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%

Performance for 2026 Q1 is 4.48%, and YTD is 4.48%, and 2025 is 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.

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.

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

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 inc	31,191,900
rambus inc del	28,718,300
toast inc	19,406,000
adtran holdings inc	15,347,300
f5 inc	14,523,200
lionsgate studios corp	9,982,560
energy fuels inc	9,262,880
sphere entertainment co	8,610,700

New stocks bought by Shannon River Fund Management LLC

Additions

Ticker	% Inc.
axon enterprise inc	129
hinge health inc	78.78
marvell technology inc	49.22
live nation entertainment in	15.25
interdigital inc	1.15
legence corp	0.83
palantir technologies inc	0.64

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	%
Technology	43.8
Others	29.4
Communication Services	11.7
Consumer Cyclical	7.6
Industrials	3.8
Real Estate	2
Energy	1.8

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-CAP	54.5
UNALLOCATED	29.4
MID-CAP	8.6
SMALL-CAP	6.7

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	%
Others	56.1
S&P 500	23.1
RUSSELL 2000	20.8

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.

Last Reported on: 14 May, 2026

Ticker	Namesorted ascending	% Portfolio	Shares Held	$ Value	Type	% Change
ABNB	airbnb inc	5.95	247,006	31,191,900	new

ADTN	adtran holdings inc	2.93	1,219,980	15,347,300	new

AMBA	ambarella inc	1.13	114,940	5,916,540	reduced	-61.83

APP	applovin corp	1.10	14,480	5,763,040	new

AXON	axon enterprise inc	3.84	47,442	20,148,100	added	129

CCCS	ccc intelligent solutions hl	0.00	0.00	0.00	sold off	-100

CLS	celestica inc	2.88	53,495	15,068,500	reduced	-50.07

COHR	coherent corp	4.00	87,905	20,939,800	reduced	-47.65

CRDO	credo technology group holdi	0.00	0.00	0.00	sold off	-100

CWAN	clearwater analytics hldgs i	0.00	0.00	0.00	sold off	-100

DLR	digital rlty tr inc	1.03	29,838	5,377,110	new

DOCU	docusign inc	0.00	0.00	0.00	sold off	-100

EQIX	equinix inc	0.95	5,102	5,001,180	new

EXTR	extreme networks	3.78	1,313,060	19,801,000	reduced	-31.06

FFIV	f5 inc	2.77	50,196	14,523,200	new

FLEX	flextronics intl ltd	3.89	311,223	20,372,700	reduced	-0.65

GWRE	guidewire software inc	1.79	62,863	9,401,790	reduced	-50.13

IDCC	interdigital inc	3.12	54,104	16,339,400	added	1.15

LYV	live nation entertainment in	8.57	294,398	44,898,600	added	15.25

MRVL	marvell technology inc	10.65	563,573	55,821,900	added	49.22