Mfs Investment Management
Registered investment adviser · Boston, MA · CRD #110045
Form ADV data as of 2026-09-01Regulatory assets
$514.05 billion
Total accounts
355
Employees
1,244
Disclosure events
4
Firm details
- Website: https://www.twitter.com/followmfs
- Telephone: 617-954-5000
- SEC file number: 801-17352
- Most recent Form ADV filing: 2026-03-31
- SEC record: View this firm on the SEC's IAPD site
Disciplinary disclosures
This firm reports 4 disclosure questions answered Yes, covering 4 reported events. Form ADV Item 11 covers charges and pending proceedings as well as findings, so a Yes answer is not itself a finding of wrongdoing. The underlying detail is filed with the SEC.
- SEC or CFTC found a false statement or omission
- SEC or CFTC found a violation of its regulations or statutes
- SEC or CFTC entered an order in connection with investment-related activity
- SEC or CFTC imposed a civil money penalty or a cease-and-desist order
Assets and accounts
| Provides continuous and regular supervisory or management services | Yes |
| Discretionary regulatory assets under management | $476.82 billion |
| Non-discretionary regulatory assets under management | $37.23 billion |
| Total regulatory assets under management | $514.05 billion |
| Discretionary accounts | 311 |
| Non-discretionary accounts | 44 |
| Total accounts | 355 |
| Regulatory assets under management attributable to non-U.S. persons | $38.78 billion |
People
| Total employees (excluding clerical) | 1,244 |
| Employees performing investment advisory functions (including research) | 327 |
| Employees who are registered representatives of a broker-dealer | 65 |
| Employees registered as investment adviser representatives with a state | 0 |
| Employees registered as IARs for another investment adviser | 13 |
| Employees who are licensed insurance agents | 0 |
| Firms or persons who solicit advisory clients on the firm's behalf | 0 |
Custody
| Has custody of client cash or bank accounts | Yes |
| Has custody of client securities | Yes |
| Client funds and securities held in the firm's custody | $32.65 billion |
| Clients for whom the firm has custody | 66 |
| A related person has custody of client cash or bank accounts | Yes |
| A related person has custody of client securities | Yes |
| Client funds and securities held in a related person's custody | $3.84 billion |
| Clients for whom a related person has custody | 23 |
| The firm acts as a qualified custodian | No |
| A related person acts as a qualified custodian | No |
| Number of persons acting as qualified custodians for the firm's clients | 2 |
How the firm is compensated
Advisory services offered
Other business activities
Affiliated related persons
Reported conflicts of interest
Form ADV Items 8 asks advisers to disclose arrangements that may create a conflict with client interests. This firm answered Yes to:
- Buys or sells for itself securities it also recommends to clients
- Recommends securities in which it has another proprietary interest
- Recommends securities for which it serves as underwriter or general partner
- Receives soft dollar benefits
- Provides employee compensation specifically for obtaining clients
Client types
| Type of client | Clients | Assets |
|---|---|---|
| Investment companies | 187 | $436.50 billion |
| Pooled investment vehicles (other than investment companies and BDCs) | 115 | $70.81 billion |
| Pension and profit sharing plans (not the participants or government plans) | 18 | $3.29 billion |
| Charitable organizations | 1 | $51.1 million |
| State or municipal government entities (including government pension plans) | 2 | $704.8 million |
| Insurance companies | 2 | $86.5 million |
| Sovereign wealth funds and foreign official institutions | 4 | $2.46 billion |
| Corporations or other businesses not listed above | 26 | $142.7 million |