Orso Partners provides portfolio management for institutions.
Orso Partners reports 1 client. They include 1 corporate or other business client. Of its assets, 100.0% ($387M across 1 account) are managed with discretion. It advised 1 client without assets under management last fiscal year.
| Client type | Clients | Assets |
|---|---|---|
| Corporations and other businesses | 100% | 100% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Corporations and other businesses | Fewer than 5 | $387M | 100.0% | $387M |
| Total | 1 | $387M | 100% | — |
- Clients
- Fewer than 5
- Regulatory AUM
- $387M
- AUM share
- 100.0%
- Avg. per client
- $387M
Total
- Clients
- 1
- Regulatory AUM
- $387M
- AUM share
- 100%
- Avg. per client
- —
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 1
- Private funds advised
- 0
Orso Partners is paid through a percentage of assets under management and performance-based fees; its fees and minimums are set out in its brochures on the SEC website.
Nathan Koppikar owns 75% or more of Orso Partners. The leadership team of Orso Partners includes Chief Financial Officer Robert Morelli. It has 3 employees, 2 of them in advisory roles.
Leadership
- Robert MorelliChief Financial Officer / Chief Compliance Officer
- Nathan KoppikarPortfolio Manager / Limited Partner
Staff
- 3 employees
- 2 in advisory functions
- Owns 75% or more of Orso Partners, LP
Nathan Koppikar
Control person · since December 2018
Orso Partners’ regulatory assets grew from $293M (July 2021) to $387M (March 2026); clients were 1 in both filings and employees were 3 in both filings.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $387M | 1 | 3 | 1 |
| March 2025 | $374M | 1 | 3 | 1 |
| March 2024 | $387M | 1 | 3 | 1 |
| July 2023 | $410M | 1 | 3 | 1 |
| March 2022 | $349M | 1 | 3 | 1 |
| July 2021 | $293M | 1 | 3 | 1 |
Besides its headquarters, Orso Partners has 0 offices, with 1 listed address in California.
California · 1 listed address
- 395 Oyster Point, Suite 511, South San FranciscoHQ
Contact and registration details
- Legal name
- Orso Partners, LP
- Headquarters
- 395 Oyster Point, Suite 511, South San Francisco, CA 94080
- Website
- Not reported
- Phone
- 415-801-4620
- SEC file
- 801-121939
- Structure
- California limited partnership
- Fiscal year end
- December
Orso Partners uses Wells Fargo Securities ($207M, 53%) and Morgan Stanley ($181M, 47%) as custodians for its separately managed accounts. Orso Partners does not have custody of client assets.
- Morgan StanleyMorgan Stanley Smith Barney LLC · San Francisco, CA · $181M47%
- Wells Fargo SecuritiesWells Fargo Securities, LLC · Charlotte, NC · $207M53%
At year end, Orso Partners’ separately managed accounts were mostly in cash (63%) and stocks (36%).
What the accounts hold
- Stocks36%
- Cash63%
- Other1%
- Derivatives1%
How many clients does Orso Partners have?
Orso Partners has 1 client and manages $387 million for them, as of March 2026. They include 1 corporate or other business client.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 6 March 2026
What services does Orso Partners offer?
Orso Partners provides portfolio management for institutions.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
Which custodians does Orso Partners use?
Orso Partners’ separately managed account assets are held at Wells Fargo Securities, LLC (Charlotte, NC), with $207M and Morgan Stanley Smith Barney LLC (San Francisco, CA), with $181M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 6 March 2026
How many financial advisors does Orso Partners have?
Orso Partners has 0 investment adviser representatives registered with state securities authorities, out of 3 employees, and 2 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 Orso Partners invest in?
At the end of its last fiscal year, Orso Partners’ separately managed accounts held 63% cash and equivalents, 36% exchange-traded equities and 1% derivatives.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Orso Partners?
Orso Partners’ direct owner is Nathan Koppikar (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 6 March 2026
How does Orso Partners get paid?
Orso Partners is paid through a percentage of assets under management and performance-based fees. Its Form ADV lists no commissions 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 Orso Partners?
Orso Partners’ main office is at 395 Oyster Point, Suite 511, South San Francisco, CA 94080. Its phone number is 415-801-4620.