Why the Federal Reserve had to step in again to sop runs on money market mutual funds and keep the financial system from imploding.Topics covered include:What are the differences between shocks and vulnerabilitiesWhat are the four main vulnerabilities the Federal Reserve monitorsHow deleveraging and demands for liquidity lead to market stressesWhat are the types of money market funds and how were they impacted by the Covid 19 shockHow was Treasury bond trading impacted by the Covid shockWhy the Federal Reserve stepped in to stop the market contagion from spreadingWhat are the downsides to central bank interventionsWhat individual investors can do to protect against future shocksThanks to Mint Mobile and Truebill for sponsoring the episode.Show NotesPresident’s Working Group on Financial Markets Releases Report on Money Market Funds—U.S. Department of the TreasuryReport of the President’s Working Group on Financial Markets: Overview of Recent Events and Potential Reform Options for Money Market Funds, December 2020—U.S. Department of the TreasuryU.S. Credit Markets Interconnectedness and the Effects of the COVID-19 Economic Shock by S.P. Kothari, Dalia Blass, Alan Cohen, Sumit Rajpal, and SEC Research Staff—U.S. Securities and Exchange CommissionFinancial Stability Report November 2020—Board of Governors of the Federal Reserve SystemHow Vanguard Overhauled a Prime Money Fund by Bernice Napach—ThinkAdvisorOvernight Index Swap by James Chen—InvestopediaCash Viewpoint: What do Variable Rate Demand Notes do for Your Money Market Fund—Invesco