# Category Archives: Mini Courses

# Topics in portfolio choice II – Prof. Paolo Guasoni

# Topics in portfolio choice I – Prof. Paolo Guasoni

# Andrea Pallavicini, “Arbitrage-Free Pricing with Funding Costs and Collateralization”

Friday May 29 2015

9.30 – 13.00

Scuola Normale Superiore

Aula Fermi

**Andrea Pallavicini
**Banca IMI, Milano and Imperial College, London

**Arbitrage-Free Pricing with Funding Costs and Collateralization**

**Abstract
**The financial crisis started in 2007 has shown that any pricing framework must include from the very beginning the possibility of default of any market player. As a consequence derivative valuation and risk analysis have moved from exotic derivatives managed on simple single-asset classes to simple derivatives embedding credit risk and new, or previously neglected, types of complex and interconnected non-linear effects. Derivative valuation is adjusted to include counterparty credit risk and contagion effects along with funding costs due to collateral posting, treasury policies, and regulatory constraints. A second level of complexity is produced by moving from a single trade to the whole bank portfolio. Aggregation-dependent valuation processes, and theirs operational challenges, arising from non-linearities are discussed both from a mathematical and practical point of view.

Download slides here.

All interested people are kindly invited.

# Luca Capriotti, “Real Time Risk Management with Adjoint Algorithmic Differentiaton”

Friday June 20 2014

11.00 – 12.30, 14.30 – 16.00

Scuola Normale Superiore

Aula Bianchi

**Luca Capriotti
**Credit Suisse London

**Real Time Risk Management with Adjoint Algorithmic Differentiaton**

**Abstract
**Adjoint Algorithmic Differentiation (AAD) is one of the principal innovations in risk management of the recent times. In this minicourse I will introduce AAD and show how it can be used to implement the calculation of price sensitivities in complete generality and with minimal analytical effort. The focus will be the application to Monte Carlo methods – generally the most challenging from the computational point of view. With several examples I will illustrate the workings of AAD and demonstrate how it can be straightforwardly implemented to reduce the computation time of the risk of any portfolio by order of magnitudes. ￼

Download flyer here and slides here.

All interested people are kindly invited.

# Andrea Pallavicini, “Credit Risk Modelling Before and After the Crisis”

# Paolo Guasoni, “Frictions and Fees in Portfolio Choice”

Monday May 13 2013, 16.00 – 18.00 Aula 2

Tuesday May 14 2013, 11.00 – 13.00 Aula 2

Wednesday May 15 2013, 14.00 – 16.00 Aula Bianchi

Thursday May 16 2013, 11.00 – 13.00 Aula 2

Scuola Normale Superiore

**Paolo Guasoni
**Boston University and Dublin College University

**Frictions and Fees in Portfolio Choice**

All interested people are kindly invited.

# Jean-Philippe Bouchaud, “Instabilities in Financial Markets”

Thursday May 9 2013, 16.00 – 18.00 Aula Mancini

Friday May 10 2013, 14.00 – 16.00 Aula Mancini

Monday May 13 2013, 9.00 – 11.00 Aula Bianchi

Scuola Normale Superiore

**Jean-Philippe Bouchaud
**Capital Fund Management and Ecole Polytechnique

**Instabilities in Financial Markets**

May 9 “Stylized facts: old pieces and new results”

May 10 “Price formation, market impact and HFT”

May 13 “Instabilities: some (dangerous) feedback loops”

All interested people are kindly invited.

# Rama Cont, “Functional Ito calculus and Functional Kolmogorov equations”

Monday April 8 2013, 10.00 – 13.00 Aula Tonelli

Monday April 15 2013, 10.00 – 13.00 Aula Tonelli

Monday April 22 2013, 10.00 – 13.00 Aula Tonelli

Tuesday April 23 2013, 9.00 – 12.00 Aula 2

Wednesday April 24 2013, 9.00 – 12.00 Aula Dini

Monday May 27 2013, 10.00 – 13.00 Aula Tonelli

Scuola Normale Superiore

**Rama Cont
**Imperial College London and CNRS

Laboratoire de Probabilités et Modeles Aléatoires, Université Paris VI-VII

**Functional Ito calculus and Functional Kolmogorov equations**

All interested people are kindly invited.

