MCBGX Fees and Costs — MFS Core Bond Fund, Class R1
Data updated: 2026-09-28
The net expense ratio is 1.39%: a 0.33% management fee, a 1.00% 12b-1 fee plus 1.03% other expenses, less a 0.97% fee waiver. There are no sales loads or redemption fees. In fiscal 2026 the fund paid $944 in broker commissions, 0.0028% of average net assets, and portfolio turnover was 110%.
MCBGX Fees and Expenses
Annual operating expenses and sales charges of MCBGX. Prospectus, as of April 30, 2026.
| Annual operating expenses | |
|---|---|
| Management fee | 0.33% |
| 12b-1 fee | 1.00% |
| Other expenses | 1.03% |
| Gross expense ratio | 2.36% |
| Fee waiver | −0.97% |
| Net expense ratio | 1.39% |
| Sales charges | |
|---|---|
| Max front load | 0.00% |
| Max deferred load | 0.00% |
| Redemption fee | — |
| Expense limitation in place (N-CEN) | Yes |
| Fees waived or reduced during the year | Yes |
| Waived fees subject to recoupment | No |
MCBGX Costs Over Time
On $10,000 invested in MCBGX, assuming 5% a year before costs, total costs come to $864 over 5 years, cutting the return by 1.46% 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 |
| Fund expenses (net expense ratio 1.39%) | $146 | $454 | $783 |
| Trading costs (broker commissions) | $0 | $1 | $2 |
| Lost growth on money paid in costs | $0 | $23 | $80 |
| Total costs | $146 | $477 | $864 |
| Value after costs | $10,354 | $11,099 | $11,898 |
| Impact on return, per year | 1.46% | 1.46% | 1.46% |
MCBGX Trading Costs
Brokerage costs reported on SEC Form N-CEN for the fiscal year ending April 30, 2026.
- Explicit cost rate (commissions ÷ average net assets): 0.0028%
- Total broker commissions: $944
- Bought from dealers (principal trades, not a cost): $72.4M
- Portfolio turnover (prospectus): 110%
- Securities lending: none during the year
MCBGX Agency Brokers
Commissions paid.
| Broker | Amount | Share |
|---|---|---|
| Merrill Lynch, Pierce, Fenner & Smith Inc. | $944 | 100.00% |
MCBGX Dealer Counterparties
Securities bought directly from dealers (principal trades).
| Broker | Amount | Share |
|---|---|---|
| BofA Securities, Inc. | $16.0M | 23.82% |
| Mizuho Securities USA LLC | $14.2M | 21.03% |
| Citigroup Global Markets Inc. | $11.0M | 16.35% |
| Wells Fargo Securities, LLC | $8.3M | 12.28% |
| Morgan Stanley & Co. LLC | $8.2M | 12.18% |
| J.P. Morgan Securities LLC | $5.4M | 8.01% |
| Goldman Sachs & Co. LLC | $1.5M | 2.18% |
| Natwest Markets Securities Inc. | $1.3M | 1.90% |
| RBC Capital Markets, LLC | $801K | 1.19% |
| BNP Paribas Securities Corp. | $721K | 1.07% |
MFS Core Bond Fund Share Classes
Net expense ratio and maximum front-end load of each share class, cheapest first.
| Ticker | Class | Net expense ratio | Front load |
|---|---|---|---|
| MCBMX | Class R6 | 0.33% | none |
| MCBFX | Class I | 0.39% | none |
| MCBKX | Class R4 | 0.39% | none |
| MCBEX | Class A | 0.64% | 4.25% |
| MCBJX | Class R3 | 0.64% | none |
| MCBHX | Class R2 | 0.89% | none |
| MCBCX | Class C | 1.39% | none |
| MCBGX | Class R1 | 1.39% | 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.