MSTBX Performance — Morningstar Defensive Bond Fund, Institutional Class
Data updated: 2026-09-28
MSTBX returned +0.40% year to date and +3.14% over one year to Jul 2026. Annualised returns are +5.23% over 3 years and +2.60% over 5 years. The fund trailed its Conservative Allocation category average: $100 invested three years ago grew to $117, against $127 for the category, and to $103 over one year, against $109. Volatility over the past three years was 2.16% a year. In the 12 months to Jul 2026 the fund lost a net $14.7M, and assets reached $99.13M.
MSTBX Growth of $100
What $100 invested in Morningstar Defensive Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Conservative Allocation category average over the same months.
| Period | MSTBX | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $103 | $109 |
| 3 years (Aug 2023 – Jul 2026) | $117 | $127 |
| 5 years (Aug 2021 – Jul 2026) | $114 | $121 |
| Since data start (Feb 2020 – Jul 2026) | $120 | $143 |
MSTBX Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.40% |
| 1 year | +3.14% |
| 3 years (annualised) | +5.23% |
| 5 years (annualised) | +2.60% |
MSTBX Annual Returns
Calendar-year total returns of Morningstar Defensive Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +0.40% |
| 2025 | +6.51% |
| 2024 | +4.49% |
| 2023 | +7.16% |
| 2022 | −4.74% |
| 2021 | +0.83% |
| 2020 (Feb–Dec) | +4.03% |
MSTBX 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +0.2% | +0.8% | −0.7% | +0.2% | −0.1% | −0.1% | +0.1% | — | — | — | — | — |
| 2025 | +0.7% | +1.1% | +0.3% | +0.8% | −0.1% | +0.9% | +0.1% | +1.1% | +0.4% | +0.4% | +0.5% | +0.3% |
| 2024 | +0.5% | −0.4% | +0.6% | −0.6% | +0.9% | +0.7% | +1.4% | +1.0% | +0.9% | −0.9% | +0.7% | −0.3% |
| 2023 | +1.4% | −0.6% | +1.1% | +0.5% | −0.1% | −0.1% | +0.5% | +0.5% | 0.0% | +0.2% | +1.6% | +1.9% |
| 2022 | −0.7% | −0.4% | −1.2% | −0.7% | 0.0% | −0.9% | +0.9% | −0.8% | −1.5% | −0.3% | +0.9% | −0.1% |
| 2021 | +0.2% | −0.1% | −0.2% | +0.4% | +0.2% | +0.2% | +0.4% | 0.0% | −0.2% | −0.2% | +0.2% | 0.0% |
| 2020 | — | +0.8% | −0.6% | +0.7% | +0.7% | +0.7% | +0.4% | +0.2% | +0.1% | +0.1% | +0.6% | +0.3% |
MSTBX Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 2.16%
- 3-year Sharpe ratio: 0.34 (vs 4.5% risk-free rate)
- Best month: +1.87% (Dec 2023)
- Worst month: −0.90% (Oct 2024)
MSTBX Fund Flows
Monthly money in and out of Morningstar Defensive Bond Fund, from SEC Form N-PORT.
- 12-month net flow: −$14.7M
- 12-month gross sales (incl. reinvestments): $26.6M
- Sales ÷ redemptions: 0.65×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $1.9M | $2.4M | −$481K |
| Jun 2026 | $1.6M | $2.6M | −$1.0M |
| May 2026 | $1.6M | $2.4M | −$827K |
| Apr 2026 | $1.8M | $6.5M | −$4.7M |
| Mar 2026 | $2.4M | $3.0M | −$578K |
| Feb 2026 | $1.7M | $2.9M | −$1.2M |
| Jan 2026 | $2.1M | $9.3M | −$7.2M |
| Dec 2025 | $3.1M | $2.0M | $1.1M |
| Nov 2025 | $2.2M | $2.6M | −$395K |
| Oct 2025 | $2.2M | $2.3M | −$116K |
| Sep 2025 | $4.0M | $2.6M | $1.5M |
| Aug 2025 | $2.0M | $2.7M | −$617K |
MSTBX Assets Under Management
Net assets of Morningstar Defensive Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $99.13M |
| 2026-04-30 | $102.49M |
| 2026-01-30 | $109.71M |
| 2025-10-31 | $116.22M |
| 2025-07-31 | $114.46M |
| 2025-04-30 | $112.37M |
| 2025-01-31 | $113.08M |
| 2024-10-31 | $127.66M |
| 2024-07-31 | $129.15M |
| 2024-04-30 | $129.78M |
| 2024-01-31 | $134.33M |
| 2023-10-31 | $128.59M |
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.