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Latest Shannon River Fund Management LLC Stock Portfolio

$524Million | No. of Holdings #28

Shannon River Fund Management LLC Performance

2026 Q1+4.48%
YTD+4.48%
2025+17.72%

About Shannon River Fund Management LLC and 13F Hedge Fund Stock Holdings

On 2026-05-14, the fund reported it's updated stock portfolio. In the 13F Holdings report, Shannon River Fund Management LLC reported an equity portfolio of $524.1 Millions as of 31 Mar, 2026. <br><br> The top stock holdings of Shannon River Fund Management LLC are TSEM, MRVL, LYV. The fund has invested 16.9% of it's portfolio in TOWER SEMICONDUCTOR LTD and 10.7% of portfolio in MARVELL TECHNOLOGY INC. <br><br> The fund managers got completely rid off PEGASYSTEMS INC (PEGA), UNITY SOFTWARE INC (U) and CLEARWATER ANALYTICS HLDGS I (CWAN) stocks. They significantly reduced their stock positions in ASTERA LABS INC, AMBARELLA INC (AMBA) and GUIDEWIRE SOFTWARE INC (GWRE). Shannon River Fund Management LLC opened new stock positions in AIRBNB INC (ABNB), RAMBUS INC DEL (RMBS) and TOAST INC (TOST). The fund showed a lot of confidence in some stocks as they added substantially to AXON ENTERPRISE INC (AXON), HINGE HEALTH INC and MARVELL TECHNOLOGY INC (MRVL).
Shannon River Fund Management LLC Equity Portfolio Value
Last Reported on: 14 May, 2026
$524Million
  as of May 14, 2026

Shannon River Fund Management LLC Annual Return Estimates Vs S&P 500

Our best estimate is that Shannon River Fund Management LLC made a return of 4.48% in the last quarter. In trailing 12 months, it's portfolio return was 39.4%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
airbnb inc31,191,900
rambus inc del28,718,300
toast inc19,406,000
adtran holdings inc15,347,300
f5 inc14,523,200
lionsgate studios corp9,982,560
energy fuels inc9,262,880
sphere entertainment co8,610,700
New stocks bought by Shannon River Fund Management LLC

Additions

Ticker% Inc.
axon enterprise inc129
hinge health inc78.78
marvell technology inc49.22
live nation entertainment in15.25
interdigital inc1.15
legence corp0.83
palantir technologies inc0.64
Additions to existing portfolio by Shannon River Fund Management LLC

Reductions

Ticker% Reduced
astera labs inc-71.73
ambarella inc-61.83
guidewire software inc-50.13
celestica inc-50.07
coherent corp-47.65
extreme networks-31.06
tower semiconductor ltd-16.35
flextronics intl ltd-0.65
Shannon River Fund Management LLC reduced stake in above stock

Sold off

Ticker$ Sold
clearwater analytics hldgs i-29,822,300
ncino inc-29,125,000
ccc intelligent solutions hl-8,550,590
unity software inc-47,061,000
pegasystems inc-62,039,000
klaviyo inc-23,693,500
docusign inc-10,726,000
credo technology group holdi-21,578,600
Shannon River Fund Management LLC got rid off the above stocks

Sector Distribution

Shannon River Fund Management LLC has about 43.8% of it's holdings in Technology sector.

  • Technology
  • Others
  • Communication Services
  • Consumer Cyclical
  • Industrials
  • Real Estate
  • Energy
Sector%
Technology43.8
Others29.4
Communication Services11.7
Consumer Cyclical7.6
Industrials3.8
Real Estate2
Energy1.8

Market Cap. Distribution

Shannon River Fund Management LLC has about 54.5% of it's portfolio invested in the large-cap and mega-cap stocks.

  • LARGE-CAP
  • UNALLOCATED
  • MID-CAP
  • SMALL-CAP
Category%
LARGE-CAP54.5
UNALLOCATED29.4
MID-CAP8.6
SMALL-CAP6.7

Stocks belong to which Index?

About 43.9% of the stocks held by Shannon River Fund Management LLC either belong to S&P 500 or RUSSELL 2000 index.

  • Others
  • S&P 500
  • RUSSELL 2000
Index%
Others56.1
S&P 50023.1
RUSSELL 200020.8
Top 5 Winners (%)%
TSEM
tower semiconductor ltd
45.4 %
legence corp
31.0 %
COHR
coherent corp
22.1 %
MRVL
marvell technology inc
13.5 %
FLEX
flextronics intl ltd
8.3 %
Top 5 Winners ($)$
TSEM
tower semiconductor ltd
32.1 M
COHR
coherent corp
6.9 M
MRVL
marvell technology inc
6.6 M
legence corp
4.5 M
LYV
live nation entertainment in
2.8 M
Top 5 Losers (%)%
astera labs inc
-21.9 %
AXON
axon enterprise inc
-19.5 %
GWRE
guidewire software inc
-19.2 %
AMBA
ambarella inc
-18.9 %
PLTR
palantir technologies inc
-17.7 %
Top 5 Losers ($)$
astera labs inc
-6.1 M
AXON
axon enterprise inc
-4.9 M
GWRE
guidewire software inc
-4.9 M
AMBA
ambarella inc
-4.0 M
hinge health inc
-2.6 M

Shannon River Fund Management LLC Holdings Map

This heatmap illustrates the top 50 positions within the fund's portfolio.

Current Stock Holdings of Shannon River Fund Management LLC

Shannon River Fund Management LLC has 28 stocks in it's portfolio. About 66.7% of the portfolio is in top 10 stocks. proved to be the most loss making stock for the portfolio. TSEM was the most profitable stock for Shannon River Fund Management LLC last quarter.

$524.08MTotal Value
39.00Positions
14 May, 2026Last Reported
Current holdings of Current Stock Holdings of Shannon River Fund Management LLC, last reported on 14 May, 2026. Select a row with a linked ticker to view its historical trend.
ExpandHoldingsorted ascending% PortfolioShares Held$ Value% Change
CLS
Celestica Inc

Celestica Inc

CLS
Shannon River Fund Management LLC's holding in Celestica Inc over time
2.88%53,495
$15.07M
2.88%
decreased 50.07 percentreduced