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
2026-05-28
₱0.8500
₱0.8500
₱0.7900
₱0.8300
₱0.8500
+0.00
+0.00%
₱0.8500
2026-05-29
₱0.8500
₱0.8500
₱0.8300
₱0.8300
₱0.8300
+0.02
+2.41%
₱0.8705
2026-06-01
₱0.8300
₱0.8300
₱0.7900
₱0.7900
₱0.8300
+0.00
+0.00%
₱0.8705
2026-06-02
₱0.7900
₱0.7900
₱0.7800
₱0.7800
₱0.7900
+0.00
+0.00%
₱0.8705
2026-06-03
₱0.7400
₱0.7400
₱0.7400
₱0.7400
₱0.7800
-0.04
-5.13%
₱0.8258
2026-06-04
₱0.7500
₱0.7500
₱0.7200
₱0.7200
₱0.7400
+0.01
+1.35%
₱0.8370
2026-06-05
₱0.7200
₱0.7200
₱0.7200
₱0.7200
₱0.7200
+0.00
+0.00%
₱0.8370
2026-06-08
₱0.7200
₱0.7200
₱0.7100
₱0.7100
₱0.7200
+0.00
+0.00%
₱0.8370
2026-06-09
₱0.7300
₱0.7300
₱0.7300
₱0.7300
₱0.7100
+0.02
+2.82%
₱0.8606
2026-06-10
₱0.8000
₱0.8000
₱0.7400
₱0.7400
₱0.7300
+0.07
+9.59%
₱0.9431
2026-06-15
₱0.8100
₱0.8200
₱0.7800
₱0.7800
₱0.7400
+0.07
+9.46%
₱1.03
2026-06-18
₱0.7000
₱0.7500
₱0.7000
₱0.7500
₱0.7800
-0.08
-10.26%
₱0.9264
2026-06-19
₱0.7500
₱0.7500
₱0.7500
₱0.7500
₱0.7500
+0.00
+0.00%
₱0.9264
2026-06-24
₱0.7000
₱0.7000
₱0.7000
₱0.7000
₱0.7500
-0.05
-6.67%
₱0.8647
2026-06-25
₱0.7000
₱0.7000
₱0.7000
₱0.7000
₱0.7000
+0.00
+0.00%
₱0.8647
2026-06-26
₱0.7000
₱0.8000
₱0.7000
₱0.8000
₱0.7000
+0.00
+0.00%
₱0.8647
2026-06-29
₱0.8100
₱0.8100
₱0.7300
₱0.7300
₱0.8000
+0.01
+1.25%
₱0.8755
2026-06-30
₱0.7300
₱0.7300
₱0.7300
₱0.7300
₱0.7300
+0.00
+0.00%
₱0.8755
2026-07-01
₱0.7100
₱0.7100
₱0.7100
₱0.7100
₱0.7300
-0.02
-2.74%
₱0.8515
2026-07-02
₱0.7100
₱0.7100
₱0.7100
₱0.7100
₱0.7100
+0.00
+0.00%
₱0.8515
2026-07-03
₱0.7200
₱0.7200
₱0.7100
₱0.7100
₱0.7100
+0.01
+1.41%
₱0.8635
2026-07-07
₱0.7300
₱0.7300
₱0.7300
₱0.7300
₱0.7100
+0.02
+2.82%
₱0.8878
2026-07-08
₱0.7300
₱0.7300
₱0.7300
₱0.7300
₱0.7300
+0.00
+0.00%
₱0.8878
2026-07-17
₱0.8000
₱0.8000
₱0.7700
₱0.7700
₱0.7300
+0.07
+9.59%
₱0.9729
2026-07-22
₱0.8100
₱0.8100
₱0.7700
₱0.7700
₱0.7700
+0.04
+5.19%
₱1.02
2026-07-23
₱0.8100
₱0.8100
₱0.8100
₱0.8100
₱0.7700
+0.04
+5.19%
₱1.08
2026-07-24
₱0.8200
₱0.8600
₱0.8200
₱0.8500
₱0.8100
+0.01
+1.23%
₱1.09
2026-07-27
₱0.8500
₱0.8500
₱0.8500
₱0.8500
₱0.8500
+0.00
+0.00%
₱1.09
2026-07-28
₱0.7900
₱0.8600
₱0.7900
₱0.8500
₱0.8500
-0.06
-7.06%
₱1.01
2026-07-29
₱0.8500
₱0.8500
₱0.8500
₱0.8500
₱0.8500
+0.00
+0.00%
₱1.01
2026-07-30
₱0.8200
₱0.8500
₱0.8200
₱0.8500
₱0.8500
-0.03
-3.53%
₱0.9773
2026-07-31
₱0.8500
₱0.8500
₱0.8500
₱0.8500
₱0.8500
+0.00
+0.00%
₱0.9773
2026-08-03
₱0.8500
₱0.8500
₱0.8500
₱0.8500
₱0.8500
+0.00
+0.00%
₱0.9773
2026-08-05
₱0.8500
