The Disappearing Overnight Drift
In a 2021 Liberty Street Economics post, we documented the “overnight drift”—a large, persistent return to holding U.S. equity futures in the narrow window between 2:00 and 3:00 a.m. Eastern time, when European equity markets open. Five additional years of data later, that pattern appears to have faded: the 2:00–3:00 window that previously generated roughly 3.7 percent per annum has averaged close to zero since 2021. In this post, we revisit the overnight drift in light of the post-publication sample and use our inventory-risk framework to ask which of three observable channels—the dispersion of closing order imbalances, the level of return variance, or the risk-bearing capacity of liquidity providers—accounts for the change.
Liquidity Fades as Treasuries Age
More than $30 trillion U.S. Treasury debt is outstanding. Less than 4 percent of this amount, which is associated with the most recently issued Treasuries, called on-the-run securities, accounts for 65 percent of average daily trading volume. The remaining portion of the amount outstanding is accounted for by seasoned issues that have been replaced by newer benchmarks, which are referred to as off-the-run securities. In this post, we review the key results in our paper that uses transaction-level Treasury TRACE data to study how trading activity and liquidity evolve as securities move from on-the-run to off-the-run. We show three main patterns. First, off-the-run notes and bonds rely much more on dealer-to-customer intermediation than benchmark securities. Second, trading activity falls sharply and transaction costs increase as securities age. Third, securities that are cheapest to deliver into Treasury futures are an important exception: they trade more actively than other off-the-run bonds of similar age.
Bank Failures: The Roles of Solvency and Liquidity
Do banks fail because of runs or because they become insolvent? Answering this question is central to understanding financial crises and designing effective financial stability policies. Long-run historical evidence reveals that the root cause of bank failures is usually insolvency. The importance of bank runs is somewhat overstated. Runs matter, but in most cases they trigger or accelerate failure at already weak banks, rather than cause otherwise sound banks to fail.
The Rise in Deposit Flightiness and Its Implications for Financial Stability
Deposits are often perceived as a stable funding source for banks. However, the risk of deposits rapidly leaving banks—known as deposit flightiness—has come under increased scrutiny following the failures of Silicon Valley Bank and other regional banks in March 2023. In a new paper, we show that deposit flightiness is not constant over time. In particular, flightiness reached historic highs after expansions in bank reserves associated with rounds of quantitative easing (QE). We argue that this elevated deposit flightiness may amplify the banking sector’s response to subsequent monetary policy rate hikes, highlighting a link between the Federal Reserve’s balance sheet and conventional monetary policy.
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