结售汇业务政策的演变及对商业银行风险管理的影响

结售汇业务是我国外汇指定银行开办的一项重要的外汇业务。改革开放以来,我国对外汇制度进行了多次改革与修订,结售汇业务政策也产生较大的变化。本文通过对历年来结售汇政策的变化要点进行梳理,分析政策变化对银行结售汇业务风险的影响,最后对银行如何控制结售汇业务风险提出了相关建议。     

Quantifying preferential trading in the e-MID interbank market

Interbank markets allow credit institutions to exchange capital for purposes of liquidity management. These markets are among the most liquid markets in the financial system. However, liquidity of interbank markets dropped during the 2007–2008 financial crisis, and such a lack of liquidity influenced the entire economic system. In this paper, we analyse transaction data from the e-MID market which is the only electronic interbank market in the Euro Area and US, over a period of 11 years (1999–2009). We adapt a method developed to detect statistically validated links in a network, in order to reveal preferential trading in a directed network. Preferential trading between banks is detected by comparing empirically observed trading relationships with a null hypothesis that assumes random trading among banks doing a heterogeneous number of transactions. Preferential trading patterns are revealed at time windows of 3-maintenance periods. We show that preferential trading is observed throughout the whole period of analysis and that the number of preferential trading links does not show any significant trend in time, in spite of a decreasing trend in the number of pairs of banks making transactions. We observe that preferential trading connections typically involve large trading volumes. During the crisis, we also observe that transactions occurring between banks with a preferential connection occur at larger interest rates than the complement set—an effect that is not observed before the crisis.     

Heterogeneous Market-Making in Foreign Exchange Markets: Evidence from Individual Bank Responses to Central Bank Interventions

Using high-frequency data this article provides evidence that, on average, central bank interventions lead to increased volatility and a widening of bid–ask spreads in the intra-day market for foreign exchange. The results also show that there is dispersion in the bid–ask spread revisions posted by individual banks in response to the central bank entering the market. The findings are consistent with predictions from standard models of market microstructure with heterogeneous agents and have implications for the market power of central banks as well as the payoff generated by trading large amounts of international reserves.     

An Empirical Analysis of the Pricing of Bank Issued Options versus Options Exchange Options

Since 1998, large investment banks have become active as issuers of options, generally referred to as call warrants or bank‐issued options. This has led to an interesting situation in the Netherlands, where simultaneously call warrants are traded on the stock exchange, and long‐term call options are traded on the options exchange. Both entitle their holders to buy shares of common stock. We start with a direct comparison between call warrants and call options, written on the same stock and with the same exercise price, but where the call option has a longer time to maturity. In 13 out of 16 cases we find that the call warrants are priced higher, which is a clear violation of basic option pricing rules. In the second part of the analysis we use option pricing models to compare the pricing of call warrants and call options. If implied standard deviations from options are used to price the call warrants, we find that the call warrants are strongly overpriced during the first five trading days. The average overpricing is between 25 and 30%. Only a small part of the overpricing can be explained by rational arguments such as transaction costs. We suggest that the overvaluation can be explained by a combination of an active financial marketing by the banks and the framing effect.     

我国跨境资金流动趋势识别及影响因素实证研究

文章基于银行代客跨境收支数据,构建交易性、投资性收支指标,采取趋势移动平均方式,对不同方向、不同性质跨境资金流动趋势进行测量、分析、判断,对我国跨境资金流动趋势影响因素、不同时期内跨境资金流动影响机制变化等进行实证研究,并从外汇管理角度提出需关注的重点及相关建议,为加强跨境资金流动监测分析、防范跨境资金流动风险、推进外汇管理改革提供决策参考。     

Banks, private money, and government regulation

We study competition between inside and outside money in economies with trading frictions and financial intermediation. Claims on banks circulate if the redemption rate is low. When the quantity of fiat money is scarce, coexistence of inside and outside money dominates equilibria with a unique medium of exchange. If outside money is ample, banks choose to redeem claims in outside money, which increases welfare. Under binding reserve requirements, tightening monetary policy leads to credit rationing. Our results support recent trends toward lower reserve requirements. However, we also identify situations where restrictions on note issue are beneficial.     

FX counterparty risk and trading activity in currency forward and futures markets

The Global Financial Crisis initiated a period of market turbulence and increased counterparty risk for financial institutions. Even though the Dodd–Frank Act is likely to exempt interbank foreign exchange trading from a central counterparty mandate, market participants have the option to trade currency futures on existing futures markets which standardize counterparty risks. Evidence for the period 2005–11 indicates that the market share of currency futures trading has grown relative to the pre-crisis period. This shift may be the result of a perceived increase in counterparty risk among banks, as well as changes in relative trading costs or changes in other institutional factors.     

