SEC-registered independent wealth management RIA
Diesslin Group, Inc.
As of its Form ADV filed August 25, 2026, Diesslin Group, Inc., an SEC-registered independent wealth management RIA in Fort Worth, Texas, reported $696.3 million in regulatory assets under management across 1,117 accounts, ranking #129 among independent RIAs in Texas by assets.
Registration
- Main office
- Fort Worth, TX
- Registration
- SEC-registered, Approved
- CRD number
- 110557
- SEC file number
- 801-31827
- Registered since
- April 28, 1988
- Latest Form ADV filing
- August 25, 2026
- Organized as
- Other (specify)
- Fiscal year ends
- December
- Other offices
- 0
Key figures
- Regulatory assets under management
- $696.3 million
- Discretionary
- $642.6 million (92.3%)
- Non-discretionary
- $53.7 million
- Accounts
- 1,117 (981 discretionary)
- Clients
- 286, approximate as reported
- Employees
- 12
- Advisory staff
- 6 performing investment advisory functions
- Average account
- $623,382
- Asset growth, 1 year
- 12.1% (from $621.3 million a year earlier)
- Asset growth, 3-year annual rate
- 6.1% (from $583.4 million three years earlier)
- Asset growth, 5-year annual rate
- -0.9% (from $726.9 million five years earlier)
- Client growth, 1 year
- 8.7% (from 263)
Independent wealth management RIA: individual and high net worth clients hold at least half of its regulatory assets, it offers financial planning or portfolio management for individuals, and it is not a broker-dealer, a bank or part of one by the directory's rules. How firms are classed.
Growth rates come from the SEC's yearly snapshots and are left blank when the years are not comparable.
Rankings
Among independent wealth management RIAs.
| Ranking | Nationally | In Texas | Value |
|---|---|---|---|
| Largest independent RIAs by assets under management | #1,867 | #129 | $696.3 million |
| Fastest-growing independent RIAs over one year | #4,565 | #333 | 12.1%from $621.3 million |
| Fastest-growing independent RIAs over three years | #4,855 | #346 | 6.1%from $583.4 million |
| Fastest-growing independent RIAs over five years | #4,454 | #315 | -0.9%from $726.9 million |
| Independent RIAs with the biggest asset gains over one year | #2,593 | #184 | $75.0 million |
| Independent RIAs with the most clients | #4,056 | #260 | 286 |
| Independent RIAs with the fastest client growth over one year | #1,754 | #127 | 8.7%from 263 |
| Independent RIAs with the most accounts | #2,301 | #141 | 1,117 |
| Independent RIAs with the most advisory staff | #2,105 | #160 | 6 |
| Independent RIAs with the most high net worth clients | #2,133 | #138 | 147 |
| Independent RIAs with the most CFP professionals | #1,937 | #144 | 2 |
Assets over time
Data table
| As of | RAUM |
|---|---|
| October 1, 2010 | $505.2 million |
| October 3, 2011 | $548.0 million |
| October 1, 2012 | $602.0 million |
| October 1, 2013 | $646.0 million |
| October 1, 2014 | $723.0 million |
| October 1, 2015 | $760.0 million |
| October 3, 2016 | $742.0 million |
| October 2, 2017 | $782.5 million |
| October 1, 2018 | $585.4 million |
| October 1, 2019 | $799.8 million |
| October 1, 2020 | $805.0 million |
| October 4, 2021 | $726.9 million |
| October 3, 2022 | $730.2 million |
| October 5, 2023 | $583.4 million |
| October 1, 2024 | $623.0 million |
| September 2, 2025 | $621.3 million |
| October 2, 2026 | $696.3 million |
Clients and services
Client mix
| Measure | Bar | RAUM |
|---|---|---|
| High net worth individuals 147 clients | $600.4 million | |
| Individuals (other than high net worth) 133 clients | $53.0 million | |
| Charitable organizations fewer than 5 clients | $39.9 million | |
| Banking or thrift institutions fewer than 5 clients | $2.7 million | |
| Pooled investment vehicles 1 client | $391,805 |
How the firm is paid
- A percentage of assets under management
- Hourly charges
- Fixed fees
- Performance-based fees
Advisory services
- Financial planning
- Portfolio management for individuals or small businesses
- Portfolio management for pooled investment vehicles
- Selection of other advisers
- Other
Financial planning clients (Item 5.H): 251-500.
Wrap fee program sponsor or portfolio manager: no.
Other business, affiliations and custody
Other business activities (Item 6.A)
None reported.
Financial industry affiliations (Item 7.A)
- Sponsor, general partner or managing member of pooled investment vehicles
Advises 2 private funds (Item 7.B).
Custody (Item 9)
The firm reported no custody of client cash or securities.
Investment adviser representatives
- IARs registered with the firm
- 6
- Also registered through a broker-dealer
- 0
- Employees who are IARs (Form ADV 5.B(3))
- 5
Designations held by the firm's IARs: CFP 2, CFA 1.
0 of the firm's 6 IARs are registered in jurisdictions that require IAR CE. IAR CE requirements by state.
Counts only. AdvisorIQ does not list individual people.
Disclosures
On Form ADV Item 11 the firm answered yes to 0 disclosure questions. See the detail on IAPD.
Succession and acquired firms
On Form ADV Item 4 the firm did not report succeeding to another adviser's business.
Similar-sized firms in Texas
| Firm | City | RAUM |
|---|---|---|
| Manske Wealth Management, LLC | Houston | $707.3 million |
| E & G Advisors, LLC Successor: Reported on Form ADV Item 4 that it succeeded to the business of another registered investment adviser. Some of its growth may come from that acquisition, and it is shown as reported. | Houston | $706.9 million |
| Lauterbach Financial Advisors, LLC | El Paso | $700.3 million |
| Precedent Wealth Partners, LLC | Houston | $685.0 million |
| Dash Investments | Plano | $681.6 million |
The five independent RIAs nearest in regulatory assets with a main office in the same state.
Elsewhere
- Diesslin Group, Inc. on IAPD: Form ADV, brochures and disclosure detail.
- Firm website: www.diesslin.com
- Independent RIAs in Texas
Firm data as of October 2, 2026, from ia100226.zip. Figures are as the firm reported them; corrections are made on Form ADV and appear after the next monthly reload.
Data as of October 2, 2026, from Form ADV. Sources: SEC registered adviser data (ia100226.zip) and IAPD compilation reports. How the directory is built.