(Bloomberg) -- The worst two-day stretch since 2016 for Charles Schwab Corp. looks like a case of bad timing for the buyers behind a large block trade in the brokerage.Most Read from BloombergSilicon Valley Bank Swiftly Collapses After Tech Startups FleeOne Bank Folds, Another Wobbles and Wall Street Asks If It’s a CrisisWhy Is Everyone Talking About SVB? Here's Everything We Know About the Bank Right NowSVB Races to Prevent Bank Run as Funds Advise Pulling CashPeter Thiel’s Founders Fund Advise