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
2026-07-17
$185.04
+4.02
+2.17%
$189.06
$189.06
$191.25
$184.84
$185.69
2026-07-21
$185.69
-5.93
-3.19%
$183.02
$179.76
$180.83
$176.62
$176.82
2026-07-22
$176.82
+1.88
+1.06%
$184.97
$178.70
$180.90
$177.33
$178.02
2026-07-23
$178.02
-1.46
-0.82%
$183.45
$176.56
$180.67
$173.94
$174.85
2026-07-24
$174.85
+1.36
+0.78%
$184.88
$176.21
$179.59
$173.50
$173.57
2026-07-27
$173.57
+1.41
+0.81%
$186.38
$174.98
$174.99
$171.19
$172.61
2026-07-28
$172.61
+2.33
+1.35%
$188.90
$174.94
$181.29
$174.85
$174.93
2026-07-29
$174.93
+0.12
+0.07%
$189.03
$175.05
$186.42
$174.80
$186.29
2026-07-30
$186.29
+0.00
+0.00%
$189.03
$186.29
$187.75
$180.50
$181.90
2026-07-31
$181.90
-3.13
-1.72%
$185.77
$178.77
$181.57
$176.75
$180.98
2026-08-03
$180.98
-0.11
-0.06%
$185.66
$180.87
$183.02
$178.94
$179.54
2026-08-04
$179.54
-3.00
-1.67%
$182.56
$176.54
$188.20
$174.17
$187.90
2026-08-05
$187.90
-2.82
-1.50%
$179.82
$185.08
$185.08
$171.34
$178.40
2026-08-06
$178.40
-0.14
-0.08%
$179.68
$178.26
$184.27
$178.26
$182.60
2026-08-07
$182.60
+1.10
+0.60%
$180.76
$183.70
$185.82
$181.96
$184.03
2026-08-10
$184.03
-2.00
-1.09%
$178.79
$182.03
$183.00
$180.17
$181.05
2026-08-11
$181.05
+0.91
+0.50%
$179.69
$181.96
$183.53
$181.21
$181.97
2026-08-12
$181.97
-1.07
-0.59%
$178.64
$180.90
$183.60
$180.45
$183.08
2026-08-13
$183.08
+0.49
+0.27%
$179.11
$183.57
$187.13
$183.57
$186.19
2026-08-14
$186.19
+1.02
+0.55%
$180.10
$187.21
$187.43
$181.36
$185.20
2026-08-17
$185.20
+0.00
+0.00%
$180.10
$185.20
$185.61
$181.96
$182.11
2026-08-18
$182.11
+2.74
+1.50%
$182.81
$184.85
$184.85
$181.34
$181.40
2026-08-19
$181.40
-0.52
-0.29%
$182.28
$180.88
$184.28
$179.16
$182.43
2026-08-20
$182.43
-2.00
-1.10%
$180.28
$180.43
$182.98
$180.22
$180.54
2026-08-21
$180.54
+0.17
+0.09%
$180.45
$180.71
$183.73
$180.15
$182.59
2026-08-24
$182.59
+0.73
+0.40%
$181.17
$183.32
$185.33
$181.93
$185.07
2026-08-25
$185.07
-0.04
-0.02%
$181.14
$185.03
$188.09
$184.20
$187.62
2026-08-26
$187.62
+0.01
+0.01%
$181.15
$187.63
$188.50
$184.94
$185.98
2026-08-27
$185.98
-2.24
-1.20%
$178.96
$183.74
$188.34
$183.48
$186.96
2026-08-28
$186.96
+0.93
+0.50%
$179.85
$187.89
$191.50
$185.63
$190.95
2026-08-31
$190.95
-1.85
-0.97%
$178.11
$189.10
$191.55
$187.93
$189.66
2026-09-01
$189.66
+0.00
+0.00%
$178.11
$189.66
$191.06
$187.10
$188.81
2026-09-02
$188.81
-0.56
-0.30%
$177.58
$188.25
$188.79
$184.08
$186.42
2026-09-03
$186.42
+0.71
+0.38%
$178.26
$187.13
$194.23
$187.13
$191.52
2026-09-04
$191.52
-0.34
