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
2026-06-03
₱2.10
₱2.10
₱2.10
₱2.10
₱2.09
+0.01
+0.48%
₱2.10
2026-06-04
₱2.09
₱2.11
₱2.08
₱2.11
₱2.10
-0.01
-0.48%
₱2.09
2026-06-05
₱2.11
₱2.14
₱2.09
₱2.13
₱2.11
+0.00
+0.00%
₱2.09
2026-06-08
₱2.15
₱2.16
₱2.00
₱2.15
₱2.13
+0.02
+0.94%
₱2.11
2026-06-09
₱2.14
₱2.20
₱2.14
₱2.20
₱2.15
-0.01
-0.47%
₱2.10
2026-06-10
₱2.15
₱2.20
₱2.15
₱2.19
₱2.20
-0.05
-2.27%
₱2.05
2026-06-11
₱2.19
₱2.23
₱2.15
₱2.19
₱2.19
+0.00
+0.00%
₱2.05
2026-06-15
₱2.19
₱2.30
₱2.19
₱2.25
₱2.19
+0.00
+0.00%
₱2.05
2026-06-16
₱2.25
₱2.25
₱2.20
₱2.24
₱2.25
+0.00
+0.00%
₱2.05
2026-06-17
₱2.24
₱2.28
₱2.22
₱2.27
₱2.24
+0.00
+0.00%
₱2.05
2026-06-18
₱2.27
₱2.29
₱2.26
₱2.29
₱2.27
+0.00
+0.00%
₱2.05
2026-06-19
₱2.29
₱2.30
₱2.25
₱2.29
₱2.29
+0.00
+0.00%
₱2.05
2026-06-24
₱2.30
₱2.30
₱2.22
₱2.22
₱2.29
+0.01
+0.44%
₱2.06
2026-06-25
₱2.23
₱2.30
₱2.20
₱2.27
₱2.22
+0.01
+0.45%
₱2.07
2026-06-26
₱2.27
₱2.30
₱2.22
₱2.23
₱2.27
+0.00
+0.00%
₱2.07
2026-06-29
₱2.23
₱2.23
₱2.19
₱2.20
₱2.23
+0.00
+0.00%
₱2.07
2026-06-30
₱2.23
₱2.23
₱2.20
₱2.20
₱2.20
+0.03
+1.36%
₱2.10
2026-07-01
₱2.20
₱2.20
₱2.18
₱2.18
₱2.20
+0.00
+0.00%
₱2.10
2026-07-02
₱2.17
₱2.25
₱2.17
₱2.25
₱2.18
-0.01
-0.46%
₱2.09
2026-07-03
₱2.25
₱2.25
₱2.25
₱2.25
₱2.25
+0.00
+0.00%
₱2.09
2026-07-07
₱2.21
₱2.25
₱2.20
₱2.20
₱2.25
-0.04
-1.78%
₱2.05
2026-07-08
₱2.20
₱2.21
₱2.20
₱2.20
₱2.20
+0.00
+0.00%
₱2.05
2026-07-17
₱2.59
₱2.79
₱2.53
₱2.79
₱2.20
+0.39
+17.73%
₱2.42
2026-07-22
₱2.46
₱2.65
₱2.46
₱2.59
₱2.79
-0.33
-11.83%
₱2.13
2026-07-23
₱2.55
₱2.59
₱2.55
₱2.55
₱2.59
-0.04
-1.54%
₱2.10
2026-07-24
₱2.49
₱2.55
₱2.46
₱2.48
₱2.55
-0.06
-2.35%
₱2.05
2026-07-27
₱2.58
₱2.60
₱2.53
₱2.60
₱2.48
+0.10
+4.03%
₱2.13
2026-07-28
₱2.60
₱2.60
₱2.54
₱2.59
₱2.60
+0.00
+0.00%
₱2.13
2026-07-29
₱2.46
₱2.58
₱2.46
₱2.57
₱2.59
-0.13
-5.02%
₱2.02
2026-07-30
₱2.57
₱2.57
₱2.47
₱2.52
₱2.57
+0.00
+0.00%
₱2.02
2026-07-31
₱2.52
₱2.79
₱2.52
₱2.71
₱2.52
+0.00
+0.00%
₱2.02
2026-08-03
₱2.70
₱3.42
₱2.70
₱3.00
₱2.71
-0.01
-0.37%
₱2.02
2026-08-04
₱2.97
₱3.00
₱2.80
₱2.86
₱3.00
-0.03
-1.00%
₱2.00
2026-08-05
₱2.86
₱2.96
₱2.81
₱2.86
₱2.86
+0.00
+0.00%
₱2.00
2026-08-06
