Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Is there a candlestick pattern that guarantees any kind of future profit?
By definition, there are no guaranteed profits. There are sometimes arbitrage opportunities, which are more accessible to some investors than others. In this case, I'm not referring to HFT as that is covered elsewhere on this site already.  At certain times, in certain equity markets, candlestick charts were used for profitable trading, though more for trades set up for weeks or months, not day trading. I am referring specifically to Nikkei 225 equities, in the 1980's and 1990's. I don't know why it was effective, and it hasn't worked for me since then. I recommend reading and heeding this answer. Some people DO use technical analysis (see "TA is not..." section) as a primary trading strategy, but they are not going to divulge their methods, not here nor anywhere else.