Filed: 5/14/2026ACC: 0001013594-26-000581
📋 What this filing means
SHANNON RIVER FUND MANAGEMENT LLC filed this quarterly 13F‑HR report disclosing 28 equity positions with a total reported market value of $524.08M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
28
Positions
$524.08M
Total AUM (reported)
8.54M
Total Shares
Allocation by class
COM$291.68M55.7%
SHS NEW$88.48M16.9%
CL A$67.43M12.9%
COM CL A$36.95M7.1%
ORD$20.37M3.9%
COM NEW$9.26M1.8%
SHS$5.92M1.1%
Portfolio Concentration
Top 3$189.20M36.1%
4–10$160.58M30.6%
11–25$161.05M30.7%
Rest$13.24M2.5%
Top 3 weight
36.1%
Top 10 weight
66.7%
Voting Authority Distribution
Total shares with voting rights: 8.54M
Sole
Full voting authority
7.48M
shares
% of voting shares87.6%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
1.06M
shares
% of voting shares12.4%
Investment Discretion (by position count)
Sole28
Shared0
Other0
Dominant voting typeSole · 87.6% of voting shares
Institutional Holdings28
Rows:
TOWER SEMICONDUCTOR LTD
SOLEShares504.24K
TypeSH
Market value$88.48M
16.88%
Sole
492.57K
Shared
0.00
None
11.67K
MARVELL TECHNOLOGY INC
SOLEShares563.57K
TypeSH
Market value$55.82M
10.65%
Sole
490.54K
Shared
0.00
None
73.04K
LIVE NATION ENTERTAINMENT IN
SOLEShares294.40K
TypeSH
Market value$44.90M
8.57%
Sole
256.52K
Shared
0.00
None
37.88K
AIRBNB INC
SOLEShares247.01K
TypeSH
Market value$31.19M
5.95%
Sole
214.85K
Shared
0.00
None
32.16K
RAMBUS INC DEL
SOLEShares333.82K
TypeSH
Market value$28.72M
5.48%
Sole
290.18K
Shared
0.00
None
43.64K
COHERENT CORP
SOLEShares87.91K
TypeSH
Market value$20.94M
4.00%
Sole
71.67K
Shared
0.00
None
16.23K
FLEXTRONICS INTL LTD
SOLEShares311.22K
TypeSH
Market value$20.37M
3.89%
Sole
269.56K
Shared
0.00
None
41.67K
AXON ENTERPRISE INC
SOLEShares47.44K
TypeSH
Market value$20.15M
3.84%
Sole
41.37K
Shared
0.00
None
6.08K
EXTREME NETWORKS
SOLEShares1.31M
TypeSH
Market value$19.80M
3.78%
Sole
1.13M
Shared
0.00
None
178.82K
TOAST INC
SOLEShares732.03K
TypeSH
Market value$19.41M
3.70%
Sole
637.11K
Shared
0.00
None
94.91K
LEGENCE CORP
SOLEShares337.64K
TypeSH
Market value$19.06M
3.64%
Sole
292.60K
Shared
0.00
None
45.04K
INTERDIGITAL INC
SOLEShares54.10K
TypeSH
Market value$16.34M
3.12%
Sole
52.19K
Shared
0.00
None
1.91K
HINGE HEALTH INC
SOLEShares417.18K
TypeSH
Market value$16.09M
3.07%
Sole
362.55K
Shared
0.00
None
54.63K
ADTRAN HOLDINGS INC
SOLEShares1.22M
TypeSH
Market value$15.35M
2.93%
Sole
1.06M
Shared
0.00
None
155.61K
CELESTICA INC
SOLEShares53.49K
TypeSH
Market value$15.07M
2.88%
Sole
43.67K
Shared
0.00
None
9.83K
F5 INC
SOLEShares50.20K
TypeSH
Market value$14.52M
2.77%
Sole
44.08K
Shared
0.00
None
6.12K
LIONSGATE STUDIOS CORP
SOLEShares1.04M
TypeSH
Market value$9.98M
1.90%
Sole
908.75K
Shared
0.00
None
132.18K
GUIDEWIRE SOFTWARE INC
SOLEShares62.86K
TypeSH
Market value$9.40M
1.79%
Sole
54.73K
Shared
0.00
None
8.13K
ENERGY FUELS INC
SOLEShares507.56K
