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A test of the investor's daily stock ranking system - University of Louisville - College of Business : University of Louisville – College of Business Skip to main content

A test of the investor’s daily stock ranking system

John P. Nelson, PhD D. Olson C. Witt C. Mossman
The Financial Review. March 9, 2005

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Abstract

This paper examines the profitability of trading strategies derived from stock rankings published in Investor’s Business Daily. The best system provides market‐adjusted abnormal monthly returns of 1.81% from buying S&P 500 stocks, and a 3.18% abnormal return on an arbitrage portfolio. Stocks selected for trading have above average volatility, but a portion of abnormal return may be a reward for identifying stocks with short‐run sustainable price momentum. Results seem indicative of market inefficiency, but the phenomena may be temporary since abnormal returns are lower during the second half of the data set.

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