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
Open
High
Low
Close
Prior Close
Overnight $
Overnight %
Cum. Index
2026-06-09
$0.5400
$0.5571
$0.5000
$0.5024
$0.5390
+0.00
+0.19%
$0.5400
2026-06-16
$0.4090
$0.4390
$0.3640
$0.3970
$0.5024
-0.09
-18.59%
$0.4396
2026-06-17
$0.3880
$0.3970
$0.3750
$0.3820
$0.3970
-0.01
-2.27%
$0.4296
2026-06-18
$0.3860
$0.4200
$0.3690
$0.3690
$0.3820
+0.00
+1.05%
$0.4341
2026-06-22
$0.3840
$0.3900
$0.3510
$0.3640
$0.3690
+0.02
+4.07%
$0.4518
2026-06-23
$0.3582
$0.3700
$0.3510
$0.3644
$0.3640
-0.01
-1.59%
$0.4446
2026-06-25
$0.3499
$0.3499
$0.3301
$0.3310
$0.3644
-0.01
-3.98%
$0.4269
2026-06-26
$0.3300
$0.3400
$0.3105
$0.3300
$0.3310
-0.00
-0.30%
$0.4256
2026-06-29
$0.3300
$0.3300
$0.3071
$0.3120
$0.3300
+0.00
+0.00%
$0.4256
2026-06-30
$0.3065
$0.3221
$0.3065
$0.3190
$0.3120
-0.01
-1.76%
$0.4181
2026-07-01
$0.3400
$0.3496
$0.3231
$0.3477
$0.3190
+0.02
+6.58%
$0.4456
2026-07-02
$0.3438
$0.3460
$0.3200
$0.3200
$0.3477
-0.00
-1.12%
$0.4406
2026-07-07
$0.3300
$0.3790
$0.3010
$0.3600
$0.3200
+0.01
+3.12%
$0.4544
2026-07-08
$0.3450
$0.4400
$0.3197
$0.3661
$0.3600
-0.02
-4.17%
$0.4355
2026-07-09
$0.3663
$0.3896
$0.3488
$0.3885
$0.3661
+0.00
+0.05%
$0.4357
2026-07-10
$0.3700
$0.4188
$0.3669
$0.4174
$0.3885
-0.02
-4.76%
$0.4150
2026-07-13
$0.4213
$0.4990
$0.4000
$0.4636
$0.4174
+0.00
+0.93%
$0.4188
2026-07-14
$0.4690
$0.5495
$0.4400
$0.5291
$0.4636
+0.01
+1.16%
$0.4237
2026-07-15
$0.6000
$0.6339
$0.5020
$0.5290
$0.5291
+0.07
+13.40%
$0.4805
2026-07-16
$0.4818
$0.5800
$0.4511
$0.5000
$0.5290
-0.05
-8.92%
$0.4376
2026-07-17
$0.5146
$0.5333
$0.4901
$0.4920
$0.5000
+0.01
+2.92%
$0.4504
2026-07-21
$0.3600
$0.3780
$0.3400
$0.3749
$0.4920
-0.13
-26.83%
$0.3296
2026-07-22
$0.3499
$0.3501
$0.3000
$0.3059
$0.3749
-0.03
-6.67%
$0.3076
2026-07-23
$0.3100
$0.3163
$0.3007
$0.3123
$0.3059
+0.00
+1.34%
$0.3117
2026-07-24
$0.3180
$0.3449
$0.2910
$0.2912
$0.3123
+0.01
+1.83%
$0.3174
2026-07-27
$0.2900
$0.3050
$0.2875
$0.3039
$0.2912
-0.00
-0.41%
$0.3161
2026-07-28
$0.3010
$0.3150
$0.2850
$0.3000
$0.3039
-0.00
-0.95%
$0.3131
2026-07-29
$0.2981
$0.3199
$0.2500
$0.2850
$0.3000
-0.00
-0.63%
$0.3111
2026-07-30
$0.4081
$0.9000
$0.3365
$0.7800
$0.2850
+0.12
+43.19%
$0.4455
2026-07-31
$0.5582
$0.6373
$0.4193
$0.4770
$0.7800
-0.22
-28.44%
$0.3188
2026-08-03
$0.5056
$0.5200
$0.3922
$0.4149
$0.4770
