Panacea,Pandora's box,or placebo: Feedback in bank mortgage-backed security holdings and fair value accounting

We examine the relation between bank holdings of mortgage-backed securities (MBS) and MBS prices. Theory suggests feedback between MBS holdings and underlying asset markets can be aggravated by mark-to-market accounting. We measure feedback by the relation between asset returns and the changes in bank MBS holdings. Consistent with the existence of feedback effects related to mark-to-market, we find that for banks with high MBS, more nonperforming loans, and lower total capital ratio, changes in bank MBS positions are positively associated with changes in MBS prices and that this relation is reduced after the April 2009 mark-to-market rule clarification. To assess the effect of feedback on shareholder value, we test whether the stock-price response of banks to the announcement of the mark-to-market accounting rule clarification is associated with the intensity of feedback behavior. We find that the stock market reaction to the rule change is more positive for banks with more MBS, higher nonperforming loans and higher pre-rule-change feedback. We also find positive bond-price reactions to the rule change. Overall, our results suggest feedback related to mark-to-market accounting had a measurable effect on shareholder value.     

Bank systemic risk and corporate investment: Evidence from the US

In this paper, we develop a simple two-period model in which a bank’s investment (e.g., loans) is influenced by short-term financing and a probability of a financial crisis. When banks ex ante expect to be bailed out during financial crises, they do not necessarily internalize the cost of financial crises and invest more. We argue that the level of systemic risk in the banking sector is largely driven by (1) the way in which banks finance their investment (e.g., loans) using more short-term debt and/or (2) the increase in asset commonality amongst banks. We use three measures that arguably capture two dimensions of “bank systemic risk”, namely, (1) bank funding maturity and (2) bank asset commonality, to empirically test whether bank systemic risk has a positive effect on corporate investment. We document that in a sample of publicly listed firms in the United States over the period 1991–2013, bank systemic risk is positively associated with the firm-level investment ratio after controlling for a large set of country- and firm-level variables. In addition, we show that a firm's leverage strengthens the positive effect of bank systemic risk on corporate investment, suggesting that more financially constrained firms experience a larger effect of bank systemic risk on corporate investment than less financially constrained firms.     

The syndicate structure of securitized corporate loans

Securitized loans have lower lead bank shares, but larger shares held by non-CLO (collateralized loan obligation) institutional investors than nonsecuritized loans. The result can largely be explained by their degree of information asymmetry and credit risk. We find that lead banks increase their holdings after a nonsecuritized loan becomes securitized, but they do not reduce financial exposure to securitized facilities during the boom of the CLO market. Furthermore, we find that securitized loans do not perform differently from similar nonsecuritized loans. We conclude that differences in syndicate structure are likely shaped by participants’ investment preference rather than a manifestation of adverse selection.     

The role of banks in the governance of nonfinancial firms: Evidence from Europe

The aim of our research is to investigate the important role of banks in the governance of companies listed in the Euronext 100 index. Primarily, this research seeks to examine the impact of a bank’s presence within a firm, as a creditor or shareholder, on firm performance, as well as the motivations of banks to acquire holdings, and whether the presence of a bank as a shareholder of a firm facilitates its access to bank loans. Empirical analyses are conducted with a sample of 86 nonfinancial institutions listed in the Euronext 100 index over the period 2008–2013 using the three-stage least squares method. The study shows, first, that the presence of a bank within a firm, as a creditor or shareholder, is positively related to firm performance. Moreover, the firm’s performance is an important determinant of the presence of bank shareholding. Finally, the presence of a bank as a shareholder of a firm does not facilitate its access to bank loans.     

