Scott Rubner, Citadel Securities' new head of equity and equity derivatives strategy, expects "robust" retail trading flows through summer, notably in June and July, before dropping off in September. ...

Stock futures wavered, with tech-heavy Nasdaq-100 futures edging higher. Jittery markets are swelling trading revenue and profit, prompting banks to put more money to work on Wall Street.

Massachusetts Sen. Elizabeth Warren, the top Democrat on the Senate Banking Committee, offered support Wednesday for Federal Reserve Chair Jerome Powell, whose policies she frequently criticizes.