MBOYX Holdings — Madison Core Bond Fund
Data updated: 2026-09-17
MBOYX holds 386 securities. The top 10 make up 20.4% of net assets, led by U.S. Treasury Notes (2.66%) and U.S. Treasury Notes (2.48%). Mortgage / Securitized (43.0%) and Government Bonds (29.1%) are the largest sectors, and 96.7% of the portfolio is in United States. Debt holdings: 183 positions, 54.3% of assets.
Holdings cover 99.37% of net asset value (98.58% of total assets; remainder is cash and receivables). As of July 31, 2026 · N-PORT.
MBOYX Portfolio Holdings
386 holdings of Madison Core Bond Fund by percentage of net assets, from the fund's SEC N-PORT filing as of July 31, 2026. The 100 largest are listed below; the interactive table on this page lists all 386.
| Holding | Ticker | Sector | % of net assets | Value (USD) |
|---|---|---|---|---|
| U.S. Treasury Notes | — | Government Bonds | 2.66% | $5.94M |
| U.S. Treasury Notes | — | Government Bonds | 2.48% | $5.53M |
| U.S. Treasury Notes | — | Government Bonds | 2.43% | $5.42M |
| U.S. Treasury Notes | — | Government Bonds | 2.20% | $4.91M |
| U.S. Treasury Notes | — | Government Bonds | 1.93% | $4.32M |
| U.S. Treasury Notes | — | Government Bonds | 1.90% | $4.23M |
| U.S. Treasury Notes | — | Government Bonds | 1.76% | $3.94M |
| U.S. Treasury Notes | — | Government Bonds | 1.75% | $3.91M |
| U.S. Treasury Bonds | — | Government Bonds | 1.66% | $3.70M |
| U.S. Treasury Bonds | — | Government Bonds | 1.63% | $3.64M |
| State Street Institutional US Government Money Market Fund | — | Funds & ETFs | 1.48% | $3.30M |
| U.S. Treasury Notes | — | Government Bonds | 1.32% | $2.95M |
| Federal National Mortgage Association | — | Mortgage / Securitized | 1.27% | $2.83M |
| U.S. Treasury Bonds | — | Government Bonds | 1.16% | $2.58M |
| Federal National Mortgage Association | — | Mortgage / Securitized | 1.13% | $2.53M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 1.09% | $2.44M |
| Government National Mortgage Association REMICS | — | Mortgage / Securitized | 1.06% | $2.36M |
| Federal Home Loan Mortgage Corp. REMICS | — | Mortgage / Securitized | 0.99% | $2.21M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.96% | $2.14M |
| U.S. Treasury Bonds | — | Government Bonds | 0.94% | $2.10M |
| U.S. Treasury Bonds | — | Government Bonds | 0.93% | $2.08M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.93% | $2.08M |
| U.S. Treasury Notes | — | Government Bonds | 0.90% | $2.01M |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.89% | $1.99M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.77% | $1.71M |
| Federal Home Loan Mortgage Corp. REMICS | — | Mortgage / Securitized | 0.75% | $1.68M |
| U.S. Treasury Bonds | — | Government Bonds | 0.74% | $1.66M |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.71% | $1.59M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.70% | $1.57M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.67% | $1.51M |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.64% | $1.43M |
| Verizon Master Trust | — | Mortgage / Securitized | 0.56% | $1.26M |
| Towd Point Mortgage Trust | — | Mortgage / Securitized | 0.55% | $1.24M |
| U.S. Treasury Bonds | — | Government Bonds | 0.54% | $1.21M |
| U.S. Treasury Notes | — | Government Bonds | 0.53% | $1.19M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.53% | $1.19M |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.52% | $1.16M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.50% | $1.11M |
| Federal National Mortgage Association-ACES | — | Mortgage / Securitized | 0.48% | $1.07M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.48% | $1.07M |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.47% | $1.06M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.47% | $1.05M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.47% | $1.05M |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.43% | $956.94K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.43% | $950.45K |
| State Street Navigator Securities Lending Government Money Market Portfolio | — | Funds & ETFs | 0.41% | $918.75K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.41% | $911.35K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.40% | $902.77K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.40% | $891.13K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.39% | $868.80K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.38% | $839.30K |
| U.S. Treasury Bonds | — | Government Bonds | 0.35% | $786.91K |
| Devon Energy Corp. | — | Corporate Bonds | 0.35% | $785.43K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.34% | $770.35K |
