Returns
| Series | 1 week | 1 month | 3 months | 6 months | YTD | 1 year | 3 years (ann.) | 5 years (ann.) | 10 years (ann.) | Since inception (ann.) |
|---|---|---|---|---|---|---|---|---|---|---|
| Market-price return | -3.08% | -6.90% | -13.91% | -3.16% | +8.11% | +1.80% | +2.44% | -6.03% | +1.15% | -2.71% |
| Market-price total return | -2.27% | -6.12% | -11.88% | +1.35% | +15.98% | +13.10% | +13.41% | +3.85% | +11.40% | +7.46% |
| NAV return | -2.59% | -2.34% | -8.66% | -2.42% | +7.01% | +1.26% | +6.60% | -5.73% | +0.46% | -0.97% |
| NAV total return | -2.59% | -2.34% | -7.20% | +1.40% | +14.07% | +11.82% | +18.54% | +4.71% | +10.81% | +9.97% |
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 | 0.20% | 0.20% | annualised SD of daily total returns, √252 |
| Volatility, 3 years | 0.18% | 0.15% | as above |
| Volatility, 5 years | 0.21% | 0.15% | as above |
| Maximum drawdown, 3 years | -27.52% | -15.85% | peak-to-trough on the total-return index |
| Sharpe ratio, 3 years | 0.57 | 0.92 | excess over FRED DGS3MO (window average) (avg 4.52%), annualised |
| Sortino ratio, 3 years | 0.82 | 1.30 | downside deviation of excess returns |
| Beta vs. benchmark proxy, 3 years | 0.80 | — | AGG (U.S. aggregate bond ETF proxy), daily, aligned dates |
| Correlation, 3 years | 0.23 | — | 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 Calamos Convertible Opportunities & Income Fund. Figures carry their own dates and sources; a discount to NAV does not guarantee convergence or any return. This is not investment advice.