SMWB Institutional Ownership
Who owns Similarweb Ltd. and what the big funds did with it last quarter, from every SEC 13F filing. 70 funds reported holding SMWB at Jun 30, 2026.
- ▼35 buying vs 47 selling
- ▼Shares held by funds -4.9%
- ▼Funds holding -11
- ▼Superinvestors: 1 added, 4 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 70 | 81 | −13.6% |
| In funds' top 10 | 7 | 4 | +75.0% |
| 13F shares | 50.9M | 53.5M | −4.9% |
| Held by funds | – | – | – |
| New positions | 16 | 18 | −11.1% |
| Increased | 19 | 31 | −38.7% |
| Reduced | 20 | 18 | +11.1% |
| Sold out | 27 | 37 | −27.0% |
| Calls (shares) | 0 | 0 | – |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | – | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in SMWB
All superinvestors →
Who owns SMWB
share of fund held shares- Index and passive funds0.4%
- Active managers and hedge funds96.4%
- Banks and brokers3.0%
- Pensions, insurers and other0.2%
The top 10 holders own 79.5% of all SMWB shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
12 funds changed their position- HERALD INVESTMENT MANAGEMENT LtdSold out−645K sh
- CenterBook Partners LPAdded+281K sh
- Y-Intercept (Hong Kong) LtdNew+262K sh
- Wealth Enhancement Advisory Services, LLCNew+29K sh
- State of WyomingAdded+30K sh
🔒 Free account: see all 12.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Naspers Ltd | – | 11.2M | $68.5M | 0 |
| 2 | Viola Growth Management Fund 2 Ltd. | – | 10.8M | $66.3M | – |
| 3 | Menora Mivtachim Holdings Ltd. | – | 4M | $24.6M | 0 |
| 4 | Wellington Management Group LLP | – | 3.6M | $22.2M | +658K |
| 5 | ION Crossover Partners Ltd | – | 3M | $18.6M | 0 |
| 6 | Ulysses Management LLC | – | 2.9M | $18M | −70K |
| 7 | S Squared Technology, LLC | – | 1.7M | $10.4M | +90K |
| 8 | Schonfeld Strategic Advisors LLC | – | 1.2M | $7.4M | +921K |
| 9 | Y.D. More Investments Ltd | – | 1.1M | $7M | −4,263 |
| 10 | ARK Investment Management LLC | – | 835K | $5.1M | +483K |
- Schonfeld Strategic Advisors LLC+921K sh+$5.6M
- Wellington Management Group LLP+658K sh+$4M
- Lotus Technology Management, LP+531K sh+$3.4M
- ARK Investment Management LLC+483K sh+$3M
- Jane Street Group, LLC+282K sh+$1.7M
- Nano Cap New Millennium Growth Fund L P+260K sh+$1.6M
- UBS Group AG+205K sh+$1.3M
- PEAK6 LLC+164K sh+$1M
- Millennium Management LLC−808K sh−$5M
- CenterBook Partners LP−725K sh−$4.4M
- Marshall Wace, LLP−577K sh−$3.5M
- Acadian Asset Management LLC−399K sh−$2.4M
- Qube Research & Technologies Ltd−384K sh−$2.4M
- Mirabella Financial Services LLP−793K sh−$2.1M
- Morgan Stanley−324K sh−$2M
- Militia Capital Management LLC−691K sh−$1.8M
SMWB institutional ownership FAQ
Who owns the most SMWB stock?
In Q2 2026 13F filings the largest holder of SMWB was Naspers Ltd, followed by Viola Growth Management Fund 2 Ltd. and Menora Mivtachim Holdings Ltd.. Index fund managers are usually the biggest holders of large companies.
What percentage of SMWB is owned by institutions?
70 funds reported holding 50.9M SMWB shares at Jun 30, 2026.
Are hedge funds buying SMWB?
In Q2 2026, 35 funds bought SMWB (16 of them new positions) and 47 sold (27 sold out completely). Among well known investors, 1 added and 4 cut. Our fund sentiment for SMWB is strongly bearish.
What is SMWB's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this SMWB ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.