Siharum Advisors provides portfolio management for individuals and small businesses, portfolio management for institutions, and selecting other managers.
Siharum Advisors reports 101 clients. They include 83 high-net-worth individuals, 11 corporations and other businesses, and 7 individual clients. Of its assets, 76.3% ($524M across 299 accounts) are managed with discretion; $163M across 54 accounts are not.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 7% | <1% |
| High-net-worth individuals | 82% | 88% |
| Pension and profit-sharing plans | Fewer than 5 | 2% |
| Corporations and other businesses | 11% | 10% |
Client shares use reported counts. Client types without a reported count are excluded from that total.
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 7 | $4.42M | 0.6% | $631K |
| High-net-worth individuals | 83 | $603M | 87.7% | $7.26M |
| Pension and profit-sharing plans | Fewer than 5 | $11.8M | 1.7% | — |
| Corporations and other businesses | 11 | $68.4M | 10.0% | $6.22M |
| Total | 101 | $687M | 100% | — |
- Clients
- 7
- Regulatory AUM
- $4.42M
- AUM share
- 0.6%
- Avg. per client
- $631K
- Clients
- 83
- Regulatory AUM
- $603M
- AUM share
- 87.7%
- Avg. per client
- $7.26M
- Clients
- Fewer than 5
- Regulatory AUM
- $11.8M
- AUM share
- 1.7%
- Avg. per client
- —
- Clients
- 11
- Regulatory AUM
- $68.4M
- AUM share
- 10.0%
- Avg. per client
- $6.22M
Total
- Clients
- 101
- Regulatory AUM
- $687M
- AUM share
- 100%
- Avg. per client
- —
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 0
Siharum Advisors charges 0.50%–1.00% a year for its Discretionary Investment Management. Each asset band is charged at its own rate. The fee is billed in arrears and is negotiable. The brochure also prices 2 other services, listed under fee details.
| Asset band | Annual rate |
|---|---|
| $0–$5M | 1.00% |
| $5M–$10M | 0.90% |
| $10M–$20M | 0.75% |
| $20M and above | 0.50% |
Fee details and sources
Other fees
- Investment Consulting
- Standard schedule of 0.50% on the first $25 million, 0.40% on the next $25 million and 0.30% on the next $50 million, billed quarterly in advance and negotiable.
- Trustee Services
- Where Siharum or a principal acts as trustee, fees are negotiated case by case.
Balamurugan Cumaresan owns 50% to 75% of Siharum Advisors. Balamurugan Cumaresan is CEO; the leadership team includes Chief Compliance Officer Balamurugan Cumaresan. It has 9 employees, 3 of them in advisory roles.
Leadership
- Balamurugan CumaresanBoard Member, President, Chief Executive Officer
- Balamurugan CumaresanChief Compliance Officer
- Edward GoldfarbNon-Executive Member
- Vaithehi MuttulingamBoard Member, Treasurer, Secretary
- Nainoor ThakoreNon-Executive Member
- Vasanti ThakoreBoard Member
- Paul MatherwiezBoard Member
Investment adviser representatives
2 representatives listed in the SEC register as of 9 October 2026.
- Balamurugan Cumaresan
- Paul Robert Matherwiez
Staff
- 9 employees
- 3 in advisory functions
- 2 state-registered reps
- Owns 50% to 75% of Siharum Advisors, LLC
Balamurugan Cumaresan
Control person · since August 2008
- Owns 10% to 25% of Siharum Advisors, LLC
Nainoor Thakore
since August 2008
- Owns 5% to 10% of Siharum Advisors, LLC
Paul Matherwiez
Control person · since January 2014
Siharum Advisors’ regulatory assets went from $721M (March 2021) to $687M (March 2026); clients were 101 in both filings and employees were 9 in both filings.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $687M | 101 | 9 | 1 |
| March 2025 | $590M | 98 | 10 | 1 |
| March 2024 | $561M | 98 | 9 | 1 |
| March 2023 | $490M | 102 | 8 | 1 |
| March 2022 | $543M | 96 | 7 | 1 |
| March 2021 | $721M | 99 | 9 | 1 |
Besides its headquarters, Siharum Advisors has 0 offices, with 1 listed address in Massachusetts.
Massachusetts · 1 listed address
- 10 High Street, Suite 302, BostonHQ
Contact and registration details
- Legal name
- Siharum Advisors, LLC
- Headquarters
- 10 High Street, Suite 302, Boston, MA 02110
- Website
- siharum.com
- Phone
- 617-428-7500
- @siharum-advisors-llc
- SEC file
- 801-69495
- Structure
- Delaware LLC
- Fiscal year end
- December
Siharum Advisors uses Fidelity ($291M, 43%), Fiduciary Trust ($237M, 35%) and Charles Schwab ($81.4M, 12%), among others, as custodians for its separately managed accounts. Siharum Advisors has custody of $5.15M in client assets for 1 client.
- FidelityFidelity Brokerage Services LLC · Wilmington, DE · $291M43%
- Charles SchwabCharles Schwab & Co., Inc. · San Francisco, CA · $81.4M12%
- Fiduciary TrustFiduciary Trust Company · Boston, MA · $237M35%
- Fiduciary Trust InternationalFiduciary Trust International · New York, NY · $63.3M9%
At year end, Siharum Advisors’ separately managed accounts were mostly in funds (91%).
What the accounts hold
- Stocks6%
- Funds91%
- Registered funds89%
- Pooled vehicles2%
- Bonds1%
- Cash2%
How many clients does Siharum Advisors have?
Siharum Advisors has 101 clients and manages $687 million for them, as of March 2026. They include 83 high-net-worth individuals, 11 corporations and other businesses, and 7 individual clients.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 9 March 2026
What services does Siharum Advisors offer?
Siharum Advisors provides portfolio management for individuals and small businesses, portfolio management for institutions, and selecting other managers.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How much does Siharum Advisors charge?
Siharum Advisors charges 0.50%–1.00% a year for its Discretionary Investment Management. Each asset band is charged at its own rate. The fee is billed in arrears and is negotiable.
Which custodians does Siharum Advisors use?
Siharum Advisors’ separately managed account assets are held at Fidelity Brokerage Services LLC (Wilmington, DE), with $291M, Fiduciary Trust Company (Boston, MA), with $237M, Charles Schwab & Co., Inc. (San Francisco, CA), with $81.4M and Fiduciary Trust International (New York, NY), with $63.3M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 9 March 2026
How many financial advisors does Siharum Advisors have?
Siharum Advisors has 2 investment adviser representatives registered with state securities authorities, out of 9 employees, and 3 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.
Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file
What does Siharum Advisors invest in?
At the end of its last fiscal year, Siharum Advisors’ separately managed accounts held 89% registered funds (mutual funds, ETFs, BDCs), 6% exchange-traded equities, 2% pooled vehicles (private funds and similar), 2% cash and equivalents and 1% state and local bonds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Siharum Advisors?
Siharum Advisors’ direct owners are Balamurugan Cumaresan (50% to 75%), Nainoor Thakore (10% to 25%) and Paul Matherwiez (5% to 10%).
Source: Form ADV Part 1A, Schedules A and B, filed 9 March 2026
How does Siharum Advisors get paid?
Siharum Advisors is paid through a percentage of assets under management and fixed fees. Its Form ADV lists no commissions or performance-based fees among how it is paid.
Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file
How do I contact Siharum Advisors?
Siharum Advisors’ main office is at 10 High Street, Suite 302, Boston, MA 02110. Its phone number is 617-428-7500. Its website is siharum.com.