| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | GMAB | SPY | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 · ytd | +5.9% | −9.8% | −8.9% | −1.2% | −0.7% | +4.3% | +3.8% | — | — | — | — | — | −7.4% | +7.5% | −14.9pp |
| 2025 | −5.7% | +15.3% | −13.7% | +8.0% | −0.9% | −1.4% | +4.9% | +14.8% | +23.3% | −6.7% | +13.1% | −4.8% | +47.6% | +17.7% | +29.9pp |
| 2024 | −13.3% | +0.6% | +7.7% | −7.4% | +1.8% | −10.9% | +12.6% | −1.7% | −12.3% | −8.4% | −3.7% | −2.9% | −34.5% | +24.9% | −59.3pp |
| 2023 | −7.6% | −4.1% | +0.5% | +8.6% | −4.4% | −3.1% | +8.8% | −7.4% | −7.9% | −19.5% | +11.3% | +0.7% | −24.9% | +26.2% | −51.0pp |
| 2022 | −13.9% | −1.8% | +8.1% | −2.8% | −14.0% | +7.4% | +9.6% | −0.4% | −9.5% | +19.9% | +20.8% | −8.9% | +7.1% | −18.2% | +25.3pp |
| 2021 | −2.4% | −14.6% | −3.1% | +12.3% | +10.2% | +0.5% | +10.4% | +5.2% | −7.8% | +2.2% | −13.7% | +2.7% | −2.7% | +28.7% | −31.4pp |
| 2020 | +3.9% | −1.9% | −7.0% | +14.8% | +25.2% | +11.2% | +0.9% | +10.4% | −3.0% | −8.1% | +14.7% | +5.3% | +82.1% | +18.3% | +63.8pp |
| 2019 | −10.5% | +17.5% | +0.6% | −4.2% | +4.1% | +6.2% | −1.0% | +11.4% | −0.6% | +7.8% | +7.1% | −4.6% | +35.5% | +31.2% | +4.3pp |
| 2018 | +10.8% | +13.2% | +4.2% | −7.0% | −24.7% | +0.9% | +12.3% | +1.0% | −9.3% | −13.2% | +12.5% | +7.1% | −0.6% | −4.6% | +4.0pp |
| 2017 | +16.4% | +2.6% | −2.2% | +3.0% | +6.8% | +0.4% | +6.6% | +2.7% | −5.6% | −8.7% | −2.2% | −16.0% | −0.0% | +21.7% | −21.7pp |
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. GMAB 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.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Years ⓘ | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Positive ⓘ | 40% | 50% | 50% | 50% | 50% | 70% | 90% | 60% | 20% | 30% | 70% | 40% |
| Median | −4.1% | −0.6% | −0.8% | +0.9% | +0.6% | +0.7% | +7.7% | +1.8% | −6.7% | −7.4% | +9.2% | −3.6% |
| Best | +16.4% | +17.5% | +8.1% | +14.8% | +25.2% | +11.2% | +12.6% | +14.8% | +23.3% | +19.9% | +20.8% | +7.1% |
| Worst | −13.9% | −14.6% | −13.7% | −7.4% | −24.7% | −10.9% | −1.0% | −12.6% | −12.3% | −19.5% | −13.7% | −16.0% |
| vs SPY ⓘ | −4.9pp | −0.1pp | −1.8pp | +2.0pp | −4.0pp | −0.5pp | +5.1pp | +2.3pp | −2.8pp | −5.9pp | +2.8pp | −3.5pp |
120 monthly observations across 2016–2026, benchmark SPY. The highlighted column is the current calendar month. Months are calendar months, not rolling 30-day windows.
