分析集中風險【外文翻譯】

1、<p><b>　　外文翻譯</b></p><p><b>　　原文</b></p><p>　　Analyzing Concentration Risk</p><p>　　Material Source: Algorithmic January 2009

2、 Author: Diane Reynolds</p><p>　　Concentration risks, particularly concentrations in credit risk, have played a key role in the financial instability of the banking sector in 2008. This paper examines diff

3、erent objectives in managing credit concentration risk. The suitability of different measures and presentation techniques is discussed and illustrated in the context of a case study. We also look deeper into “measures”,

4、examining the contributions and interactions of migration, name and sector concentration risk on the portfol</p><p>　　The historic experience indicated that the loan concentration degree risk causes one of b

5、ank crisis's primary causes. Loan concentration degree risk both with single pen large quantity credit exposition related, and is closely related with the Commercial bank each kind of loan's between relevance, wi

6、ll have the important influence to the bank credit risk as well as the economical capital. Because the loan is the bank most important property, usually in the situation loans the concentration degre</p><p>

7、　　Deals with the loan concentration degree risk. Although credit concentration degree risk's destructiveness has been widely approved by the field, but because the loan concentration degree risk's Measurement Tec

8、hnique is not very mature, therefore the new capital agreement has not set the explicit capital request and the gauging device to the loan concentration degree risk. Under first prop frame, credit risks capital request g

9、auging device including standards act and internal rating law (IRB). I</p><p>　　In internal rating law frame, credit risks capital request formula establishment in “combination invariability” above foundatio

10、n. “The combination invariability” is refers to the loan the capital in cash request to be decided by this loan risk, but is not decided by this loan in the asset portfolio. In order to satisfy (draws close at least in)

11、“the combination invariability” the request, discusses the foundation as the IRB legal principle theory of law approach single risk factor pattern (ASRF)</p><p>　　The new capital framework agreement will loa

12、n the centralism risk to place the second prop: Control inspection; Performs to consider. When second prop frame, bank appraisal capital sufficiency of capital should consider fully line of business the credit risks cent

13、ralism degree, the comprehensive consideration bank possibly faces each kind of loan centralism risk, including: Single transaction match or a group of incident cross-correlation transaction match main risk; To identic

14、al economical pr</p><p>　　May divide into the following three levels to the above each kind of loan centralism risk's control inspection. First, the bank own should have the effective internal policy, th

15、e system and the control, with the aim of distinguishing, the survey, the monitor and the control line of business loan centralized risk; The banking management credit risk centralized policy and the procedure must reali

16、ze the documents, including the loan concentration degree risk the definition, risk centralized and rel</p><p>　　The massive research indicated that the loan concentration degree risk has the material effect

17、 to the economical capital. If neglects this kind of influence, calculates the capital request possibly has the misleading result.</p><p>　　In different profession customer concentration degree risk performa

18、nce. In view of the fact that the different profession's technical feature, the economies of scale existence remarkable difference, the profession is affects in this profession an enterprise movement very important f

19、actor, in the different profession's borrower loans the concentration degree risk also to have the very wide difference. The Federal Reserve carries on the comparison to certain concentration degree loan combination&

20、#39;s</p><p>　　The multi-dimensions supervise the side Commercial bank to loan want the concentration degree risk. The loan concentration degree risk displays in the customer concentration degree, the profes

21、sion concentration degree, the region concentration degree as well as three between intercross and so on many dimensions, but the present non-scene supervision system can only provide the large quantity risk exposition t

22、he data, is unable to reflect the commercial bank lending concentration degree risk accu</p><p>　　The supervision Commercial bank establishes the multi-level risks to roll the moderate quota system and the l

23、abor principle system. The regulatory authority is the Commercial bank manages the loan concentration degree to the loan concentration degree quota or the proportion limit's stipulation the lowest standard, the Comm

24、ercial bank should act according to line of business the capital strength, the customer community's characteristic, risk management ability and so on, regulatory authority 's </p><p><b>　　譯文<

25、;/b></p><p><b>　　分析集中風險</b></p><p>　　資料來源: Algorithmic January 2009</p><p>　　作者：Diane Reynolds</p><p>　　集中風險，特別是信貸風險集中，都在2008年銀行業(yè)金融動蕩發(fā)揮了關鍵作用。本文探討在管理信貸風

