What you need to know on Wall Street today

Welcome to Finance Insider, Business Insider's summary of the top stories of the past 24 hours. Sign up here to get the best of Business Insider delivered direct to your inbox. Some of the top equity-research shops in the world have seen revenue decline by 10% to 30% this year — and those are the lucky ones. Others are staring at declines of as much as 60%, according to figures from the consulting firm Oliver Wyman. Equity research revenues were widely anticipated to decline...