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
2026-06-15
$396.80
$401.75
$392.85
$399.76
$390.74
+6.06
+1.55%
$396.80
2026-06-16
$395.79
$396.84
$390.69
$393.83
$399.76
-3.97
-0.99%
$392.85
2026-06-17
$390.25
$390.37
$377.32
$378.91
$393.83
-3.58
-0.91%
$389.28
2026-06-18
$377.82
$381.37
$373.28
$379.40
$378.91
-1.09
-0.29%
$388.16
2026-06-22
$375.74
$381.63
$367.07
$367.34
$379.40
-3.66
-0.96%
$384.42
2026-06-23
$372.32
$377.22
$370.69
$373.94
$367.34
+4.99
+1.36%
$389.64
2026-06-25
$362.70
$364.23
$349.20
$352.83
$373.94
-11.24
-3.01%
$377.92
2026-06-26
$357.12
$376.61
$355.43
$372.97
$352.83
+4.30
+1.22%
$382.52
2026-06-29
$377.50
$380.50
$366.02
$368.57
$372.97
+4.53
+1.21%
$387.17
2026-06-30
$370.88
$374.15
$367.47
$373.02
$368.57
+2.31
+0.63%
$389.60
2026-07-01
$380.82
$388.83
$374.89
$384.28
$373.02
+7.81
+2.09%
$397.75
2026-07-02
$384.48
$392.19
$383.70
$390.49
$384.28
+0.20
+0.05%
$397.96
2026-07-07
$392.54
$395.57
$388.22
$388.84
$390.49
+2.05
+0.52%
$400.05
2026-07-08
$384.03
$385.29
$381.33
$383.34
$388.84
-4.81
-1.24%
$395.10
2026-07-09
$374.45
$384.65
$373.35
$384.36
$383.34
-8.89
-2.32%
$385.93
2026-07-10
$387.80
$391.88
$381.50
$385.10
$384.36
+3.44
+0.89%
$389.39
2026-07-13
$387.75
$393.64
$384.15
$390.99
$385.10
+2.64
+0.69%
$392.06
2026-07-14
$382.82
$388.19
$378.65
$384.93
$390.99
-8.17
-2.09%
$383.87
2026-07-15
$387.80
$398.96
$386.40
$395.63
$384.93
+2.87
+0.75%
$386.73
2026-07-16
$398.31
$405.99
$392.05
$401.10
$395.63
+2.68
+0.68%
$389.35
2026-07-17
$394.86
$398.39
$389.39
$393.82
$401.10
-6.25
-1.56%
$383.29
2026-07-21
$398.81
$401.47
$396.32
$397.75
$393.82
+4.99
+1.27%
$388.14
2026-07-22
$399.58
$401.00
$386.97
$390.34
$397.75
+1.83
+0.46%
$389.93
2026-07-23
$389.96
$391.78
$377.40
$381.58
$390.34
-0.38
-0.10%
$389.55
2026-07-24
$387.05
$389.03
$380.65
$381.70
$381.58
+5.47
+1.43%
$395.14
2026-07-27
$390.07
$394.20
$387.99
$389.10
$381.70
+8.37
+2.19%
$403.80
2026-07-28
$393.16
$400.32
$391.30
$393.35
$389.10
+4.06
+1.04%
$408.01
2026-07-29
$393.40
$401.25
$388.74
$390.54
$393.35
+0.05
+0.01%
$408.07
2026-07-30
$437.90
$458.69
$432.44
$451.10
$390.54
+47.36
+12.13%
$457.55
2026-07-31
$450.00
$466.84
$449.55
$464.72
$451.10
-1.10
-0.24%
$456.44
2026-08-03
$476.39
$491.64
$475.00
$487.65
$464.72
+11.67
+2.51%
$467.90
2026-08-04
$480.90
$499.44
$479.17
$492.81
$487.65
-6.75
-1.38%
$461.43
2026-08-05
$496.36
$498.21
$485.68
$487.46
$492.81
+3.55
+0.72%
$464.75
2026-08-06
$488.55
$501.56
$488.52
$499.86
$487.46
+1.09
+0.22%
$465.79
2026-08-07
$499.21
$505.18
$498.73
$499.99
$499.86
-0.65
-0.13%
$465.18
2026-08-10