Systemic Risk Contributions

We adopt a systemic risk indicator measured by the price of insurance against systemic financial distress and assess individual banks’ marginal contributions to the systemic risk. The methodology is applied using publicly available data to the 19 bank holding companies covered by the U.S. Supervisory Capital Assessment Program (SCAP), with the systemic risk indicator peaking around $1.1 trillion in March 2009. Our systemic risk contribution measure shows interesting similarity to and divergence from the SCAP loss estimates under stress test scenarios. In general, we find that a bank’s contribution to the systemic risk is roughly linear in its default probability but highly nonlinear with respect to institution size and asset correlation.     

Herding behaviour in the Australian loan market and its impact on bank loan quality

We examine the effect of herding behaviour on the credit quality of bank loans in Australia. We find that bank herding varies with different types of loans. It tends to be more prevalent in owner‐occupied housing loans and credit cards than other types of loans. During the global financial crisis period, herding in owner‐occupied housing loans was most pronounced due to the flight‐to‐quality phenomenon in the housing sector. Furthermore, we find that the big four banks tend to herd more than smaller and regional banks. Bank herding behaviour is countercyclical, as it is negatively related to real GDP growth and the cost of funding but is positively related to market risk. Regulatory capital requirements may also encourage herding as banks are required to hold less risk‐weighted capital for residential loans. Most importantly, bank herding is related to higher impaired assets and therefore lower loan quality. Our findings may have implications for policymakers and bank regulators.     

Systemic risk and bank consolidation: International evidence

This paper analyzes the systemic risk effects of bank mergers to test the “concentration-fragility” hypothesis. We use the marginal expected shortfall as well as the lower tail dependence between a bank’s stock returns and a relevant bank sector index to capture the merger-related change in an acquirer’s contribution to systemic risk. In our empirical analysis of a dataset of international domestic and cross-border mergers, we find clear evidence for a significant increase in the merging banks’, the combined banks’ as well as their competitors’ contribution to systemic risk following mergers, thus confirming the “concentration-fragility” hypothesis.     

Unstable banking

We propose a theory of financial intermediaries operating in markets influenced by investor sentiment. In our model, banks make, securitize, distribute, and trade loans, or they hold cash. They also borrow money, using their security holdings as collateral. Banks maximize profits, and there are no conflicts of interest between bank shareholders and creditors. The theory predicts that bank credit and real investment will be volatile when market prices of loans are volatile, but it also points to the instability of banks, especially leveraged banks, participating in markets. Profit-maximizing behavior by banks creates systemic risk.     

Bank loans during the 2008 quantitative easing

We examine the effect of quantitative easing on the supply of bank loans. During the Fed’s quantitative easing programs, lending banks reduced relatively more loan spreads, offered longer loan maturities, provided larger loans, and loosened more covenants for firms whose long-term bond ratings were below BBB and were lower than those with investment-grade bond ratings. Furthermore, we find that new bank loans in this period were associated with a reduction in a firm’s value and an increase in default risk. These results indicate that banks took greater risk during the 2008 quantitative easing by relaxing lending standards to relatively riskier borrowers.     

Global retail lending in the aftermath of the US financial crisis: Distinguishing between supply and demand effects

This paper examines the broader effects of the US financial crisis on global lending to retail customers. In particular we examine retail bank lending in Germany using a unique data set of German savings banks during the period 2006 through 2008 for which we have the universe of loan applications and loans granted. Our experimental setting allows us to distinguish between savings banks affected by the US financial crisis through their holdings in Landesbanken with substantial subprime exposure and unaffected savings banks. The data enable us to distinguish between demand and supply side effects of bank lending and find that the US financial crisis induced a contraction in the supply of retail lending in Germany. While demand for loans goes down, it is not substantially different for the affected and nonaffected banks. More important, we find evidence of a significant supply side effect in that the affected banks reject substantially more loan applications than nonaffected banks. This result is particularly strong for smaller and more liquidity-constrained banks as well as for mortgage as compared with consumer loans. We also find that bank-depositor relationships help mitigate these supply side effects.     

