Lucien Stirling & Gray Advisory Group provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, and pension consulting. Financial planning was provided to 101–250 clients last fiscal year.
Lucien Stirling & Gray Advisory Group reports 147 clients. They include 96 individual clients, 50 high-net-worth individuals and 1 pension or profit-sharing plan. Of its assets, 69.8% ($102M across 310 accounts) are managed with discretion; $44.3M across 264 accounts are not. It advised 19 clients without assets under management last fiscal year.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 65% | 24% |
| High-net-worth individuals | 34% | 74% |
| Pension and profit-sharing plans | <1% | 2% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 96 | $34.9M | 23.8% | $364K |
| High-net-worth individuals | 50 | $109M | 74.2% | $2.17M |
| Pension and profit-sharing plans | Fewer than 5 | $2.93M | 2.0% | $2.93M |
| Total | 147 | $147M | 100% | — |
- Clients
- 96
- Regulatory AUM
- $34.9M
- AUM share
- 23.8%
- Avg. per client
- $364K
- Clients
- 50
- Regulatory AUM
- $109M
- AUM share
- 74.2%
- Avg. per client
- $2.17M
- Clients
- Fewer than 5
- Regulatory AUM
- $2.93M
- AUM share
- 2.0%
- Avg. per client
- $2.93M
Total
- Clients
- 147
- Regulatory AUM
- $147M
- AUM share
- 100%
- Avg. per client
- —
- Clients outside the U.S.
- 0%
- Clients advised without assets under management last fiscal year
- 19
- Private funds advised
- 0
- Financial planning clients last fiscal year
- 101–250
Lucien Stirling & Gray Advisory Group charges 0.40%–1.50% a year for its Asset Management. The fee is billed in advance and requires an account of at least $500,000. The brochure also prices one other service, listed under fee details.
Fee details and sources
Other fees
- Consultative Services
- Consultative services apart from asset management are billed at $350.00 per hour or fraction thereof.
Thomas Twombly owns 75% or more of Lucien Stirling & Gray Advisory Group. The leadership team of Lucien Stirling & Gray Advisory Group includes President Thomas Twombly. It has 5 employees, 3 of them in advisory roles.
Staff
- 5 employees
- 3 in advisory functions
- 3 state-registered reps
- Owns 75% or more of Lucien Stirling & Gray Advisory Group Inc
Thomas Twombly
Control person · since July 2001
Lucien Stirling & Gray Advisory Group’s regulatory assets fell from $173M (January 2021) to $147M (March 2026); clients fell from 265 to 147 and employees rose from 3 to 5.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | StaffEmployees | Offices |
|---|---|---|---|---|
| Mar 2026March 2026 | $147M | 147 | 5 | 1 |
| Mar 2025March 2025 | $131M | 145 | 5 | 1 |
| Feb 2024February 2024 | $107M | 158 | 5 | 1 |
| Mar 2023March 2023 | $98.4M | 153 | 5 | 1 |
| Mar 2022March 2022 | $130M | 153 | 7 | 1 |
| Jan 2021January 2021 | $173M | 265 | 3 | 1 |
Besides its headquarters, Lucien Stirling & Gray Advisory Group has 0 offices, with 1 listed address in 1 state.
Texas · 1 listed address
- 7800 N. Mopac Expy, Suite 340, AustinHQ
Contact and registration details
- Legal name
- Lucien Stirling & Gray Advisory Group Inc
- Headquarters
- 7800 N. Mopac Expy, Suite 340, Austin, TX 78759
- Website
- lsggroup.com
- Phone
- 512-458-2517
- SEC file
- 801-79381
- Structure
- Texas corporation
- Fiscal year end
- December
Lucien Stirling & Gray Advisory Group’s named custodians for separately managed accounts are Fidelity ($99.4M, 94%) and Capital Group ($5.99M, 6%). Lucien Stirling & Gray Advisory Group has custody of $116M for 126 clients.
- FidelityFidelity Brokerage Services LLC · Smithfield, RI · $99.4M94%
- Capital GroupCapital Group, Inc. · Los Angeles, CA · $5.99M6%
At year end, Lucien Stirling & Gray Advisory Group’s separately managed accounts were mostly in funds (82%) and cash (12%).
What the accounts hold
- Stocks3%
- Exchange-traded equities2%
- Non-exchange-traded equities1%
- Funds82%
- Bonds3%
- U.S. government and agency bonds1%
- State and local bonds1%
- Investment grade corporate bonds1%
- Cash12%
How many clients does Lucien Stirling & Gray Advisory Group have?
Lucien Stirling & Gray Advisory Group has 147 clients and manages $147 million for them, as of March 2026. They include 96 individual clients, 50 high-net-worth individuals and 1 pension or profit-sharing plan.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 11 March 2026
What services does Lucien Stirling & Gray Advisory Group offer?
Lucien Stirling & Gray Advisory Group provides financial planning, portfolio management for individuals and small businesses, portfolio management for institutions, and pension consulting.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
How much does Lucien Stirling & Gray Advisory Group charge?
Lucien Stirling & Gray Advisory Group charges 0.40%–1.50% a year for its Asset Management. The fee is billed in advance and requires an account of at least $500,000.
Which custodians does Lucien Stirling & Gray Advisory Group use?
Lucien Stirling & Gray Advisory Group’s separately managed account assets are held at Fidelity Brokerage Services LLC (Smithfield, RI), with $99.4M and Capital Group, Inc. (Los Angeles, CA), with $5.99M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 11 March 2026
How many financial advisors does Lucien Stirling & Gray Advisory Group have?
Lucien Stirling & Gray Advisory Group has 3 investment adviser representatives registered with state securities authorities, out of 5 employees, and 3 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 Lucien Stirling & Gray Advisory Group invest in?
At the end of its last fiscal year, Lucien Stirling & Gray Advisory Group’s separately managed accounts held 82% registered funds (mutual funds, ETFs, BDCs), 12% cash and equivalents, 2% exchange-traded equities, 1% non-exchange-traded equities, 1% U.S. government and agency bonds, 1% state and local bonds and 1% investment grade corporate bonds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Does Lucien Stirling & Gray Advisory Group have a minimum investment?
Yes, Lucien Stirling & Gray Advisory Group’s minimum account size for its Asset Management is $500K.
Who owns Lucien Stirling & Gray Advisory Group?
Lucien Stirling & Gray Advisory Group’s direct owner is Thomas Twombly (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 11 March 2026
How does Lucien Stirling & Gray Advisory Group get paid?
Lucien Stirling & Gray Advisory Group is paid through a percentage of assets under management, hourly charges 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 Lucien Stirling & Gray Advisory Group?
Lucien Stirling & Gray Advisory Group’s main office is at 7800 N. Mopac Expy, Suite 340, Austin, TX 78759. Its phone number is 512-458-2517. Its website is lsggroup.com.
