MUSBX Fees and Costs — MFS Blended Research Core Equity Fund, Class B
Data updated: 2026-08-24
The net expense ratio is 1.40%: a 0.25% management fee, a 1.00% 12b-1 fee plus 0.16% other expenses, less a 0.01% fee waiver. This share class carries a deferred sales charge of up to 4.00%. In fiscal 2025 the fund paid $117K in broker commissions, 0.0077% of average net assets, and portfolio turnover was 47%.
MUSBX Fees and Expenses
Annual operating expenses and sales charges of MUSBX. Prospectus, as of September 30, 2025.
| Annual operating expenses | |
|---|---|
| Management fee | 0.25% |
| 12b-1 fee | 1.00% |
| Other expenses | 0.16% |
| Gross expense ratio | 1.41% |
| Fee waiver | −0.01% |
| Net expense ratio | 1.40% |
| Sales charges | |
|---|---|
| Max front load | 0.00% |
| Max deferred load | 4.00% |
| Redemption fee | — |
| Expense limitation in place (N-CEN) | Yes |
| Fees waived or reduced during the year | Yes |
| Waived fees subject to recoupment | No |
MUSBX Costs Over Time
On $10,000 invested in MUSBX, assuming 5% a year before costs, total costs come to $873 over 5 years, cutting the return by 1.48% a year. Illustration, not a forecast: it assumes today's net expense ratio throughout (a fee waiver may end).
| $10,000 invested | Sell after 1 year | Sell after 3 years | Sell after 5 years |
|---|---|---|---|
| Value before costs | $10,500 | $11,576 | $12,763 |
| Sales charges | $414 | $0 | $0 |
| Fund expenses (net expense ratio 1.40%) | $147 | $457 | $789 |
| Trading costs (broker commissions) | $1 | $3 | $4 |
| Lost growth on money paid in costs | $0 | $23 | $80 |
| Total costs | $562 | $482 | $873 |
| Value after costs | $9,938 | $11,094 | $11,889 |
| Impact on return, per year | 5.62% | 1.48% | 1.48% |
MUSBX Trading Costs
Brokerage costs reported on SEC Form N-CEN for the fiscal year ending September 30, 2025.
- Explicit cost rate (commissions ÷ average net assets): 0.0077%
- Total broker commissions: $117K
- Bought from dealers (principal trades, not a cost): —
- Portfolio turnover (prospectus): 47%
- Securities lending: none during the year
MUSBX Agency Brokers
Commissions paid.
| Broker | Amount | Share |
|---|---|---|
| Jefferies LLC | $83K | 71.47% |
| Morgan Stanley & Co. LLC | $20K | 17.26% |
| National Financial Services LLC | $6K | 5.05% |
| Fidelity Brokerage Services LLC | $3K | 2.44% |
| BMO Capital Markets Corp. | $1K | 1.16% |
| J.P. Morgan Securities LLC | $876 | 0.75% |
| Virtu Americas LLC | $850 | 0.73% |
| UBS Securities LLC | $687 | 0.59% |
| Citigroup Global Markets Inc. | $324 | 0.28% |
| BofA Securities, Inc. | $310 | 0.27% |
MFS Blended Research Core Equity Fund Share Classes
Net expense ratio and maximum front-end load of each share class, cheapest first.
| Ticker | Class | Net expense ratio | Front load |
|---|---|---|---|
| MUEVX | Class R6 | 0.30% | none |
| MUEUX | Class R4 | 0.40% | none |
| MUSEX | Class I | 0.40% | none |
| MUEAX | Class A | 0.65% | 5.75% |
| MUETX | Class R3 | 0.65% | none |
| MUESX | Class R2 | 0.90% | none |
| MUECX | Class C | 1.40% | none |
| MUERX | Class R1 | 1.40% | none |
| MUSBX | Class B | 1.40% | none |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.