One of the oldest, in fact I think the oldest money market fund, the progenitor of the whole industry, a fund called the Reserve Primary Fund—Primary had meaningful exposure to Lehman paper. Something like 2 percent of that fund was in Lehman paper. When Lehman went under, people who had shares of the Reserve Primary Fund, especially institutional investors who were very much on top of what Primary’s holdings were, started to ask for redemptions from that fund. So that led to a run on that money market fund.

As a result, Primary “broke the buck.” They had to mark down their Lehman exposure. The holding, the value of one share of the Primary Reserve Fund, was no longer $1—money market funds always try to maintain the value of one share at $1. And that just caused people to—I think the technical term is “lose their shit.” People just lost their shit. You thought you had money; now you don’t have money. And you don’t know how much you have in Reserve Primary Fund, really…“We think people will recover 98 cents on the dollar, we don’t know how long it will take to get people back their money,” and suddenly all these money market funds fell under suspicion. [...]