TypeSH
Market value$9.26M
1.77%
Sole
440.44K
Shared
0.00
None
67.12K
SPHERE ENTERTAINMENT CO
SOLEShares73.34K
TypeSH
Market value$8.61M
1.64%
Sole
64.29K
Shared
0.00
None
9.05K
AMBARELLA INC
SOLEShares114.94K
TypeSH
Market value$5.92M
1.13%
Sole
100.29K
Shared
0.00
None
14.65K
APPLOVIN CORP
SOLEShares14.48K
TypeSH
Market value$5.76M
1.10%
Sole
12.62K
Shared
0.00
None
1.86K
DIGITAL RLTY TR INC
SOLEShares29.84K
TypeSH
Market value$5.38M
1.03%
Sole
26K
Shared
0.00
None
3.84K
ASTERA LABS INC
SOLEShares47.39K
TypeSH
Market value$5.19M
0.99%
Sole
41.51K
Shared
0.00
None
5.88K
OSI SYSTEMS INC
SOLEShares19.27K
TypeSH
Market value$5.12M
0.98%
Sole
16.77K
Shared
0.00
None
2.50K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
TOWER SEMICONDUCTOR LTDSOLE | SHS NEW | 504.24K | SH | $88.48M 16.88% | 492.57K | 0.00 | 11.67K |
MARVELL TECHNOLOGY INCSOLE | COM | 563.57K | SH | $55.82M 10.65% | 490.54K | 0.00 | 73.04K |
LIVE NATION ENTERTAINMENT INSOLE | COM | 294.40K | SH | $44.90M 8.57% | 256.52K | 0.00 | 37.88K |
AIRBNB INCSOLE | COM CL A | 247.01K | SH | $31.19M 5.95% | 214.85K | 0.00 | 32.16K |
RAMBUS INC DELSOLE | COM | 333.82K | SH | $28.72M 5.48% | 290.18K | 0.00 | 43.64K |
COHERENT CORPSOLE | COM | 87.91K | SH | $20.94M 4.00% | 71.67K | 0.00 | 16.23K |
FLEXTRONICS INTL LTDSOLE | ORD | 311.22K | SH | $20.37M 3.89% | 269.56K | 0.00 | 41.67K |
AXON ENTERPRISE INCSOLE | COM | 47.44K | SH | $20.15M 3.84% | 41.37K | 0.00 | 6.08K |
EXTREME NETWORKSSOLE | COM | 1.31M | SH | $19.80M 3.78% | 1.13M | 0.00 | 178.82K |
TOAST INCSOLE | CL A | 732.03K | SH | $19.41M 3.70% | 637.11K | 0.00 | 94.91K |
LEGENCE CORPSOLE | CL A | 337.64K | SH | $19.06M 3.64% | 292.60K | 0.00 | 45.04K |
INTERDIGITAL INCSOLE | COM | 54.10K | SH | $16.34M 3.12% | 52.19K | 0.00 | 1.91K |
HINGE HEALTH INCSOLE | CL A | 417.18K | SH | $16.09M 3.07% | 362.55K | 0.00 | 54.63K |
ADTRAN HOLDINGS INCSOLE | COM | 1.22M | SH | $15.35M 2.93% | 1.06M | 0.00 | 155.61K |
CELESTICA INCSOLE | COM | 53.49K | SH | $15.07M 2.88% | 43.67K | 0.00 | 9.83K |
F5 INCSOLE | COM | 50.20K | SH | $14.52M 2.77% | 44.08K | 0.00 | 6.12K |
LIONSGATE STUDIOS CORPSOLE | COM | 1.04M | SH | $9.98M 1.90% | 908.75K | 0.00 | 132.18K |
GUIDEWIRE SOFTWARE INCSOLE | COM | 62.86K | SH | $9.40M 1.79% | 54.73K | 0.00 | 8.13K |
ENERGY FUELS INCSOLE | COM NEW | 507.56K | SH | $9.26M 1.77% | 440.44K | 0.00 | 67.12K |
SPHERE ENTERTAINMENT COSOLE | CL A | 73.34K | SH | $8.61M 1.64% | 64.29K | 0.00 | 9.05K |
AMBARELLA INCSOLE | SHS | 114.94K | SH | $5.92M 1.13% | 100.29K | 0.00 | 14.65K |
APPLOVIN CORPSOLE | COM CL A | 14.48K | SH | $5.76M 1.10% | 12.62K | 0.00 | 1.86K |
DIGITAL RLTY TR INCSOLE | COM | 29.84K | SH | $5.38M 1.03% | 26K | 0.00 | 3.84K |
ASTERA LABS INCSOLE | COM | 47.39K | SH | $5.19M 0.99% | 41.51K | 0.00 | 5.88K |
OSI SYSTEMS INCSOLE | COM | 19.27K | SH | $5.12M 0.98% | 16.77K | 0.00 | 2.50K |
Page 1 of 2