“…Our paper is also related to studies of the collateral market of safe assets, including Duffie (1996), Duffie, Garleanu, and Pedersen (2002), Gorton and Metrick (2012), Krishnamurthy, Nagel, and Orlov (2014), Bartolini, Hilton, Sundaresan, andTonetti (2011), Hu, Pan, andWang (2019), Song and Zhu (2019), and Lenel, Piazzesi, and Schneider (2019).…”