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SRFM

Shannon River Fund Management Portfolio holdings

AUM $524M
1-Year Est. Return 90.54%
This Fund
S&P 500
This Quarter Est. Return
+11.62%
1 Year Est. Return
+90.54%
3 Year Est. Return
+337.23%
5 Year Est. Return
+451.33%
10 Year Est. Return
+3,164.49%
AUM
$638M
AUM Growth
+$16.3M
Cap. Flow
-$12.7M
Cap. Flow %
-2%
Top 10 Hldgs %
63.01%
Holding
32
New
12
Increased
3
Reduced
9
Closed
6

Top Buys

Rank Stock Value
1
U icon
Unity
U
+$43.4M
2
LYV icon
Live Nation Entertainment
LYV
+$36.7M
3
EXTR icon
Extreme Networks
EXTR
+$35M
4
CLS icon
Celestica
CLS
+$32.3M
5
ALAB icon
Astera Labs
ALAB
+$28M

Top Sells

Rank Stock Value
1
IDCC icon
InterDigital
IDCC
+$44.3M
2
FROG icon
JFrog
FROG
+$40.9M
3
FORM icon
FormFactor
FORM
+$35.3M
4
TSEM icon
Tower Semiconductor
TSEM
+$34.6M
5
WIX icon
WIX.com
WIX
+$34.3M

Sector Composition

Rank Sector Weight
1 Technology 88.48%
2 Communication Services 5.71%
3 Industrials 4.11%
4 Healthcare 1.7%
5 Consumer Staples 0%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
WIX icon
26
WIX.com
WIX
$2.76B
$4.85M 0.76%
46,731
-283,352
-86% -$34.3M
BLZE icon
27
Backblaze
BLZE
$1.15B
– –
-229,384
Closed -$2.13M
CLH icon
28
Clean Harbors
CLH
$16.4B
– –
-115,870
Closed -$26.9M
FORM icon
29
FormFactor
FORM
$9.07B
– –
-968,161
Closed -$35.3M
FROG icon
30
JFrog
FROG
$10.5B
– –
-863,924
Closed -$40.9M
LRN icon
31
Stride
LRN
$3.52B
– –
-82,928
Closed -$12.4M
TSM icon
32
TSMC
TSM
$2.16T
– –
-8,701
Closed -$2.43M
1
2

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Shannon River Fund Management's Q4 2025 Portfolio in Review

As of Q4 2025, Shannon River Fund Management held 32 positions worth $638M, up 2.6% from $621M the previous quarter. Its ten largest holdings account for 63% of the portfolio.

Shannon River Fund Management's Q4 2025 filing shows 12 new, 3 increased, 9 reduced and 6 closed positions. Its largest new stake was Unity: 1,065,452 shares worth $47.1M. The largest sale was InterDigital, an estimated $44.3M.

By sector, the portfolio is most concentrated in Technology at 88% of assets, down from 94% a quarter earlier, followed by Communication Services and Industrials.

  • Shannon River Fund Management's largest Q4 2025 buy was Unity: 1,065,452 shares worth $47.1M.
  • Shannon River Fund Management added most to Coherent in Q4 2025, an estimated $11.8M increase.
  • Shannon River Fund Management's biggest Q4 2025 reduction was InterDigital, cutting an estimated $44.3M.
  • Shannon River Fund Management fully exited JFrog in Q4 2025, selling an estimated $40.9M.
  • Shannon River Fund Management's ten largest holdings make up 63% of its $638M portfolio in Q4 2025.
  • Shannon River Fund Management opened 12 new positions and closed 6 in Q4 2025.
  • Shannon River Fund Management's portfolio value rose 2.6% quarter-over-quarter to $638M.

Based on Shannon River Fund Management's 13F filing for Q4 2025, filed 17 Feb 2026.