Rising Sophomore Recruiting Timeline

Which firms are still hiring for their sophomore analyst classes, and have spots obtainable either through direct applications or by networking to get interviews?

I assume top-tier BBs have already filled up their classes, but I've been talking with some alums at firms like BMO and HSBC and was wondering if I could still land a role there for the summer after sophomore year if I play my cards right? Have those firms had their superdays yet?

Thanks in advance!