Discretionary Loan Loss Provisions and Systemic Risk in the Banking Industry

This study examines the relation between earnings management through discretionary loan loss provisions (LLPs) and systemic risk in the U. S. banking sector using a large sample of commercial banks from 1996 to 2009. We find that earnings management increases a bank's contribution to systemic crash risk and systemic distress risk, consistent with the notion that earnings management increases information opacity, facilitates bad news hoarding, co‐moves with macroeconomic conditions, and exhibits cross‐sectional correlation and herding in earnings management. However, the effect of earnings management through discretionary LLPs on systemic risk disappears during the crisis period, consistent with weakened earnings management in crisis times. We also find that the same effect strengthens with bank uncertainty and homogenous loans, and weakens in the post‐SOX period, and when banks are audited by Big 4 auditors.     

Drivers of systemic risk: Do national and European perspectives differ?

With the establishment of the Banking Union, the European Central Bank has been granted the power to impose stricter regulations than the national regulator if systemic risks are not adequately addressed at the national level. We ask whether there is a cross-border externality in the sense that a bank’s systemic risk differs when applying a national versus a European perspective. On average, banks’ contribution to systemic risk is similar at the two regional levels, and so is the ranking of banks. Generally, larger banks and banks with a lower share of loans are more systemically important. The effects of these variables are qualitatively but not quantitatively similar at the national versus the European level.     

债券投资如何影响商业银行系统性风险?--基于系统性风险分解的视角

作为我国商业银行最重要的非信贷资产业务,债券投资如何影响银行系统性风险?理论分析表明,债券投资对系统性风险的综合影响取决于其个体风险分散效应和系统关联性提升效应孰强孰弱。在此基础上,本文应用2008-2018年25家上市银行季度数据,实证检验债券投资对系统性风险的影响。结果发现,债券投资同时具有降低银行个体风险和增加银行个体与系统关联性的效果。进一步分析表明,一方面,对于规模较小的商业银行而言,债券投资的个体风险分散效应较弱、系统关联性提升效应较强;另一方面,商业银行持有较多以公允价值计量的债券时,债券投资的系统关联性提升效应较强。本文研究对于监管部门协调微观审慎和宏观审慎监管、防范债券投资业务引致系统性风险具有重要的启示意义。     

The systemic risk of European banks during the financial and sovereign debt crises

European banks became a source of risk to global financial markets during the financial crisis and attention to the European banking sector increased during the sovereign debt crisis. To measure the systemic risk of European banks, we calculate a distress insurance premium (DIP), which integrates the characteristics of bank size, probability of default, and correlation. Based on this measure, the systemic risk of European banks reached its height in late 2011 around €500 billion. We find that this was largely due to sovereign default risk. The DIP methodology is also used to measure the systemic contribution of individual banks. This approach identifies the large systemically important European banks, but Italian and Spanish banks as a group notably increased in systemic importance during the sample period. Bank-specific fundamentals like capital-asset ratios predict the one-year-ahead systemic risk contributions.     

Stock price fragility and the cost of bank loans

This study examines whether the flow volatility experienced by institutional investors affects firms’ financing costs. Using Greenwood and Thesmar’s (2011) stock price fragility measure, we find that there is a positive relationship between fragility and firms’ costs of bank loans. This effect is most pronounced when lenders rely more on institutional shareholders to discipline corporate management, or when loans are made by relationship lenders, suggesting that unstable flows could weaken institutional investors’ monitoring effectiveness and strengthen relationship banks’ bargaining power.     

The impact of bank regulation on the cost of credit: Evidence from a discontinuity in capital requirements

We study the effect on credit relationships of the Small and Medium Enterprises Supporting Factor (SME-SF), a regulatory risk weight reduction on small loans to SMEs. Employing a regression discontinuity design and matched bank-firm data from Italy, we find that a 1 percent drop in capital requirements causes an average 13 basis points reduction in the cost of credit. Moreover, with a novel measure of bank regulatory capital scarcity, we show that the drop is larger for banks facing tighter constraints. Furthermore, the drop is larger for firms with low switching costs, while the sharp assignment rule may have led to the rationing of marginal borrowers. Such findings indicate that the entire distribution of firms and banks’ characteristics plays a crucial role in determining the impact of regulatory capital changes.     

