SEC-registered firm
Registration does not mean the SEC approves or recommends the firm, and it does not imply a certain level of skill or training.
MFS Institutional Advisors Inc.
Boston, MA
CRD 107144
Firm filing updated March 31, 2026 ·
- $113.6BAssets
- 13,555Clients
- 327Advisory staff
- 13,555Accounts
Fees and minimums
All fee types on the form
- Percentage of assets under managementYes
- Performance-based feesYes
- OtherYes
- Hourly chargesNo
- Fixed feesNo
- Subscription fees (for a newsletter or periodical)No
- CommissionsNo
Who the firm serves
- Individuals9,145
- High net worth individuals407
- Pension and profit sharing plans253
- Pooled vehicles124
- Charities116
- and 5 more216
See the client table
| Client type | Approximate number of clients | Assets |
|---|---|---|
| Individuals (other than high net worth) | 9,145 | $2.2 billion |
| High net worth individuals | 407 | $1.0 billion |
| Investment companies | 2 | $748.6 million |
| Pooled investment vehicles (other than investment companies and business development companies) | 124 | $46.0 billion |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 253 | $17.0 billion |
| Charitable organizations | 116 | $1.9 billion |
| State or municipal government entities (including government pension plans) | 51 | $19.7 billion |
| Insurance companies | 37 | $7.8 billion |
| Sovereign wealth funds and foreign official institutions | 12 | $14.6 billion |
| Corporations or other businesses not listed above | 114 | $606.3 million |
| Other: "SEE SCHEDULE D - MISCELLANEOUS" | 3,294 | $2.2 billion |
What the client labels mean
Here, "individuals" includes trusts, estates, and IRAs of individuals. A "high net worth individual" is a qualified client or qualified purchaser.
Services
- Portfolio management for individuals and/or small businesses
- Portfolio management for investment companies
- Portfolio management for pooled investment vehicles (other than investment companies)
See all 6 services
- Portfolio management for businesses (other than small businesses) or institutional clients
- Pension consulting services
- Selection of other advisors (including private fund managers)
- Portfolio management for individuals and/or small businesses
- Portfolio management for investment companies
- Portfolio management for pooled investment vehicles (other than investment companies)
- Portfolio management for businesses (other than small businesses) or institutional clients
- Pension consulting services
- Selection of other advisors (including private fund managers)
Assets and accounts
- Regulatory assets$113.6 billion
- Accounts13,555
- DiscretionaryAll accounts
People
- Employees1,311
- Advisory staff327
- Broker-dealer reps130
- Licensed insurance agents0
Advisors
34 advisors with a profile on Advisable
Listed A to Z by last name. Not a ranking.
Registration details
- SEC-registered investment advisor. CRD 107144, SEC file 801-46433.
- Registered with the SEC as an investment advisor (status date on record: May 6, 1994).
Is MFS Institutional Advisors Inc. a fiduciary?
Short answer: MFS Institutional Advisors Inc. is registered with the SEC as an investment advisor. Some of its people may also act in other roles, such as for a broker-dealer or as insurance agents, where different rules apply. Details below.
More detail
The SEC put it this way in 2019: 'Under federal law, an investment adviser is a fiduciary.'
Some of the firm's people may also act for a broker-dealer: 130 staff are broker-dealer representatives and the firm has a related broker-dealer. When someone acts for a broker-dealer, a different SEC standard, Regulation Best Interest, applies to their recommendations. Ask which role they are acting in.
The firm has a related insurance company or agency.
The firm's Form CRS explains its services, fees and conflicts in plain language: Form CRS.
About this data
Informational only. Advisable Finance is not an investment advisor, does not give investment advice, and does not endorse any advisor.