SIMILARWEB LTD.

SMWBNYSE

$8.08+0.12 (+1.51% today)

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

SIMILARWEB LTD. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (-12.8%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
Naspers Ltd	12.85%	$68.5M	81.19%	Not reported
Menora Mivtachim Holdings Ltd.	4.62%	$24.6M	0.10%	Not reported
Wellington Management Group LLP	4.17%	$22.2M	0.00%	Add 22.18%
ION Crossover Partners Ltd	3.49%	$18.6M	24.88%	Not reported
Ulysses Management LLC	3.37%	$18M	3.55%	Reduce 2.33%
S Squared Technology, LLC	1.94%	$10.4M	3.21%	Add 5.63%
Schonfeld Strategic Advisors LLC	1.39%	$7.42M	0.03%	Not reported
Y.D. More Investments Ltd	1.32%	$7.03M	0.22%	Reduce 0.37%
ARK Investment Management LLC	0.96%	$5.12M	0.03%	Add 137.07%
Renaissance Technologies LLC	0.82%	$4.38M	0.01%	Not reported
CDC Financial, Inc.	0.78%	$4.13M	1.73%	Add 5.51%
Alpha Family Trust	0.76%	$4.04M	1.62%	Not reported
Nano Cap New Millennium Growth Fund L P	0.75%	$3.98M	3.06%	Add 66.67%
HERALD INVESTMENT MANAGEMENT Ltd	0.74%	$3.96M	0.54%	Not reported
P.A.W. Capital Corp	0.74%	$3.92M	3.00%	Add 28.00%
Sphera Management Technology Funds Ltd	0.71%	$3.77M	1.32%	Not reported
CenterBook Partners LP	0.69%	$3.68M	0.18%	Reduce 54.74%
Lotus Technology Management, LP	0.61%	$3.4M	4.18%	New Not reported
Jane Street Group, LLC	0.59%	$3.15M	0.00%	Not reported
Peak6 LLC	0.56%	$2.97M	0.01%	Not reported
UBS Group AG	0.46%	$2.47M	0.00%	Not reported
Citadel Advisors LLC	0.40%	$2.13M	0.00%	Not reported
Morgan Stanley	0.31%	$1.64M	0.00%	Not reported
Lavelle Capital LP	0.23%	$1.24M	0.54%	Not reported
Persistent Asset Partners Ltd	0.21%	$1.1M	0.33%	Not reported
Susquehanna Fundamental Investments, LLC	0.20%	$1.04M	0.02%	Add 35.23%
D. E. Shaw & Co., Inc.	0.18%	$980K	0.00%	Not reported
Susquehanna International Group, LLP	0.16%	$848K	0.00%	Not reported
BlackRock, Inc.	0.15%	$819K	0.00%	Not reported
Two Sigma Investments, LP	0.15%	$796K	0.00%	Not reported
MYDA Advisors LLC	0.12%	$613K	0.09%	Not reported
Pathstone Holdings, LLC	0.11%	$609K	0.00%	Not reported
Gsa Capital Partners LLP	0.11%	$588K	0.04%	Not reported
State of Wyoming	0.10%	$542K	0.05%	Not reported
State Street Corp	0.09%	$472K	0.00%	Not reported
Quadrature Capital Ltd	0.08%	$418K	0.00%	Not reported
Marshall Wace, LLP	0.07%	$374K	0.00%	Not reported
Centiva Capital, LP	0.05%	$281K	0.00%	Not reported
WealthTrust Axiom LLC	0.05%	$273K	0.06%	New Not reported
IMC-Chicago, LLC	0.04%	$230K	0.00%	New Not reported
Simplex Trading, LLC	0.04%	$203K	0.00%	Not reported
Qube Research & Technologies Ltd	0.04%	$195K	0.00%	Not reported
SG Americas Securities, LLC	0.03%	$135K	0.00%	Not reported
Millennium Management LLC	0.02%	$112K	0.00%	Not reported
Integrated Wealth Concepts LLC	0.02%	$92K	0.00%	Not reported
R Squared Ltd	0.01%	$69K	0.04%	New Not reported
XTX Topco Ltd	0.01%	$66.9K	0.00%	Not reported
Prelude Capital Management, LLC	0.01%	$63.8K	0.00%	Not reported
PharVision Advisers, LLC	0.01%	$63.6K	1.20%	Reduce 45.22%
Olympiad Research LP	0.01%	$63.4K	0.13%	Not reported

50 of 66 holders

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