In simple terms, the net selectivity ratio is a measure of a portfolio manager’s stock-picking skills. It looks at how well the manager can choose individual securities that outperform their benchmarks or market indexes. The ratio isolates the returns that arise purely from the active selection of securities rather than external market factors like overall economic conditions or trends within a sector.
US stocks today: S&P 500 and Nasdaq hit record closing highs as US and Iran agree to extend ceasefire
The S&P 500 and Nasdaq hit record closing highs as hopes of a US Iran ceasefire extension boosted sentiment. Investors also digested US inflation rising
May 28, 2026