26、險集中，不同目標，不同措施和編制方法的適用性進行了討論和研究。我們也期待更深入地“措施”研究的貢獻和遷移，姓名和對投資組合的行業(yè)集中度風險的互動。</p><p>　　歷史經(jīng)驗表明,貸款集中度風險是導致銀行危機的主要原因之一。貸款集中度風險既與單筆大額信貸暴露有關，又與商業(yè)銀行各類貸款之間的相關性密切相關,對銀行的信貸風險以及經(jīng)濟資本會產(chǎn)生重要的影響。由于貸款是銀行最重要的資產(chǎn)，通常情況下貸款集中度風險是銀行面臨

27、的最大風險集中,貸款集中度風險主要源于三方面原因:一是大額單一風險暴露(客戶集中)；二是對特定行業(yè)過于集中(行業(yè)集中)；三是借款者之間直接商業(yè)聯(lián)系或間接通過信用風險緩釋導致的潛在損失的相互依賴。</p><p>　　應對貸款集中度風險。雖然信貸集中度風險的破壞性已被業(yè)界廣泛認同，但由于貸款集中度風險的計量技術還很不成熟，因此新資本協(xié)議未對貸款集中度風險提出明確的資本要求和計量方法。在第一支柱框架下，信用風險的資本

28、要求計量方法包括標準法和內部評級法（IRB）。若商業(yè)銀行使用標準法,單筆貸款的資本要求取決于借款人的外部評級，貸款組合的資本要求等于所有貸款資本要求的簡單加總，與該組合的構成和特征沒有關系。</p><p>　　在內部評級法框架中，信用風險資本要求的計算公式建立在“組合不變性”</p><p>　　的基礎之上?！敖M合不變性” 是指貸款的資本金要求取決于該貸款的風險，而不是取決于該貸款所在資

29、產(chǎn)組合。為滿足(至少趨近于)“組合不變性”的要求,作為IRB 法理論基礎的漸近單風險因子模型(ASRF)有以下兩條關鍵假設:(1)資產(chǎn)組合充分分散；(2)只存在惟一的系統(tǒng)風險因子。在(ASRF)中，這個惟一的系統(tǒng)風險因子就是宏觀經(jīng)濟運行狀況。嚴格地說，第二條假設從一個經(jīng)濟整體而不是單個銀行資產(chǎn)組合的角度來分析信用風險來源，任何行業(yè)、地區(qū)風險都與宏觀經(jīng)濟風險保持一致。寬泛理解，若銀行資產(chǎn)組合在行業(yè)和地區(qū)間已得到充分分散,惟一留下的系統(tǒng)風險

30、就是經(jīng)濟的運行狀況。從這一點上，第二條假設可理解為是對銀行資產(chǎn)組合的一種要求。然而，模型的具體假設在實際組合中不可能得到完全滿足。這是因為假設資產(chǎn)組合充分分散，憊味著組合中不存在客戶集中風險, 假設只存在惟一的系統(tǒng)因子：宏觀經(jīng)濟；則意味著行業(yè)集中風險也不存在。而實踐中這兩種集中風險相當普遍，對于那些規(guī)模較小或相對專業(yè)性的機構來說更是如此。也就是說，基于ASRF模型的假設可以看出，新資本協(xié)議第一支柱對信用風險的資本要求，并沒有覆蓋貸款集中

31、風險。</p><p>　　新資本協(xié)議框架將貸款集中風險放在了第二支柱:監(jiān)督檢查;中加以考慮。在第二支柱框架下，銀行評估資本充足率時應充分考慮本行的信用風險集中程度，全面考慮銀行可能面臨的各種貸款集中風險,包括：單個交易對手或一組相互關聯(lián)的交易對手的主要風險；對同一經(jīng)濟行業(yè)或地域的交易對手的貸款風險；對財務狀況依賴于同類業(yè)務或商品的交易對手的貸款風險；因銀行信用風險緩釋業(yè)務產(chǎn)生的不直接的貸款風險(例如,單一化的抵

