MDBYX
ActiveMassMutual Premier Diversified Bond Fund
Category: US Bond (5,386 funds)
Expense Ratio
0.79%
Annual Cost per $10K
$79.00
30-Year Fee Drag per $10K
$15,174
at 7% annual return
Fund Type
Mutual Fund
Active
Trailing 12-Month
+6.97%
Asset Allocation
US Bond
75%Intl Bond
20%Cash
5%Fee Comparison
MDBYX
0.79%US Bond average
0.76%US Bond cheapest
0.00%Index benchmark
0.03%4% more expensive than category average
Historical Returns
Monthly total returns (dividends reinvested) from SEC N-PORT filings · As of December 2025 · Updated quarterly
+21.83%3Y
Compare to
Fee Impact Calculator
$
%
MDBYX at 0.79%$304,742
At index rates (0.03%)$377,424
Zero fees (theoretical)$380,613
Total fee drag$75,871
Cost vs index fund−$72,682
Similar Funds (100)
Ranked by allocation similarity weighted by fund size · Returns (dividends reinvested) from SEC N-PORT filings · As of December 2025
| Ticker | Name | ER |
|---|---|---|
| MDBYX | MassMutual Premier Diversified Bond Fund | 0.79% |
| PIINX | PIMCO Income Fund | 1.08% |
| PTRAX | PIMCO Total Return Fund | 0.76% |
| STYAX | Allspring Core Plus Bond Fund | 0.67% |
| LDLVX | Lord Abbett Short Duration Income Fund | 0.32% |
| BCOSX | Baird Core Plus Bond Fund | 0.55% |
| BSBSX | Baird Short-Term Bond Fund | 0.55% |
| VWEAX | VANGUARD HIGH-YIELD CORPORATE FUND | 0.22% |
| VFSTX | VANGUARD SHORT-TERM INVESTMENT-GRADE FUND | 0.07% |
| CMBKX | American Funds Multi-Sector Income Fund | 0.70% |
| JDYRX | PGIM High Yield Fund | 0.74% |
| APDFX | Artisan High Income Fund | 0.80% |
| DTBRX | PGIM Total Return Bond Fund | 0.75% |
| PHYAX | PIMCO High Yield Fund | 0.85% |
| JSDUX | JPMorgan Short Duration Bond Fund | 0.28% |
| NERNX | Loomis Sayles Core Plus Bond Fund | 0.39% |
| WAPSX | Western Asset Core Plus Bond Fund | 0.42% |
| ACPSX | Invesco Core Plus Bond Fund | 0.79% |
| MRBBX | MFS Total Return Bond Fund | 0.60% |
| VPVTRDV | PIMCO Total Return Portfolio | 0.79% |
| VFICX | VANGUARD INTERMEDIATE-TERM INVESTMENT-GRADE FUND | 0.20% |
| HYSAX | PGIM Short Duration High Yield Income Fund | 1.00% |
| BAGSX | Baird Aggregate Bond Fund | 0.55% |
| FIHAX | Federated Hermes Institutional High Yield Bond Fund | 0.75% |
| ABNDX | Bond Fund of America | 1.04% |
| VCOBX | VANGUARD CORE BOND FUND | 0.10% |
| CCHIX | High Yield Fund | 0.51% |
| FBKWX | Fidelity Total Bond Fund | 0.75% |
| PGCAX | PIMCO Investment Grade Credit Bond Fund | 1.34% |
| FZOLX | Fidelity SAI Low Duration Bond Fund | 0.20% |
| LSBNX | Loomis Sayles Bond Fund | 0.60% |
| VCSH | VANGUARD SHORT-TERM CORPORATE BOND INDEX FUND | 0.06% |
| BUBSX | Baird Ultra Short Bond Fund | 0.40% |
| VUBFX | VANGUARD ULTRA-SHORT-TERM BOND FUND | 0.20% |
| DOXIX | Dodge & Cox Income Fund | 0.33% |
| LGBNX | Loomis Sayles Investment Grade Bond Fund | 0.44% |
| GIBRX | Guggenheim Total Return Bond Fund | 0.49% |
| EIBRX | Eaton Vance Income Fund of Boston | 0.66% |
| MINT | PIMCO Enhanced Short Maturity Active Exchange-Traded Fund | 0.36% |
| TRZOX | T. Rowe Price Short-Term Bond Fund, Inc. | 0.31% |
| LFROX | Lord Abbett Floating Rate Fund | 0.54% |
| FHRRX | Franklin High Income Fund | 0.50% |
| LQD | iShares iBoxx $ Investment Grade Corporate Bond ETF | 0.14% |
| TSBBX | Nuveen Core Impact Bond Fund | 0.51% |
