,200	$2,440,966	98.7%	Defined
UBS Switzerland AG	5,128	$31,434	1.3%	Defined

CITADEL ADVISORS LLC

$2,125,485

0.86%

346,735

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	346,735	$2,125,485	100.0%	Defined

MORGAN STANLEY

$1,644,084

0.67%

268,203

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	4,918	$30,147	1.8%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	262,085	$1,606,581	97.7%	Defined
MORGAN STANLEY SMITH BARNEY LLC	1,200	$7,356	0.4%	Defined

LAVELLE CAPITAL LP

$1,242,716

0.50%

202,727

Persistent Asset Partners Ltd

$1,103,400

0.45%

180,000

SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC

$1,041,395

0.42%

169,885

D. E. Shaw & Co., Inc.

$980,401

0.40%

159,935

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	38,535	$236,219	24.1%	Defined
D. E. Shaw Investment Management, L.L.C. joint	121,400	$744,182	75.9%	Defined

ANTIPODES PARTNERS Ltd

$892,534

0.36%

145,601

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$848,496

0.34%

138,417

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	138,417	$848,496	100.0%	Other

BlackRock, Inc.

$818,557

0.33%

133,533

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Fund Advisors	133,533	$818,557	100.0%	Sole

TWO SIGMA INVESTMENTS, LP

$795,986

0.32%

129,851

MYDA Advisors LLC

$613,000

0.25%

100,000

Pathstone Holdings, LLC

$609,260

0.25%

99,390

GSA CAPITAL PARTNERS LLP

$587,860

0.24%

95,899

JANE STREET GROUP, LLC

$543,731

0.22%

88,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	88,700	$543,731	100.0%	Defined

State of Wyoming

$542,247

0.22%

88,458

STATE STREET CORP

$472,341

0.19%

77,054

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SSGA FUNDS MANAGEMENT, INC.	77,054	$472,341	100.0%	Defined

Quadrature Capital Ltd

$418,108

0.17%

68,207

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	68,207	$418,108	100.0%	Other

MARSHALL WACE, LLP

$373,812

0.15%

60,981

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	60,981	$373,812	100.0%	Other

Centiva Capital, LP

$281,483

0.11%

45,919

WealthTrust Axiom LLC

$273,183

0.11%

44,565

CITADEL ADVISORS LLC

$237,844

0.10%

38,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	38,800	$237,844	100.0%	Defined

IMC-Chicago, LLC

$229,911

0.09%

37,506

SIMPLEX TRADING, LLC

$202,694

0.08%

33,066

Qube Research & Technologies Ltd

$195,222

0.08%

31,847

LAZARD ASSET MANAGEMENT LLC

$144,459

0.06%

23,566

SG Americas Securities, LLC

$135,252

0.05%

22,064

MILLENNIUM MANAGEMENT LLC

$111,553

0.05%

18,198

Integrated Wealth Concepts LLC

$91,950

0.04%

15,000

CITADEL ADVISORS LLC

$88,272

0.04%

14,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	14,400	$88,272	100.0%	Defined

R Squared Ltd

$68,999

0.03%

11,256

XTX Topco Ltd

$66,853

0.03%

10,906

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	10,906	$66,853	100.0%	Defined

PRELUDE CAPITAL MANAGEMENT, LLC

$63,819

0.03%

10,411

PharVision Advisers, LLC

$63,555

0.03%

10,368

Olympiad Research LP

$63,365

0.03%

10,337

Cresset Asset Management, LLC

$62,182

0.03%

10,144

MARATHON CAPITAL MANAGEMENT

$61,300

0.02%

10,000

WELLS FARGO & COMPANY/MN

$56,396

0.02%

9,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	1,000	$6,130	10.9%	Defined
WELLS FARGO CLEARING SERVICES, LLC	8,200	$50,266	89.1%	Defined

CITIGROUP INC

$46,042

0.02%

7,511

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	7,511	$46,042	100.0%	Defined

ACADIAN ASSET MANAGEMENT LLC

$41,377

0.02%

6,750

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	6,750	$41,377	100.0%	Defined

ROYAL BANK OF CANADA

$36,167

0.01%

5,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Dominion Securities Inc.	5,900	$36,167	100.0%	Defined

PEAK6 LLC

$18,390

0.01%

3,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	3,000	$18,390	100.0%	Defined

SBI Securities Co., Ltd.

$6,277

0.00%

1,024

BARCLAYS PLC

$4,229

0.00%

690

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	690	$4,229	100.0%	Defined

Tower Research Capital LLC (TRC)

$2,445

0.00%

399

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	399	$2,445	100.0%	Other

OSAIC HOLDINGS, INC.

$1,839

0.00%

300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	300	$1,839	100.0%	Defined

Quarry LP

$913

0.00%

149

JONES FINANCIAL COMPANIES LLLP

$613

0.00%

100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	100	$613	100.0%	Sole

Smartleaf Asset Management LLC

$177

0.00%

Caitong International Asset Management Co., Ltd

$67

0.00%

FMR LLC

$36

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STRATEGIC ADVISERS LLC	6	$36	100.0%	Defined

Farther Finance Advisors, LLC

$18

0.00%

Covestor Ltd

0.00%

Key facts CIK 1842731 CUSIP M84137104 13F (30d) 63 filings 63 filers Visit website Investor relations