Stifel Financial Earns Credit UpgradeGlobe Newswire • about 1 month agoS&P Raises Long-Term Rating to 'BBB'ST. LOUIS, April 02, 2024 (GLOBE NEWSWIRE) -- Stifel Financial Corp. (NYSE: SF) today announced that S&P Global Ratings (S&P) has raised its long-term rating on...