Hartline Investment provides portfolio management for individuals and small businesses and portfolio management for institutions.
Hartline Investment reports 266 clients. They include 158 individual clients, 90 high-net-worth individuals and 17 charitable organizations. Of its assets, 71.6% ($669M across 414 accounts) are managed with discretion; $266M across 41 accounts are not.
| Client type | Clients | Assets |
|---|---|---|
| Individuals (other than HNW) | 59% | 4% |
| High-net-worth individuals | 34% | 72% |
| Pension and profit-sharing plans | <1% | <1% |
| Charitable organizations | 6% | 24% |
Client breakdown and activity details
| Client type | Clients | Regulatory AUM | AUM share | Avg. per client |
|---|---|---|---|---|
| Individuals (other than HNW) | 158 | $35.3M | 3.8% | $223K |
| High-net-worth individuals | 90 | $672M | 71.8% | $7.47M |
| Pension and profit-sharing plans | 1 | $2.63M | 0.3% | $2.63M |
| Charitable organizations | 17 | $226M | 24.1% | $13.3M |
| Total | 266 | $935M | 100% | $3.52M |
- Clients
- 158
- Regulatory AUM
- $35.3M
- AUM share
- 3.8%
- Avg. per client
- $223K
- Clients
- 90
- Regulatory AUM
- $672M
- AUM share
- 71.8%
- Avg. per client
- $7.47M
- Clients
- 1
- Regulatory AUM
- $2.63M
- AUM share
- 0.3%
- Avg. per client
- $2.63M
- Clients
- 17
- Regulatory AUM
- $226M
- AUM share
- 24.1%
- Avg. per client
- $13.3M
Total
- Clients
- 266
- Regulatory AUM
- $935M
- AUM share
- 100%
- Avg. per client
- $3.52M
- 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
Hartline Investment charges 0.60%–1.00% a year for its Investment Supervisory Services. The fee is negotiable.
Fee details and sources
Brian Hart owns 75% or more of Hartline Investment. The leadership team of Hartline Investment includes President Brian Hart and Chief Compliance Officer Kathryn Carroll. It has 6 employees, 3 of them in advisory roles.
Leadership
- Brian HartPresident and CEO
- Kathryn CarrollChief Compliance Officer
Investment adviser representatives
3 representatives listed in the SEC register as of 9 October 2026.
Staff
- 6 employees
- 3 in advisory functions
- 3 state-registered reps
- Owns 75% or more of Hartline Investment Corp.
Brian Hart
Control person · since August 2021
Hartline Investment’s regulatory assets grew from $713M (March 2021) to $935M (March 2026); clients rose from 242 to 266 and employees were 6 in both filings.
Figures from each annual filing
| Filed | Regulatory AUM | Clients | Employees | Offices |
|---|---|---|---|---|
| March 2026 | $935M | 266 | 6 | 1 |
| March 2025 | $851M | 225 | 6 | 1 |
| March 2024 | $659M | 252 | 6 | 1 |
| March 2023 | $497M | 243 | 6 | 1 |
| March 2022 | $775M | 240 | 6 | 1 |
| March 2021 | $713M | 242 | 6 | 2 |
Besides its headquarters, Hartline Investment has 0 offices, with 1 listed address in Illinois.
Illinois · 1 listed address
- 460 Winnetka Avenue, Suite 5, WinnetkaHQ
Contact and registration details
- Legal name
- Hartline Investment Corp.
- Headquarters
- 460 Winnetka Avenue, Suite 5, Winnetka, IL 60093
- Website
- hartlineinv.com
- Phone
- 312-726-5703
- SEC file
- 801-36627
- Structure
- Illinois corporation
- Fiscal year end
- December
Hartline Investment uses Charles Schwab ($600M, 77%) and J.P. Morgan ($178M, 23%) as custodians for its separately managed accounts. Hartline Investment does not have custody of client assets.
- Charles SchwabCharles Schwab & Co., Inc. · Westlake, TX · $600M77%
- J.P. MorganJ.P. Morgan Securities LLC · New York, NY · $178M23%
At year end, Hartline Investment’s separately managed accounts were mostly in stocks (88%) and bonds (10%). Its reported 13F holdings for the quarter ended 30 June 2026 total $1.15B across 115 positions; the largest are Nvidia Corporation (10.6%), iShares Floating Rate Bond ETF (9.6%) and Berkshire Hathaway Inc. Del CL A (7.6%).
What the accounts hold
- Stocks88%
- Funds2%
- Bonds10%
- Investment grade corporate bonds9%
- U.S. government and agency bonds1%
Reported 13F holdings
- $1.15B
- Reported 13F value
- 115
- Positions
- 59.2%
- In the 10 largest
- +26.3%
- Value vs. prior quarter
- Nvidia Corporation10.6%
- iShares Floating Rate Bond ETFETF9.6%
- Berkshire Hathaway Inc. Del CL A7.6%
- Marvell Technology Inc.6.0%
- Apple Inc.5.2%
- Corning Inc.5.1%
- Vertiv Holdings CO Com CL A4.3%
- Alphabet Inc. Cap Stk CL A4.0%
- Advanced Micro Devices Inc.3.8%
- Amazon Com Inc.2.9%
Together, the ten largest are 59.2% of reported value.
How many clients does Hartline Investment have?
Hartline Investment has 266 clients and manages $935 million for them, as of March 2026. They include 158 individual clients, 90 high-net-worth individuals and 17 charitable organizations.
Source: Form ADV Part 1A, Items 5.D and 5.F, filed 30 March 2026
What services does Hartline Investment offer?
Hartline Investment 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
How much does Hartline Investment charge?
Hartline Investment charges 0.60%–1.00% a year for its Investment Supervisory Services. The fee is negotiable.
Source: ADV PART 2, filed 30 March 2026
Which custodians does Hartline Investment use?
Hartline Investment’s separately managed account assets are held at Charles Schwab & Co., Inc. (Westlake, TX), with $600M and J.P. Morgan Securities LLC (New York, NY), with $178M. Only custodians holding at least a tenth of those assets are named.
Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 30 March 2026
How many financial advisors does Hartline Investment have?
Hartline Investment has 3 investment adviser representatives registered with state securities authorities, out of 6 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 Hartline Investment invest in?
At the end of its last fiscal year, Hartline Investment’s separately managed accounts held 88% exchange-traded equities, 9% investment grade corporate bonds, 2% registered funds (mutual funds, ETFs, BDCs) and 1% U.S. government and agency bonds.
Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file
Who owns Hartline Investment?
Hartline Investment’s direct owner is Brian Hart (75% or more).
Source: Form ADV Part 1A, Schedules A and B, filed 30 March 2026
How does Hartline Investment get paid?
Hartline Investment is paid through a percentage of assets under management. 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 Hartline Investment registered with the SEC?
Yes, Hartline Investment has been registered with the SEC as an investment adviser since 18 May 1990. Its CRD number is 106923 and its SEC file number is 801-36627.
Source: Form ADV Part 1A, Item 1, filed 30 March 2026; IAPD firm record
How do I contact Hartline Investment?
Hartline Investment’s main office is at 460 Winnetka Avenue, Suite 5, Winnetka, IL 60093. Its phone number is 312-726-5703. Its website is hartlineinv.com.