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Similarweb
SMWB

54 hedge funds and large institutions have $149M invested in Similarweb in 2023 Q4 according to their latest regulatory filings, with 10 funds opening new positions, 17 increasing their positions, 12 reducing their positions, and 5 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more first-time investments, than exits

New positions opened: 10 | Existing positions closed: 5

42% more repeat investments, than reductions

Existing positions increased: 17 | Existing positions reduced: 12

6% more funds holding

Funds holding: 51 → 54 (+3)

7.53% less ownership

Funds ownership: 43.41% → 35.87% (-7.5%)

30% less capital invested

Capital invested by funds: $214M → $149M (-$65.1M)

50% less funds holding in top 10

Funds holding in top 10: 4 → 2 (-2)

75% less call options, than puts

Call options by funds: $1K | Put options by funds: $4K

Holders
54
Holders Change
+3
Holders Change %
+5.88%
% of All Funds
0.79%
Holding in Top 10
2
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-50%
% of All Funds
0.03%
New
10
Increased
17
Reduced
12
Closed
5
Calls
$1K
Puts
$4K
Net Calls
-$3K
Net Calls Change
+$3K

Top Buyers

1
N
Nuveen
North Carolina
+$666K
2
Millennium Management
Millennium Management
New York
+$567K
3
Morgan Stanley
Morgan Stanley
New York
+$499K
4
Citadel Advisors
Citadel Advisors
Florida
+$489K
5
Renaissance Technologies
Renaissance Technologies
New York
+$472K

Top Sellers

1
PCM
Portolan Capital Management
Massachusetts
-$3.33M
2
1CM
1492 Capital Management
Wisconsin
-$977K
3
Tudor Investment Corp
Tudor Investment Corp
Connecticut
-$883K
4
William Blair & Company
William Blair & Company
Illinois
-$665K
5
BAMCO Inc
BAMCO Inc
New York
-$350K
Name Holding Trade Value Shares
Change 		Change in
Stake
N
1
Naspers
South Africa
$59.6M – – –
PF
2
Phoenix Financial
Israel
$25.3M – – –
UM
3
Ulysses Management
New York
$12.2M – – –
PCM
4
Portolan Capital Management
Massachusetts
$10.2M -$3.33M -636,360 -25%
AFT
5
Alpha Family Trust
California
$8.96M – – –
MIFH
6
Migdal Insurance & Financial Holdings
Israel
$8.46M – – –
YDMI
7
Y.D. More Investments
Israel
$8.06M – – –
AIM
8
ARK Investment Management
Florida
$1.82M +$160K +30,543 +10%
OWP
9
Old Well Partners
North Carolina
$1.32M -$31.1K -5,940 -2%
SGM
10
Scalar Gauge Management
Texas
$1.19M +$1.17M +222,919 New
BlackRock
11
BlackRock
New York
$1.18M -$12.8K -2,447 -1%
Morgan Stanley
12
Morgan Stanley
New York
$965K +$499K +95,277 +111%
Ameriprise
13
Ameriprise
Minnesota
$830K -$124K -23,756 -13%
HCM
14
Horrell Capital Management
Arkansas
$725K – – –
CG
15
Circumference Group
Arkansas
$725K +$712K +136,000 New
Millennium Management
16
Millennium Management
New York
$715K +$567K +108,248 +419%
N
17
Nuveen
North Carolina
$678K +$666K +127,127 New
Renaissance Technologies
18
Renaissance Technologies
New York
$672K +$472K +90,100 +251%
State Street
19
State Street
Massachusetts
$628K +$300K +57,217 +94%
GCP
20
GSA Capital Partners
United Kingdom
$571K +$102K +19,486 +22%
Squarepoint
21
Squarepoint
New York
$522K +$189K +36,158 +59%
Citadel Advisors
22
Citadel Advisors
Florida
$498K +$489K +93,392 New
Federated Hermes
23
Federated Hermes
Pennsylvania
$293K – – –
Swiss National Bank
24
Swiss National Bank
Switzerland
$288K -$33.5K -6,400 -11%
Two Sigma Investments
25
Two Sigma Investments
New York
$270K +$266K +50,738 New
1
2 3

SMWB Hedge Fund Activity: Q4 2023 in Review

54 of the 6,859 institutional investors tracked by Wall St. Rank reported a position in Similarweb (SMWB) for Q4 2023, worth a combined $149M — down 30% from $214M a quarter earlier.

Buyers outnumbered sellers: 10 funds opened new SMWB positions and 5 closed out — a net gain of 5 holders — while 17 added to existing stakes and 12 trimmed.

The largest buyer was Nuveen, opening a new position worth an estimated $666K. The largest seller was Portolan Capital Management, cutting an estimated $3.33M.

  • 54 institutional investors held Similarweb (SMWB) as of Q4 2023, up from 51 in Q3 2023.
  • Funds reported $149M of Similarweb stock for Q4 2023, down 30% quarter-over-quarter.
  • 10 funds opened new Similarweb positions in Q4 2023 and 5 closed out, a net change of +5 holders.
  • The largest Similarweb buyer in Q4 2023 was Nuveen, an estimated $666K added.
  • The largest Similarweb seller in Q4 2023 was Portolan Capital Management, an estimated $3.33M sold.

Based on aggregated 13F filings for Q4 2023.