13FBOX
SIMILARWEB LTD · 13F Institutional Holdings
Options Calculator Rankings
S

SIMILARWEB LTD

SMWB
Institutions
72
Combined AUM (Q2 2026)
$313.9M
Combined Shares (Q2 2026)
51.2M
Overall Trend
Decrease
All institutions combined
📥 Inflow (Q1 2026→Q2 2026)
+15.7M
38 · 18 New Buys · ≈
📤 Outflow (Q1 2026→Q2 2026)
-17.5M
48 · 28 Exit · ≈
⚖️ Net
-1.8M
Net Sell
💰 Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$313.9M
Institutions
72
New Buys
18
Adds
20
Reduces
20
Exits
28
Unchanged
14
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
NASPERS LTD
81.19%11.53%#2$68.5M11.2M$29.2M11.2M00.00%Unchanged
Viola Growth Management Fund 2 Ltd.
93.15%#1$66.3M10.8M$00+10.8MNew Buy
MENORA MIVTACHIM HOLDINGS LTD.
0.1%0.05%#19$24.6M4.0M$10.5M4.0M00.00%Unchanged
WELLINGTON MANAGEMENT GROUP LLP
<0.01%<0.01%#35$22.2M3.6M$7.7M3.0M+657,928+22.18%Add
ION Crossover Partners Ltd
24.88%29.29%#3$18.6M3.0M$22.7M3.0M00.00%Unchanged
Ulysses Management LLC
3.55%0.98%#5$18.0M2.9M$7.8M3.0M-70,000-2.33%Reduce
S SQUARED TECHNOLOGY, LLC
3.21%1.58%#6$10.4M1.7M$4.2M1.6M+90,000+5.63%Add
Schonfeld Strategic Advisors LLC
0.03%0.01%#27$7.4M1.2M$754,743289,174+921,455+318.65%Add
Y.D. More Investments Ltd
0.21%0.33%#16$7.0M1.1M$8.3M1.2M-4,263-0.37%Reduce
ARK Investment Management LLC
0.03%0.01%#25$5.1M834,663$918,903352,070+482,593+137.07%Add
RENAISSANCE TECHNOLOGIES LLC
0.01%<0.01%#32$4.4M713,728$1.9M739,673-25,945-3.51%Reduce
CDC Financial, Inc.
1.73%1.06%#9$4.1M674,233$1.7M639,014+35,219+5.51%Add
Alpha Family Trust
1.62%1.1%#10$4.0M658,935$2.3M658,93500.00%Unchanged
NANO CAP NEW MILLENNIUM GROWTH FUND L P
3.08%0.95%#7$4.0M650,000$1.0M390,000+260,000+66.67%Add
HERALD INVESTMENT MANAGEMENT Ltd
0.54%0.23%#13$4.0M645,465$1.7M645,46500.00%Unchanged
P.A.W. CAPITAL CORP
3.06%3.55%#8$3.9M640,000$1.3M500,000+140,000+28.00%Add
Sphera Management Technology Funds Ltd
1.32%0.9%#11$3.8M615,000$1.6M615,00000.00%Unchanged
JANE STREET GROUP, LLC
<0.01%<0.01%#45$3.7M601,977$603,604231,266+370,711+160.30%Add
CenterBook Partners LP
0.18%0.19%#17$3.7M599,737$3.5M1.3M-725,376-54.74%Reduce
Lotus Technology Management, LP
4.18%#4$3.4M531,409$00+531,409New Buy
PEAK6 LLC
0.01%<0.01%#31$3.0M487,822$996,383381,756+106,066+27.78%Add
Connor, Clark & Lunn Investment Management Ltd.
0.01%<0.01%#33$2.7M445,691$1.4M533,634-87,943-16.48%Reduce
UBS Group AG
<0.01%<0.01%#44$2.5M403,328$518,197198,543+204,785+103.14%Add
CITADEL ADVISORS LLC
<0.01%<0.01%#47$2.5M399,935$1.6M600,105-200,170-33.36%Reduce
MORGAN STANLEY
<0.01%<0.01%#53$1.6M268,203$2.8M299,528-31,325-10.46%Reduce
LAVELLE CAPITAL LP
0.54%0.33%#14$1.2M202,727$529,117202,72700.00%Unchanged
Persistent Asset Partners Ltd
0.34%0.18%#15$1.1M180,000$469,800180,00000.00%Unchanged
SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC
0.02%0.01%#28$1.0M169,885$327,876125,623+44,262+35.23%Add
D. E. Shaw & Co., Inc.
<0.01%<0.01%#42$980,402159,935$152,82158,552+101,383+173.15%Add
ANTIPODES PARTNERS Ltd
0.02%#29$892,534145,601$00+145,601New Buy
SUSQUEHANNA INTERNATIONAL GROUP, LLP
<0.01%#56$848,496138,417$00+138,417New Buy
BlackRock, Inc.
<0.01%<0.01%#63$818,557133,533$332,785127,504+6,029+4.73%Add
TWO SIGMA INVESTMENTS, LP
<0.01%<0.01%#41$795,987129,851$206,38879,076+50,775+64.21%Add
GROUP ONE TRADING LLC
<0.01%<0.01%#39$760,733124,100$2,088800+123,300+15,412.50%Add
MYDA Advisors LLC
0.09%#20$613,000100,000$00+100,000New Buy
Pathstone Holdings, LLC
<0.01%<0.01%#38$609,26199,390$131,51850,390+49,000+97.24%Add
GSA CAPITAL PARTNERS LLP
0.04%0.02%#23$587,86195,899$397,000152,105-56,206-36.95%Reduce
State of Wyoming
0.05%#22$542,24888,458$00+88,458New Buy
STATE STREET CORP
<0.01%<0.01%#62$472,34177,054$285,524109,396-32,342-29.56%Reduce
Quadrature Capital Ltd
<0.01%<0.01%#36$418,10968,207$245,95194,234-26,027-27.62%Reduce
MARSHALL WACE, LLP
<0.01%<0.01%#46$373,81460,981$1.7M638,188-577,207-90.44%Reduce
Centiva Capital, LP
<0.01%<0.01%#37$281,48345,919$156,91860,122-14,203-23.62%Reduce
WealthTrust Axiom LLC
0.06%#21$273,18244,565$00+44,565New Buy
IMC-Chicago, LLC
<0.01%#58$229,91237,506$00+37,506New Buy
SIMPLEX TRADING, LLC
<0.01%<0.01%#52$202,69433,066$7,5792,904+30,162+1,038.64%Add
Qube Research & Technologies Ltd
<0.01%<0.01%#50$195,22231,847$1.1M416,146-384,299-92.35%Reduce
Militia Capital Partners, LP
0.03%#26$180,00030,000$00+30,000New Buy
LAZARD ASSET MANAGEMENT LLC
<0.01%<0.01%#49$144,46023,566$29,30511,228+12,338+109.89%Add
SG Americas Securities, LLC
<0.01%#55$135,25222,064$00+22,064New Buy
MILLENNIUM MANAGEMENT LLC
<0.01%<0.01%#60$111,55418,198$2.2M825,763-807,565-97.80%Reduce

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow