Frontier Capital Management Co Llc
SEC-registered
Investment Adviser · Mid-sized ($1B–$10B)
CRD 106274
· SEC file 801-15724
· Boston, MA
· WWW.FRONTIERCAP.COM
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ADV data as of Mar 31, 2026
- Regulatory AUM
- $9.6B
- Discretionary
- $9.6B
- Clients
- 34
- Avg AUM / client
- $282M
- Accounts
- 55
- Employees
- 38
AUM over time
$9.0B
$14.0B
Dec 2011
Dec 2025
Annual snapshots from Form ADV filings · as of Mar 31, 2026
Investments (13F portfolio — 291 positions, $9,729,472,988)
13F period Mar 31, 2026| # | Issuer | Class | Value | Shares | % of 13F | % of AUM |
|---|---|---|---|---|---|---|
| 1 | Ftai Aviation Ltd | SHS | $260,241,381 | 1,062,210 | 2.67% | 2.71% |
| 2 | Darling Ingredients Inc | COM | $151,883,038 | 2,455,668 | 1.56% | 1.58% |
| 3 | United Therapeutics Corp Del | COM | $149,847,285 | 252,702 | 1.54% | 1.56% |
| 4 | Circle Internet Group Inc | COM CL A | $147,709,033 | 1,548,150 | 1.52% | 1.54% |
| 5 | Granite Constr Inc | COM | $142,385,805 | 1,187,736 | 1.46% | 1.48% |
| 6 | Stride Inc | COM | $136,600,969 | 1,549,291 | 1.4% | 1.42% |
| 7 | Amentum Holdings Inc | COM | $128,579,888 | 4,930,210 | 1.32% | 1.34% |
| 8 | Xpo Inc | COM | $126,860,838 | 652,073 | 1.3% | 1.32% |
| 9 | Alaska Air Group Inc | COM | $124,080,520 | 3,373,587 | 1.28% | 1.29% |
| 10 | Knight Swift Transn Hldgs In | CL A | $120,143,212 | 2,086,544 | 1.23% | 1.25% |
| 11 | Akamai Technologies Inc | COM | $119,049,909 | 1,036,569 | 1.22% | 1.24% |
| 12 | Eagle Matls Inc | COM | $115,688,414 | 610,654 | 1.19% | 1.21% |
| 13 | Ultra Clean Hldgs Inc | COM | $111,143,676 | 1,787,451 | 1.14% | 1.16% |
| 14 | Popular Inc | COM NEW | $107,460,810 | 800,930 | 1.1% | 1.12% |
| 15 | Ashland Inc | COM | $106,364,617 | 1,912,689 | 1.09% | 1.11% |
| 16 | Ati Inc | COM | $101,010,604 | 694,422 | 1.04% | 1.05% |
| 17 | Jazz Pharmaceuticals Plc | SHS USD | $97,792,587 | 517,284 | 1.01% | 1.02% |
| 18 | Tidewater Inc New | COM | $89,631,855 | 1,072,793 | 0.92% | 0.93% |
| 19 | Apogee Therapeutics Inc | COM | $89,597,516 | 1,064,483 | 0.92% | 0.93% |
| 20 | Entegris Inc | COM | $88,481,754 | 754,706 | 0.91% | 0.92% |
| 21 | Monolithic Pwr Sys Inc | COM | $87,138,539 | 79,699 | 0.9% | 0.91% |
| 22 | Kirby Corp | COM | $85,618,420 | 644,329 | 0.88% | 0.89% |
| 23 | Agree Rlty Corp | COM | $83,022,477 | 1,101,386 | 0.85% | 0.87% |
| 24 | Sanmina Corp | COM | $82,630,924 | 637,388 | 0.85% | 0.86% |
| 25 | Insmed Inc | COM PAR $.01 | $76,782,611 | 469,561 | 0.79% | 0.8% |
Top 25 of 291 positions from the manager's latest Form 13F · source filing (EDGAR) ↗. 13F covers long US-listed positions only. "% of AUM" is share of the firm's total regulatory AUM (Form ADV Item 5.F).
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Investment companies | 5 | $2.5B | 25.8% |
| Pooled investment vehicles (non-investment companies) | 7 | $706M | 7.36% |
| Pension and profit sharing plans | 9 | $1.6B | 17.1% |
| Charitable organizations | Fewer than 5 clients | $99.0M | 1.03% |
| State or municipal government entities | 13 | $3.9B | 41.0% |
| Other investment advisers | Fewer than 5 clients | $22.9M | 0.24% |
| Sovereign wealth funds and foreign official institutions | Fewer than 5 clients | $239M | 2.49% |
| Corporations and other businesses | Fewer than 5 clients | $481M | 5.01% |
Private funds (5)
Reported in Form ADV Section 7.B.(1), filing of Mar 2024 · $534M combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| Frontier Small Cap Value Fund, Lp | Other Private Fund | Delaware | $172M | 33 |
| Frontier Small Cap Growth Fund, Lp | Other Private Fund | Delaware | $124M | 20 |
| Frontier Capital Appreciation Fund, Lp | Other Private Fund | Delaware | $114M | 18 |
| Frontier Mid Cap Growth Fund, Lp | Other Private Fund | Delaware | $108M | 24 |
| Frontier Focus Fund, Lp | Other Private Fund | Delaware | $16.5M | 21 |
Retirement plan clients
Plans that reported this firm as an investment service provider on Form 5500 Schedule C.
