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Shannon River Fund Management, LLC

New York, NYSEC-registered investment adviserCRD 161538

Filed as SHANNON RIVER FUND MANAGEMENT, LLC

Shannon River Fund Management, LLC is an SEC-registered investment advisory firm in New York, NY, registered since 2012, reporting $500 million to $1 billion in regulatory assets under management in its Form ADV filing dated July 2, 2026.

14 years
registered since 2012
$904,709,315
assets under management
3 arrangements
Percentage of assets, Performance-based and more
None
disclosure items (Item 11)

Quick answers

From the filing

How is Shannon River Fund Management, LLC compensated?

On its Form ADV (Item 5.E, October 2026), Shannon River Fund Management, LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees; other. The amounts are in Item 5 of its Form ADV Part 2A brochure.

Where is Shannon River Fund Management, LLC located?

Shannon River Fund Management, LLC's principal office is in New York, NY, according to its Form ADV; the August 2026 filing also lists 1 other office (Schedule D, Section 1.F).

Is Shannon River Fund Management, LLC registered with the SEC or a state?

Shannon River Fund Management, LLC is an SEC-registered investment advisory firm, registered since 2012. Status as filed: Approved. CRD 161538.

How much does Shannon River Fund Management, LLC manage?

Shannon River Fund Management, LLC reports $904,709,315 in regulatory assets under management in its Form ADV filing dated July 2, 2026 (100% discretionary).

How have Shannon River Fund Management, LLC's assets and staff changed since 2021?

In the Form ADV data for Shannon River Fund Management, LLC: Regulatory assets under management: $1,185,681,559 in the October 2021 data and $904,709,315 in the October 2026 data, down 24%. Total employees: 12 in October 2021 and 9 in October 2026. Assets under management move with markets as well as with clients coming and going.

What types of clients does Shannon River Fund Management, LLC serve?

By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (8).

Does Shannon River Fund Management, LLC report any disciplinary disclosures?

Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/161538

What changed in Shannon River Fund Management, LLC's recent Form ADV filings?

In the April 2026 filing data: Employees performing advisory functions went from 6 to 5.

From the Form ADV filing

Every figure below is as the firm filed it with regulators, as of October 2026.

How the firm is compensated

Item 5.E
  • A percentage of assets under your management
  • Performance-based fees
  • Other

Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ

Fees and minimums

Form ADV Part 2A

See the firm's brochure (dated July 2, 2026) for its fees and any account minimum, on the SEC's IAPD site.

Regulatory assets under management

Item 5.F
$904,709,315

$904,709,315 as of October 2026, filing dated July 2, 2026.

Discretionary: $904,709,315.Non-discretionary: $0.

A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means

Who the firm serves

Item 5.D
Pooled investment vehicles (other than investment companies and business development companies)
Clients 8 Assets $904,709,315 (100%)

A firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.

Advisory services

Item 5.G
  • Portfolio management for pooled investment vehicles (other than investment companies)

Registration and firm details

Items 1, 2, 5
Also doing business as
DOONBEG CAPITAL MANAGEMENT LLC (RELYING ADVISER), DOONBEG FUND MANAGEMENT LLC (RELYING ADVISER), DOONBEG GLOBAL MANAGEMENT LLC (RELYING ADVISER), SHANNON RIVER CAPITAL MANAGEMENT LLC (RELYING ADVISER), SHANNON RIVER GLOBAL MANAGEMENT LLC (RELYING ADVISER)
Registration
SEC-registered investment adviser. Status as filed: Approved.
Registered since
2012 (14 years)
Employees
Total: 9. Performing investment advisory functions: 5.
Wrap fee program participation
No.
Other offices (Schedule D, Section 1.F)
1 other office, as of the August 2026 filing
Kirkland, WA
States registered or notice-filed
Not reported.

SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration

Disclosures

Item 11

None Reports no disclosure items on Form ADV Item 11. View on IAPD.

Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures

Assets and staff over time

Items 5.A, 5.F
$1.19B 2021 $1.23B 2022 $643M 2023 $723M 2024 $845M 2025 $905M 2026
Data periodAssets under managementEmployeesFiling dated
October 2026$904,709,3159July 2, 2026
October 2025$844,717,8669March 28, 2025
October 2024$722,754,16711April 25, 2024
October 2023$642,986,06911May 3, 2023
October 2022$1,228,261,06312July 25, 2022
October 2021$1,185,681,55912April 27, 2021

Regulatory assets under management: $1,185,681,559 in the October 2021 data and $904,709,315 in the October 2026 data, down 24%.

Total employees: 12 in October 2021 and 9 in October 2026.

As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.

Changes in the filing

Last 12 months
  1. April 2026
    • Employees performing advisory functions went from 6 to 5.

Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.

Websites listed on Form ADV

Item 1.I

Source: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."

Cite this page

AdvisorCensus. Shannon River Fund Management, LLC (CRD 161538): Form ADV filing data as of October 2026.
https://advisorcensus.com/firm/shannon-river-fund-management-llc-new-york-ny-161538