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Similarweb (SMWB) Institutional Ownership

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$7.96 0.00 (0.00%)
Closing price 11/13/2026 03:59 PM Eastern
Extended Trading
$7.98 +0.01 (+0.19%)
As of 11/13/2026 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Similarweb (NYSE:SMWB)

Current
Institutional Ownership
Percentage
57.59%
Number of
Institutional Buyers
(last 12 months)
41
Total
Institutional Inflows
(last 12 months)
$59.61M
Number of
Institutional Sellers
(last 12 months)
13
Total
Institutional Outflows
(last 12 months)
$6.13M
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SMWB Institutional Buying and Selling by Quarter

Similarweb Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
11/14/2026Marshall Wace LLP633,111$4.91M0.0%+938.2%0.723%
11/12/2026 State Street Corp93,045$722K0.0%-39.6%0.106%
11/6/2026 Aberdeen Group plc1,343,137$10.42M0.0%N/A1.533%
11/6/2026 Russell Investments Group Ltd.6,559$50K0.0%N/A0.007%
11/6/2026 King Luther Capital Management Corp235,000$1.82M0.0%N/A0.268%
11/5/2026 First Command Advisory Services Inc.4,469$35K0.0%N/A0.005%
11/3/2026 CenterBook Partners LP881,065$6.84M0.3%+46.9%1.006%
10/29/2026 State of Wyoming118,170$917K0.1%+33.6%0.135%
9/9/2026Integrated Wealth Concepts LLC15,000$92K0.0%N/A0.017%
8/19/2026Wellington Management Group LLP3,624,685$22.22M0.0%+22.2%4.138%
6/12/2026 Militia Capital Management LLC236,000$616K0.1%N/A0.269%
5/28/2026 Lavelle Capital LP202,727$529K0.3%N/A0.231%
5/19/2026Bank of America Corp DE63,985$167K0.0%+475.3%0.073%
5/14/2026 Renaissance Technologies LLC739,673$1.93M0.0%+104.6%0.844%
5/13/2026 Militia Capital Management LLC219,264$572K0.1%N/A0.250%
5/4/2026 Y.D. More Investments Ltd1,151,298$3.01M0.1%-1.7%1.314%
2/18/2026Sphera Management Technology Funds Ltd480,000$3.60M1.2%+3.7%0.566%
2/18/2026Numerai GP LLC117,949$883K0.1%N/A0.139%
2/18/2026Millennium Management LLC357,807$2.68M0.0%-30.0%0.422%
2/18/2026Engineers Gate Manager LP62,800$470K0.0%-33.5%0.074%
2/18/2026Boothbay Fund Management LLC11,961$90K0.0%N/A0.014%
2/17/2026Lazard Asset Management LLC13,736$103K0.0%-30.5%0.016%
2/17/2026Trexquant Investment LP108,038$809K0.0%-21.1%0.127%
2/17/2026Jump Financial LLC63,321$474K0.0%+37.7%0.075%
2/17/2026Public Employees Retirement System of Ohio60,419$453K0.0%+29.5%0.071%
2/17/2026 Russell Investments Group Ltd.148,339$1.11M0.0%-2.2%0.175%
2/17/2026ExodusPoint Capital Management LP29,931$224K0.0%N/A0.035%
2/17/2026 Blair William & Co. IL71,044$532K0.0%-30.8%0.084%
2/17/2026Persistent Asset Partners Ltd180,000$1.35M0.6%N/A0.212%
2/16/2026Verition Fund Management LLC35,844$268K0.0%-47.0%0.042%
2/16/2026S Squared Technology LLC775,161$5.81M2.2%+12.9%0.913%
2/13/2026Marshall Wace LLP292,483$2.19M0.0%+25.4%0.345%
2/13/2026 State Street Corp370,001$2.77M0.0%+16.3%0.436%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC43,261$324K0.0%N/A0.051%
2/12/2026HRT Financial LP58,354$437K0.0%+24.0%0.069%
2/12/2026Brooklyn Investment Group11,732$85K0.0%N/A0.014%
2/12/2026New York State Common Retirement Fund852,915$6.39M0.0%+0.4%1.005%
2/12/2026 Nuveen LLC1,520,398$11.39M0.0%+2.5%1.792%
2/11/2026ARK Investment Management LLC236,425$1.77M0.0%+2.8%0.279%
2/11/2026 Fox Run Management L.L.C.19,528$146K0.0%N/A0.023%
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2/11/2026 CenterBook Partners LP960,996$7.20M0.4%-18.6%1.132%
2/9/2026 Penn Capital Management Company LLC1,588,680$11.91M0.9%-3.5%1.872%
2/9/2026 Royce & Associates LP537,406$4.03M0.0%+8.7%0.633%
2/6/2026Nano Cap New Millennium Growth Fund L P167,500$1.26M1.1%N/A0.197%
2/5/2026 Phoenix Financial Ltd.4,285,786$32.10M0.3%+43.2%5.050%
