Last 59 trading days. "Overnight" = today's Open vs the PRIOR day's Close
(the same move plotted as the pink dotted line on the chart) — each day's own Open→Close
move is not counted here. Overnight $/% is what you'd have earned holding only from close
to next open; Cum. Index is the running compounded value shown on the chart's pink line.
Date
Prior Close
Overnight $
Overnight %
Cum. Index
Open
High
Low
Close
2026-10-26
$43.79
+1.07
+2.44%
$32.49
$44.86
$45.45
$44.08
$44.69
2026-10-23
$40.00
-0.17
-0.44%
$31.72
$39.83
$44.34
$39.63
$43.79
2026-10-22
$39.57
+0.05
+0.13%
$31.86
$39.62
$40.16
$39.50
$40.00
2026-10-21
$39.07
+0.01
+0.03%
$31.82
$39.08
$39.66
$39.05
$39.57
2026-10-20
$38.50
+0.11
+0.29%
$31.81
$38.61
$39.41
$38.42
$39.07
2026-10-19
$37.00
+0.84
+2.27%
$31.72
$37.84
$39.00
$37.76
$38.50
2026-10-16
$37.82
+0.33
+0.86%
$31.02
$38.15
$38.20
$36.74
$37.00
2026-10-15
$36.89
+0.31
+0.84%
$30.75
$37.20
$38.32
$37.04
$37.82
2026-10-14
$36.57
-0.17
-0.46%
$30.49
$36.40
$37.24
$36.12
$36.89
2026-10-13
$37.37
-0.14
-0.37%
$30.64
$37.23
$37.35
$36.34
$36.57
2026-10-12
$37.07
+0.14
+0.38%
$30.75
$37.21
$37.71
$36.94
$37.37
2026-10-09
$36.05
+0.50
+1.39%
$30.64
$36.55
$37.14
$36.33
$37.07
2026-10-08
$36.65
-0.45
-1.23%
$30.22
$36.20
$36.28
$35.09
$36.05
2026-10-07
$37.80
-0.50
-1.32%
$30.59
$37.30
$37.86
$36.27
$36.65
2026-10-06
$38.48
+0.63
+1.64%
$31.00
$39.11
$39.15
$37.07
$37.80
2026-10-05
$34.75
+0.35
+1.01%
$30.50
$35.10
$40.17
$35.02
$38.48
2026-10-02
$34.55
-0.16
-0.46%
$30.20
$34.39
$35.02
$33.73
$34.75
2026-10-01
$35.67
-0.39
-1.11%
$30.34
$35.28
$35.80
$34.52
$34.55
2026-09-30
$35.57
+0.21
+0.59%
$30.68
$35.78
$35.90
$35.37
$35.67
2026-09-29
$35.36
-0.38
-1.07%
$30.50
$34.98
$35.64
$34.89
$35.57
2026-09-28
$35.32
-0.56
-1.59%
$30.83
$34.76
$35.70
$34.63
$35.36
2026-09-25
$34.83
+0.17
+0.49%
$31.33
$35.00
$35.47
$34.70
$35.32
2026-09-24
$34.75
-0.06
-0.17%
$31.18
$34.69
$35.03
$34.36
$34.83
2026-09-23
$35.22
+0.21
+0.60%
$31.23
$35.43
$35.66
$34.60
$34.75
2026-09-22
$34.69
-0.21
-0.61%
$31.04
$34.48
$35.29
$34.37
$35.22
2026-09-21
$34.74
-0.04
-0.12%
$31.23
$34.70
$34.86
$34.36
$34.69
2026-09-18
$34.53
+0.37
+1.06%
$31.27
$34.90
$35.15
$34.72
$34.74
2026-09-17
$34.40
-0.12
-0.35%
$30.94
$34.28
$34.77
$34.22
$34.53
2026-09-16
$34.15
+0.21
+0.61%
$31.05
$34.36
$34.63
$34.05
$34.40
2026-09-15
$32.65
-0.30
-0.92%
$30.86
$32.35
$34.19
$32.34
$34.15
2026-09-14
$32.47
+0.37
+1.14%
$31.15
$32.84
$32.96
$32.52
$32.65
2026-09-11
$32.23
+0.22
+0.68%
$30.80
$32.45
$32.70
$32.28
$32.47
2026-09-10
$33.04
-0.58
-1.76%
$30.59
$32.46
$32.68
$32.21
$32.23
2026-09-09
$33.53
-0.06
-0.18%
$31.13
$33.47
$33.75
$32.98
$33.04
2026-09-08
$33.60
+0.11
+0.33%
$31.19
$33.71
$33.84
$33.36
$33.53
2026-09-04
$34.41
-0.45
-1.31%
$31.09
$33.96
$34.19
$33.55
$33.60
2026-09-03
$34.22
+0.44
+1.30%
$31.50
$34.66
$34.66
$34.08
$34.41
2026-09-02
$33.29
+0.75
+2.25%
