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  • Beyond Robo-Advisors

    Beyond Robo-Advisors

    Ok! advisors might be inefficient but is it enough reason for the media wave against them. Agreed that evolution has to happen, and after the industry restructured broking, sized up researchers, and the equity sales, maybe it’s time to disrupt advising. One may argue that somebody has to take the responsibility for underperformance netted for…

    July 22, 2016
  • 2000 – Ising, Non-Normality and Power Law Criticisms

    2000 – Ising, Non-Normality and Power Law Criticisms

    Despite its popularity, the power law has not been without its failures and has rather come under criticism. In the paper ‘Scale-dependent price fluctuations for the Indian stock market’, Matia K, Pal M, Salunkay H, Stanley HE (2004), the authors explained how Indian stock market may belong to a universality of class different than that…

    March 20, 2016
  • Adaptive Market Hypothesis

    Adaptive Market Hypothesis

    Adaptive Market Hypothesis (AMH) embraces Efficient Market Hypothesis (EMH) as an idealization that is economically unrealizable, but which serves as a useful benchmark for measuring relative efficiency.

    March 6, 2016
  • Fake Gucci Illusion

    Fake Gucci Illusion

    I was in Mumbai recently, meeting fund­­­ managers to understand where India was on the smart beta road. How fast was investor education evolving? What was the appetite for ETF’s? And what should be done from the regulation point of view to take the Indian markets to the next stage?

    February 13, 2016
  • Law of Ruin

    Law of Ruin

    Jules Augustin Frédéric Regnault was a French stock broker’s assistant who first suggested a modern theory of stock price changes in Calcul des Chances et Philosophie de la Bourse (1863) and used a random walk model. He is also one of the first authors who tried to create a “stock exchange science” based on a…

    January 16, 2016
  • The Duration Factor

    The Duration Factor

    John Rae’s inter-temporal choices explained the statistical nature of human behavior in 1834. However, despite the subject’s insight in the objectiveness of behavior, inter-temporal choices remains a peripheral science. This paper takes a sequential approach to question how inter-temporal choices could be behind human behavior, behavioral anomalies and even market anomalies. If these inter-temporal anomalies…

    December 11, 2015
  • Is Reversion Statistical?

    Is Reversion Statistical?

    There is no disagreement regarding the statistics of mean reversion. What goes up comes down and vice versa. Campbell and Shiller (1988) said that the simple theory of mean reversion was basically right.

    December 1, 2015
  • Information Relevance

    Information Relevance

    It was in 1968 that Ball and Brown considered the content of accounting information, the flow of information, the relevance of information, its predictive powers and its continuity and time dependence. The observed reversion was used as a validation of predictive content in earnings. This relevance was later shown to cause a drift, an anomaly,…

    November 13, 2015
  • What is Stationarity?

    What is Stationarity?

    Mean reversion has been the cornerstone in differentiating the random from the non-random behavior. Stationarity is used to identify mean reversion in a time series.

    November 9, 2015
  • The Auto Story

    The Auto Story

    The modern city I knew as a child keeps changing. There used to be more roads and fewer cars, now there are only cars. If you want to see roads and have driving pleasure you have to skip two-thirds of the day. Ok, this may be more valid coming from an emerging market like India…

    September 25, 2015
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