Returns
| Series | 1 week | 1 month | 3 months | 6 months | YTD | 1 year | 3 years (ann.) | 5 years (ann.) | 10 years | Since inception (ann.) |
|---|---|---|---|---|---|---|---|---|---|---|
| Market-price return | -0.35% | -4.35% | -8.01% | -7.84% | +0.55% | -0.54% | +11.90% | +0.11% | — | +0.20% |
| Market-price total return | +0.17% | -3.86% | -6.65% | -5.14% | +4.99% | +5.48% | +19.83% | +7.73% | — | +7.72% |
| NAV return | -0.61% | -2.71% | -1.78% | -2.20% | +5.20% | +7.80% | +10.29% | +2.41% | — | +2.15% |
| NAV total return | -0.16% | -2.26% | -0.45% | +0.46% | +9.55% | +13.90% | +17.38% | +9.38% | — | +9.08% |
Performance through Oct 14, 2026. Price and NAV returns are simple changes; total returns reinvest each distribution at the series value on its ex-date (first observation on/after). Periods of one year or less are cumulative; longer periods are annualised. Series are built from unadjusted prices plus the distribution record so no distribution is counted twice. Corporate actions: the vendor price series is split-adjusted; rights offerings and mergers are not restated — check Corporate Actions.
Growth of $10,000, five years
Risk statistics
| Statistic | Market price | NAV | Specification |
|---|---|---|---|
| Volatility, 1 year | 0.12% | 0.07% | annualised SD of daily total returns, √252 |
| Volatility, 3 years | 0.13% | 0.08% | as above |
| Volatility, 5 years | 0.15% | 0.10% | as above |
| Maximum drawdown, 3 years | -10.98% | -7.66% | peak-to-trough on the total-return index |
| Sharpe ratio, 3 years | 1.15 | 1.57 | excess over FRED DGS3MO (window average) (avg 4.52%), annualised |
| Sortino ratio, 3 years | 1.66 | 2.26 | downside deviation of excess returns |
| Beta vs. benchmark proxy, 3 years | 0.78 | — | AOR (60/40 allocation ETF proxy), daily, aligned dates |
| Correlation, 3 years | 0.58 | — | as above |
| Observations (3y) | 751 | — | minimum 60; rankings require 500 |
Market-price and NAV volatility are different quantities and are never mixed. NAV volatility for funds holding stale-marked or illiquid assets can understate economic risk.
CEF Explorer research page for Thornburg Income Builder Opportunities Trust. Figures carry their own dates and sources; a discount to NAV does not guarantee convergence or any return. This is not investment advice.