This screen finds stocks with a 52-week Relative Strength above 80, meaning their price gain over the last 52 weeks ranks in the top 20% of all stocks on the same exchange, which marks them as strong leaders. Relative Strength is a percentile ranking: a reading of 80 means the stock outperformed 80% of its peers. This is a one-year ranking that captures long-term leaders, the basis of classic 12-month momentum investing. Do not confuse it with the RSI oscillator.