# Rosario Nunzio Mantegna, “Econophysics Investigation of Financial Markets: Correlation, Heterogeneity and Agent Based Models”

Tuesday October 4 2011 15.00 – 17.00 Aula Bianchi

Wednesday October 5 2011 11.00 – 13.00 Aula Bianchi

Thursday October 6 2011 11.00 – 13.00 Aula Mancini

Scuola Normale Superiore

**
Rosario Nunzio Mantegna
**Università di Palermo

**Lecture 1. Correlation, hierarchical clustering and correlation based networks in financial markets
**Download slides here.

**Download slides here.**

Lecture 2. Heterogeneity and specialization of investors in financial markets

Lecture 2. Heterogeneity and specialization of investors in financial markets

**Download slides here.**

Lecture 3. Agent based modeling of financial markets

Lecture 3. Agent based modeling of financial markets

# Jean-Philippe Bouchaud, “An introduction to Statistical Phy-nance”

Wednesday April 13 2011, 14.00 – 16.00 Aula Dini

Thursday April 14 2011, 14.00 – 16.00 Aula Dini

Friday April 15 2011, 11.00 – 13.00 Aula Fermi

Scuola Normale Superiore

**Jean-Philippe Bouchaud
**Science & Finance, Capital Fund Management, Paris

**Lecture 1. (Wednesday April 13) The dynamics of price in financial markets **

- Fat tails and intermittent dynamics: empirical facts and models
- High frequency and seasonality effects
- Cross sectional and multivariate effects
- Correlations and copulas

**Lecture 2. (Thursday April 14) Price formation and microstructure**

- Order book dynamics
- Order flow dynamics
- Impact and liquidity
- Is price dynamics exogenous or endogenous?

**Lecture 3. (Friday April 15) The world of financial derivatives**

- The worrying ways of financial engineering
- Option pricing: welcome to a non Black-Scholes world
- Volatility modelling: GARCH and multiscale/multifractal frameworks
- The hedge Monte-Carlo method
- The need for “second generation” models

# Sylvain Arlot, “Advanced Course on Statistics”

Monday February 14 2011, 14.00 – 16.00 Aula Bianchi

Tuesday February 15 2011, 9.00 – 11.00 Aula Fermi

Thursday February 17 2011, 14.00 – 16.00 Aula Fermi

Tuesday February 22 2011, 14.00 – 16.00 Aula Dini

Wednesday February 23 2011, 9.00 – 11.00 Aula Bianchi

Scuola Normale Superiore

** SYLVAIN ARLOT
**CNRS-INRIA and ENS, Paris

**Advanced Course on Statistics**

**Lecture 1. (Monday February 14) Statistical learning **

- the statistical learning learning problem
- examples: prediction, regression, classification, density estimation
- estimators: definition, consistency, examples
- universal learning rates and No Free Lunch Theorems [1]
- the estimator selection paradigm, bias-variance decomposition of the risk
- data-driven selection procedures and the unbiased risk estimation principle

**Lecture 2. (Tuesday February 15) Model selection for least-squares regression **

- ideal penalty, Mallows’ Cp
- oracle inequality for Cp (i.e., non-asymptotic optimality of the corresponding model selection procedure), corresponding learning rates [2]
- the variance estimation problem
- minimal penalties and data-driven calibration of penalties: the slope heuristics [3,4]
- algorithmic and other practical issues [5]

**Lecture 3. (Thursday February 17) Linear estimator selection for least-squares regression [6] **

- linear estimators: (kernel) ridge regression, smoothing splines, k-nearest neighbours, Nadaraya-Watson estimators
- bias-variance decomposition of the risk
- the linear estimator selection problem: CL penalty
- oracle inequality for CL
- data-driven calibration of penalties: a new light on the slope heuristics

**Lecture 4. (Tuesday February 22) Resampling and model selection **

- regressograms in heteroscedastic regression: the penalty cannot be a function of the dimensionality of the models [7]
- resampling in statistics: general heuristics, the bootstrap, exchangeable weighted bootstrap [8]
- study of a case example: estimating the variance by resampling
- resampling penalties: why do they work for heteroscedastic regression? oracle-inequality. comparison of the resampling weights [9]

**Lecture 5. (Wendsday February 23) Cross-validation and model/estimator selection [10] **

- cross-validation: principle, main examples
- cross-validation for estimating of the prediction risk: bias, variance
- cross-validation for selecting among a family of estimators: main properties, how should the splits be chosen?
- illustration of the robustness of cross-validation: detecting changes in the mean of a signal with unknown and non-constant variance [11]
- correcting the bias of cross-validation: V-fold penalization. Oracle-inequality. [12] Continue reading