Yesterday was a session for the ages. At least for Commonwealth Bank of Australia (ASX: CBA) shares.

The ASX’s largest bank, and, until recently, largest stock, was hit with what was possibly its worst one-day fall in history yesterday. The bank ended trading on Tuesday at $171.57 a share. But CBA had a horror show of a day yesterday, and ended up finishing the session at just $153.67 a share. That was a fall worth a whopping 10.43%. That’s pretty significant when you are the largest stock on the index (well, after yesterday’s performance, CBA lost its crown to BHP Group Ltd (ASX: BHP)).

This drop was enough to drag the entire S&P/ASX 200 Index (ASX: JXO) down yesterday, a pretty remarkable feat when almost every other corner of the…