$503.44
$513.73
$502.50
$506.06
$499.99
+3.45
+0.69%
$468.39
2026-08-11
$504.33
$505.33
$499.55
$503.81
$506.06
-1.73
-0.34%
$466.79
2026-08-12
$499.99
$501.50
$491.52
$492.43
$503.81
-3.82
-0.76%
$463.25
2026-08-13
$493.26
$501.34
$493.01
$496.88
$492.43
+0.83
+0.17%
$464.03
2026-08-14
$496.36
$500.01
$493.93
$495.40
$496.88
-0.52
-0.11%
$463.54
2026-08-17
$490.14
$492.66
$478.41
$480.35
$495.40
-5.26
-1.06%
$458.62
2026-08-18
$481.54
$484.27
$477.15
$481.63
$480.35
+1.19
+0.25%
$459.76
2026-08-19
$480.06
$489.29
$479.55
$484.31
$481.63
-1.56
-0.32%
$458.26
2026-08-20
$483.30
$484.16
$479.50
$481.15
$484.31
-1.01
-0.21%
$457.31
2026-08-21
$479.88
$486.36
$478.53
$483.24
$481.15
-1.27
-0.26%
$456.10
2026-08-24
$483.20
$490.61
$481.86
$487.31
$483.24
-0.04
-0.01%
$456.07
2026-08-25
$485.44
$492.44
$484.30
$491.71
$487.31
-1.87
-0.38%
$454.32
2026-08-26
$487.85
$497.40
$487.31
$496.37
$491.71
-3.86
-0.79%
$450.75
2026-08-27
$494.88
$506.47
$490.08
$505.06
$496.37
-1.49
-0.30%
$449.40
2026-08-28
$505.33
$517.78
$504.87
$513.53
$505.06
+0.27
+0.05%
$449.64
2026-08-31
$510.38
$512.19
$506.40
$507.29
$513.53
-3.15
-0.61%
$446.88
2026-09-01
$497.52
$505.97
$496.78
$501.02
$507.29
-9.77
-1.93%
$438.27
2026-09-02
$499.85
$500.27
$493.81
$496.82
$501.02
-1.17
-0.23%
$437.25
2026-09-03
$501.66
$515.64
$500.80
$510.12
$496.82
+4.84
+0.97%
$441.51
2026-09-04
$510.00
$511.00
$499.36
$499.70
$510.12
-0.12
-0.02%
$441.41
2026-09-08
$493.01
$495.19
$490.15
$493.95
$499.70
-6.69
-1.34%
$435.50
2026-09-09
$493.07
$494.39
$489.80
$491.65
$493.95
-0.88
-0.18%
$434.72
2026-09-10
$488.32
$494.52
$486.00
$492.44
$491.65
-3.33
-0.68%
$431.78
2026-09-11
$495.65
$498.97
$492.58
$495.63
$492.44
+3.21
+0.65%
$434.59
📈 Overnight % Gain Trend
Cumulative overnight-only return, indexed to 0% on 2026-06-12
(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
$390.74
$389.60
-1.14
-0.29%
2026-07
$389.60
$456.44
+66.84
+17.16%
2026-08
$456.44
$446.88
-9.56
-2.09%
2026-09
$446.88
$434.59
-12.29
-2.75%
🌙 Overnight vs. Intraday Return
Overnight (close→next open) Intraday (open→close)
From 2025-04-23 to 2026-09-04 (341 trading days), $1 invested
overnight-only would now be worth $1.30;
$1 invested intraday-only would be worth $1.04.
MSFT's historical return has leaned mostly on the overnight session.
This reflects a statistical pattern in past prices, not a trading strategy or investment advice —
it ignores transaction costs and slippage.
🎯 Best Strategy Backtest
See which saved strategy has the best real backtested win-rate on MSFT, with buy/sell triggers plotted right on the chart.