How machine learning can improve money management<
By Michael Maiello – Two disciplines familiar to econometricians, factor analysis of equities returns and machine learning, have grown up alongside each other. Used in tandem, these fields of study can build effective investment-management tools, according to City University of Hong Kong’s Guanho Feng (a graduate of Chicago Booth’s PhD Program), Booth’s Nicholas Polson, and Booth PhD candidate Jianeng Xu.
The researchers set out to determine whether they could create a deep-learning model to automate the management of a portfolio built on buying stocks that are expected to rise and short selling those that are expected to fall, known as a long-short strategy. They created a machine-learning algorithm that built a long-short equity portfolio from the top and bottom 20 percent of a 3,000-stock universe.
They ranked the equities using the five-factor model of Chicago Booth’s Eugene F. Fama and Dartmouth’s Kenneth R. French. Fama and French break down the components of stock returns over time into five factors: market risk, in which stocks with less risk relative to their benchmark outperform those with more risk; size, in which companies with small market capitalizations outperform larger companies; value, where a low price-to-book ratio outperforms high; profitability, where higher operating profits outperform; and reinvestment, in which companies that reinvest outperform those that don’t. more>
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Tagged Business improvement, Capital, Chicago Booth, Financial crisis, Skills
By Sanjukta Paul – Where does economic power come from? Does it exist independently of the law?
It seems obvious, even undeniable, that the answer is no. Law creates, defines and enforces property rights. Law enforces private contracts. It charters corporations and shields investors from liability. Law declares illegal certain contracts of economic cooperation between separate individuals – which it calls ‘price-fixing’ – but declares economically equivalent activity legal when it takes place within a business firm or is controlled by one.
Each one of these is a choice made by the law, on behalf of the public as a whole. Each of them creates or maintains someone’s economic power, and often undermines someone else’s. Each also plays a role in maintaining a particular distribution of economic power across society.
Yet generations of lawyers and judges educated at law schools in the United States have been taught to ignore this essential role of law in creating and sustaining economic power.
Instead, we are taught that the social process of economic competition results in certain outcomes that are ‘efficient’ – and that anything the law does to alter those outcomes is its only intervention.
These peculiar presumptions flow from the enormously powerful and influential ‘law and economics’ movement that dominates thinking in most areas of US law considered to be within the ‘economic’ sphere.
Bruce Ackerman, professor of law and political science at Yale University, recently called law and economics the most influential thing in legal education since the founding of Harvard Law School.
The Economics Institute for Federal Judges, founded by the legal scholar Henry Manne, has been a hugely influential training program in the law and economics approach. more>
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Tagged Business improvement, Capital, Congress Watch, Government, Inequality, Internet, Law