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Introduction 3<br />

<strong>in</strong> f<strong>in</strong>ancial assets 18 <strong>and</strong> are, therefore, by def<strong>in</strong>ition <strong>in</strong> the f<strong>in</strong>ancial risk<br />

bus<strong>in</strong>ess. 19<br />

Additionally, risk management is also perceived <strong>in</strong> practice to be necessary<br />

<strong>and</strong> critically important to ensure the long-term survival of banks. Not<br />

only is a regulatory m<strong>in</strong>imum capital-structure <strong>and</strong> risk-management approach<br />

required, 20 but also the customers, 21 who are also liability holders,<br />

should <strong>and</strong> want to be protected aga<strong>in</strong>st default risk, because they deposit<br />

substantial stakes of their personal wealth, for the most part with only<br />

one bank. The same argument is used from an economy-wide perspective to<br />

avoid bank runs <strong>and</strong> systemic repercussions of a globally <strong>in</strong>tertw<strong>in</strong>ed <strong>and</strong><br />

fragile bank<strong>in</strong>g system.<br />

Therefore, we f<strong>in</strong>d plenty of evidence that banks do run sophisticated 22<br />

risk-management functions 23 <strong>in</strong> practice (positive theory for risk management).<br />

They perceive risk management to be a critical (success) factor that<br />

is both used with the <strong>in</strong>tention to create value <strong>and</strong> because of the bank’s<br />

concern with “lower tail out<strong>com</strong>es”, 24 that is, the concern with bankruptcy<br />

risk.<br />

Moreover, banks evaluate (new) transactions <strong>and</strong> projects <strong>in</strong> the light<br />

of their exist<strong>in</strong>g portfolio 25 rather than (only) <strong>in</strong> the light of the covariance<br />

risk with an overall market portfolio. In practice, banks care about the<br />

contribution of these transactions to the total risk of the bank when they<br />

make capital-budget<strong>in</strong>g decisions, because of their concern with lower tail<br />

out<strong>com</strong>es. Additionally, we can also observe <strong>in</strong> practice that banks do care<br />

18 In order to offer products that are tailored to their clients’ needs, banks need to<br />

transform their “resources” along the follow<strong>in</strong>g dimensions: term, scale, location,<br />

liquidity, <strong>and</strong>/or risk itself by orig<strong>in</strong>at<strong>in</strong>g, trad<strong>in</strong>g, or servic<strong>in</strong>g f<strong>in</strong>ancial assets; see<br />

Allen <strong>and</strong> Santomero (1996), p. 19.<br />

19 They enable most of the market participants to cope with economic uncerta<strong>in</strong>ty by<br />

hedg<strong>in</strong>g, pool<strong>in</strong>g, shar<strong>in</strong>g, transferr<strong>in</strong>g, <strong>and</strong> pric<strong>in</strong>g risks. See Harker <strong>and</strong> Stavros<br />

(1998), p. 2.<br />

20 See, for example, the Basle Accord from 1988 (Basle I), the European Capital<br />

Adequacy Directive (CAD), <strong>and</strong> the recent discussion on the newly proposed Basle<br />

Accord (Basle II).<br />

21 And many other stakeholders.<br />

22 Over the last ten years, we have seen dramatic improvements <strong>in</strong> risk measurement<br />

tools to make the risk management <strong>in</strong> banks more effective.<br />

23 Manag<strong>in</strong>g risks has been one of the hottest topics <strong>in</strong> bank<strong>in</strong>g <strong>and</strong> f<strong>in</strong>ance over the<br />

last decade. For <strong>in</strong>stance, <strong>Risk</strong> Magaz<strong>in</strong>e devoted a whole special issue, under the<br />

topic “The Decade of <strong>Risk</strong>,” to this phenomenon; see <strong>Risk</strong> Magaz<strong>in</strong>e (1997).<br />

24 See Stulz (1996), p. 8.<br />

25 For <strong>in</strong>stance, the concern with credit concentrations to one borrower, region, or<br />

<strong>in</strong>dustry is a well-established bank<strong>in</strong>g guidel<strong>in</strong>e <strong>and</strong> is also reflected <strong>in</strong> regulatory<br />

rules (e.g., the “Grosskredit-Richtl<strong>in</strong>ie” <strong>in</strong> Germany).

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