By providing liquidity to credit line borrowers and depositors, banks are potentially exposed to simultaneous runs on their assets and liabilities. This risk became a reality when the European interbank market froze in the summer of 2007. This column discusses the risk of double-bank runs, liquidity risk management by banks and the implications for the regulation of the financial sector, in particular Basel III. In 2007, banks with a larger exposure to the interbank market suffered a spike in drawdowns on their outstanding credit lines to firms, and were effectively exposed to a ‘double-run’. Importantly, this fragility was mitigated by active pre-crisis liquidity risk management by banks.
Filippo Ippolito, José-Luis Peydró, Andrea Polo, Enrico Sette, 10 May 2016
Angus Armstrong, Philip Davis, 22 April 2016
Since the Global Crisis, a number of regulatory policies have been discussed, proposed and sometimes implemented to address shortcomings in the regulatory framework. This column presents the views of the speakers at a recent conference on whether we have reached an efficient outcome. For most of the speakers, the answer was a resounding “no”.
Di Gong, Harry Huizinga, Luc Laeven, 18 February 2016
Prior to the Global Crisis, banks could easily use off-balance sheet structures to lower their effective capitalisation rates. This column examines another way that US banks circumvented capital regulations – by maintaining minority-owned, non-consolidated subsidiaries. Had these subsidiaries been consolidated, average reported equity-to-assets ratios would have been 3.5% lower. These findings suggest that some US banks were actively misrepresenting the riskiness of their assets prior to the crisis.
Nikolaos Papanikolaou, Christian Wolff, 06 December 2015
In the years running up to the global crisis, the banking sector was marked by a high degree of leverage. Using US data, this column shows how, before the onset of the crisis, banks accumulated leverage both on and, especially, off their balance sheets. The latter activities saw an increase in maturity mismatch, raised the probability of bank runs, and increased both individual bank risk and systemic risk. These findings support the imposition of an explicit off-balance sheet leverage ratio in future regulatory frameworks.
Xavier Vives, 17 March 2015
The 2007–08 crisis revealed regulatory failures that had allowed the shadow banking system and systemic risk to grow unchecked. This column evaluates recent proposals to reform the banking industry. Although appropriate pricing of risk should make activity restrictions redundant, there may nevertheless be complementarities between these two approaches. Ring-fencing may make banking groups more easily resolvable and therefore lower the cost of imposing market discipline.
Jon Danielsson, Eva Micheler, Katja Neugebauer, Andreas Uthemann, Jean-Pierre Zigrand, 23 February 2015
The proposed EU capital markets union aims to revitalise Europe’s economy by creating efficient funding channels between providers of loanable funds and firms best placed to use them. This column argues that a successful union would deliver investment, innovation, and growth, but it depends on overcoming difficult regulatory challenges. A successful union would also change the nature of systemic risk in Europe.
Georg Ringe, Jeffrey Gordon, 28 January 2015
Bank resolution is a key pillar of the European Banking Union. This column argues that the current structure of large EU banks is not conducive to an effective and unbiased resolution procedure. The authors would require systemically important banks to reorganise into a ‘holding company’ structure, where the parent company holds unsecured term debt sufficient to cover losses at its operating financial subsidiaries. This would facilitate a ‘single point of entry’ resolution procedure, minimising the risk of creditor runs and destructive ring-fencing by national regulators.
Jon Danielsson, 18 January 2015
The Swiss central bank last week abandoned its euro exchange rate ceiling. This column argues that the fallout from the decision demonstrates the inherent weaknesses of the regulator-approved standard risk models used in financial institutions. These models under-forecast risk before the announcement and over-forecast risk after the announcement, getting it wrong in all states of the world.
Xavier Vives, 22 December 2014
Banking has recently proven much more fragile than expected. This column argues that the Basel III regulatory response overlooks the interactions between different kinds of prudential policies, and the link between prudential policy and competition policy. Capital and liquidity requirements are partially substitutable, so an increase in one requirement should generally be accompanied by a decrease in the other. Increased competitive pressure calls for tighter solvency requirements, whereas increased disclosure requirements or the introduction of public signals may require tighter liquidity requirements.
Stephen Cecchetti, 17 December 2014
Regulators forced up capital requirements after the Global Crisis – triggering fears in the banking industry of dire effects. This column – by former BIS Chief Economist Steve Cecchetti – introduces a new CEPR Policy Insight that argues that the capital increases had little impact on anything but bank profitability. Lending spreads and interest margins are nearly unchanged, while credit growth remains robust everywhere but in Europe. Perhaps the requirements should be raised further.
