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Latest Shannon River Fund Management LLC Stock Portfolio

$1.12Billion | No. of Holdings #37

Shannon River Fund Management LLC Performance

2026 Q2+18.28%
YTD+23.58%
2025+17.72%

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

On 2026-08-13, the fund reported it's updated stock portfolio. In the 13F Holdings report, Shannon River Fund Management LLC reported an equity portfolio of $1.1 Billions as of 30 Jun, 2026. <br><br> The top stock holdings of Shannon River Fund Management LLC are TSEM, FLEX, AMD. The fund has invested 8.9% of it's portfolio in TOWER SEMICONDUCTOR LTD and 5.5% of portfolio in FLEX LTD. <br><br> The fund managers got completely rid off MARVELL TECHNOLOGY INC (MRVL), AXON ENTERPRISE INC (AXON) and TOAST INC (TOST) stocks. They significantly reduced their stock positions in LIVE NATION ENTERTAINMENT IN (LYV), TOWER SEMICONDUCTOR LTD (TSEM) and RAMBUS INC DEL (RMBS). Shannon River Fund Management LLC opened new stock positions in ADVANCED MICRO DEVICES INC (AMD), KULICKE & SOFFA INDS INC (KLIC) and TWILIO INC (TWLO). The fund showed a lot of confidence in some stocks as they added substantially to INTERDIGITAL INC (IDCC), DIGITAL RLTY TR INC (DLR) and CELESTICA INC (CLS).
Shannon River Fund Management LLC Equity Portfolio Value
Last Reported on: 13 Aug, 2026
$1.12Billion
  as of Aug 13, 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 18.28% in the last quarter. In trailing 12 months, it's portfolio return was 45.88%.
  • Performance
  • S&P 500

New Buys

Ticker$ Bought
advanced micro devices inc61,431,800
kulicke & soffa inds inc44,780,300
twilio inc41,545,000
ciena corp39,881,500
quantinuum inc38,365,100
universal technical inst inc38,070,100
take-two interactive softwar34,504,500
ouster inc28,088,000
New stocks bought by Shannon River Fund Management LLC

Additions

Ticker% Inc.
interdigital inc240
digital rlty tr inc197
celestica inc161
guidewire software inc80.12
coherent corp47.07
hinge health inc34.53
flex ltd22.05
extreme networks inc8.46
Additions to existing portfolio by Shannon River Fund Management LLC

Reductions

Ticker% Reduced
live nation entertainment in-26.62
tower semiconductor ltd-24.06
rambus inc del-12.61
Shannon River Fund Management LLC reduced stake in above stock

Sold off

Ticker$ Sold
adtran holdings inc-15,347,300
toast inc-19,406,000
marvell technology inc-55,821,900
energy fuels inc-9,262,880
legence corp-19,063,000
ambarella inc-5,916,540
axon enterprise inc-20,148,100
astera labs inc-5,194,380
Shannon River Fund Management LLC got rid off the above stocks

Sector Distribution

Shannon River Fund Management LLC has about 40.4% of it's holdings in Technology sector.

  • Technology
  • Others
  • Communication Services
  • Consumer Cyclical
  • Consumer Defensive
  • Industrials
  • Financial Services
  • Real Estate
Sector%
Technology40.4
Others29.9
Communication Services15
Consumer Cyclical4.3
Consumer Defensive3.4
Industrials3.2
Financial Services2.3
Real Estate1.4

Market Cap. Distribution

Shannon River Fund Management LLC has about 42.4% of it's portfolio invested in the large-cap and mega-cap stocks.

  • LARGE-CAP
  • UNALLOCATED
  • MID-CAP
  • SMALL-CAP
  • MEGA-CAP
Category%
LARGE-CAP36.5
UNALLOCATED27.8
MID-CAP23.4
SMALL-CAP6.3
MEGA-CAP5.9

Stocks belong to which Index?

About 48.5% of the stocks held by Shannon River Fund Management LLC either belong to S&P 500 or RUSSELL 2000 index.

  • Others
  • RUSSELL 2000
  • S&P 500
Index%
Others51.4
RUSSELL 200029.5
S&P 50019
Top 5 Winners (%)%
FLEX
flex ltd
118.5 %
EXTR
extreme networks inc
105.5 %
hinge health inc
87.5 %
lionsgate studios corp
59.2 %
RMBS
rambus inc del
50.9 %
Top 5 Winners ($)$
TSEM
tower semiconductor ltd
37.8 M
FLEX
flex ltd
33.4 M
EXTR
extreme networks inc
23.7 M
hinge health inc
21.7 M
COHR
coherent corp
17.0 M
Top 5 Losers (%)%
GWRE
guidewire software inc
-14.3 %
IDCC
interdigital inc
-4.1 %
DLR
digital rlty tr inc
-0.2 %
Top 5 Losers ($)$
GWRE
guidewire software inc
-2.3 M
IDCC
interdigital inc
-2.3 M
DLR
digital rlty tr inc
0.0 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 37 stocks in it's portfolio. About 49.6% of the portfolio is in top 10 stocks. GWRE 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.

$1.12BTotal Value
50.00Positions
13 Aug, 2026Last Reported
Current holdings of Current Stock Holdings of Shannon River Fund Management LLC, last reported on 13 Aug, 2026. Select a row with a linked ticker to view its historical trend.
ExpandHoldingsorted ascending% PortfolioShares Held$ Value% Change
CLS
Celestica Inc

Celestica Inc

CLS
Shannon River Fund Management LLC's holding in Celestica Inc over time
4.56%139,964
$51.06M
4.56%
increased 161.64 percentadded