| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ACIO | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | +0.5% | −0.9% | −3.5% | +7.8% | +3.9% | −1.7% | −2.4% | — | — | — | — | — | +3.3% | +7.5% | −4.2pp |
| 2025 | +1.8% | −1.2% | −4.3% | −0.5% | +4.4% | +3.1% | +0.8% | +1.7% | +2.4% | +1.4% | +0.1% | −0.8% | +9.0% | +17.7% | −8.7pp |
| 2024 | +1.7% | +4.3% | +2.6% | −2.9% | +4.1% | +3.5% | +1.4% | +2.9% | +1.4% | −0.6% | +4.1% | −2.0% | +21.9% | +24.9% | −3.0pp |
| 2023 | +3.4% | −1.2% | +2.7% | +0.4% | −0.8% | +3.6% | +2.4% | −1.1% | −3.3% | −1.0% | +7.2% | +2.8% | +15.9% | +26.2% | −10.3pp |
| 2022 | −3.2% | −1.4% | +1.3% | −4.5% | −0.3% | −3.7% | +6.2% | −2.4% | −5.7% | +5.1% | +2.8% | −4.2% | −10.3% | −18.2% | +7.9pp |
| 2021 | −2.4% | +1.0% | +3.5% | +4.8% | +0.3% | +1.3% | +2.3% | +1.0% | −3.7% | +5.7% | −0.9% | +4.1% | +18.0% | +28.7% | −10.7pp |
| 2020 | −2.1% | −3.5% | −0.3% | +0.3% | +2.5% | +2.4% | +3.4% | +4.9% | −2.3% | −1.9% | +4.7% | +1.8% | +9.9% | +18.3% | −8.5pp |
| 2019 · part | — | — | — | — | — | — | — | −1.8% | +1.5% | +0.8% | +1.8% | +1.8% | +4.1% | +31.2% | −27.1pp |
A month’s return is its month-end close over the prior month-end’s, so a year’s figure is exactly the product of its twelve monthly cells — no separate annualisation, no resampling. A blank cell means no return exists for that month (the series had not started, or it is the very first month-end, which has nothing to be measured against). Blank is never zero.
Basis. ACIO is on the total return (splits + dividends) basis, SPY on the total return (splits + dividends) basis. Both columns are on the same basis, so the Δ column is a like-for-like difference.
Partial years. A year marked “ytd” or “part” does not cover the full calendar year: either the stored history starts inside it (the figure is measured from the first month-end present) or the data stops before December (the figure runs through the last stored close). The row’s own tooltip names the exact boundary. It is never dressed up as a calendar-year return.
End of day. These are stored end-of-day closes, and the window is anchored on the LAST stored bar rather than today’s date — so the newest row ends where the data ends. Nothing here is intraday.
