MBOBX Performance — Madison Core Bond Fund, Class B
Data updated: 2026-09-17
MBOBX returned −47.48% over one year to Jan 2023. The annualised 3-year return is −43.76%. The fund trailed its Intermediate Core Bond category average: $100 invested three years ago grew to $18, against $94 for the category, and to $53 over one year, against $92. Volatility over the past three years was 5.78% a year. In the 12 months to Jul 2026 the fund took in a net $21.8M, and assets reached $223.27M.
MBOBX Growth of $100
What $100 invested in Madison Core Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Core Bond category average over the same months.
| Period | MBOBX | Category average |
|---|---|---|
| 1 year (Feb 2022 – Jan 2023) | $53 | $92 |
| 3 years (Feb 2020 – Jan 2023) | $18 | $94 |
| Since data start (Aug 2019 – Jan 2023) | $14 | $98 |
MBOBX Trailing Returns
Total returns to Jan 2023, from SEC N-PORT.
| Period | Total return |
|---|---|
| 1 year | −47.48% |
| 3 years (annualised) | −43.76% |
MBOBX Annual Returns
Calendar-year total returns of Madison Core Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2023 (Jan–Jan) | −1.80% |
| 2022 | −50.04% |
| 2021 | −43.83% |
| 2020 | −37.30% |
| 2019 (Aug–Dec) | −19.27% |
MBOBX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | −1.8% | — | — | — | — | — | — | — | — | — | — | — |
| 2022 | −6.6% | −5.7% | −7.0% | −8.0% | −4.3% | −6.1% | −2.1% | −7.1% | −8.5% | −5.7% | −1.4% | −4.7% |
| 2021 | −5.4% | −5.9% | −5.5% | −3.8% | −4.4% | −3.8% | −3.6% | −4.7% | −5.4% | −4.6% | −4.5% | −4.7% |
| 2020 | −2.9% | −2.9% | −5.9% | −2.1% | −3.6% | −3.5% | −2.7% | −5.2% | −4.7% | −5.0% | −3.0% | −4.1% |
| 2019 | — | — | — | — | — | — | — | −2.1% | −5.1% | −4.5% | −4.7% | −4.6% |
MBOBX Risk
Risk measures from monthly returns over Feb 2020 – Jan 2023.
- 3-year volatility (annualised): 5.78%
- 3-year Sharpe ratio: -8.35 (vs 4.5% risk-free rate)
- Best month: −1.37% (Nov 2022)
- Worst month: −8.47% (Sep 2022)
MBOBX Fund Flows
Monthly money in and out of Madison Core Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $21.8M
- 12-month gross sales (incl. reinvestments): $52.8M
- Sales ÷ redemptions: 1.70×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $2.8M | $3.8M | −$931K |
| Jun 2026 | $2.7M | $1.2M | $1.4M |
| May 2026 | $3.4M | $1.5M | $1.9M |
| Apr 2026 | $1.7M | $2.1M | −$402K |
| Mar 2026 | $1.3M | $2.9M | −$1.6M |
| Feb 2026 | $15.2M | $9.7M | $5.5M |
| Jan 2026 | $1.8M | $2.0M | −$216K |
| Dec 2025 | $3.4M | $1.5M | $1.9M |
| Nov 2025 | $3.3M | $2.2M | $1.1M |
| Oct 2025 | $1.4M | $1.7M | −$231K |
| Sep 2025 | $4.6M | $1.3M | $3.3M |
| Aug 2025 | $11.3M | $1.3M | $9.9M |
MBOBX Assets Under Management
Net assets of Madison Core Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $223.27M |
| 2026-04-30 | $225.33M |
| 2026-01-31 | $224.48M |
| 2025-10-31 | $221.91M |
| 2025-07-31 | $204.98M |
| 2025-04-30 | $201.15M |
| 2025-01-31 | $199.96M |
| 2024-10-31 | $195.79M |
| 2024-07-31 | $185.74M |
| 2024-04-30 | $174.63M |
| 2024-01-31 | $195.73M |
| 2023-10-31 | $181.30M |
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.