Thielen Capital provides portfolio management for individuals and small businesses and pension consulting.
Thielen Capital reports 82 clients. They include 60 high-net-worth individuals and 22 individual clients. Of its assets, 100.0% ($126M across 228 accounts) are managed with discretion.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 27% | 4% |
| High-net-worth individuals | 73% | 96% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 22 | $5.25M | 4.2% | $238K |
| High-net-worth individuals | 60 | $121M | 95.8% | $2.01M |
| Total | 82 | $126M | 100% | $1.54M |
- Clients
- 22
- Regulatory AUM
- $5.25M
- AUM share
- 4.2%
- Avg. per client
- $238K
- Clients
- 60
- Regulatory AUM
- $121M
- AUM share
- 95.8%
- Avg. per client
- $2.01M
Total
- Clients
- 82
- Regulatory AUM
- $126M
- AUM share
- 100%
- Avg. per client
- $1.54M
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 0
- Private funds advised
- 0
Thielen Capital charges 0.70%–1.00% a year for its Portfolio Management Services. Each asset band is charged at its own rate. The fee is billed in advance and is negotiable. The brochure also prices one other service, listed under fee details.
| Asset band | Annual rate |
|---|---|
| $0–$1M | 1.00% |
| $1M and above | 0.70% |
Fee details and sources
Other fees
- Retirement plan consulting
- Retirement plan consulting is negotiated with the plan sponsor or named fiduciary and charged up to 0.50% of total plan assets.
Arthur Thielen owns 75% or more of Thielen Capital. The leadership team of Thielen Capital includes President Arthur Thielen. It has 1 employee.
Leadership
- Arthur ThielenPresident/Chief Compliance Officer
Investment adviser representatives
1 representatives listed in the SEC register as of 9 October 2026.
Staff
- 1 employee
- 1 in advisory functions
- 1 state-registered rep
- Owns 75% or more of Thielen Capital Corporation
Arthur Thielen
Control person · since October 2013
Thielen Capital’s regulatory assets grew from $100M (April 2025) to $126M (March 2026); clients were 82 in both filings and employees were 1 in both filings.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $126M | 82 | 1 | 1 |
| April 2025 | $100M | 79 | 1 | 1 |
Besides its headquarters, Thielen Capital has 0 offices, with 1 listed address in California.
California · 1 listed address
- 999 Corporate Drive, Suite 100, Ladera RanchHQ
Contact and registration details
- Legal name
- Thielen Capital Corporation
- Headquarters
- 999 Corporate Drive, Suite 100, Ladera Ranch, CA 92694
- Website
- thielencapital.com
- Phone
- 949-293-8345
- SEC file
- 801-132866
- Structure
- California corporation
- Fiscal year end
- December
Thielen Capital uses Charles Schwab ($99.9M, 80%) and Fidelity ($25.3M, 20%) as custodians for its separately managed accounts. Thielen Capital does not have custody of client assets.
- Charles SchwabCharles Schwab & Co., Inc. · Westlake, TX · $99.9M80%
- FidelityFidelity Brokerage Services LLC · Smithfield, RI · $25.3M20%
At year end, Thielen Capital’s separately managed accounts were mostly in funds (69%) and stocks (19%).
What the accounts hold
- Stocks19%
- Funds69%
- Bonds2%
- U.S. government and agency bonds1%
- State and local bonds1%
- Cash10%
How many clients does Thielen Capital have?
Thielen Capital has 82 clients and manages $126 million for them, as of March 2026. They include 60 high-net-worth individuals and 22 individual clients.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 24 March 2026
What services does Thielen Capital offer?
Thielen Capital provides portfolio management for individuals and small businesses and pension consulting.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How much does Thielen Capital charge?
Thielen Capital charges 0.70%–1.00% a year for its Portfolio Management Services. Each asset band is charged at its own rate. The fee is billed in advance and is negotiable.
Source: THIELEN CAPITAL CORPORATION ADV BROCHURE, filed 24 March 2026
Which custodians does Thielen Capital use?
Thielen Capital’s separately managed account assets are held at Charles Schwab & Co., Inc. (Westlake, TX), with $99.9M and Fidelity Brokerage Services LLC (Smithfield, RI), with $25.3M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 24 March 2026
How many financial advisors does Thielen Capital have?
Thielen Capital has 1 investment adviser representative registered with state securities authorities, out of 1 employees, and 1 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 Thielen Capital invest in?
At the end of its last fiscal year, Thielen Capital’s separately managed accounts held 69% registered funds (mutual funds, ETFs, BDCs), 19% exchange-traded equities, 10% cash and equivalents, 1% U.S. government and agency bonds 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 Thielen Capital?
Thielen Capital’s direct owner is Arthur Thielen (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 24 March 2026
How does Thielen Capital get paid?
Thielen Capital 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 Thielen Capital?
Thielen Capital’s main office is at 999 Corporate Drive, Suite 100, Ladera Ranch, CA 92694. Its phone number is 949-293-8345. Its website is thielencapital.com.