AdvisorCensus / Financial advisors / California / San Francisco / Lyle & Forsyth Investment Managers
Lyle & Forsyth Investment Managers
Filed as LYLE & FORSYTH INVESTMENT MANAGERS · Legal name Lyle, Allan Glen
Lyle & Forsyth Investment Managers is an SEC-registered investment advisory firm in San Rafael, CA, registered since 1982, reporting $100 million to $500 million in regulatory assets under management in its Form ADV filing dated March 3, 2026.
Quick answers
From the filingHow is Lyle & Forsyth Investment Managers compensated?
On its Form ADV (Item 5.E, October 2026), Lyle & Forsyth Investment Managers reports these compensation arrangements: a percentage of assets under its management.
Where is Lyle & Forsyth Investment Managers located?
Lyle & Forsyth Investment Managers' principal office is in San Rafael, CA, according to its Form ADV.
Is Lyle & Forsyth Investment Managers registered with the SEC or a state?
Lyle & Forsyth Investment Managers is an SEC-registered investment advisory firm, registered since 1982. Status as filed: Approved. CRD 10603.
How much does Lyle & Forsyth Investment Managers manage?
Lyle & Forsyth Investment Managers reports $221,189,432 in regulatory assets under management in its Form ADV filing dated March 3, 2026 (43% discretionary).
How have Lyle & Forsyth Investment Managers' assets and staff changed since 2021?
In the Form ADV data for Lyle & Forsyth Investment Managers: Regulatory assets under management: $179,071,137 in the October 2021 data and $221,189,432 in the October 2026 data, up 24%. Total employees: 2 in October 2021 and 2 in October 2026. Assets under management move with markets as well as with clients coming and going.
What types of clients does Lyle & Forsyth Investment Managers serve?
By number of clients on Form ADV Item 5.D: high net worth individuals (79).
Which custodians does Lyle & Forsyth Investment Managers use?
Lyle & Forsyth Investment Managers' most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Charles Schwab & Co., Inc. as a custodian holding 10% or more of its separately managed account assets.
Does Lyle & Forsyth Investment Managers report any disciplinary disclosures?
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/10603
From the Form ADV filing
Every figure below is as the firm filed it with regulators, as of October 2026.
How the firm is compensated
Item 5.E- A percentage of assets under your management
Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ
Fees and minimums
Form ADV Part 2ASee the firm's brochure (dated March 3, 2026) for its fees and any account minimum, on the SEC's IAPD site.
Regulatory assets under management
Item 5.F$221,189,432 as of October 2026, filing dated March 3, 2026.
A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means
Who the firm serves
Item 5.DA firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.
Advisory services
Item 5.G- Portfolio management for individuals and/or small businesses
Registration and firm details
Items 1, 2, 5- Legal name
- Lyle, Allan Glen
- Registration
- SEC-registered investment adviser. Status as filed: Approved.
- Registered since
- 1982 (44 years)
- Employees
- Total: 2. Performing investment advisory functions: 1.
- Wrap fee program participation
- No.
- Custodians (Schedule D, Section 5.K(3))
-
Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.
- States registered or notice-filed
-
1 state or jurisdiction
SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration
Disclosures
Item 11None Reports no disclosure items on Form ADV Item 11. View on IAPD.
Item 11 asks about criminal, regulatory, and civil events involving the firm and its advisory personnel. The detail of each yes answer is on the IAPD record. Reading a firm's disclosures
Assets and staff over time
Items 5.A, 5.F| Data period | Assets under management | Employees | Filing dated |
|---|---|---|---|
| October 2026 | $221,189,432 | 2 | March 3, 2026 |
| October 2025 | $203,489,691 | 2 | February 25, 2025 |
| October 2024 | $194,426,835 | 2 | March 13, 2024 |
| October 2023 | $185,829,598 | 2 | August 11, 2023 |
| October 2022 | $216,019,744 | 2 | March 2, 2022 |
| October 2021 | $179,071,137 | 2 | February 22, 2021 |
Regulatory assets under management: $179,071,137 in the October 2021 data and $221,189,432 in the October 2026 data, up 24%.
Total employees: 2 in October 2021 and 2 in October 2026.
As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.
Changes in the filing
Last 12 monthsNo changes to these filed facts in the last 12 months of filing data.
Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.
Websites listed on Form ADV
Item 1.INot reported.
Source: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."
Cite this page
AdvisorCensus. Lyle & Forsyth Investment Managers (CRD 10603): Form ADV filing data as of October 2026. https://advisorcensus.com/firm/lyle-and-forsyth-investment-managers-san-rafael-ca-10603