503 Capital Partners provides portfolio management for individuals and small businesses, portfolio management for pooled vehicles, and portfolio management for institutions. The firm advises 8 private funds.
503 Capital Partners reports 13 clients. They include 8 pooled investment vehicles and 5 high-net-worth individuals. Of its assets, 100.0% ($636M across 14 accounts) are managed with discretion.
| Client type | Clients | Assets |
|---|---|---|
| High-net-worth individuals | 38% | 34% |
| Pooled investment vehicles | 62% | 62% |
| Charitable organizations | Fewer than 5 | 5% |
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 |
|---|---|---|---|---|
| High-net-worth individuals | 5 | $214M | 33.6% | $42.8M |
| Pooled investment vehicles | 8 | $393M | 61.7% | $49.1M |
| Charitable organizations | Fewer than 5 | $30.1M | 4.7% | — |
| Total | 13 | $636M | 100% | — |
- Clients
- 5
- Regulatory AUM
- $214M
- AUM share
- 33.6%
- Avg. per client
- $42.8M
- Clients
- 8
- Regulatory AUM
- $393M
- AUM share
- 61.7%
- Avg. per client
- $49.1M
- Clients
- Fewer than 5
- Regulatory AUM
- $30.1M
- AUM share
- 4.7%
- Avg. per client
- —
Total
- Clients
- 13
- Regulatory AUM
- $636M
- 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
- 8
503 Capital 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.
503 Holdco, LLC owns 75% or more of 503 Capital Partners and is in turn owned by 503 Investments, LLC (75% or more). The leadership team of 503 Capital Partners includes Chief Investment Officer David Sifford and Chief Compliance Officer Katherine Moore. It has 14 employees, 9 of them in advisory roles.
Leadership
- Katherine MooreChief Compliance Officer, Managing Partner
- Gary HensonManaging Partner
- David SiffordChief Investment Officer, Managing Partner
Staff
- 14 employees
- 9 in advisory functions
- Owns 75% or more of 503 Capital Partners, LLC
503 Holdco, LLC
Control person · since July 2024
- Owns 75% or more of 503 Holdco, LLC
503 Investments, LLC
Control person · since July 2024
503 Capital Partners’ regulatory assets grew Infinity× from $0 (May 2024) to $636M (April 2026); employees rose from 1 to 14.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| April 2026 | $636M | 13 | 14 | 1 |
| March 2025 | $399M | 11 | 13 | 1 |
| May 2024 | $0 | 0 | 1 | 1 |
Besides its headquarters, 503 Capital Partners has 0 offices, with 1 listed address in Kansas.
Kansas · 1 listed address
- 4000 W. 114th Street, Suite 260, LeawoodHQ
Contact and registration details
- Legal name
- 503 Capital Partners, LLC
- Headquarters
- 4000 W. 114th Street, Suite 260, Leawood, KS 66211
- Website
- 503capitalpartners.com
- Phone
- 913-279-0177
- @503-capital-partners
- SEC file
- 801-130277
- Structure
- Delaware LLC
- Fiscal year end
- December
503 Capital Partners uses Charles Schwab ($82.9M, 78%) and BNY Mellon, N.A. ($23.6M, 22%) as custodians for its separately managed accounts. 503 Capital Partners has custody of client assets.
- BNY Mellon, N.A.BNY Mellon, N.A. · Pittsburgh, PA · $23.6M22%
- Charles SchwabCharles Schwab & Co., Inc. · Westlake, TX · $82.9M78%
At year end, 503 Capital Partners’ separately managed accounts were mostly in bonds (93%).
What the accounts hold
- Bonds93%
- State and local bonds88%
- High-yield corporate bonds5%
- Cash7%
How many clients does 503 Capital Partners have?
503 Capital Partners has 13 clients and manages $636 million for them, as of April 2026. They include 8 pooled investment vehicles and 5 high-net-worth individuals.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 8 April 2026
What services does 503 Capital Partners offer?
503 Capital Partners provides portfolio management for individuals and small businesses, portfolio management for pooled vehicles, and portfolio management for institutions.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
Which custodians does 503 Capital Partners use?
503 Capital Partners’ separately managed account assets are held at Charles Schwab & Co., Inc. (Westlake, TX), with $82.9M and BNY Mellon, N.A. (Pittsburgh, PA), with $23.6M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 8 April 2026
How many financial advisors does 503 Capital Partners have?
503 Capital Partners has 0 investment adviser representatives registered with state securities authorities, out of 14 employees, and 9 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 503 Capital Partners invest in?
At the end of its last fiscal year, 503 Capital Partners’ separately managed accounts held 88% state and local bonds, 7% cash and equivalents and 5% high-yield corporate bonds. It advises 8 private funds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns 503 Capital Partners?
503 Capital Partners is owned through a holding company by 503 Investments, LLC. Its direct owner is 503 Holdco, LLC (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 8 April 2026
How does 503 Capital Partners get paid?
503 Capital 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 503 Capital Partners?
503 Capital Partners’ main office is at 4000 W. 114th Street, Suite 260, Leawood, KS 66211. Its phone number is 913-279-0177. Its website is 503capitalpartners.com.