₱0.8500
₱0.8500
₱0.8500
₱0.8500
+0.00
+0.00%
₱0.9773
2026-08-06
₱0.8500
₱0.8500
₱0.8500
₱0.8500
₱0.8500
+0.00
+0.00%
₱0.9773
2026-08-07
₱0.8500
₱0.8500
₱0.8500
₱0.8500
₱0.8500
+0.00
+0.00%
₱0.9773
2026-08-10
₱0.7800
₱0.8400
₱0.7700
₱0.7700
₱0.8500
-0.07
-8.24%
₱0.8968
2026-08-11
₱0.8200
₱0.8200
₱0.8200
₱0.8200
₱0.7700
+0.05
+6.49%
₱0.9550
2026-08-12
₱0.8300
₱0.8600
₱0.7600
₱0.8600
₱0.8200
+0.01
+1.22%
₱0.9667
2026-08-13
₱0.8500
₱0.9600
₱0.8500
₱0.9600
₱0.8600
-0.01
-1.16%
₱0.9554
2026-08-14
₱1.00
₱1.09
₱1.00
₱1.07
₱0.9600
+0.04
+4.17%
₱0.9952
2026-08-17
₱1.07
₱1.11
₱1.07
₱1.11
₱1.07
+0.00
+0.00%
₱0.9952
2026-08-18
₱1.11
₱1.14
₱1.11
₱1.14
₱1.11
+0.00
+0.00%
₱0.9952
2026-08-19
₱1.10
₱1.10
₱1.10
₱1.10
₱1.14
-0.04
-3.51%
₱0.9603
2026-08-20
₱1.09
₱1.09
₱1.09
₱1.09
₱1.10
-0.01
-0.91%
₱0.9516
2026-08-24
₱1.09
₱1.09
₱0.9800
₱1.06
₱1.09
+0.00
+0.00%
₱0.9516
2026-08-25
₱1.06
₱1.06
₱1.05
₱1.05
₱1.06
+0.00
+0.00%
₱0.9516
2026-08-26
₱1.05
₱1.24
₱1.05
₱1.24
₱1.05
+0.00
+0.00%
₱0.9516
2026-08-27
₱1.25
₱1.29
₱1.20
₱1.29
₱1.24
+0.01
+0.81%
₱0.9592
2026-08-28
₱1.29
₱1.30
₱1.29
₱1.29
₱1.29
+0.00
+0.00%
₱0.9592
2026-09-01
₱1.28
₱1.28
₱1.28
₱1.28
₱1.29
-0.01
-0.78%
₱0.9518
2026-09-02
₱1.29
₱1.29
₱1.29
₱1.29
₱1.28
+0.01
+0.78%
₱0.9592
2026-09-03
₱1.27
₱1.27
₱1.27
₱1.27
₱1.29
-0.02
-1.55%
₱0.9444
2026-09-04
₱1.11
₱1.20
₱1.02
₱1.14
₱1.27
-0.16
-12.60%
₱0.8254
2026-09-07
₱1.14
₱1.14
₱1.14
₱1.14
₱1.14
+0.00
+0.00%
₱0.8254
2026-09-08
₱1.13
₱1.13
₱1.13
₱1.13
₱1.14
-0.01
-0.88%
₱0.8182
2026-09-09
₱1.13
₱1.13
₱1.13
₱1.13
₱1.13
+0.00
+0.00%
₱0.8182
2026-09-10
₱1.05
₱1.05
₱1.03
₱1.03
₱1.13
-0.08
-7.08%
₱0.7602
2026-09-11
₱1.03
₱1.19
₱0.9800
₱1.19
₱1.03
+0.00
+0.00%
₱0.7602
📈 Overnight % Gain Trend
Cumulative overnight-only return, indexed to 0% on 2026-05-26
(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 %
2026-05
₱0.8500
₱0.8705
+0.02
+2.41%
2026-06
₱0.8705
₱0.8755
+0.00
+0.57%
2026-07
₱0.8755
₱0.9773
+0.10
+11.63%
2026-08
₱0.9773
₱0.9592
-0.02
-1.85%
2026-09
₱0.9592
₱0.7602
-0.20
-20.75%
🌙 Overnight vs. Intraday Return
Overnight (close→next open) Intraday (open→close)
From 1995-09-12 to 2026-09-04 (5,011 trading days), $1 invested
overnight-only would now be worth $1.00;
$1 invested intraday-only would be worth $778,105.99.
PRIM's historical return has leaned mostly on the regular trading session (intraday).
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 PRIM, with buy/sell triggers plotted right on the chart.