| HIGFX | American High Income Trust | 0.32% |
| USIG | iShares Broad USD Investment Grade Corporate Bond ETF | 0.04% |
| SSTHX | Allspring Short-Term High Income Fund | 0.82% |
| TSRSX | Thornburg Strategic Income Fund | 0.53% |
| NRSIX | Neuberger Berman Strategic Income Fund | 0.51% |
| NHFIX | High Yield Fixed Income Fund | 0.61% |
| JSDCX | JPMorgan Short Duration Core Plus Fund | 0.39% |
| PBFKX | Victory Pioneer Bond Fund | 0.36% |
| BGHAX | BrandywineGLOBAL - HIGH YIELD FUND | 0.89% |
| IIBPX | VOYA INTERMEDIATE BOND PORTFOLIO | 0.79% |
| TAAQX | Transamerica Short-Term Bond | 0.42% |
| IGSB | iShares 1-5 Year Investment Grade Corporate Bond ETF | 0.04% |
| FDIAX | Fidelity Advisor Limited Term Bond Fund | 0.60% |
| LAUVX | Lord Abbett Income Fund | 0.45% |
| VCIT | VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND | 0.06% |
| PLSTX | Aristotle Strategic Income Fund | 0.94% |
| FSMTX | Fidelity SAI Total Bond Fund | 0.29% |
| MAFRX | Victory Pioneer Multi-Asset Ultrashort Income Fund | 0.58% |
| FCBAX | Fidelity Corporate Bond Fund | 0.77% |
| IIBAX | VOYA INTERMEDIATE BOND FUND | 1.43% |
| BIMSX | Baird Intermediate Bond Fund | 0.55% |
| PSTQX | PGIM Short-Term Corporate Bond Fund | 0.38% |
| MHYSX | NYLI MacKay High Yield Corporate Bond Fund | 0.56% |
| SPSB | SPDR Portfolio Short Term Corporate Bond ETF | 0.04% |
| CRSAX | Credit Suisse Commodity Return Strategy Fund | 0.80% |
| ERHIX | Eaton Vance High Income Opportunities Fund | 0.55% |
| MXLMX | Empower Multi-Sector Bond Fund | 0.90% |
| IGIB | iShares 5-10 Year Investment Grade Corporate Bond ETF | 0.04% |
| GGMPX | Goldman Sachs High Yield Fund | 0.98% |
| ANBAX | American Funds Strategic Bond Fund | 0.31% |
| LDUR | PIMCO Enhanced Low Duration Active Exchange-Traded Fund | 0.54% |
| AFRFX | Invesco Floating Rate ESG Fund | 0.72% |
| FTSM | First Trust Enhanced Short Maturity ETF | 0.25% |
| JNK | SPDR(R) Bloomberg High Yield Bond ETF | 0.40% |
| MFIWX | MFS Income Fund | 0.40% |
| LBNOX | LORD ABBETT BOND DEBENTURE FUND INC | 0.62% |
| TIHPX | Nuveen High Yield Fund | 0.50% |
| LHYOX | Lord Abbett High Yield Fund | 0.63% |
| IUSB | iShares Core Universal USD Bond ETF | 0.06% |
| MHIKX | MFS High Income Fund | 0.52% |
| ISTBX | Invesco Short Term Bond Fund | 0.47% |
| IBDR | iShares iBonds Dec 2026 Term Corporate ETF | 0.10% |
| FGKNX | Franklin Core Plus Bond Fund | 0.72% |
| THLIX | THRIVENT SHORT-TERM BOND FUND | 0.43% |
| VUSB | VANGUARD ULTRA-SHORT BOND ETF | 0.10% |
| JCPPX | JPMorgan Core Plus Bond Fund | 1.14% |
| TAHBX | Transamerica High Yield Bond | 0.61% |
| USHY | iShares Broad USD High Yield Corporate Bond ETF | 0.15% |
| HYG | iShares iBoxx $ High Yield Corporate Bond ETF | 0.49% |
| STABX | Victory Pioneer Short Term Income Fund | 0.73% |
| SSTVX | Allspring Short-Term Bond Plus Fund | 0.62% |
| LUBOX | Lord Abbett Ultra Short Bond Fund | 0.24% |
| JMTNX | Janus Henderson Multi-Sector Income Fund | 0.88% |
| RHYAX | RBC BlueBay High Yield Bond Fund | 0.49% |
| GIKRX | Guggenheim Limited Duration Fund | 0.46% |
| FLRRX | Franklin Low Duration Total Return Fund | 0.31% |
| LSYAX | Lord Abbett Short Duration High Yield Fund | 1.05% |
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