It is an excellent practice to conduct a cursory analysis of all the instruments that you plan to use in your work before the start of trading. So in the book “One Good Trade”, traders of a well-known pro-trading company in America analyze 5000 stocks daily before the start of trading and during the day!
For each suitable instrument, a strategy should be drawn up, then applications should be submitted and then their execution should be monitored, after which they should go into the analysis of the result obtained. The most interesting thing is, of course, the transactions for which a loss was received – since the analysis of such transactions and your reactions to them, the inclusion of conclusions in the algorithm is the key to success.