Trading by bank insiders before and during the 2007–2008 financial crisis

This paper sheds new light on the role bank executives played in the financial crisis. It examines whether they foresaw the poor performance of their own bank by analyzing their insider trading patterns. Insider trading during 2006 predicts stock returns during the crisis: a portfolio strategy based on insider trading information earns a risk-adjusted return of over 40% during the crisis. Further, banks with a high exposure to the housing market and banks with a low exposure exhibit different insider trading patterns starting in mid-2006, when US housing prices first decline: insiders of high-exposure banks are 20% more likely to sell stock than insiders of low-exposure banks. This pattern is more pronounced for CEOs than other insiders. However, insider trading patterns of high- and low-exposure banks do not differ before 2006. Replacing high-exposure banks by too-big-too-fail banks yields similar results. This evidence indicates that insiders of high-exposure and too-big-too-fail banks revised their assessment of their banks’ investments following the reversal in the housing market.     

Adaptive Learning in an Expectational Difference Equation with Several Lags: Selecting among Learnable REE

It is demonstrated that adaptive learning in the least squares sense may be incapable of satisfactorily reducing the number of attainable equilibria in a rational expectations model when focusing on the forward‐solutions to the model. The model examined, as an illustration, is a basic asset pricing model for exchange rate determination that is augmented with technical trading in the currency market in the form of moving averages since it is the most commonly used technique according to questionnaire surveys. The forward‐solutions to such a model are preferable to the backward‐solutions that are normally utilized since announcement effects is an important feature in currency trade. Because of technical trading in foreign exchange, the current exchange rate depends on j _max lags of the exchange rate, meaning that the model has j _max+1 rational expectations equilibria, where several of them are adaptively learnable in the least squares sense. However, since past exchange rates should not affect the current exchange rate when technical trading is absent, it is possible to single out a unique equilibrium among the adaptively learnable equilibria that is economically meaningful. It is worth noting that the model examined can also be viewed as a model for stock price determination in which the forward‐solutions to the model are preferable to the backward‐solutions since the importance of announcement effects is a common characteristic for currency and stock markets.     

2010年3季度银行间市场运行报告

2010年第三季度,银行间市场创新频出、整体运行平稳。银行间外汇市场引入人民币兑林吉特交易,支持跨境贸易人民币结算业务的发展;人民银行发布通知允许境外人民币清算行等三类机构进入银行间债券市场,拓宽人民币回流渠道;银行间市场贷款转让业务上线交易,丰富银行业金融机构主动管理资产的手段。第三季度,货币市场资金面复杂多变,短期货币市场利率波动明显,市场交易大幅增长;银行间国债指数继续上行,债券交易增长明显;外汇市场上人民币汇率连创新高,价格波动较大,市场交易趋于谨慎;利率和汇率衍生品市场整体保持较快发展。     

Bank income structure and risk: An empirical analysis of European banks

The purpose of this paper is to investigate the relationship between bank risk and product diversification in the changing structure of the European banking industry. Based on a broad set of European banks for the period 1996–2002, our study first shows that banks expanding into non-interest income activities present higher risk and higher insolvency risk than banks which mainly supply loans. However, considering size effects and splitting non-interest activities into both trading activities and commission and fee activities we show that the positive link with risk is mostly accurate for small banks and essentially driven by commission and fee activities. A higher share of trading activities is never associated with higher risk and for small banks it implies, in some cases, lower asset and default risks.     

How Banks' Value-at-Risk Disclosures Predict their Total and Priced Risk: Effects of Bank Technical Sophistication and Learning over Time

Using a sample of eight large commercial banks from 1994 to 2000, Jorion (2002) finds that banks' VaR disclosures for their trading portfolios predict trading income variability. We extend Jorion's findings using a larger sample of 17 banks from 1997 to 2002 reporting trading VaRs under FRR No. 48 (1997). We find that banks' trading VaRs have predictive power for trading income variability that increases with bank technical sophistication and over time. We find that banks' trading VaRs have predictive power for a bank-wide measure of total risk, return variability, and for two bank-wide measures of priced risk, beta and realized returns.     

A Parimutuel Market Microstructure for Contingent Claims

Parimutuel principles are widely used as an alternative to fixed odds gambling in which a bookmaker acts as a dealer by quoting fixed rates of return on specified wagers. A parimutuel game is conducted as a call auction in which odds are allowed to fluctuate during the betting period until the betting period is closed or the auction ‘called’. The prices or odds of wagers are set based upon the relative amounts wagered on each risky outcome. In financial microstructure terms, trading under parimutuel principles is characterised by (1) call auction, non‐continuous trading; (2) riskless funding of claim payouts using the amounts paid for all of the claims during the auction; (3) special equilibrium pricing conditions requiring the relative prices of contingent claims equal the relative aggregate amounts wagered on such claims; (4) endogenous determination of unique state prices; and (5) higher efficiency. Recently, a number of large investment banks have adopted a parimutuel mechanism for offering contingent claims on various economic indices, such as the US Nonfarm payroll report and Eurozone Harmonised inflation. Our paper shows how the market microstructure incorporating parimutuel principles for contingent claims which allows for notional transactions, limit orders, and bundling of claims across states is constructed. We prove the existence of a unique price equilibrium for such a market and suggest an algorithm for computing the equilibrium. We also suggest that for a broad class of contingent claims, that the parimutuel microstructure recently deployed offers many advantages over the dominant dealer and exchange continuous time mechanisms.     