+0.03
+6.00%
$0.3379
2026-08-04
$0.4045
$0.7830
$0.3999
$0.5986
$0.4149
-0.01
-2.51%
$0.3294
2026-08-05
$0.5131
$0.5943
$0.4815
$0.5250
$0.5986
-0.09
-14.28%
$0.2824
2026-08-06
$0.5095
$0.5200
$0.4329
$0.4715
$0.5250
-0.02
-2.95%
$0.2740
2026-08-07
$0.4659
$0.4768
$0.4052
$0.4322
$0.4715
-0.01
-1.19%
$0.2708
2026-08-10
$0.4364
$0.4364
$0.3900
$0.4029
$0.4322
+0.00
+0.97%
$0.2734
2026-08-11
$0.3940
$0.4049
$0.3660
$0.3716
$0.4029
-0.01
-2.21%
$0.2674
2026-08-12
$0.4058
$0.4058
$0.3661
$0.3768
$0.3716
+0.03
+9.20%
$0.2920
2026-08-13
$0.3690
$0.4041
$0.3618
$0.3655
$0.3768
-0.01
-2.07%
$0.2859
2026-08-14
$0.3670
$0.3888
$0.3650
$0.3674
$0.3655
+0.00
+0.41%
$0.2871
2026-08-17
$0.3892
$0.4038
$0.3337
$0.3420
$0.3674
+0.02
+5.93%
$0.3042
2026-08-18
$0.3400
$0.3549
$0.3067
$0.3450
$0.3420
-0.00
-0.58%
$0.3024
2026-08-19
$0.3318
$0.3545
$0.3300
$0.3488
$0.3450
-0.01
-3.83%
$0.2908
2026-08-20
$0.3469
$0.3500
$0.3303
$0.3416
$0.3488
-0.00
-0.54%
$0.2892
2026-08-21
$0.3378
$0.3698
$0.3303
$0.3474
$0.3416
-0.00
-1.11%
$0.2860
2026-08-24
$0.3370
$0.3450
$0.3300
$0.3324
$0.3474
-0.01
-2.99%
$0.2774
2026-08-25
$0.3400
$0.3402
$0.3303
$0.3402
$0.3324
+0.01
+2.29%
$0.2838
2026-08-26
$0.3440
$0.3498
$0.3180
$0.3211
$0.3402
+0.00
+1.12%
$0.2870
2026-08-27
$0.3348
$0.3348
$0.2825
$0.2862
$0.3211
+0.01
+4.27%
$0.2992
2026-08-28
$0.2791
$0.2888
$0.2790
$0.2820
$0.2862
-0.01
-2.48%
$0.2918
2026-08-31
$4.20
$4.36
$4.00
$4.25
$0.2820
+3.92
+1389.40%
$4.35
2026-09-01
$4.08
$4.27
$3.67
$3.68
$4.25
-0.17
-4.00%
$4.17
2026-09-02
$3.49
$3.98
$3.49
$3.53
$3.68
-0.19
-5.16%
$3.96
2026-09-03
$3.56
$3.65
$3.29
$3.32
$3.53
+0.03
+0.85%
$3.99
2026-09-04
$3.26
$3.31
$2.95
$2.98
$3.32
-0.06
-1.81%
$3.92
2026-09-08
$3.03
$3.11
$2.90
$2.93
$2.98
+0.05
+1.68%
$3.98
2026-09-09
$2.97
$3.30
$2.97
$3.14
$2.93
+0.04
+1.37%
$4.04
2026-09-10
$3.04
$3.23
$3.04
$3.23
$3.14
-0.10
-3.18%
$3.91
2026-09-11
$3.06
$3.06
$2.26
$2.55
$3.23
-0.17
-5.26%
$3.70
📈 Overnight % Gain Trend
Cumulative overnight-only return, indexed to 0% on 2026-06-08
(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 %
2026-06
$0.5390
$0.4181
-0.12
-22.43%
2026-07
$0.4181
$0.3188
-0.10
-23.75%
2026-08
$0.3188
$4.35
+4.03
+1263.14%
2026-09
$4.35
$3.70
-0.64
-14.77%
🌙 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 GCTK, with buy/sell triggers plotted right on the chart.