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THEORY OF FINANCIAL CRISES Elective M1, FINANCIAL ECONOMICS TRACK ACADEMIC YEAR 2012 / 2013. Professor : Nikolay NENOVSKY. Theory and History of Financial crises. Pr Nikolay NENOVSKY University of Picardie Jules Verne Former Member of Bulgarian Central Bank Governing Council.
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THEORY OF FINANCIAL CRISES Elective M1, FINANCIAL ECONOMICS TRACK ACADEMIC YEAR 2012 / 2013 Professor: Nikolay NENOVSKY
Theory and History of Financial crises Pr Nikolay NENOVSKY University of Picardie Jules Verne Former Member of Bulgarian Central Bank Governing Council EDHEC, Nice, May 2013 EDHEC May 2013
Who is guilty?Two versions… EDHEC May 2013
Sglut (excess) theory, Sglut countries Precautionary S in emerging markets Lack of safety net in China … Demand for safe US assets China accused of promoting export, trough undervalued currency, depressed C…. USA/Ben Bernanke version EDHEC May 2013
USA accused for twin deficits… for spending more/low S for taking seignioragefrom dollar as world currency (exorbitant privilege) Similar discussion in EU….. China version … EDHEC May 2013
Malthus’s theory de retour …. EDHEC May 2013
Regional (EU) dimension • Reproducing the world in a smaller scale/and Common currency .. • North Europe (Germany)/South Europe • EU moral hazard model, Insurance model • Free collateral for EU periphery.. • Real interests rate at the periphery are lower that at the core countries … r <r* because: (r – r*) = (i – i*) - (πexp – πexp*)- (φ – φ*) because πexp> πexp*but i=i* and φ = φ* EDHEC May 2013
Second explanation: Monetary Policy EDHEC May 2013
Low interest rates Liquidity glut not Saving glut … FED ECB Bank of Japan (… depression since 1990) But why ? USA version … China version… Easy money, easy monetary policy … EDHEC May 2013
Low interest rates FED ECB Bank of Japan (….depression since 1990) Monetary Policy EDHEC May 2013
J Taylor interest rate rule (counterfactual)/what is and what ought to be… EDHEC May 2013
One technical/neutral explanation… “Great Moderation”/Globalisation Benefits of globalization High productivity New information technologies Competition Stable price level Low inflation p – prices; w – wages; q – productivity p = (w, q) ∆p = ∆w - ∆q Why easy monetary policy?… EDHEC May 2013
USA vision China’s demand for safety assets because lack of safety net/and repressed consumption/ China promotes export via competitive exchange rate (underappreciated) China vision USA Consumption, Investment euphoria (housing …) China accumulates foreign reserves against capital volatility coming from USA (… bad experience: IMF advised high interest rates in Asia after the Asian 1998 crisis and this was wrong ….) Why easy monetary policy? EDHEC May 2013
Yuan/USD exchange rate market EDHEC May 2013
Chinese exchange rate/2013 • Chinese Yuan looks close to its fair, equilibrium value, in 2005 was 30-35 % weaker… • CA surplus is around 3% GDP (in 2007 was 10%) • Surplus with USA, but deficits with he rest of the world…. • Normal exchange rate (real effective) that bring CA imbalances to a “normal” level …. EDHEC May 2013
Third explanation Financial markets liberalisation Lack of financial regulation EDHEC May 2013
Main points of concern …. Financial markets developments Modern finance theory and risk management Mixture of bad ideas and vested interests… EDHEC May 2013
Financial sector disconnected from the real sector Financial to real transactions = 15 to 1 In 2010 Financial transactions: 800 trl USD Real transactions: 56 trl USD EDHEC May 2013
Financial sector … Short term horizon/next bonus/predatory behavior …. Financial markets are short-sighted/Excessive risk taking, Efficiency market hypothesis is wrong… Speculation, derivatives/SPV.. etc… Lack of regulation, regulatory failures… EDHEC May 2013
Financial instability hypothesis…. Hyman Minsky’s financial instability hypothesis: More stability → low perception of risks, more risks taking → crisis … Solution: Government intervention is need …. Levy Institute, http://www.levyinstitute.org/ EDHEC May 2013
Kevin Dowd and Martin Hutchinson book, 2010, Alchemists of Loss. How Modern Finance and Government Intervention Crashed the Financial System Bad theory and ideas… Vested interests … EDHEC May 2013
Benoit Mandelbrot (1924-2010) Financial theory is wrong because supposes normal probability distribution, in reality the probability distribution is not normal… … exist Fat tails… Poor risk management EDHEC May 2013
Fat tails EDHEC May 2013
Normal distribution means … N(μ,σ2) (bell curve/Gausses distribution): supposes events that deviate from the mean by 5σ or more are practically impossible…. Fat tails EDHEC May 2013