The collapse of the auction-rate securities market is a largely forgotten part of the financial crisis, a disaster that was soon overwhelmed by bigger ones — except for the investors who were caught up in it.

It’s been four decades since the go-go years of the late 1960s, when hot mutual funds captured the imagination of investors by reporting performance that was too good to be true. It’s been so long that Bank of America seems to have forgotten what happened.

Much better-than-expected jobs numbers drew little more than a collective yawn from Wall Street on Friday, and some market experts think that could actually be a good thing.