L2 - The Nature and Function of the Financial System Flashcards
Are Market Prices Fair?
Fair Market Price –> Amount at which an asset would change hands between two parties, where both have knowledge of the relevant facts –> invisible hands of the market
- it means that prices reflect the underlying fundamental values, and thus any thing factors that make up what somthing costs, is reflect in its prices –> markets are informationally efficient
- How do we know the prices on the market are correct? –> because of Efficient Market Hypothesis?
What is Efficient Market hypothesis?
- The Efficient Market Hypothesis, or EMH, is an investment theory whereby share prices reflect all information and consistent alpha generation is impossible.
- Theoretically, neither technical nor fundamental analysis can produce risk-adjusted excess returns, or alpha, consistently and only inside information can result in outsized risk-adjusted returns.
- According to the EMH, stocks always trade at their fair value on stock exchanges, making it impossible for investors to either purchase undervalued stocks or sell stocks for inflated prices.
- As such, it should be impossible to outperform the overall market through expert stock selection or market timing, and the only way an investor can possibly obtain higher returns is by purchasing riskier investments.
What is alpha is the financial markets?
Simply defined, alpha is the excess return (also known as the active return), an investment or a portfolio of investments ushers in, above and beyond a market index or benchmark that represent the market’s broader movements.
What is beta in the financial markets?
Beta is a measurement of the volatility, or systematic risk of a security or portfolio, compared to the market as a whole. Often referred to as the beta coefficient, beta is a key component in the capital asset pricing mode (CAPM), which calculates the theoretically appropriate required rate of return of an asset, to make it worth incorporating into an investment portfolio.
What is the framework required for markets to be efficient?
- are prices published with great frequency
- is active trading occuring (i.e. high volumes of transcactions)–> millions of pounds trading at a push of a button
- is financially important information rapidly avialable to all trades
- Is the act of trading low cost (not the cost of the goods but the cost of making a transaction – we say there is low friction)?
- frictionless environment is where there is no cost to trade –> this may be an assumption for a financial model but not true in the real work
What is a market called when it meets the ‘fair price framework’?
semi-strong form efficient –> i Semi-strong form efficiency is an aspect of the Efficient Market Hypothesis (EMH) that assumes that current stock prices adjust rapidly to the release of all new public information, thus eliminating the use of fundamental or technical analysis to achieving a higher return –> means that the prices quoted are very likely to be good or (as fair) as they can be
- this gives confidence to us as investors
what is strong form efficient?
Strong form efficiency is the most stringent version of the efficient market hypothesis (EMH) investment theory, stating that all information in a market, whether public or private, is accounted for in a stock’s price.
Practitioners of strong form efficiency believe that even insider information cannot give an investor an advantage. This degree of market efficiency implies that profits exceeding normal returns cannot be realized regardless of the amount of research or information investors have access to.
Why are markets not strong form efficient?
- Having correct/fair prices does not mean necessarily imply that all deals will be profitable
- Correct prices are correct based on the information at the time of the transaction
- They do not include foresight
- Price are volatile - they have risk –> random factors e.g. tweets
- Risk is there because of our inabiltiy to predict the future with precision
What is the notion of market efficiency?
- Market efficiency is a cornerstone of modern financial theory.
- Fama (1967, 1970) is credited with promulgating the notion of market efficiency but the concept predates his work. –> this was founded over a century before by Samuelson
- Nevertheless, he did extend the concept considerably.
- Fama identified three types of market efficiency: Weak form efficiency, semi-strong form efficiency and strong form efficiency.
- A market is weak form efficient when current asset prices reflect all information contained in past prices of the asset. This means that past price behaviour of an asset cannot be used to predict the future price of the asset.
- A market is strong form efficient when the price of an asset reflects all information in the public domain about the asset.
- A market is strong form efficient when all public and private information about an asset.
What is the efficient market paradox?
- The EMH (semi-strong form) claims that developed securities’ markets are informationally efficient.
- “Efficient” in this sense implies that prices quoted on the market are correct and reflect all available public information.
- but to be efficient, the market relies on traders to believe that it is not efficient and trade securities they believe to incorrectly priced in an attempt to make arbitrage gains
- So the market is efficient only because there are people who believe it isnt
- From the prespective of traders, the paradox is that they might believe the market is not efficient, but by acting on those beliefs they actually make the market efficient
What markets are usually efficient?
- those in development market economies
- in economies that are developing from a planned (communist economy) with by informationally inefficient
- the aim here is to see if those economies are moving to efficiency
What is an interesting implication of the market efficiency paradox?
- One interesting implication of the efficient market hypothesis as explained here is that whilst most (all) analysts believe the asset traded on the market is either under-priced or over-priced, the market price is actually ‘correct’.
- by their action (buying low and hoping to sell high and vice versa) traders actually propel the market to its fundamental (fair) equilibrium vlaue. The market is efficient only because traders believe it isnt
What is the Grossman-Stiglitz Paradox?
Having discussed the Efficient Market Paradox, we seem now to be agreed that market prices are sufficiently accurate to be trusted.
But…..
If everyone thinks that the market prices are correct then why would anyone bother to analyse securities, financial analysis, technical analysis chartism)
- Yet these types of analyses are performed on an industrial scale
A well known joke that illustrates this is:
An economist and his friend are walking down the street and the economist sees, but walks over, a $100 bill on the pavement. The friend asks why; and the economist replies: “If it were real, someone would have already picked it up”.
Why in an efficient market can people make money and seem to predict the direction with an acceptable probabiltity?
- priced at a discount
- long-term trends (economy is growing so the value of the stock market will be too)
- human still make mistakes (fat fingers - HBSC who put in the price of the order into the volume of the order causing their stock to drop 4%)
- data anomalies (at the smallest of time frames with UHFT)
- diversification can reduce the risk of investing making it easier to calculate future return and make it sustainable in the long term
When experimenting whether a group of people can predict the direction of the stock market what was found?
- even if an individual got it right everytime or wrong everytime
- on average everyone would be right - that is an efficient market
What are the 3 broad function of a Financial System?
- A monetary system which is concerned with creating and transferring money.
- Financial institutions which are concerned with saving and lending/investing
- Financial markets which are concerned with raising of funds and transferring these between borrowers/investors and lenders.
What are the overall Functions of a Financial System? (1)
- Manage the payments and settlements system
- Provide mechanisms for borrowing and lending
- Creation of financial assets and liabilities
- Create financial instruments and contracts
- Mechanism for pooling of funds and financial large-scale projects –> also risk
- Bridge different portfolio preferences
- Mechanisms for transferring resources: time, agents, geography
- Allocation of funds to most efficient use
What are the overall Functions of a Financial System? (2)
- Manage uncertainty
- Risk transformation –> pooling assets makes short term rise into long term risk
- Risk transfer: ability / willingness
- Price risk –> what if i want my money out now instead of water for a bond to mature.
- Facilities and markets to enable wealth-holders to change the structure of their portfolio of assets and liabilities
- Deal with asymmetric information problems: resolution of moral hazard e.g. taking out insurance on your car does it make you a less capable driving? if taking out insurance encourages you to drive less carefully its a moral hazard
- Specialist services