MCBDX Fees and Costs — MassMutual Core Bond Fund, Class R5
Data updated: 2026-08-27
The net expense ratio is 0.43%: a 0.30% management fee plus 0.17% other expenses, less a 0.04% fee waiver. There are no sales loads or redemption fees. In fiscal 2025 the fund paid $41K in broker commissions, 0.0048% of average net assets, and portfolio turnover was 149%.
MCBDX Fees and Expenses
Annual operating expenses and sales charges of MCBDX. Prospectus, as of September 30, 2025.
| Annual operating expenses | |
|---|---|
| Management fee | 0.30% |
| 12b-1 fee | 0.00% |
| Other expenses | 0.17% |
| Gross expense ratio | 0.47% |
| Fee waiver | −0.04% |
| Net expense ratio | 0.43% |
| 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 |
MCBDX Costs Over Time
On $10,000 invested in MCBDX, assuming 5% a year before costs, total costs come to $275 over 5 years, cutting the return by 0.46% 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 0.43%) | $45 | $142 | $247 |
| Trading costs (broker commissions) | $1 | $2 | $3 |
| Lost growth on money paid in costs | $0 | $7 | $25 |
| Total costs | $46 | $150 | $275 |
| Value after costs | $10,454 | $11,426 | $12,488 |
| Impact on return, per year | 0.46% | 0.46% | 0.46% |
MCBDX 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): 0.0048%
- Total broker commissions: $41K
- Bought from dealers (principal trades, not a cost): $5.2B
- Portfolio turnover (prospectus): 149%
- Securities on loan, average value: $20.4M
- Net income from securities lending: $66K (0.008% of average net assets)
MCBDX Agency Brokers
Commissions paid.
| Broker | Amount | Share |
|---|---|---|
| Goldman Sachs & Co. LLC | $41K | 100.00% |
MCBDX Dealer Counterparties
Securities bought directly from dealers (principal trades).
| Broker | Amount | Share |
|---|---|---|
| Wells Fargo Securities, LLC | $968.7M | 22.23% |
| State Street Bank and Trust Company | $828.5M | 19.01% |
| Goldman Sachs & Co. LLC | $454.3M | 10.42% |
| Barclays Capital Inc. | $394.3M | 9.05% |
| J.P. Morgan Securities LLC | $388.0M | 8.90% |
| Mizuho Securities USA LLC | $361.5M | 8.30% |
| BofA Securities, Inc. | $346.4M | 7.95% |
| Intesa Sanpaolo IMI Securities Corp. | $285.1M | 6.54% |
| Morgan Stanley & Co. LLC | $168.2M | 3.86% |
| Citigroup Global Markets Inc. | $162.7M | 3.73% |
MassMutual 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 |
|---|---|---|---|
| MMCAX | C000271053 | 0.05% | none |
| MMCDX | C000271054 | 0.19% | none |
| MCZZX | Class I | 0.33% | none |
| MCBDX | Class R5 | 0.43% | none |
| MMNWX | Class Y | 0.43% | none |
| MCBYX | Service Class | 0.53% | none |
| MCBLX | Administrative Class | 0.63% | none |
| MCZRX | Class R4 | 0.78% | none |
| MMCBX | Class A | 0.83% | 4.25% |
| MCBNX | Class R3 | 1.03% | 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.