Gabriel Sterne

Funding liquidity risk in a quantitative model of systemic stability

We demonstrate how the introduction of liability-side feedbacks affects the properties of a quantitative model of systemic risk. The model is known as RAMSI and is still in its development phase. It is based on detailed balance sheets for UK banks and encompasses macro-credit risk, interest and non-interest income risk, network interactions, and feedback effects. Funding liquidity risk is introduced by allowing for rating downgrades and incorporating a simple framework in which concerns over solvency, funding profiles and confidence may trigger the outright closure of funding markets to particular institutions. In presenting results, we focus on aggregate distributions and analysis of a scenario in which large losses at some banks can be exacerbated by liability-side feedbacks, leading to system-wide instability.

Does monetary policy transparency reduce disinflation costs

We examine the relationship between central bank transparency and the costs of disinflation. We provide a model where disinflation efforts imply a higher sacrifice ratio when the public is not fully convinced about the central bank’s resolve to reduce inflation and show that information dissemination by the central bank can remedy this problem. To assess the empirical implications we estimate sacrifice ratios based on individual estimates of Phillips curves in 21 OECD economies. Using transparency indices pertaining to both the detail with which central banks publish forecasts and the means by which policy decisions are explained, we find that a higher degree of central bank transparency is associated with lower sacrifice ratios. This result is robust to alternative estimation methods and periods considered.

Wealth and Consumption: An Assessment of the International Evidence

The main objective of this paper is to offer a critique of the existing literature on the link between wealth and consumption, as captured by the long-run marginal propensity to consume from financial wealth (mpcw). The international evidence suggests that the mpcw varies considerably across countries, and new estimates are presented, based on structural vector autoregressions (VARs) for eleven OECD countries, which tend to confirm this finding. It is argued that there is little theoretical rationale for a wide cross-country dispersion of the mpcw, and that the cross-country differences in empirical estimates may in fact reflect difficulties in the measurement of wealth across countries and a failure to account for the shocks causing changes in both consumption and wealth. Using a suitable panel technique, it is found that the hypothesis of a common long-run mpcw across countries cannot be rejected consistently, and a plausible estimate is obtained for the cross-section of eleven OECD countries. This estimate is a little over 6%, broadly consistent with estimates used in a wide range of policy models.

Liquidity Risk, Cash-Flow Constraints and Systemic Feedbacks

The endogenous evolution of liquidity risk is a key driver of financial crises. This paper models liquidity feedbacks in a quantitative model of systemic risk. The model incorporates a number of channels important in the current financial crisis. As banks lose access to longer-term funding markets, their liabilities become increasingly short term, further undermining confidence. Stressed banks’ defensive actions include liquidity hoarding and asset fire sales. This behaviour can trigger funding problems at other banks and may ultimately cause them to fail. In presenting results, we analyse scenarios in which these channels of contagion operate, and conduct illustrative simulations to show how liquidity feedbacks may markedly amplify distress.

The Role of ICT in the Global Investment Cycle

Most macroeconomic forecasters underestimated global investment during the late 1990s. One potential reason was that the models they were using were insufficiently disaggregated. In this paper, an empirical model is estimated whose out-of-sample forecasts largely predicted the global investment boom of the late 1990s. The main factor behind the improved model performance is the distinction between investment in ICT assets and investment in other assets, using disaggregated investment data provided by the OECD. In line with previous studies on US and UK investment performance, ICT investment is estimated to be much more responsive to changes in the real user cost of capital. In particular, panel and seemingly unrelated regression (SUR) estimates suggest very strong relative price effects on ICT investment for all G7 countries and Australia. The data also allow an examination of the effects of possible deflator mismeasurement; but within our framework, the measurement of investment using harmonised, rather than national, deflators is not found to have a material impact on forecasting performance.

Inflation Targets as a Stabilization Device

In a New Keynesian macroeconomic model under credible commitment, price level targeting dominates inflation targeting. But with sufficient inflation aversion the inflation-targeting central bank can produce quantitatively similar results to one targeting the price level. The current degree of inflation aversion demonstrated by the Bank of England may be sufficient to reap the benefits of price level targeting. Copyright 2002 by Blackwell Publishers Ltd and The Victoria University of Manchester