Diesslin Group provides financial planning, portfolio management for individuals and small businesses, portfolio management for pooled vehicles, selecting other managers, business succession planning, divorce planning, education planning, estate planning, insurance, philanthropic planning, and tax planning. Financial planning was provided to 251–500 clients last fiscal year. The firm advises 2 private funds.
Diesslin Group reports 286 clients. They include 147 high-net-worth individuals, 133 individual clients and 3 charitable organizations. Of its assets, 92.3% ($643M across 981 accounts) are managed with discretion; $53.7M across 136 accounts are not.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 47% | 8% |
| High-net-worth individuals | 51% | 86% |
| Banking or thrift institutions | <1% | <1% |
| Pooled investment vehicles | <1% | <1% |
| Charitable organizations | 1% | 6% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 133 | $53M | 7.6% | $398K |
| High-net-worth individuals | 147 | $600M | 86.2% | $4.08M |
| Banking or thrift institutions | Fewer than 5 | $2.68M | 0.4% | $1.34M |
| Pooled investment vehicles | 1 | $392K | 0.1% | $392K |
| Charitable organizations | Fewer than 5 | $39.9M | 5.7% | $13.3M |
| Total | 286 | $696M | 100% | — |
- Clients
- 133
- Regulatory AUM
- $53M
- AUM share
- 7.6%
- Avg. per client
- $398K
- Clients
- 147
- Regulatory AUM
- $600M
- AUM share
- 86.2%
- Avg. per client
- $4.08M
- Clients
- Fewer than 5
- Regulatory AUM
- $2.68M
- AUM share
- 0.4%
- Avg. per client
- $1.34M
- Clients
- 1
- Regulatory AUM
- $392K
- AUM share
- 0.1%
- Avg. per client
- $392K
- Clients
- Fewer than 5
- Regulatory AUM
- $39.9M
- AUM share
- 5.7%
- Avg. per client
- $13.3M
Total
- Clients
- 286
- Regulatory AUM
- $696M
- 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
- 2
- Financial planning clients last fiscal year
- 251–500
Diesslin Group charges 0.15%–1.00% for its Asset Management. The brochure does not state whether the rate is annual. The brochure also prices 3 other services, listed under fee details.
Fee details and sources
Other fees
- 529 account management
- Managed 529 accounts are charged 0.10% of total market value a year, billed quarterly.
- Annuity services
- Managed annuities are charged the lesser of 0.5% of market value or the fee from adding them to managed assets; non-managed annuities pay a $500 set-up fee plus an annual fee.
- Initial financial planning
- Initial financial planning and plan implementation are quoted per client after the introductory meeting.
Shawn Gray owns 50% to 75% of Diesslin Group. Norman Farr is CEO; the leadership team includes President Scott Reasor, Chief Investment Officer Mark Michel and Chief Financial Officer Shawn Gray. It has 12 employees, 6 of them in advisory roles.
Leadership
Norman FarrPresident, Chief Executive Officer, Managing Director
Scott ReasorVice President- Shawn GrayVP, Chief Financial Officer, and Director
- Olivia PartinChief Compliance Officer, Secretary
Mark MichelChief Investment Officer, Treasurer
Investment adviser representatives
6 representatives listed in the SEC register as of 9 October 2026.
Staff
- 12 employees
- 6 in advisory functions
- 5 state-registered reps
- Owns 50% to 75% of Diesslin Group, Inc.
Shawn Gray
Control person · since March 2014
- Owns 50% to 75% of Diesslin Group, Inc.
Norman Farr
Control person · since March 2014
Diesslin Group’s regulatory assets went from $727M (June 2021) to $696M (August 2026); clients fell from 312 to 286 and employees from 14 to 12.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| August 2026 | $696M | 286 | 12 | 1 |
| April 2025 | $621M | 263 | 12 | 1 |
| March 2024 | $623M | 270 | 12 | 1 |
| April 2023 | $583M | 292 | 12 | 1 |
| March 2022 | $730M | 308 | 12 | 1 |
| June 2021 | $727M | 312 | 14 | 1 |
Besides its headquarters, Diesslin Group has 0 offices, with 1 listed address in Texas.
Texas · 1 listed address
- 425 Houston Street, Suite 500, Fort WorthHQ
Contact and registration details
- Legal name
- Diesslin Group, Inc.
