How can you tell whether a BOLL trend reversal is valid? In this $FIL 4-hour case:
✔ The closing price was below the lower band at 0.885
✔ The band width began expanding from 4.4%
✔ Trading volume increased at the same time
✔ The subsequent rebound failed to break above the middle band at 0.9071
The 4-hour timeframe is sensitive, but it can also be noisy, so it's best to refer to the daily chart.
#FIL
✔ The closing price was below the lower band at 0.885
✔ The band width began expanding from 4.4%
✔ Trading volume increased at the same time
✔ The subsequent rebound failed to break above the middle band at 0.9071
The 4-hour timeframe is sensitive, but it can also be noisy, so it's best to refer to the daily chart.
#FIL