Shannon River Fund Management LLC

Name: Shannon River Fund Management LLC 13F holdings, Q4 2024
Creator: Shannon River Fund Management LLC
Published: 2025-02-13

Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q3 2024Q2 2024Q1 2024

In its 13F for Q4 2024 (holdings as of December 31, 2024, filed February 13, 2025), Shannon River Fund Management LLC reported 17 stock positions worth $565.7 million. Its top holding was Pegasystems (PEGA) at 13.2% of the portfolio, followed by Interdigital (IDCC, 13.1%) and Marvell Technology (MRVL, 12.7%). Compared with Q3 2024, it opened 6 new positions, sold out of 7, added to 1 and reduced 10. The biggest buy was a new position in Wix Ltd. (wix 0 08/15/25) and the biggest sale an exit from Wix.com (WIX).

Most Recent 13F: Q2 2026
Location: NEW YORK, NY
CIK: 0001301050
Portfolio Value: $565.7M (Q4 2024)
SEC Filing: 0001013594-25-000260 ↗ filed Feb 13, 2025

Holdings Value

Holdings 17 stocks · $565.7M


PEGA Pegasystems Inc.	13.15%	798,356	$74.4M	Add +1.3%
IDCC Interdigital Inc.	13.07%	381,645	$73.9M	Reduce -19.2%
MRVL Marvell Technology Inc.	12.73%	652,207	$72.0M	Reduce -6.4%
WIX LTD (WIX 0 08/15/25) filed as WIX COM LTD	11.43%	301,446	$64.7M	New
TSEM Tower Semiconductor Ltd.	9.89%	1,085,891	$55.9M	Reduce -18.9%
CWAN Clearwater Analytics HDS-A	9.06%	1,862,813	$51.3M	Reduce -23.9%
FLEX Flex Ltd.	6.85%	1,009,056	$38.7M	Reduce -21.0%
PYPL PayPal Holdings Inc.	4.07%	269,470	$23.0M	Reduce -3.4%
BL Blackline Inc.	3.50%	326,313	$19.8M	New
GPN Global Payments Inc.	3.14%	158,356	$17.7M	New
CART Maplebear Inc.	3.03%	414,065	$17.2M	Reduce -6.0%
INFA Informatica Inc. Class A	2.85%	622,431	$16.1M	Reduce -61.1%
CFLT Confluent Inc. Class A	1.77%	359,019	$10.0M	New
GWRE Guidewire Software Inc.	1.77%	59,532	$10.0M	Reduce -62.6%
TALK Talkspace Inc.	1.76%	3,226,598	$10.0M	Reduce -34.1%
NATL NCR Atleos Corp.	1.76%	293,000	$9.9M	New
DOCU Docusign Inc.	0.16%	10,000	$899K	New

Options reported separately and not counted above: SPY puts ($87.9M), MRVL puts ($24.0M).

Portfolio Sells Q3 2024 → Q4 2024


WIX Wix.com Ltd.	Sold out	0.00%	−7.49
CGNX Cognex Corp.	Sold out	0.00%	−6.54
ADBE Adobe Inc.	Sold out	0.00%	−6.05
CLS Celestica Inc.	Sold out	0.00%	−4.28
DT Dynatrace Inc.	Sold out	0.00%	−4.05
INFA Informatica Inc. Class A	Reduce -61.1%	2.85%	−3.27
GWRE Guidewire Software Inc.	Reduce -62.6%	1.77%	−2.62
SQSP Squarespace Inc. Class A	Sold out	0.00%	−1.85
UTI Universal Technical Institut	Sold out	0.00%	−0.51
CWAN Clearwater Analytics HDS-A	Reduce -23.9%	9.06%	−0.28
TALK Talkspace Inc.	Reduce -34.1%	1.76%	+0.21
CART Maplebear Inc.	Reduce -6.0%	3.03%	+0.32
FLEX Flex Ltd.	Reduce -21.0%	6.85%	+0.39
PYPL PayPal Holdings Inc.	Reduce -3.4%	4.07%	+0.78
TSEM Tower Semiconductor Ltd.	Reduce -18.9%	9.89%	+0.94
IDCC Interdigital Inc.	Reduce -19.2%	13.07%	+2.96
MRVL Marvell Technology Inc.	Reduce -6.4%	12.73%	+5.14

Portfolio Buys Q3 2024 → Q4 2024


WIX LTD (WIX 0 08/15/25)	New	11.43%	+11.43
PEGA Pegasystems Inc.	Add +1.3%	13.15%	+4.44
BL Blackline Inc.	New	3.50%	+3.50
GPN Global Payments Inc.	New	3.14%	+3.14
CFLT Confluent Inc. Class A	New	1.77%	+1.77
NATL NCR Atleos Corp.	New	1.76%	+1.76
DOCU Docusign Inc.	New	0.16%	+0.16

Options Activity Q3 2024 → Q4 2024


SPY SS SPDR S&P 500 ETF Trust-US	put	New	150,000	$87.9M
IWM iShares Russell 2000 ETF	put	Sold out	2,400	$53.0Mbefore exit
MRVL Marvell Technology Inc.	put	New	217,300	$24.0M

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

All Filings

Quarter	Positions	13F Reported Value	Top Holdings
Q2 2026	37	$1.1B	TSEM, FLEX, AMD, IDCC, CLS
Q1 2026	28	$524.1M	TSEM, MRVL, LYV, ABNB, RMBS
Q4 2025	26	$637.5M	TSEM, PEGA, U, LYV, MRVL
Q3 2025	20	$621.2M	PEGA, TSEM, IDCC, WIX, FLEX
Q2 2025	22	$649.3M	PEGA, FLEX, TSEM, MRVL, IDCC
Q1 2025	14	$383.2M	IDCC, PEGA, TSEM, CWAN, FLEX
Q4 2024	17	$565.7M	PEGA, IDCC, MRVL, WIX LTD (WIX 0 08/15/25), TSEM
Q3 2024	18	$661.7M	IDCC, CWAN, TSEM, PEGA, MRVL
Q2 2024	21	$581.4M	TSEM, CGNX, IDCC, NVDA, WIX
Q1 2024	18	$449.1M	TSEM, WIX, CGNX, NVDA, IDCC