$31.10
$34.04
$34.50
$33.74
$34.22
2026-09-01
$33.16
+0.17
+0.51%
$30.41
$33.33
$33.67
$33.15
$33.29
2026-08-31
$33.23
-0.47
-1.41%
$30.26
$32.76
$33.26
$32.54
$33.16
2026-08-28
$34.10
-0.32
-0.94%
$30.69
$33.78
$33.93
$33.12
$33.23
2026-08-27
$33.75
+0.14
+0.41%
$30.98
$33.89
$34.16
$33.67
$34.10
2026-08-26
$34.36
-0.58
-1.69%
$30.85
$33.78
$33.90
$33.36
$33.75
2026-08-25
$33.02
+0.78
+2.36%
$31.38
$33.80
$34.47
$33.73
$34.36
2026-08-24
$33.45
-0.61
-1.82%
$30.66
$32.84
$33.32
$32.74
$33.02
2026-08-21
$33.41
-0.05
-0.15%
$31.23
$33.36
$33.98
$33.28
$33.45
2026-08-20
$34.11
-0.51
-1.50%
$31.27
$33.60
$33.77
$33.20
$33.41
2026-08-19
$32.96
+0.46
+1.40%
$31.75
$33.42
$34.19
$33.26
$34.11
2026-08-18
$32.84
+0.04
+0.12%
$31.31
$32.88
$33.11
$32.66
$32.96
2026-08-17
$31.94
+0.37
+1.16%
$31.27
$32.31
$32.94
$32.28
$32.84
2026-08-14
$31.34
-0.03
-0.10%
$30.92
$31.31
$31.98
$31.14
$31.94
2026-08-13
$31.42
+0.08
+0.25%
$30.95
$31.50
$31.55
$30.98
$31.34
2026-08-12
$30.85
-0.16
-0.52%
$30.87
$30.69
$31.61
$30.69
$31.42
2026-08-11
$30.87
+0.05
+0.16%
$31.03
$30.92
$30.98
$30.52
$30.85
2026-08-10
$31.25
-0.57
-1.82%
$30.98
$30.68
$31.01
$30.55
$30.87
2026-08-07
$29.83
+1.61
+5.40%
$31.55
$31.44
$31.79
$30.92
$31.25
2026-08-06
$29.26
+0.24
+0.82%
$29.94
$29.50
$29.86
$28.48
$29.83
2026-08-05
$29.02
+0.44
+1.52%
$29.69
$29.46
$29.76
$29.21
$29.26
2026-08-04
$28.68
+0.57
+1.99%
$29.25
$29.25
$29.32
$28.94
$29.02
📈 Overnight % Gain Trend
Cumulative overnight-only return, indexed to 0% on 2026-08-03
(same window as the chart overlay and table above, just plotted as % instead of $).
🗓️ Overnight End-of-Month PnL
One checkpoint per calendar month (value at the last trading day seen that month) from the
same overnight-only cumulative series above. The first and last
month shown may be partial if the data window doesn't start/end on a month boundary.
Month
Start Value
End Value
PnL $
PnL %
2026-08
$28.68
$30.26
+1.58
+5.49%
2026-09
$30.26
$30.68
+0.42
+1.40%
2026-10
$30.68
$32.49
+1.81
+5.91%
📅 Seasonality — Adjusted Close by Year
Each line is one calendar year's adjusted close price (split- and dividend-adjusted, so a stock split does not show as a
crash), or the % change from that year's first trading day in "% from Jan 1" mode, aligned by month/day so the same point in the calendar lines
up across years. Most recent year is drawn thicker. Click a year in the legend to hide/show it.
🌙 Overnight vs. Intraday Return
Not enough historical data yet for this ticker to compute an overnight/intraday split.
🎯 Best Strategy Backtest
See which saved strategy has the best real backtested win-rate on GMAB, with buy/sell triggers plotted right on the chart.
Watch an animated paper-trading replay of buying each lower-Bollinger-band touch and selling at the upper band on this stock, with your own capital and look-back, and the profit and loss building up as it plays.