The "4% rule" has guided retirement for decades. Now its inventor says it's outdated-and the new 4.7% rule could reshape how ...

Mila Koumpilova, Chalkbeat, and Jennifer Smith Richards, ProPublica ProPublica is a nonprofit newsroom that investigates ...

Research on statistical arbitrage in U.S. equities (1997–2007) shows that PCA-based strategies achieved average annual Sharpe ...