Similarweb SMWB Institutional Ownership

NYSE SMWB

$8.17 +0.41 (+5.30%)

As of: Oct 1, 2026 · 3:59 PM EDT

Institutions by Trading Activity

69 Institutions

Increased 36 52.2%

Unchanged 15 21.7%

Reduced 18 26.1%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

45.89%

▼-3.89 pp QoQ

Shares Held by Institutions

38.93Mn

of 84.82Mn outstanding

▲+1.90% QoQ

Shares Outstanding

84.82Mn

45.89Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-11 vs prior quarter

Net Shares Added (QoQ)

+724.56K

accumulated since last quarter

Value of Holdings

$301.67Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Similarweb Ltd. (NYSE:SMWB) appears in 69 institutional 13F filings for the quarter ending June 2026.

Collectively, these holders controlled 45.9% of Similarweb's outstanding shares in June 2026, down from 49.8% in March 2026.
They increased total shares held in Similarweb by 1.9% from last quarter, and the number of investors in SMWB decreased 36.7% annually.
Of these 69 holders, 36 added to their stakes in Similarweb, 18 trimmed positions, and 15 made no changes.
Institutional investors collectively held 38.93Mn shares in Similarweb as of June 2026, up by 724.56K shares quarter on quarter, and down 212.66K shares year over year.
NASPERS LTD holds the largest position in SMWB at 11.17Mn shares as of June 30, 2026, or 13.17% of shares outstanding.
The biggest buyers of Similarweb for the quarter ending June 2026 included Schonfeld Strategic Advisors LLC (921.46K), WELLINGTON MANAGEMENT GROUP LLP (657.93K), Lotus Technology Management, LP (531.41K), ARK Investment Management LLC (482.59K), JANE STREET GROUP, LLC (282.01K).
Leading sellers of Similarweb shares for the quarter ending June 2026 were MILLENNIUM MANAGEMENT LLC (807.56K), CenterBook Partners LP (725.38K), MARSHALL WACE, LLP (577.21K), ACADIAN ASSET MANAGEMENT LLC (398.86K), Qube Research & Technologies Ltd (384.3K).
Similarweb's 10 largest shareholders as of June 2026 include NASPERS LTD (11.17Mn), MENORA MIVTACHIM HOLDINGS LTD. (4.02Mn), WELLINGTON MANAGEMENT GROUP LLP (3.62Mn), ION Crossover Partners Ltd (3.03Mn), Ulysses Management LLC (2.93Mn), S SQUARED TECHNOLOGY, LLC (1.69Mn), Schonfeld Strategic Advisors LLC (1.21Mn), ARK Investment Management LLC (834.66K), RENAISSANCE TECHNOLOGIES LLC (713.73K), CDC Financial, Inc. (674.23K) per Business Quant data.

Form 13F Holdings

69 Institutional Holders

Report period 30 Jun, 2026

Total shares held 38.93Mn

Of outstanding 45.89%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	NASPERS LTD	0001106051	11,173,265	13.17%	0	0.00%	$68.49Mn
2	MENORA MIVTACHIM HOLDINGS LTD.	0001351917	4,015,494	4.73%	0	0.00%	$24.61Mn
3	WELLINGTON MANAGEMENT GROUP LLP	0000902219	3,624,685	4.27%	▲657,928	+22.18%	$22.22Mn
4	ION Crossover Partners Ltd	0001803307	3,030,826	3.57%	0	0.00%	$18.58Mn
5	Ulysses Management LLC	0001510912	2,928,474	3.45%	▼70,000	-2.33%	$17.95Mn
6	S SQUARED TECHNOLOGY, LLC	0001322924	1,690,000	1.99%	▼1,510,000	-47.19%	$10.36Mn
7	Schonfeld Strategic Advisors LLC	0001665241	1,210,629	1.43%	▲921,455	+318.65%	$7.42Mn
8	ARK Investment Management LLC	0001697748	834,663	0.98%	▲482,593	+137.07%	$5.12Mn
9	RENAISSANCE TECHNOLOGIES LLC	0001037389	713,728	0.84%	▼25,945	-3.51%	$4.38Mn
10	CDC Financial, Inc.	0002077836	674,233	0.79%	▲35,219	+5.51%	$4.13Mn
11	Alpha Family Trust	0001568991	658,935	0.78%	0	0.00%	$4.04Mn
12	NANO CAP NEW MILLENNIUM GROWTH FUND L P	0001277890	650,000	0.77%	▲260,000	+66.67%	$3.98Mn
13	HERALD INVESTMENT MANAGEMENT Ltd	0001512022	645,465	0.76%	0	0.00%	$3.96Mn
14	P.A.W. CAPITAL CORP	0000949853	640,000	0.75%	▲140,000	+28.00%	$3.92Mn
15	Sphera Management Technology Funds Ltd	0002030525	615,000	0.73%	0	0.00%	$3.77Mn
16	CenterBook Partners LP	0001872738	599,737	0.71%	▼725,376	-54.74%	$3.68Mn
17	Lotus Technology Management, LP	0002095243	531,409	0.63%	▲531,409	0.00%	$3.40Mn
18	JANE STREET GROUP, LLC	0001595888	513,277	0.61%	▲282,011	+121.94%	$3.15Mn
19	PEAK6 LLC	0001389958	484,822	0.57%	▲163,666	+50.96%	$2.97Mn
20	Connor, Clark & Lunn Investment Management Ltd.	0001596800	445,691	0.53%	▼87,943	-16.48%	$2.73Mn

Showing 1 to 20 of 69 holders