This screen finds stocks with a 52-week Relative Strength above 90, meaning their price gain over the last 52 weeks ranks in the top 10% of all stocks on the same exchange, which marks them as the strongest leaders. Relative Strength is a percentile ranking: a reading of 90 means the stock outperformed 90% 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.