₱2.86
₱3.02
₱2.85
₱3.00
₱2.86
+0.00
+0.00%
₱2.00
2026-08-07
₱3.09
₱3.09
₱2.90
₱2.90
₱3.00
+0.09
+3.00%
₱2.06
2026-08-10
₱2.92
₱3.02
₱2.82
₱2.92
₱2.90
+0.02
+0.69%
₱2.07
2026-08-11
₱2.92
₱3.00
₱2.90
₱2.95
₱2.92
+0.00
+0.00%
₱2.07
2026-08-12
₱2.98
₱3.03
₱2.95
₱3.00
₱2.95
+0.03
+1.02%
₱2.09
2026-08-13
₱3.09
₱3.10
₱2.98
₱3.10
₱3.00
+0.09
+3.00%
₱2.15
2026-08-14
₱3.09
₱3.12
₱2.97
₱3.03
₱3.10
-0.01
-0.32%
₱2.15
2026-08-17
₱3.00
₱3.09
₱2.95
₱3.01
₱3.03
-0.03
-0.99%
₱2.13
2026-08-18
₱2.98
₱3.01
₱2.92
₱2.98
₱3.01
-0.03
-1.00%
₱2.10
2026-08-19
₱3.00
₱3.05
₱2.96
₱3.00
₱2.98
+0.02
+0.67%
₱2.12
2026-08-20
₱3.00
₱3.27
₱3.00
₱3.20
₱3.00
+0.00
+0.00%
₱2.12
2026-08-24
₱3.26
₱3.38
₱3.20
₱3.25
₱3.20
+0.06
+1.87%
₱2.16
2026-08-25
₱3.22
₱3.36
₱3.13
₱3.30
₱3.25
-0.03
-0.92%
₱2.14
2026-08-26
₱3.22
₱3.36
₱3.13
₱3.33
₱3.30
-0.08
-2.42%
₱2.09
2026-08-27
₱3.39
₱3.39
₱3.19
₱3.26
₱3.33
+0.06
+1.80%
₱2.12
2026-08-28
₱3.26
₱3.26
₱3.00
₱3.01
₱3.26
+0.00
+0.00%
₱2.12
2026-09-01
₱3.01
₱3.13
₱3.01
₱3.01
₱3.01
+0.00
+0.00%
₱2.12
2026-09-02
₱3.01
₱3.10
₱3.01
₱3.09
₱3.01
+0.00
+0.00%
₱2.12
2026-09-03
₱3.11
₱3.12
₱3.00
₱3.01
₱3.09
+0.02
+0.65%
₱2.14
2026-09-04
₱3.00
₱3.05
₱2.99
₱3.00
₱3.01
-0.01
-0.33%
₱2.13
2026-09-07
₱3.08
₱3.08
₱3.00
₱3.00
₱3.00
+0.08
+2.67%
₱2.19
2026-09-08
₱3.00
₱3.03
₱2.96
₱2.96
₱3.00
+0.00
+0.00%
₱2.19
2026-09-09
₱2.96
₱2.99
₱2.92
₱2.93
₱2.96
+0.00
+0.00%
₱2.19
2026-09-10
₱3.02
₱3.02
₱2.92
₱3.00
₱2.93
+0.09
+3.07%
₱2.25
2026-09-11
₱3.00
₱3.06
₱2.80
₱2.96
₱3.00
+0.00
+0.00%
₱2.25
📈 Overnight % Gain Trend
Cumulative overnight-only return, indexed to 0% on 2026-06-02
(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
₱2.09
₱2.10
+0.01
+0.41%
2026-07
₱2.10
₱2.02
-0.08
-3.59%
2026-08
₱2.02
₱2.12
+0.10
+4.97%
2026-09
₱2.12
₱2.25
+0.13
+6.15%
🌙 Overnight vs. Intraday Return
Overnight (close→next open) Intraday (open→close)
From 2012-05-11 to 2026-09-04 (3,393 trading days), $1 invested
overnight-only would now be worth $3.44;
$1 invested intraday-only would be worth $0.29.
ROCK'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 ROCK, with buy/sell triggers plotted right on the chart.