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CenterBook Partners’s Similarweb SMWB Stock Holding History

CenterBook Partners’s Portfolio SMWB Stock Details SMWB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$3.46M Buy
1,325,113
+364,117
+38% +$1.52M 0.19% 144
2025
Q4 		$7.2M Sell
960,996
-219,970
-19% -$1.77M 0.35% 71
2025
Q3 		$11M Sell
1,180,966
-260,844
-18% -$2.34M 0.54% 38
2025
Q2 		$11.3M Buy
1,441,810
+634,114
+79% +$4.75M 0.63% 35
2025
Q1 		$6.68M Buy
807,696
+609,365
+307% +$7.51M 0.43% 61
2024
Q4 		$2.81M Buy
198,331
+147,742
+292% +$1.63M 0.17% 163
2024
Q3 		$447K Buy
+50,589
New +$400K 0.03% 400

Other funds holding SMWB

N
Naspers South Africa $253M AUM 25.32% 1-Year Est. Return
MMH
Menora Mivtachim Holdings Ramat Gan, Israel $21.1B AUM 40.03% 1-Year Est. Return
YDMI
Y.D. More Investments Ramat Gan, Israel $2.55B AUM 104.35% 1-Year Est. Return
ICP
ION Crossover Partners Herzliya Pituach, Israel $36.9M AUM
UM
Ulysses Management New York $802M AUM 5.35% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
SST
S Squared Technology New York $264M AUM 73.25% 1-Year Est. Return
AFT
Alpha Family Trust Los Angeles, California $206M AUM 35.6% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
MFS
Mirabella Financial Services London, United Kingdom $1.06B AUM 19.83% 1-Year Est. Return

CenterBook Partners's SMWB Position: Q1 2026 in Review

CenterBook Partners increased its Similarweb (SMWB) stake by 38% in Q1 2026, buying an estimated $1.52M and bringing the position to 1,325,113 shares worth $3.46M. The position accounts for 0.19% of the portfolio, ranked #144.

CenterBook Partners first reported a position in SMWB in Q3 2024 and has held it in 7 quarters since. The position peaked at $11.3M in Q2 2025. 79 funds tracked by Wall St. Rank hold SMWB as of Q1 2026.

  • CenterBook Partners held 1,325,113 shares of Similarweb worth $3.46M as of Q1 2026.
  • CenterBook Partners bought 364,117 Similarweb shares in Q1 2026, an estimated $1.52M.
  • Similarweb made up 0.19% of CenterBook Partners's portfolio in Q1 2026, its #144 holding.
  • CenterBook Partners first reported a position in Similarweb in Q3 2024 and has held it in 7 quarters since.
  • CenterBook Partners's Similarweb position peaked at $11.3M in Q2 2025.
  • 79 funds tracked by Wall St. Rank held Similarweb as of Q1 2026.

Based on CenterBook Partners's 13F filing for Q1 2026, filed 5 May 2026.