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FRONTIER CAPITAL MANAGEMENT CO LLC
CRD 106274File 801-15724
APPROVED
Custody
Filing as of Sep 1, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$9.60B
Top 10% of cohort (national)
Discretionary AUM
$9.60B
Clients
34
55 accounts
Employees
38
Top 25% of cohort in MA
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- BRO
- Registration date
- Jan 14, 1981
- Principal office
- 1 LIBERTY SQUARE, 10TH FLOOR, BOSTON, MA, 02109
- Phone
- (617) 261-0777
- Website
- HTTP://WWW.FRONTIERCAP.COM
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $9.60B
- Discretionary AUM
- $9.60B
- Non-discretionary AUM
- $0
- Discretionary accounts
- 55
- Non-discretionary accounts
- 0
- Total accounts
- 55
- AUM per client
- $282.3M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Other | Fewer than 5 | $480.5M |
| Non-U.S. persons | Fewer than 5 | $238.7M |
| Investment companies | 5 | $2.47B |
| Charitable organizations | Fewer than 5 | $99.0M |
| Other investment advisers | Fewer than 5 | $22.9M |
| Pooled investment vehicles | 7 | $706.0M |
| Pension and profit sharing plans | 9 | $1.64B |
| State or municipal government entities | 13 | $3.93B |
Compensation & activities
ADV Items 5E, 5GCompensation
- Performance-based fees
- A percentage of assets under your management
Advisory activities
- Portfolio management for businesses
- Portfolio management for investment companies
- Portfolio management for pooled investment vehicles
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- Yes
- Firm Custody Assets
- No
- Firm Custody Clients
- No
- Firm Custody Securities
- Yes
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- Yes
Disclosure events
ADV Item 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Apr 1, 2026 | Employees | 39 | 38 | decreased by1 |
| Apr 1, 2026 | Clients | 40 | 34 | decreased by6 |
| Apr 1, 2026 | AUM | $10,722,524,618 | $9,597,310,562 | decreased by$1,125,214,056 |
| Apr 1, 2026 | Accounts | 59 | 55 | decreased by4 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 40 | 39 | decreased by1 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 46 | 40 | decreased by6 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $12,795,761,824 | $10,722,524,618 | decreased by$2,073,237,206 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 63 | 59 | decreased by4 |
| Apr 1, 2022 | Employees | 38 | 40 | increased by2 |
| Apr 1, 2022 | Clients | 51 | 46 | decreased by5 |
| Apr 1, 2022 | AUM | $13,740,833,269 | $12,795,761,824 | decreased by$945,071,445 |
| Apr 1, 2022 | Accounts | 56 | 63 | increased by7 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “FRONTIER CAPITAL” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“FRONTIER CAPITAL” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.