| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | MAS | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | +4.1% | +8.8% | −15.7% | +19.0% | −1.7% | +15.8% | −10.8% | — | — | — | — | — | +15.4% | +7.5% | +7.8pp |
| 2025 | +9.2% | −4.8% | −7.5% | −12.8% | +3.5% | +3.1% | +5.9% | +8.2% | −4.1% | −8.0% | +0.7% | −2.2% | −10.9% | +17.7% | −28.6pp |
| 2024 | +0.5% | +14.5% | +2.8% | −13.2% | +2.6% | −4.6% | +16.8% | +2.6% | +5.5% | −4.8% | +1.2% | −9.9% | +10.0% | +24.9% | −14.8pp |
| 2023 | +14.0% | −0.9% | −5.2% | +7.6% | −9.2% | +18.8% | +5.8% | −2.3% | −9.4% | −2.5% | +16.8% | +10.6% | +46.6% | +26.2% | +20.4pp |
| 2022 | −9.8% | −11.1% | −9.0% | +3.3% | +8.1% | −10.7% | +9.4% | −7.7% | −8.2% | −0.9% | +10.4% | −8.1% | −32.1% | −18.2% | −13.9pp |
| 2021 | −0.9% | −2.0% | +12.6% | +6.6% | −5.2% | −2.3% | +1.4% | +2.1% | −8.5% | +18.0% | +0.9% | +6.6% | +29.6% | +28.7% | +0.9pp |
| 2020 | −0.7% | −13.0% | −16.1% | +19.1% | +13.7% | +7.6% | +14.1% | +2.0% | −5.4% | −2.5% | +0.1% | +2.3% | +16.2% | +18.3% | −2.2pp |
| 2019 | +11.2% | +15.9% | +4.7% | −0.3% | −10.6% | +12.4% | +4.2% | −0.1% | +2.3% | +11.3% | +0.6% | +3.1% | +66.3% | +31.2% | +35.1pp |
| 2018 | +1.9% | −7.9% | −1.7% | −6.1% | −1.6% | +0.4% | +8.1% | −5.9% | −3.6% | −17.7% | +5.6% | −7.7% | −32.7% | −4.6% | −28.1pp |
| 2017 | +4.5% | +2.5% | +0.6% | +9.2% | +0.6% | +2.6% | +0.0% | −3.6% | +6.1% | +2.4% | +7.8% | +2.4% | +40.5% | +21.7% | +18.8pp |
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. MAS 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.
