| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | CETY | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | +5.7% | +5.4% | +19.0% | −26.2% | +3.8% | +14.7% | +8.7% | — | — | — | — | — | +26.5% | +7.5% | +19.0pp |
| 2025 | −21.8% | −5.2% | +7.7% | −21.2% | −33.4% | −2.7% | −14.8% | +13.9% | +17.4% | −47.1% | −19.9% | −59.9% | −92.1% | +17.7% | −109.8pp |
| 2024 | −42.7% | −18.0% | +51.8% | +40.2% | −10.0% | −2.2% | −13.6% | −2.6% | −9.9% | −24.0% | −9.1% | −11.2% | −59.1% | +24.9% | −84.0pp |
| 2023 | +6071.4% | +11.1% | −27.9% | −39.3% | +1.0% | −17.5% | −18.3% | +7.7% | +21.4% | −11.8% | −6.7% | −2.6% | +2042.9% | +26.2% | +2016.7pp |
| 2022 | +79.5% | −25.3% | +11.9% | −7.6% | +1.6% | +0.0% | +31.9% | +4.6% | +7.7% | −8.5% | −6.2% | +76.8% | +218.2% | −18.2% | +236.4pp |
| 2021 | +55.0% | −7.5% | −28.5% | +28.0% | −13.7% | −2.1% | −17.3% | −14.0% | +2.5% | −15.5% | −13.9% | −37.7% | −63.3% | +28.7% | −92.1pp |
| 2020 | +96.9% | −29.3% | −33.1% | +23.6% | −25.5% | +8.5% | −7.3% | +74.5% | −16.7% | −26.2% | +18.6% | +185.7% | +214.1% | +18.3% | +195.8pp |
| 2019 | +49.5% | +82.4% | −16.7% | −15.1% | +21.5% | −9.5% | +42.9% | −17.3% | −15.3% | −9.5% | +15.8% | −13.2% | +92.9% | +31.2% | +61.7pp |
| 2018 | −45.9% | −9.7% | +84.6% | −20.8% | −10.5% | +120.0% | −31.6% | +4.7% | −3.0% | −6.2% | +2.5% | −20.8% | −25.6% | −4.6% | −21.0pp |
| 2017 | −21.9% | −43.9% | +43.8% | +45.7% | +79.1% | +83.3% | −25.0% | +24.2% | +2.0% | −18.2% | +11.1% | −30.0% | +82.2% | +21.7% | +60.5pp |
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. CETY is on the price only (split-adjusted close; dividends NOT included) basis, SPY on the total return (splits + dividends) basis. THE TWO DIFFER: one series includes dividends and the other does not, so the Δ column flatters whichever one is on the total-return basis. Read it with that in mind — the bases are printed rather than silently reconciled.
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.