Stephen Cecchetti, 17 December 2014
Regulators forced up capital requirements up after the Global Crisis – triggering fears in the industry of dire effects. CEPR Policy Insight 76 – by former BIS Chief Economist Steve Cecchetti – argues that the capital increases had little impact on anything but bank profitability. Lending spreads and interest margins are nearly unchanged, while credit growth remains robust everywhere but in Europe. Perhaps the requirements should be raised further.
Christian Thimann, 17 October 2014
Having completed the regulatory framework for systemically important banks, the Financial Stability Board is turning to insurance companies. The emerging framework for insurers closely resembles that for banks, culminating in the design and calibration of capital surcharges. This column argues that the contrasting business models and balance sheet structures of insurers and banks – and the different roles of capital, leverage, and risk absorption in the two sectors – mean that the banking model of capital cannot be applied to insurance. Tools other than capital surcharges may be more appropriate to address possible concerns of systemic risk.
Jonathan Bridges, David Gregory, Mette Nielsen, Silvia Pezzini, Amar Radia, Marco Spaltro, 02 September 2014
Since the Global Crisis, support has grown for the use of time-varying capital requirements as a macroprudential policy tool. This column examines the effect of bank-specific, time-varying capital requirements in the UK between 1990 and 2011. In response to increased capital requirements, banks gradually increase their capital ratios to restore their original buffers above the regulatory minimum, reducing lending temporarily as they do so. The largest effects are on commercial real estate lending, followed by lending to other corporates and then secured lending to households.
Lev Ratnovski, Luc Laeven, Hui Tong, 31 May 2014
Large banks have grown and become more involved in market-based activities since the late 1990s. This column presents evidence that large banks receive too-big-to-fail subsidies and create systemic risk, whereas economies of scale in banking are modest. Hence, some large banks may be ‘too large’ from a social perspective. Since the optimal bank size is unknown, the best policies are capital surcharges and better bank resolution and governance.
Joseph Noss, Priscilla Toffano, 06 April 2014
The impact of tighter regulatory capital requirements during an economic upswing is a key question in macroprudential policy. This column discusses research suggesting that an increase of 15 basis points in aggregate capital ratios of banks operating in the UK is associated with a median reduction of around 1.4% in the level of lending after 16 quarters. The impact on quarterly GDP growth is statistically insignificant, a result that is consistent with firms substituting away from bank credit and towards that supplied via bond markets.
Jens Hagendorff, Francesco Vallascas, 16 December 2013
Recent research shows that capital requirements are only loosely related to a market measure of bank portfolio risk. Changes introduced under Basel II meant that banks with the riskiest portfolios were particularly likely to hold insufficient capital. Banks that relied on government support during the crisis appeared to be well-capitalised beforehand, suggesting they engaged in capital arbitrage. Until the regulatory concept of risk better reflects actual risk, the proposed increases in risk-weighted capital requirements under Basel III will have little effect.
Jon Danielsson, 28 November 2013
Basel III is coming into focus. The fundamental logic of the regulatory changes seems sensible, but the devil is in the detail – empirical implementation. This column discusses a detailed quantitative study, incorporating analytical calculations, Monte Carlo simulations and results from observed data. It concludes that the Basel Committee has taken three and a half steps backwards and half a step forward. If implemented, the framework is likely to lead to less robust risk forecasts than current methodologies.
Clemens Bonner, Sylvester Eijffinger, 14 October 2013
Liquidity requirements like the Basel III Liquidity Coverage Ratio are aimed at reducing banks’ reliance on short-term funding. This may have implications for the implementation of monetary policy, which usually operates through short-term interbank interest rates. This column looks at how banks reacted to the Dutch quantitative liquidity requirement. The authors conclude that liquidity requirements will only reduce overnight interest rates if they cause an aggregate liquidity shortage.
Lev Ratnovski, 28 July 2013
After much negotiation, Basel III regulations set capital requirements to be between 8% and 12%. This column suggests this may not be enough. It looks at how much capital banks would need to fully absorb asset shocks of the size seen in OECD countries over the last 50 years. The answer is 18% risk-weighted capital, corresponding to 9% leverage. This benchmark is highly conservative, so the true 'optimal' bank capital may be lower.
Mike Mariathasan, Ouarda Merrouche, 29 June 2013
The regulation of bank capital has recently come under renewed scrutiny. This column argues that the way we implement capital regulation needs to be reconsidered because banks under-report risk, thereby escaping government intervention and maintaining market access. One possible way forward, something already implemented under Basel III, is to ask banks to satisfy a capital requirement relative to total (rather than risk-weighted) assets. Overall, simple, transparent, workable rules are what we should be aiming for.