Презентация Introduction to modern portfolio theory: the set up. Seminar 2 онлайн
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- Всего слайдов:26 слайдов
- Для класса:1,2,3,4,5,6,7,8,9,10,11
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Слайды и текст к этой презентации:
№1 слайд
Содержание слайда: Seminar 2
Introduction to modern portfolio theory: the set up
Mikhail Kamrotov
Data Analysis in Economics and Finance
Winter /Spring 2019
№2 слайд
Содержание слайда:
№3 слайд
Содержание слайда: Recent view on quantitative methods in decision-making
Quantitative funds would never rule the space
They are “black boxes” that recommend counter-intuitive trades, bets that nobody can understand
№4 слайд
Содержание слайда: Most successful hedge funds (as of 2017)
Renaissance Technologies ($42 billion assets under management, up 42% from the previous year)
AQR Capital Management ($69.7 billion AUM, up 48%)
Two Sigma ($51 billion AUM, up 28%)
Bridgewater Associates ($122.3 billion AUM, up 17% from 2015)
In general: five of the six largest firms in this 2017 ranking rely on computers and algorithms to make their investment decisions (Institutional Investor)
№5 слайд
Содержание слайда: Role of data analysis in modern finance
Investment shops are fighting over mathematicians and engineers
FinTech
“Half of the books about finance are written by authors who have not practiced what they teach. They contain extremely elegant mathematics that describe a world that does not exist. The other half of the books are written by authors who offer explanations absent of any academic theory. They misuse mathematical tools to describe actual observations”. (Lopez de Prado)
Data analysis fills the gap between theory and practice
№6 слайд
Содержание слайда: Big data in action
Parking lots traffic
In 2015 certain hedge funds utilizing satellite data sources noted rising traffic in the parking lots of J.C. Penny stores
This was a clear sign of increasing sales
JCP’s stock jumped more than 10% when public reports of JCP’s increased store traffic came to light in August.
Crop estimates
In 2015 some investment firms examined infrared satellite images taken of over one million corn fields
They correctly predicted that U.S. corn production was 2.8% smaller than prevailing government estimates
Successful market guessing requires data analysis skills!
№7 слайд
Содержание слайда: Course objective
Look at one particular application of data analysis
Make it as close to practice as possible
Avoid the misuse of mathematics
Ultimate goal: build an investment portfolio
Discuss modern approaches
Gather financial data
Compute optimal asset allocations
Evaluate historical performance
Track out-of-sample results
№8 слайд
Содержание слайда: General workflow in the asset management industry
Understand client (or your own) needs
Formalize requirements
Build an algorithm that produces tailored portfolio
№9 слайд
Содержание слайда: Your projects
How did you pick assets?
How did you match characteristics of your portfolio to client profiles?
How did you assign weights?
What measures did you use for selecting the best portfolio?
№10 слайд
Содержание слайда: Your projects
How did you pick assets?
How did you match characteristics of your portfolio to client profiles?
How did you assign weights?
What measures did you use for selecting the best portfolio?
How well have your portfolios performed since inception?
Let’s go to investing.com and check
№11 слайд
Содержание слайда: Key portfolio characteristics
Return
Risk
Complex measures of the probability distribution of portfolio returns (skewness, kurtosis, etc.)
Similarity between in-sample and out-of-sample performance
Robustness of assets allocation procedure
Financial rocket scientists have a lot more to offer
№12 слайд
Содержание слайда: Risk vs return
The risk and return trade-off is the main principle of investing
Future return is uncertain
“Risk means more things can happen than will happen” (LSE)
Extreme movements are usually not anticipated on all time scales
№13 слайд
Содержание слайда: Daily data
№14 слайд
Содержание слайда: Flash Crash 2010
(intraday data)
Almost 10% drop in just couple of minutes
It’s a result of algorithmic trading
Almost impossible to predict
№15 слайд
Содержание слайда: Risk vs return
The risk and return trade-off is the main principle of investing
Future return is uncertain
Extreme movements are usually not anticipated on all time scales
Risk-return trade-off works because people are constantly searching for profits -> equilibrium
Is there a free lunch in finance?
№16 слайд
Содержание слайда: Portfolio theory: outline
Naïve 1/n
Markowitz theory
Risk parity theory
Hierarchical risk parity
№17 слайд
Содержание слайда: Diversification
Objective: lower our exposure to risk
If assets are negatively correlated, you construct a low risk portfolio
The risk of the average is not equal to the average of the risks
Brent Crude and USDRUB example
№18 слайд
Содержание слайда: Diversification
Objective: lower our exposure to risk
If assets are negatively correlated, you construct a low risk portfolio
The risk of the average is not equal to the average of the risks
Brent Crude and USDRUB example
Data analysis can help you build better investment portfolios
Understanding the decision-making process is the starting point
№19 слайд
Содержание слайда: Decision-making process
What is rational decision-making?
Imagine playing a game with the following rules:
everybody picks any number between 0 and 100
the goal is to guess 2/3 of the average of the numbers picked by all participants
What is the winning strategy?
№20 слайд
Содержание слайда: Decision-making process
If everybody is rational, then you should pick 0!
Financial markets are much harder to predict
Gather information: stocks prices, what stocks move together, what is the probability of crash, etc.
Decision-making (economics): optimization of the objective function and finding stocks that fulfill your goal
Decision-making (neuroscience): social background, cultural biases, amount of sleep, stress, how good was your cappuccino today – everything is important
№21 слайд
Содержание слайда: Individual preferences
How can we formally express individual preferences?
Utility function:
Utility function reveals risk attitude
№22 слайд
Содержание слайда: Attitude to risk
Current wealth: (A)
Gamble: 50% chance to win $800 (shift to B)
Expected payoff:
Is <$400 enough to make you refrain from playing?
№23 слайд
Содержание слайда: Attitude to risk
Expected wealth:
Expected utility:
Utility of expected wealth:
Risk-aversion:
№24 слайд
Содержание слайда: Attitude to risk
Wealth that brings you to the expected utility level:
Min payment to make you refrain from gambling:
Curvature of the function defines level of your risk-aversion
Other types of attitude to risk?
№25 слайд
Содержание слайда: Conclusions
Data analysis is a core element of modern financial theory
Utility function is a way to formally describe individual preferences
Intuitively risk seems to be an obvious concept
Measuring risk is not trivial
Risk-return trade-off is the key principle of investing
Next time we’ll use real data to illustrate this trade-off
№26 слайд
Содержание слайда: Thank you!
Thank you!
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