Is cloud computing the digital solution to the future of banking?

This study investigates the impact of banks’ strategic move to cloud computing on bank performance and risk-taking. Based on a novel index of banks’ exposure to cloud computing, we find that banks’ adoption of cloud computing is associated with lower cost efficiency, higher profit efficiency, and greater operational risk using data on Chinese banks over the period 2008–2019. We also find that cloud computing interacts with other newly emerging technologies, leading to synergy gains in cost efficiency and operational risk control but with a substitutive effect on profit efficiency from blockchain. The findings are of timely policy importance and practical relevance for regulators, policy-makers, and bank managers.     

金融产品持股与银行系统性风险——兼论《商业银行股权管理暂行办法》的影响

基于金融机构通过金融产品增持上市银行股份现象日益普遍的背景,本文运用2011-2019年上市银行数据,采用系统GMM和合成控制法(SCM),分析金融产品持股¹对银行系统性风险的影响及其异质性,并探讨《商业银行股权管理暂行办法》(以下简称《股权办法》)限制金融产品超比例持有上市银行股份规定的效果。结果表明:(1)当单家金融产品股东的持股比例均低于5%²时,其会利用专业优势更好地监督银行行为,金融产品总持股比例有助于降低银行系统性风险。(2)当第一大金融产品股东的持股比例超过5%时,其会利用话语权为自身牟利,导致银行系统性风险增加,削弱金融产品总持股比例对银行系统性风险的降低作用。(3)由于保险产品持股在金融产品总持股中占主导地位,其对银行系统性风险的影响与金融产品持股的作用一致;保险产品以外的其他金融产品总持股比例会降低银行系统性风险。(4)《股权办法》的实施有助于约束持股比例超过5%的机构投资者的冒险行为,进而降低相应银行的系统性风险。     

Bank/sovereign risk spillovers in the European debt crisis

This paper investigates contagion between bank and sovereign default risk in Europe over the period 2007–2012. We define contagion as excess correlation, i.e. correlation between banks and sovereigns over and above what is explained by common factors, using CDS spreads at the bank and at the sovereign level. Moreover, we investigate the determinants of contagion by analyzing bank-specific as well as country-specific variables and their interaction. Using the EBA’s disclosure of sovereign exposures of banks, we provide empirical evidence that three contagion channels are at work: a guarantee channel, an asset holdings channel and a collateral channel. We find that banks with a weak capital buffer, a weak funding structure and less traditional banking activities are particularly vulnerable to risk spillovers. At the country level, the debt ratio is the most important driver of contagion. Furthermore, the impact of government interventions on contagion depends on the type of intervention, with outright capital injections being the most effective measure in reducing spillover intensity.     

银行竞争提高了企业投资水平和资源配置效率吗？——基于分支机构空间分布的研究

银行贷款是我国企业融资的重要方式,在企业生产经营中发挥着举足轻重的作用。2006年和2009年,我国先后两次放松了商业银行分支机构市场准入规制,银行分支机构空间分布发生了较大变化,银行竞争水平和服务实体经济能力明显提升。本文利用2001-2012年国家统计局工业企业数据,以企业周边银行分支机构的数量衡量银行竞争水平,研究银行竞争对企业投资的影响。研究发现,银行分支机构数量的增加显著提高了企业投资水平和投资效率。进一步研究表明,银行分支机构数量增加对企业投资效率的提升作用主要表现在投资不足的企业和非国有企业中,企业融资约束降低和代理冲突减弱是银行竞争提高企业投资效率的主要原因。本研究拓展了银行竞争以及企业投资和资源配置效率的相关文献,对供给侧结构性改革和银行业高质量发展具有启示意义。