Uncertainty, Liquidity and Financial Cycles
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1 Uncertainty, Liquidity and Financial Cycles Ge Zhou Zhejiang University Jan 2019, ASSA Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
2 Recession SP 500 Index and Fixed Capital Formation Ratio SP 500 Index Fixed Capital Formation Ratio
3 50 Annual Growth Rate of SP 500 and Fixed Capital Formation Ratio Recession Growth Rate of SP 500 Fixed Capital Formation Ratio
4 Motivation Obvious Phenomenon: Inconsistence between macroeconomic uctuations and nancial cycles After the Great Recession, a slow economic recovery together with nancial booms Macroeconomy and nancial markets often blossom together. Very FEW Theoretical Explanation Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
5
6 What I Do Main Question: What are the roles of Uncertainty? My Answer: An endogenous Liquidity Allocation Mechanism between real economy and nancial system A simple theory based on a tractable continuous-time DSGE model of heterogenous agents Numerical Analysis of Global Dynamics Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
7 Key Assumptions Slower Adjustment of Macroeconomy than Financial Market. Physical capital has less liquidity than its corresponding equity. Financial Frictions: Skin in the Game Entrepreneurs have to take partial risk of their own investment. This leads to entrepreneur faces a leverage constraint that depends on his capital structure investment depends on not only equity price but also the capital structure Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
8 Main Insights Net Worth of an entrepreneur determines his ability of risk tolerance a ects corporate investment Recession Stage: Risk-averse entrepreneurs who have low net worth, will disinvest and hold more nancial assets. More funds ows into nancial system from real economy. There is a nancial booms but a slow economic recovery. Booms Stage: Entrepreneurs with high net worth have high investment demand. This leads to high equity prices. Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
9 Literature Bolton, Chen, Wang (JF, 2011) Bolton, Wang, Yang (Forthcoming in JF) Brunnermeier, Eisenbach and Sannikov (2013) Brunnermeier and Sannikov (AER 2014, 2017) Di Tella (JPE, 2017) He and Kondor (Econometrica, 2016) Kiyotaky and Moore (2012) Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
10 The Model: Environment Infinite identical risk-averse entrepreneurs that totally measured by 1. Infinite identical risk-neutral investors that totally measured by 1. ONLY entrepreneurs can run physical capital. Entrepreneurs raise funds by issuing equity and debt. Investors can buy equity and risk-free bonds. Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
11 Output Market Equity Market Entrepreneurs Investors Capital Market Bond Market Real Economy Financial System The Economic Structure
12 The Model: Entrepreneur s Balance Sheet Assets Liabilities Capital: qk (Outside) Equity: (1 χ) qk (Others ) Equity: qh Bond: (ν 1)W Net Worth: W Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
13 The Model: Key Assumption Less liquidity of physical capital because of transaction cost: Ψ (κ) < κ This implies that capital and equity are imperfect substitutive. The market price of physical capital is denoted by p. The evolving process of capital is given by dk = [Φ (ι) + Ψ (κ) δ] Kdt + σkdz Entrepreneurs face equity issuance constraint: χ χ. This leads to a leverage constraint for entrepreneurs from the equity issuance constraint the optimal investment choice depends on equity price, q, and the capital structure Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
14 The Model: Entrepreneurs s.t. Z max E fc,χ,ι,κ,ν,ζg χ χ qh 0 e ρt C 1 γ 1 γ dt νw χqk + qh dw = νwdr + (1 ν) Wrdt Cdt d (qh) qh = (ζ δ + µq + σσ q ) dt + (σ + σ q ) dz d (qk ) qk = [Φ (ι) + Ψ (κ) δ + µq + σσ q ] dt + (σ + σ q ) dz where A ι pκ dr = dt + [Φ (ι) + Ψ (κ) δ + µ q + σσ q ] dt + (σ + σ q ) dz q Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
15 The Model: Entrepreneurs Optimal Investment Ratio: (1 γ) ϕ (w) w ϕ 0 (w) νw ϕ 0 (w) + 1 Φ 0 (ι) = 1 q w qk W : the capital ratio; ϕ (w) J (W, qk ) / (qk )1 γ Relative Price between capital and equity valued by entrepreneurs: (1 γ) ϕ (w) w ϕ 0 (w) νw ϕ 0 (w) + 1 = qkj0 qk + νwj0 W νwj 0 W Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
16 The Model: Entrepreneurs Trade-O between Producing Capital and Purchasing Capital: Φ 0 (ι) K {z } = Ψ 0 (κ) K /p {z } Capital Formation by Producing Capital Formation by Purchasing Asset Pricing of Inside Equity: = A ι pκ + Φ (ι) + Ψ (κ) δ + µ q + σσ q q {z } γ + (1 ν) w ϕ00 ϕ 0 E (dr )/dt (σ + σ q ) 2 r + λ 2 V γ ϕ 0 {z } Liquidity Premium λ 2 : the Lagrangian multiplier of equity issuance constraint χ χ Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
17 The Model: Di erences with BS (2014, 2017) BS(2014, 2017): physical capital, equity: relative price is 1 Φ 0 (ι) K {z } = K /q {z} Capital Formation by Producing New Capital by Purchasing Non-Arbitrage Condition: one more unit of investment ratio Φ 0 (ι) K {z } = Ψ 0 (κ) K /p {z } Capital Formation by Producing Capital Formation by Purchasing Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
18 The Model: Investors s.t. max fc I 0,νg E 0 Z 0 e rt Cdt dw = νw dr + r (1 ν) W dt Cdt Asset Pricing of (Outside) Equity: A ι + Φ(ι) + Ψ (κ) δ + µ q + σσ q = r q {z } E (dr /dt) Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
19 Markov Equilibrium: 2nd-Order ODEs µ q q = q 0 (η) µ η η q00 (η) (σ η η) 2 n h ρ (1 γ) Φ(ι) δ + µ q + σ q γ σ 2 (σ + σq ) 2io ϕ (cη) 1 γ = max fc,ι,νg 1 γ (ν 1)2 (σ + σ q ) 2 η 2 ϕ 00 ( ) ν A ι q + (ν 1) [Φ(ι) δ + µ q + σ q σ] + + (1 ν) r c + (1 ν) γ (σ + σ q ) 2 ηϕ 0 η R 1 0 W i di R 1 0 qk i di : entrepreneurs wealth ratio over the aggregate wealth Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
20 Markov Equilibrium: Parameterization Set Similar Parameters Values as Brunnermeier and Sannikov (2014): Parameter Meaning Value ρ time discount rate of entrepreneurs 6% r time discount rate of investors 5% γ entrepreneur s risk aversion 2 A productivity level 12% δ depreciation rate 3% σ capital quality shock 2% φ investment function 10 χ equity issuance constraint 70% Investment function: Φ (ι) 1 φ p1 + 2φι 1 Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
21 Investment Ratio, Equity Price Growth and Equity Market Risk q q q q Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
22 Equity Price Growth and Net Liquidity to Financial System Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
23 Global Dynamics with Di erent Extents of Equity Issuance Constraint Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
24 Conclusion A tractable DSGE model of an endogenous liquidity allocation mechanism between real economy and nancial markets. The endogenous risks and liquidity allocation are helpful to understand the inconsistency between macroeconomic uctuations and nancial cycles. Ge Zhou (Zhejiang University) Uncertainty, Liquidity and Financial Cycles Jan / 26
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