2/4/2026 First Eagle Investment Management LLC645,647$4.84M0.0%+18.5%0.761%
2/2/2026 Oppenheimer & Co. Inc.89,390$670K0.0%-10.3%0.105%
1/29/2026 UBS Group AG536,549$4.02M0.0%+71.4%0.632%
1/27/2026 Zurcher Kantonalbank Zurich Cantonalbank31,592$237K0.0%+50.2%0.037%
1/21/2026 Y.D. More Investments Ltd1,171,298$8.37M0.4%-1.0%1.380%
1/1/2026 JPMorgan Chase & Co.21,525$200K0.0%-83.7%0.025%
11/24/2025 Penn Capital Management Company LLC1,646,094$15.32M1.2%+299.4%1.940%
11/17/2025Wexford Capital LP6,860$64K0.0%N/A0.008%
11/17/2025Verition Fund Management LLC67,573$628K0.0%-22.2%0.080%
11/17/2025Public Employees Retirement System of Ohio46,673$434K0.0%+302.4%0.055%
11/17/2025Millennium Management LLC510,921$4.75M0.0%+65.7%0.602%
11/17/2025 Larson Financial Group LLC2,686$25K0.0%N/A0.003%
11/17/2025Bank of America Corp DE56,213$523K0.0%+390.5%0.066%
11/14/2025Lazard Asset Management LLC19,761$184K0.0%+31.9%0.023%
11/14/2025Wellington Management Group LLP2,457,805$22.86M0.0%+163.6%2.896%
11/14/2025Portolan Capital Management LLC1,179,000$10.97M0.6%+62.0%1.389%
11/13/2025Menora Mivtachim Holdings LTD.3,208,394$29.84M0.2%+37.9%3.780%
11/13/2025 UBS Group AG312,987$2.91M0.0%+701.6%0.369%
11/13/2025 Connor Clark & Lunn Investment Management Ltd.944,552$8.78M0.0%+2.6%1.113%
11/13/2025Legal & General Group Plc43,374$403K0.0%+13.7%0.051%
11/13/2025 Russell Investments Group Ltd.151,635$1.41M0.0%+100.6%0.179%
11/13/2025 Blair William & Co. IL102,623$954K0.0%-5.1%0.121%
11/12/2025 Alpha Family Trust658,935$6.13M2.9%-22.6%0.776%
11/12/2025ARK Investment Management LLC230,053$2.14M0.0%-5.1%0.271%
11/12/2025Cresset Asset Management LLC10,468$97K0.0%-65.2%0.012%
11/12/2025 Legato Capital Management LLC109,711$1.02M0.1%+41.0%0.129%
11/12/2025 First Eagle Investment Management LLC545,001$5.07M0.0%+221.5%0.642%
11/12/2025 Royce & Associates LP494,328$4.60M0.0%N/A0.582%
11/10/2025 Y.D. More Investments Ltd1,182,798$11.34M0.6%-4.2%1.394%
11/7/2025 CenterBook Partners LP1,180,966$10.98M0.5%-18.1%1.392%
11/7/2025 JPMorgan Chase & Co.21,525$200K0.0%-83.7%0.025%
11/6/2025 Essex Investment Management Co. LLC380,793$3.54M0.5%+45.9%0.449%
11/6/2025 Oppenheimer & Co. Inc.99,602$926K0.0%-4.6%0.117%
11/5/2025Fullcircle Wealth LLC15,000$140K0.0%N/A0.018%
11/3/2025New York State Common Retirement Fund849,745$7.90M0.0%N/A1.001%
11/3/2025 Federated Hermes Inc.31,000$288K0.0%-35.4%0.037%
10/30/2025 Migdal Insurance & Financial Holdings Ltd.3,106,157$28.89M0.3%+3.3%3.660%
8/15/2025Tidal Investments LLC61,574$483K0.0%+66.4%0.073%
8/15/2025Man Group plc26,700$209K0.0%N/A0.031%
8/15/2025Lazard Asset Management LLC14,984$117K0.0%-25.4%0.018%
8/15/2025Engineers Gate Manager LP102,311$802K0.0%+375.8%0.121%
8/15/2025 BNP Paribas Financial Markets43,914$344K0.0%-40.5%0.052%
8/15/2025Bank of America Corp DE11,461$90K0.0%-91.8%0.014%
8/15/2025Ameriprise Financial Inc.143,478$1.13M0.0%-1.6%0.169%
8/14/2025PDT Partners LLC98,388$771K0.0%+3.9%0.116%
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8/14/2025California State Teachers Retirement System49,654$389K0.0%+29.7%0.059%
8/14/2025Nebula Research & Development LLC18,647$146K0.0%N/A0.022%
8/14/2025Menora Mivtachim Holdings LTD.2,326,742$18.24M0.1%+3.6%2.742%
8/14/2025Qube Research & Technologies Ltd111,929$878K0.0%N/A0.132%
8/14/2025Hood River Capital Management LLC78,446$615K0.0%+20.7%0.092%
8/14/2025 Federated Hermes Inc.48,000$376K0.0%+52.4%0.057%
8/14/2025Formula Growth Ltd.100,000$784K0.3%N/A0.118%
8/13/2025Jump Financial LLC185,820$1.46M0.0%N/A0.219%
8/13/2025Cresset Asset Management LLC30,103$236K0.0%-13.7%0.035%
8/13/2025Marshall Wace LLP170,942$1.34M0.0%-52.4%0.201%


