Quote from humblepie:
I lost faith in candlesticks one day when I decided to do a simple study that almost anyone could do on their own.
I downloaded a large amount of historical daily data for various equities from Yahoo! Finance for the purpose of examining the Bullish Engulfing Pattern, specifically. I wrote a program to run through the data. It extracted all bullish engulfing patterns that were preceded by 3 days that closed at lower lows (a downtrend, albeit brief). The program wrote the data into a spreadsheet, including OHLC data for the day that immediately followed the engulfing pattern. That day would be more likely to demonstrate a turnaround, so I thought.
In the spreadsheet, I selected my data range and eagerly drew my chart. I expected that I would certainly see that the day immediately following the bullish engulfing pattern would show a tendency to close higher. I was breathing heavily as I dragged my cursor across the screen--the excitement was palpable. Finally my chart plotted itself.
Never in my life have I seen a more perfectly drawn bell curve, centered precisely at 0. The closing price of the day following the bullish engulfing pattern appeared to follow a perfectly random distribution, not showing any bias one way or the other.
I suppose one could argue with my methods, specifically the way I defined a downtrend. But the disappointment at that point was great enough that I never repeated the experiment.
Humbly yours,