Guardian Investment Management provides portfolio management for individuals and small businesses and portfolio management for institutions.
Guardian Investment Management reports 53 clients. They include 43 high-net-worth individuals and 10 individual clients. Of its assets, 85.0% ($264M across 19 accounts) are managed with discretion; $46.6M across 108 accounts are not.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 19% | 1% |
| High-net-worth individuals | 81% | 79% |
| Pension and profit-sharing plans | Fewer than 5 | 6% |
| Charitable organizations | Fewer than 5 | 14% |
Client shares use reported counts. Client types without a reported count are excluded from that total.
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 10 | $4.48M | 1.4% | $448K |
| High-net-worth individuals | 43 | $246M | 79.2% | $5.72M |
| Pension and profit-sharing plans | Fewer than 5 | $18.1M | 5.8% | — |
| Charitable organizations | Fewer than 5 | $41.9M | 13.5% | — |
| Total | 53 | $310M | 100% | — |
- Clients
- 10
- Regulatory AUM
- $4.48M
- AUM share
- 1.4%
- Avg. per client
- $448K
- Clients
- 43
- Regulatory AUM
- $246M
- AUM share
- 79.2%
- Avg. per client
- $5.72M
- Clients
- Fewer than 5
- Regulatory AUM
- $18.1M
- AUM share
- 5.8%
- Avg. per client
- —
- Clients
- Fewer than 5
- Regulatory AUM
- $41.9M
- AUM share
- 13.5%
- Avg. per client
- —
Total
- Clients
- 53
- Regulatory AUM
- $310M
- 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
- 0
- Financial planning clients last fiscal year
- 0
Guardian Investment Management is paid through a percentage of assets under management and fixed fees (other than subscription fees). The reviewed brochures do not disclose an asset-based fee rate. Read the SEC-filed brochure.
Robert Tomasello owns 50% to 75% of Guardian Investment Management. The leadership team of Guardian Investment Management includes President Robert Tomasello.
Leadership
- Robert TomaselloPresident, Managing Member, CCO
- Denise DoleyPartner
Investment adviser representatives
1 representatives listed in the SEC register as of 9 October 2026.
- Denise Louise Doley
Staff
- Owns 50% to 75% of Guardian Investment Management, LLC
Robert Tomasello
Control person · since April 2013
- Owns 10% to 25% of Guardian Investment Management, LLC
Denise Doley
since January 2026
Guardian Investment Management’s regulatory assets grew from $276M (March 2021) to $310M (March 2026); clients fell from 90 to 53 and employees from 3 to 0.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $310M | 53 | 0 | 1 |
| March 2025 | $313M | 61 | 1 | 1 |
| March 2024 | $304M | 179 | 3 | 2 |
| March 2023 | $270M | 75 | 3 | 2 |
| March 2022 | $301M | 82 | 3 | 1 |
| March 2021 | $276M | 90 | 3 | 1 |
Besides its headquarters, Guardian Investment Management has 0 offices, with 1 listed address in California.
California · 1 listed address
- 1120 Mar West St., Suite D, TiburonHQ
Contact and registration details
- Legal name
- Guardian Investment Management, LLC
- Headquarters
- 1120 Mar West St., Suite D, Tiburon, CA 94920
- Website
- guardinv.com
- Phone
- 415-765-6860
- SEC file
- 801-11279
- Founded
- 1976
- Structure
- California LLC
- Fiscal year end
- December
Guardian Investment Management uses Charles Schwab ($167M, 57%), Merrill Lynch, Pierce, Fenner & Smith ($83.2M, 28%) and Morgan Stanley ($42.7M, 15%) as custodians for its separately managed accounts. Guardian Investment Management does not have custody of client assets.
- Charles SchwabCharles Schwab & Co., Inc. · San Francisco, CA · $167M57%
- Morgan StanleyMorgan Stanley Smith Barney LLC · San Francisco, CA · $42.7M15%
- Merrill Lynch, Pierce, Fenner & SmithMerrill Lynch, Pierce, Fenner & Smith Incorporated · New York, NY · $83.2M28%
At year end, Guardian Investment Management’s separately managed accounts were mostly in stocks (84%) and bonds (10%). Its reported 13F holdings for the quarter ended 30 June 2026 total $155M across 60 positions; the largest are Apple Inc. (14.7%), Danaher Corp. Del (12.6%) and Blackstone Inc. (10.3%).
What the accounts hold
- Stocks84%
- Bonds10%
- U.S. government and agency bonds9%
- State and local bonds1%
- Cash6%
- Other1%
- Derivatives1%
Reported 13F holdings
- $155M
- Reported 13F value
- 60
- Positions
- 58.3%
- In the 10 largest
- +22.3%
- Value vs. prior quarter
- Apple Inc.14.7%
- Danaher Corp. Del12.6%
- Blackstone Inc.10.3%
- Amgen Inc.3.8%
- Caterpillar Inc.3.3%
- Archer Daniels Midland CO3.3%
- Costco Wholesale Corporation2.8%
- GE Aerospace2.7%
- Quantumscape Corp. · Com CL A2.5%
- Intel Corp.2.4%
Together, the ten largest are 58.3% of reported value.
How many clients does Guardian Investment Management have?
Guardian Investment Management has 53 clients and manages $310 million for them, as of March 2026. They include 43 high-net-worth individuals and 10 individual clients.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 6 March 2026
What services does Guardian Investment Management offer?
Guardian Investment Management provides portfolio management for individuals and small businesses and portfolio management for institutions.
Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file
Which custodians does Guardian Investment Management use?
Guardian Investment Management’s separately managed account assets are held at Charles Schwab & Co., Inc. (San Francisco, CA), with $167M, Merrill Lynch, Pierce, Fenner & Smith Incorporated (New York, NY), with $83.2M and Morgan Stanley Smith Barney LLC (San Francisco, CA), with $42.7M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 6 March 2026
What does Guardian Investment Management invest in?
At the end of its last fiscal year, Guardian Investment Management’s separately managed accounts held 84% exchange-traded equities, 9% U.S. government and agency bonds, 6% cash and equivalents, 1% state and local bonds and 1% derivatives.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Guardian Investment Management?
Guardian Investment Management’s direct owners are Robert Tomasello (50% to 75%) and Denise Doley (10% to 25%).
Source: Form ADV Part 1A, Schedules A and B, filed 6 March 2026
How does Guardian Investment Management get paid?
Guardian Investment Management 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
Is Guardian Investment Management registered with the SEC?
Yes, Guardian Investment Management has been registered with the SEC as an investment adviser since 22 January 1976. Its CRD number is 104935 and its SEC file number is 801-11279.
Source: Form ADV Part 1A, Item 1, filed 6 March 2026; IAPD firm record
How do I contact Guardian Investment Management?
Guardian Investment Management’s main office is at 1120 Mar West St., Suite D, Tiburon, CA 94920. Its phone number is 415-765-6860. Its website is guardinv.com.