-0.18%
$177.94
$191.18
$192.00
$186.75
$189.44
2026-09-08
$189.44
-1.71
-0.90%
$176.34
$187.73
$192.12
$185.81
$188.69
2026-09-09
$188.69
+0.57
+0.30%
$176.87
$189.26
$189.55
$185.71
$186.74
2026-09-10
$186.74
+0.62
+0.33%
$177.46
$187.36
$187.50
$179.52
$181.42
2026-09-11
$181.42
+1.76
+0.97%
$179.18
$183.18
$186.12
$181.30
$185.47
2026-09-14
$185.47
-0.32
-0.17%
$178.87
$185.15
$186.27
$180.97
$183.07
2026-09-15
$183.07
-0.60
-0.33%
$178.28
$182.47
$184.57
$180.73
$183.14
2026-09-16
$183.14
-0.37
-0.20%
$177.92
$182.77
$185.71
$179.70
$180.02
2026-09-17
$180.02
+2.70
+1.50%
$180.59
$182.72
$182.72
$180.46
$181.13
2026-09-18
$181.13
-0.42
-0.23%
$180.17
$180.71
$181.92
$178.28
$178.59
2026-09-21
$178.59
-0.33
-0.18%
$179.84
$178.26
$180.99
$176.00
$176.28
2026-09-22
$176.28
+0.11
+0.06%
$179.95
$176.39
$178.37
$174.27
$175.84
2026-09-23
$175.84
-1.32
-0.75%
$178.60
$174.52
$176.48
$170.32
$170.53
2026-09-24
$170.53
-0.06
-0.04%
$178.54
$170.47
$170.68
$164.78
$166.12
2026-09-25
$166.12
-0.12
-0.07%
$178.41
$166.00
$168.13
$164.84
$166.15
2026-09-28
$166.15
+0.17
+0.10%
$178.59
$166.32
$167.23
$162.21
$163.43
2026-09-29
$163.43
-0.87
-0.53%
$177.64
$162.56
$163.60
$160.55
$162.81
2026-09-30
$162.81
+1.52
+0.93%
$179.30
$164.33
$165.06
$159.92
$160.12
2026-10-01
$160.12
-0.12
-0.07%
$179.16
$160.00
$161.58
$157.34
$158.02
2026-10-02
$158.02
+0.00
+0.00%
$179.16
$158.02
$163.25
$157.82
$158.49
2026-10-05
$158.49
-0.62
-0.39%
$178.46
$157.87
$161.96
$156.60
$161.82
2026-10-06
$161.82
+0.68
+0.42%
$179.21
$162.50
$170.18
$162.07
$169.70
2026-10-07
$169.70
+0.00
+0.00%
$179.21
$169.70
$172.31
$167.93
$170.38
2026-10-08
$170.38
+0.76
+0.45%
$180.01
$171.14
$171.14
$167.00
$170.01
2026-10-09
$170.01
+8.33
+4.90%
$188.83
$178.34
$185.00
$178.13
$182.49
📈 Overnight % Gain Trend
Cumulative overnight-only return, indexed to 0% on 2026-07-16
(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 %
2026-07
$185.04
$185.77
+0.73
+0.40%
2026-08
$185.77
$178.11
-7.66
-4.12%
2026-09
$178.11
$179.30
+1.19
+0.67%
2026-10
$179.30
$188.83
+9.53
+5.32%
📅 Seasonality — Close Price by Year
Each line is one calendar year's close price (or % 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
Overnight (close→next open) Intraday (open→close)
From 2016-01-04 to 2026-10-09 (2,700 trading days), $1 invested
overnight-only would now be worth $1.66;
$1 invested intraday-only would be worth $1.14.
SBAC'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 SBAC, with buy/sell triggers plotted right on the chart.