Week in risk (ending June 19th)

David Harper CFA FRM

David Harper CFA FRM
Subscriber
FRM and BT
Quantitative
  • Understanding Bayesian A/B testing (using baseball statistics) http://varianceexplained.org/r/bayesian_ab_baseball/ This is a great post (series of posts) on testing posterior distributions because it illustrates some Bayesian concepts concretely (this is the value of code thinking!). He uses the beta distribution to characterize the prior expectations of batting averages; you may recall that in risk, the flexible beta distribution is commonly used to characterize loss given default (LGD). Writes "
    We’d need to know the probability one beta distribution is greater than another. This question is not trivial to answer, and I’m going to illustrate four routes that are common lines of attack in a Bayesian problem: Simulation of posterior draws; Numerical integration; Closed-form solution; and Closed-form approximation"
Risk
  • The Committee of Sponsoring Organizations of the Treadway Commission (COSO) has unveiled an update to its Enterprise Risk Management – Integrated Framework and is seeking public comment of the proposal. Here is the public exposure (132 pp) at http://trtl.bz/21ufutT but here is the shorter (14 pp) Executive Summary at http://trtl.bz/1Y3hhZi
  • "Explaining risk management in plain English" by Norman Marks https://normanmarks.wordpress.com/2016/06/12/explaining-risk-management-in-plain-english/ “I have been saying for a while that one of the reasons for the disconnect between senior executives and risk practitioners is the latter’s language. Leaders of the organization speak in plain English about the achievement of corporate objectives such as earnings, profits, and projects. Leaders of the risk management function talk about risks, impact or consequences, and sometimes in technobabble about terms that only risk practitioners and statisticians understand, such as ‘risk capacity’, ‘alpha’, and ‘residual risk’.”
  • Aswath Damodaran on How to Invest Internationally https://blogs.cfainstitute.org/inve...h-damodaran-on-how-to-invest-internationally/ “Damodaran also advises investors to distinguish between different types of risk. Continuous risk — the notion that volatility is more extreme in developing markets than in developed ones — is a simple problem for investors since they can factor it into risk premiums. Truncation or discreet risk is the possibility of events like wars or coups. Damodaran warns that this risk is difficult to analyze with the existing tools and cannot be captured by discount rates, so investors should not lump these two types of risk together.”
  • Personalities key in shaping banks’ risk taking, study says. The ‘style’ of executives holds more sway than pay or bonuses, research shows https://next.ft.com/content/0116059a-348c-11e6-ad39-3fee5ffe5b5b
  • LIBOR, EURIBOR and TIBOR - Taking Stock Half-A-Decade Later https://www.finextra.com/blogpostin...-and-tibor---taking-stock-half-a-decade-later Report here at http://trtl.bz/1YzIUaP
  • Three Ways to Identify Governance Risk https://blogs.cfainstitute.org/investor/2016/06/16/three-ways-to-identify-governance-risk/ “Before investing, Newton conducts thorough research to analyze and understand a company on three particular levels: 1. Board of Directors: How is the board composed in terms of diversity, tenure, and independence? 2. History: Does the company have a track record of environmental carelessness or infractions? And 3. Culture: How does the firm engage with the community and exercise stewardship over shareholder resources?”
Regulations & Policy
(Negative) Interest rates
FinTech
Brexit
Other
 
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