SMWB Institutional Ownership - Frequently Asked Questions

During the previous two years, 123 institutional investors and hedge funds held shares of Similarweb. The most heavily invested institutionals were Phoenix Financial Ltd. ($32.10M), Menora Mivtachim Holdings LTD. ($29.84M), Migdal Insurance & Financial Holdings Ltd. ($28.89M), Schonfeld Strategic Advisors LLC ($22.54M), Wellington Management Group LLP ($22.22M), Jennison Associates LLC ($15.65M), and Penn Capital Management Company LLC ($11.91M).Learn more on Similarweb's institutional investors.

57.59% of Similarweb's stock is owned by institutional investors. Learn more on SMWB's institutional investor holdings.

Of the 113 institutional investors that purchased Similarweb's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Wellington Management Group LLP ($3.07M), Jennison Associates LLC ($1.89M), CenterBook Partners LP ($1.67M), Schonfeld Strategic Advisors LLC ($1.59M), Menora Mivtachim Holdings LTD. ($1.52M), T. Rowe Price Investment Management Inc. ($1.41M), and Migdal Insurance & Financial Holdings Ltd. ($1.39M).

Institutional investors have bought a total of 8,318,758 shares in the last 24 months. This purchase volume represents approximately $59.61M in transactions.

Of the 13 institutional investors that sold Similarweb's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: CenterBook Partners LP ($219.97K), Millennium Management LLC ($153.11K), JPMorgan Chase & Co. ($110.69K), State Street Corp ($61.06K), Penn Capital Management Company LLC ($57.41K), Verition Fund Management LLC ($51.03K), and Engineers Gate Manager LP ($31.59K).

Institutional investors have sold a total of 796,358 shares in the last 24 months. This volume of shares sold represents approximately $6.13M in transactions.


Related Companies

Institutional ownership data for NYSE:SMWB is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 11/14/2026. New 13F filings are added each quarter as they're published.
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