What i meant and what i also personally do is check the stocks in that list on charts (i use zerodha so i study the chart of that stock) with indicators in place like EMA 5, 20, MACD and RSI and try and see if it is going up and will shoot up or if its going down and will shoot down etc.... I also try and follow candle sticks in the charts to see for any dojis and trend reversals etc or anything else the candlesticks may show... with it i also take a few minutes to see the trend in Heiken Ashi...
Hope the above is clear.
regards
Greg