Technical analysis profitability when exchange rates are pegged: A note

Abstract

This note extends earlier results which concluded that generally technical analysis trading rules were profitable when applied to several US dollar exchange rates. These results were linked to the presence of long swings in the dollar series, and here, it is tested whether they still hold in a different setting, with a quasi-fixed exchange rate system. Applying non-parametric and parametric tests to the main European currencies does not allow to confirm, in this case, the profitability of these rules. These results strengthen the likelihood of the hypothesis of a causal link from the exchange rate DGP to the profitability of technical analysis trading rules, as already highlighted in several articles.     

“How using derivative instruments and purposes affects performance of Islamic banks? Evidence from CAMELS approach”

The increase of the use of derivative instruments by Islamic banks for different purposes motivate us to conduct this study. This work has twice objective: firstly, to investigate the effect of each derivative instrument (forwards, futures, swaps or options) on the performance of Islamic banks, and secondly to examine the effect of each derivative purpose (hedging or trading) on the performance of Islamic banks.To reach this end, dynamic panel data econometrics with GMM system are conducted on 32 Islamic banks during the period from 2007 to 2017. The CAMELS approach is used to measure the performance of sample banks.Statistics on sample banks reveal that Islamic banks are substantial users of derivatives, prefer using derivatives for trading purpose than for hedging purpose, and have acceptable level of performance.The main results confirm that using options affects positively and moderately the performance of sample banks. In the same way, we find that swaps have positive and weak impact on the performance of sample banks. However, the results reveal that using forwards decrease the performance of sample banks. Finally, we find that futures have ambiguous and marginal effect on the performance of sample banks.As regards derivative purposes, results do not see which purpose mainly motivate the Islamic banks to invest in the derivatives market.As theoretical implication, we suggest for further studies to explore more the differences between using derivatives by Islamic banks for trading and hedging purpose.Finally, as practical implications, we recommend for managers of Islamic banks to enlarge their use of options and swaps, to supervise their use of forwards and to stop their use of futures.     

The pernicious effects of contaminated data in risk management

Banks hold capital to guard against unexpected surges in losses and long freezes in financial markets. The minimum level of capital is set by banking regulators as a function of the banks’ own estimates of their risk exposures. As a result, a great challenge for both banks and regulators is to validate internal risk models. We show that a large fraction of US and international banks uses contaminated data when testing their models. In particular, most banks validate their market risk model using profit-and-loss (P/L) data that include fees and commissions and intraday trading revenues. This practice is inconsistent with the definition of the employed market risk measure. Using both bank data and simulations, we find that data contamination has dramatic implications for model validation and can lead to the acceptance of misspecified risk models. Moreover, our estimates suggest that the use of contaminated data can significantly reduce (market-risk induced) regulatory capital.     

Is Proprietary Trading Detrimental to Retail Investors?

We study the conflict of interest that arises when a universal bank conducts proprietary trading alongside its retail banking services. Our data set contains the stock holdings of every German bank and those of their corresponding retail clients. We investigate (i) whether banks sell stocks from their proprietary portfolios to their retail customers, (ii) whether those stocks subsequently underperform, and (iii) whether retail customers of banks engaging in proprietary trading earn lower portfolio returns than their peers. We present affirmative evidence for all three questions and conclude that proprietary trading can, in fact, be detrimental to retail investors.     

对中日货币直兑业务发展的思考——以辽宁省大连市为例

自2012年6月1日起,我国完善了银行间外汇市场人民币对日元交易方式,开始发展人民币对日元直接交易,日元成为继美元后第二个与人民币直接交易的主要货币。大连与日本的经贸联系紧密,此政策一出台,在连银行和企业均积极响应,表现出极大的关注。总体看,中日货币直兑开局良好,将对两国经贸关系产生深远影响,但短期内,政策时滞导致银行、企业的交易变化不大,将人民币、日元打造为主要结算货币仍存一些制约因素。本文在分析制约因素的基础上,提出一系列政策建议。     

A time series/cross section analysis of the determinants of Australian trading bank loan/deposit interest margins: 1962–1981

A theoretical model of the determination of trading bank interest margins, based on the hedging theory of interest margin determination, is tested on time series cross-section data of Australian trading banks. Generally, the results are consistent with that theory. That is, there exists a stable non-linear relationship between Australian trading bank net loan/deposit interest margins and measures of market power, degree of absolute risk aversion, and to interest rate uncertainty. Furthermore, the shift from business sector to personal sector loan and deposit business is associated with increased bank interest margins.