| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ARM.MC | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | +10.1% | +47.2% | −8.5% | +7.5% | −8.5% | +3.7% | −7.1% | — | — | — | — | — | +40.5% | +7.5% | +33.0pp |
| 2025 | +2.0% | −9.0% | +2.7% | −2.2% | +0.7% | +0.0% | +0.0% | +0.7% | +0.0% | −3.3% | +0.0% | +0.0% | −8.6% | +17.7% | −26.4pp |
| 2024 | +3.9% | −5.3% | +0.0% | −3.7% | +38.2% | +0.5% | +0.2% | +0.7% | +0.7% | +0.7% | −3.0% | −2.4% | +27.6% | +24.9% | +2.7pp |
| 2023 | +0.0% | +10.7% | −6.6% | −1.9% | +0.0% | +13.2% | −2.9% | −14.4% | −4.9% | −3.7% | −0.8% | −2.3% | −15.3% | +26.2% | −41.5pp |
| 2022 | −2.0% | −4.4% | +10.5% | +0.0% | −7.9% | −5.1% | −6.6% | +0.6% | −8.3% | +5.6% | −6.6% | +6.4% | −18.3% | −18.2% | −0.1pp |
| 2021 | +9.6% | +0.4% | −1.5% | +3.3% | +1.7% | −3.6% | +6.4% | +2.9% | −7.0% | −3.0% | +5.6% | −3.4% | +10.6% | +28.7% | −18.1pp |
| 2020 | +2.7% | +5.2% | −33.2% | +11.7% | +2.4% | −5.6% | +1.1% | +1.1% | −3.3% | −10.6% | +2.8% | +3.8% | −26.5% | +18.3% | −44.9pp |
| 2019 | +1.8% | +4.8% | +3.3% | −0.2% | +0.0% | +0.0% | +0.5% | +1.5% | −1.0% | +1.0% | +11.9% | +0.0% | +25.6% | +31.2% | −5.7pp |
| 2018 · part | — | — | — | — | — | — | — | — | — | — | +0.0% | −3.2% | −3.2% | −4.6% | +1.3pp |
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. ARM.MC 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.