32、押品產(chǎn)生的風險或單個交易對手提供貸款保護產(chǎn)生的風險)。</p><p>　　對上述各類貸款集中風險的監(jiān)督檢查可分為以下三個層次。首先，銀行自身應具備有效的內部政策、系統(tǒng)和控制，以便識別、測量、監(jiān)測和控制本行的貸款集中風險；銀行管理貸款風險集中的政策和程序必須實現(xiàn)文檔化，其中包括貸款集中度風險的定義，風險集中和相關限額的計算方法等。其次，銀行管理層應定期進行主要貸款風險集中的壓力測試，檢查測試的結果，以便識別可能對

33、銀行運營狀況產(chǎn)生負面影響的市場條件的潛在變化，并做出反應。最后，在監(jiān)管過程中，監(jiān)管當局應評估銀行貸款風險集中的程度、銀行管理水平和根據(jù)第二支柱要求銀行資本充足率內部評估水平，評估還應包括對銀行壓力測試結果的檢查。如銀行不能有效管理貸款集中度風險，監(jiān)管當局應采取相應的措施。</p><p>　　大量研究表明，貸款集中度風險對經(jīng)濟資本存在著重要影響。如果忽視這種影響，計算出來的資本要求可能產(chǎn)生誤導性結果。</p

34、><p>　　不同行業(yè)中客戶集中度風險的表現(xiàn)。鑒于不同行業(yè)的技術特征、規(guī)模經(jīng)濟存在顯著的差別，行業(yè)是影響該行業(yè)中企業(yè)運行的一個非常重要的因素，不同行業(yè)中的借款人貸款集中度風險也存在很大差別。美聯(lián)儲對一定集中度貸款組合的信用風險VAR與標準貸款組合的VAR進行比較來衡量貸款行業(yè)集中的相對風險。美聯(lián)儲的實證分析表明，隨著貸款集中度的增加，不同行業(yè)貸款風險變化方向和程度是不同的。大部分行業(yè)隨著貸款集中度提高風險有所上升，個

35、別行業(yè)表現(xiàn)出很高的相關度，如汽車行業(yè)隨著集中度的提高，貸款風險顯著增加；而有些行業(yè)隨著集中度提高，風險卻趨于下降，如家具行業(yè)，這說明該行業(yè)集中度較低，平均資產(chǎn)相關性也較低。總體上來看，貸款集中度與貸款風險關系比較復雜，取決于借款人評級、行業(yè)集中度、行業(yè)/企業(yè)資產(chǎn)波動性、行業(yè)/ 企業(yè)資產(chǎn)相關性、期限等許多因素。在借款人評級和期限相同的情況下，一些行業(yè)中客戶集中度對信用風險VAR存在著顯著影響，如汽車、電信等行業(yè)。</p>&

36、lt;p>　　多維度監(jiān)側商業(yè)銀行貸欲集中度風險。貸款集中度風險表現(xiàn)在客戶集中度、行業(yè)集中度、區(qū)域集中度以及三者之間相互交叉等多個維度，而現(xiàn)行的非現(xiàn)場監(jiān)管系統(tǒng)僅能提供大額風險暴露的數(shù)據(jù)，無法準確反映商業(yè)銀行貸款集中度風險的全貌。因此，監(jiān)管當局應改進非現(xiàn)場監(jiān)測報告體系，提供多維度的貸款風險集中度信息，以此為基礎，分析貸款集中度風險，如對計算不同維度貸款集中度風險的行業(yè)平均水平，確定相應的觸發(fā)比例，要求未滿足觸發(fā)比例商業(yè)銀行對貸款集中度

37、風險計提資本。</p><p>　　督促商業(yè)銀行建立多層次的風險滾中度限額體系和工理體系。監(jiān)管當局對貸款集中度限額或比例限制的規(guī)定是商業(yè)銀行管理貸款集中度的最低標準，商業(yè)銀行應根據(jù)本行的資本實力、客戶群體的特點、風險管理能力等，將監(jiān)管當局的貸款集中度要求分解到具體的行業(yè)、區(qū)域和客戶群，建立一整套風險限額體系，以及行之有效的限額管理組織框架和制度安排，包括限額設定和審批、超限額情形的審批、限額執(zhí)行情況的監(jiān)測和報告體