- Headquarters
- 425 Houston Street, Suite 500, Fort Worth, TX 76102-7411
- Website
- diesslin.com
- Phone
- 817-332-6122
- SEC file
- 801-31827
- Founded
- 1980
- Structure
- Texas other (specify)
- Fiscal year end
- December
Diesslin Group uses Charles Schwab ($580M) as custodian for its separately managed accounts. Diesslin Group has custody of client assets.
- Charles SchwabCharles Schwab & Co., Inc. · Westlake, TX · $580M100%
At year end, Diesslin Group’s separately managed accounts were mostly in funds (80%) and stocks (17%). Its reported 13F holdings for the quarter ended 30 June 2026 total $259M across 59 positions; the largest are Vanguard Index Fds (16.6%), Invesco Qqq TR (15.0%) and Berkshire Hathaway Inc. Del (13.2%).
What the accounts hold
- Stocks17%
- Exchange-traded equities16%
- Non-exchange-traded equities1%
- Funds80%
- Registered funds70%
- Pooled vehicles10%
- Bonds3%
- U.S. government and agency bonds1%
- State and local bonds1%
- Investment grade corporate bonds1%
- Cash1%
- Other1%
- Annuities1%
Reported 13F holdings
- $259M
- Reported 13F value
- 59
- Positions
- 88.5%
- In the 10 largest
- +16.7%
- Value vs. prior quarter
- Vanguard Index Fds · Value ETF16.6%
- Invesco Qqq TR · Unit Ser 115.0%
- Berkshire Hathaway Inc. Del · CL B New13.2%
- iShares TR · Rusel 2500 ETF12.4%
- Vanguard Index Fds · Mcap VL Idxvip11.9%
- Janus Detroit Str TR · Hendrson Aaa CL11.5%
- Invesco Exchange Traded FD T · S&P500 Eql Wgt3.7%
- Apple Inc.1.7%
- Walmart Inc.1.5%
- Vanguard Index Fds · Total Stk Mkt1.2%
Together, the ten largest are 88.5% of reported value.
How many clients does Diesslin Group have?
Diesslin Group has 286 clients and manages $696 million for them, as of August 2026. They include 147 high-net-worth individuals, 133 individual clients and 3 charitable organizations.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 25 August 2026
What services does Diesslin Group offer?
Diesslin Group provides financial planning, portfolio management for individuals and small businesses, portfolio management for pooled vehicles, selecting other managers, business succession planning, divorce planning, education planning, estate planning, insurance, philanthropic planning, and tax planning.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file; Part 2A brochure, Item 4
How much does Diesslin Group charge?
Diesslin Group charges 0.15%–1.00% for its Asset Management. The brochure does not state whether the rate is annual.
Source: FORM ADV PART 2A BROCHURE - 2026, filed 4 March 2026
Which custodians does Diesslin Group use?
Diesslin Group’s separately managed account assets are held at Charles Schwab & Co., Inc. (Westlake, TX), with $580M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 25 August 2026
How many financial advisors does Diesslin Group have?
Diesslin Group has 5 investment adviser representatives registered with state securities authorities, out of 12 employees, and 6 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 Diesslin Group invest in?
At the end of its last fiscal year, Diesslin Group’s separately managed accounts held 70% registered funds (mutual funds, ETFs, BDCs), 16% exchange-traded equities, 10% pooled vehicles (private funds and similar), 1% non-exchange-traded equities, 1% U.S. government and agency bonds, 1% state and local bonds, 1% investment grade corporate bonds, 1% cash and equivalents and 1% other. The 1% other category is described as: Annuities. It advises 2 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 Diesslin Group?
Diesslin Group’s direct owners are Shawn Gray (50% to 75%) and Norman Farr (50% to 75%).
Source: Form ADV Part 1A, Schedules A and B, filed 25 August 2026
How does Diesslin Group get paid?
Diesslin Group is paid through a percentage of assets under management, hourly charges, fixed fees 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
Is Diesslin Group registered with the SEC?
Yes, Diesslin Group has been registered with the SEC as an investment adviser since 28 April 1988. Its CRD number is 110557 and its SEC file number is 801-31827.
Source: Form ADV Part 1A, Item 1, filed 25 August 2026; IAPD firm record
How do I contact Diesslin Group?
Diesslin Group’s main office is at 425 Houston Street, Suite 500, Fort Worth, TX 76102-7411. Its phone number is 817-332-6122. Its website is diesslin.com.