| Space Exploration Technologies Corp. | — | Corporate Bonds | 0.33% | $728.96K |
| U.S. Treasury Bonds | — | Government Bonds | 0.32% | $725.20K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.32% | $720.09K |
| Fiserv, Inc. | — | Corporate Bonds | 0.32% | $718.90K |
| Eaton Corp. | — | Corporate Bonds | 0.32% | $717.17K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.32% | $714.99K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.32% | $712.20K |
| Government National Mortgage Association | — | Mortgage / Securitized | 0.32% | $704.74K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.31% | $702.51K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.31% | $701.42K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.31% | $700.81K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.31% | $700.13K |
| FREMF Mortgage Trust | — | Mortgage / Securitized | 0.31% | $697.70K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.31% | $693.53K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.31% | $690.21K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.31% | $687.36K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.31% | $685.27K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.30% | $680.03K |
| U.S. Treasury Bonds | — | Government Bonds | 0.30% | $676.52K |
| U.S. Treasury Bonds | — | Government Bonds | 0.30% | $671.72K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.30% | $664.17K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.30% | $662.84K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.30% | $660.05K |
| Valero Energy Corp. | — | Corporate Bonds | 0.29% | $654.36K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.29% | $647.68K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.29% | $638.31K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.28% | $628.46K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.28% | $623.95K |
| AbbVie, Inc. | — | Corporate Bonds | 0.28% | $615.66K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.27% | $613.19K |
| Truist Financial Corp. | — | Corporate Bonds | 0.27% | $611.62K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.27% | $609.99K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.27% | $608.86K |
| Wells Fargo & Co. | — | Corporate Bonds | 0.27% | $603.76K |
| Government National Mortgage Association REMICS | — | Mortgage / Securitized | 0.27% | $602.92K |
| PSMC Trust | — | Mortgage / Securitized | 0.26% | $582.51K |
| JP Morgan Mortgage Trust | — | Mortgage / Securitized | 0.26% | $578.19K |
| Mars, Inc. | — | Corporate Bonds | 0.25% | $564.65K |
| Lowe's Cos., Inc. | — | Corporate Bonds | 0.25% | $556.60K |
| Federal National Mortgage Association | — | Mortgage / Securitized | 0.25% | $554.83K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.25% | $551.37K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.25% | $549.02K |
| Diamondback Energy, Inc. | — | Corporate Bonds | 0.24% | $547.11K |
| Verizon Communications, Inc. | — | Corporate Bonds | 0.24% | $546.76K |
| Towd Point Mortgage Trust | — | Mortgage / Securitized | 0.24% | $545.16K |
| Federal Home Loan Mortgage Corp. | — | Mortgage / Securitized | 0.24% | $538.70K |
MBOYX Sector Allocation
Madison Core Bond Fund holdings grouped by sector, by share of the portfolio's market value.
| Sector | Weight | Holdings |
|---|---|---|
| Mortgage / Securitized | 43.0% | 201 |
| Government Bonds | 29.1% | 23 |
| Corporate Bonds | 26.0% | 160 |
| Funds & ETFs | 1.9% | 2 |
MBOYX Country Allocation
Where Madison Core Bond Fund's holdings are domiciled, by percentage of net assets (largest 9).
| Country | % of net assets |
|---|---|
| United States | 96.7% |
| Canada | 0.8% |
| United Kingdom | 0.5% |
| Japan | 0.5% |
| Ireland | 0.3% |
| Singapore | 0.3% |
| Switzerland | 0.2% |
| Liberia | 0.1% |
| Unknown | 0.1% |
MBOYX Portfolio Allocation
Asset-class allocation of Madison Core Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 54.7% |
| Securitized | 42.7% |
| Cash & Equivalents | 1.9% |
MBOYX Debt Constituents
Largest debt holdings of Madison Core Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 2.66% |
| United States Treasury | 2.48% |
| United States Treasury | 2.43% |
| United States Treasury | 2.20% |
| United States Treasury | 1.93% |
| United States Treasury | 1.90% |
| United States Treasury | 1.76% |
| United States Treasury | 1.75% |
| United States Treasury | 1.66% |
| United States Treasury | 1.63% |
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.