| Plan | Location | Plan year |
|---|---|---|
| Construction Workers Pension Trust Fund Lake County And Vicinity Pension Plan Trustees Of Construction Workers Lake County Pension | 2024 | |
| Insulators Local No. 96 Pension Fund Insulators Local No. 96 Pension Fund | 2024 | |
| Ufcw Union Local No. 655, Food Employer's Joint Pe Board Of Trustees Of Ufcw Local 655, Food Employers Joint Pension Plan | 2024 | |
| Teamsters Joint Council No. 83 Of Virginia Pension Fund Teamsters Joint Council No. 83 Of Virginia Pension Fund | Richmond, VA | 2024 |
| Steelworkers Pension Trust Steelworkers Pension Trust | Pittsburgh, PA | 2024 |
| Mary Kay Inc. Profit Sharing And 401(k) Plan Mary Kay Inc. | 2024 |
People (4)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Teichner, William, Allen | Managing Partner | Sep 1992 (34y) | Less than 5% | |
| Jankowski, Sarah, Jean | Chief Operating Officer/Managing Partner | Jun 1996 (30y) | Less than 5% | |
| Berggren, Jillian, Patricia | Controller | Mar 2019 (7y) | Less than 5% | |
| Phay, Robert, E | Chief Compliance Officer And General Counsel | Aug 2019 (7y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| Fcmc Holdings Llc | Manager Member | Jan 2000 | A | 75% or more |
| Affiliated Managers Group, Inc. | Manager Member | Jun 2014 | B | ≈ 42.19% – 100% via Amg Fcmc Holdings, Llc |
| Amg Fcmc Holdings, Llc | Managing Member | Jun 2014 | B | ≈ 56.25% – 100% via Fcmc Holdings Llc |
Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.
Estimated effective ownership (look-through of filed bands):
- Affiliated Managers Group, Inc.: 75% – 100% of Amg Fcmc Holdings, Llc × 75% – 100% of Fcmc Holdings Llc × 75% – 100% direct ≈ 42.19% – 100% of the firm
- Amg Fcmc Holdings, Llc: 75% – 100% of Fcmc Holdings Llc × 75% – 100% direct ≈ 56.25% – 100% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (5, $534M gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| Frontier Small Cap Value Fund, Lp | Other Private Fund | $172M | $1.0M | 33 |
| Frontier Small Cap Growth Fund, Lp | Other Private Fund | $124M | $1.0M | 20 |
| Frontier Capital Appreciation Fund, Lp | Other Private Fund | $114M | $1.0M | 18 |
| Frontier Mid Cap Growth Fund, Lp | Other Private Fund | $108M | $1.0M | 24 |
| Frontier Focus Fund, Lp | Other Private Fund | $16.5M | $1.0M | 21 |
From Form ADV Section 7.B private fund reporting.
Retirement plans served (6)
| Plan | Sponsor | Participants | Plan assets | As of |
|---|---|---|---|---|
| Construction Workers Pension Trust Fund Lake County And Vicinity Pension Plan | Trustees Of Construction Workers Lake County Pension | 3,051 | $591M | 06/01/2024 |
| Insulators Local No. 96 Pension Fund | Insulators Local No. 96 Pension Fund | 119 | $26.2M | 01/01/2024 |
| Ufcw Union Local No. 655, Food Employer's Joint Pe | Board Of Trustees Of Ufcw Local 655, Food Employers Joint Pension Plan | 6,048 | $780M | 01/01/2024 |
| Teamsters Joint Council No. 83 Of Virginia Pension Fund | Teamsters Joint Council No. 83 Of Virginia Pension Fund | 2,815 | $1.5B | 01/01/2024 |
| Steelworkers Pension Trust | Steelworkers Pension Trust | 43,601 | $7.2B | 01/01/2024 |
| Mary Kay Inc. Profit Sharing And 401(k) Plan | Mary Kay Inc. | 1,459 | $793M | 01/01/2024 |
From Form 5500 service-provider disclosures.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 03/31/2026 | 2.13 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for individuals/small businesses
- • Portfolio management for investment companies
- • Portfolio management for pooled investment vehicles
- • Portfolio management for businesses/institutional clients
Custody
Reported custodians
- Northern Trust $2.9B (30% of AUM) Mar 2026
- BNY Mellon $1.2B (13% of AUM) Mar 2026
- State Street $648M (7% of AUM) Mar 2026
Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).
Firm reports having custody of client funds or securities (Item 9.A).
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 31, 2026.
View current Form ADV (SEC/IAPD) ↗