Anecdotally, I had a friend at one of these places in Manhattan, trying to make it out of provisional status (or whatever the next level up on the ladder was).

Anecdotally, I had a friend at one of these places in Manhattan, trying to make it out of provisional status (or whatever the next level up on the ladder was). He pulled 15 hours (9am to midnight) Monday to Friday, and 8-10 hours on Sat. His employer was gracious enough to allow them Sundays off, and call it a day as early as 6 pm on Fri depending on workload. ;) So that was ~65 to 70 hours a week, and I thought it was an insane workload. He wound up leaving after year to take a "normal" finance job in corporate America in another state.