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Investing Research Articles

The Ghosts of Stocks Past

In their September 2004 paper entitled “Once Burned, Twice Shy: How Naive Learning and Counterfactuals Affect the Repurchase of Stocks Previously Sold”, Terrance Odean, Michal Strahilevitz and Brad Barber examine how past experience with a stock affects the average investor’s subsequent actions regarding that stock. Using trading records for 66,465 households at a large discount broker during 1991-1996 and 665,533 investors at a large retail broker during 1997-1999, they show that the average investor tends to: Keep Reading

Testing the Halloween Effect

In their August 2005 draft paper entitled “Seasonal, Size and Value Anomalies”, Ben Jacobsen, Abdullah Mamun and Nuttawat Visaltanachoti examine the Halloween (or sell-in-May) effect (significantly higher returns during winter months than during summer months) and its relationship to the January effect and other anomalies for both equal-weighted and value-weighted U.S. market portfolios. Other anomalies they consider include those based on on firm capitalization, dividend yield, book-to-market ratio, earnings-to-price ratio and cash flow-to-price ratio. Using the Fama-French data library for 1926-2004, they find that: Keep Reading

International Fed Model Test

Fed Model proponents argue that there is an equilibrium relationship between the earnings yield of a stock index and the 10-year government bond yield. When the earnings yield is below (above) the 10-year government bond yield, the stock market is overvalued (undervalued). In their August 2005 working paper entitled “An International Analysis of Earnings, Stock Prices and Bond Yields”, Alain Durré and Pierre Giot assess the relationships among stock index prices, earnings and long-term government bond yields for 13 countries (Australia, Austria, Belgium, Canada, Denmark, France, Germany, Italy, Japan, Switzerland, The Netherlands, United Kingdom and the United States) over a 30 year period. Using current earnings for total market indexes over the period 1973-2003, they conclude that: Keep Reading

What Drives Buybacks and Insider Trading?

In their recent paper entitled “Stock Market Anomalies: What Can We Learn from Repurchases and Insider Trading?”, John Core, Wayne Guay, Scott Richardson and Rodrigo Verdi investigate whether the operating accrual anomaly (investor overreaction to the volatile accrual component of earnings) and the post-earnings announcement drift anomaly (investor underreaction to surprising earnings announcements) drive corporate buyback and personal trading decisions of company officers. These insiders are best positioned to detect the emergence of such anomalies. Using data for the NYSE and AMEX over the period 1989-2001, they find that: Keep Reading

Are Individuals Big Picture or Little Picture Traders?

In the April 2005 version of their paper entitled “One Trade at a Time: Narrow Framing and Stock Investment Decisions of Individual Investors”, Alok Kumar and Sonya Lim investigate whether individual traders take an optimizing big picture (How’s my portfolio doing?) or a suboptimizing little picture (How’s this stock doing?) approach to trading. Using a data on the portfolio holdings and trades of a sample of 41,039 individual investors (with demographics) at a large U.S. discount brokerage house during 1991-1996, they conclude that: Keep Reading

Earnings Guidance Lags the Market?

In the June 2005 update of their paper entitled “Is Guidance a Macro Factor? The Nature and Information Content of Aggregate Earnings Guidance”, Carol Anilowski, Mei Feng and Douglas Skinner investigate whether aggregate management earnings guidance predicts future aggregate earnings news and overall stock market returns. Using a sample of 31,320 annual and quarterly management earnings forecasts for 1994-2003 from Thomson First Call, they find that: Keep Reading

What Happens to Stocks Going on the Regulation SHO Threshold List?

What happens to stocks going on the NASDAQ Regulation SHO threshold list during. Does going on the list inhibit further short sales because (more than) all available shares have already been borrowed, allowing price to drift upward? Does it indicate that shorting has been overdone? Or, does appearance on the list scare off potential buyers, driving price lower? Using the  daily NASDAQ threshold lists for June 2005 and contemporaneous daily stock price data from Yahoo! Financewe find that: Keep Reading

Could Failures Point to Success?

The Regulation SHO threshold security lists for the NASDAQ and NYSE flag those stocks for which a significant percentage of short sales are not balanced by borrowed shares. What happens to returns when stocks come off the threshold list? Does coming off the list release pent-up shorting demand, driving price down? Or, does it indicate that shorting has been overdone, with prices subsequently drifting up? Using the  daily NASDAQ threshold lists for June 2005 and contemporaneous daily stock price data from Yahoo! Financewe find that: Keep Reading

Short Sellers: Contrarian or Momentum Traders?

In the July 2005 update of their paper entitled “Can Short-sellers Predict Returns? Daily Evidence”, Karl Diether, Kuan-Hui Lee and Ingrid Werner examine recently available daily short sales data to test whether short-sellers trade with or against the trend and whether they can predict future returns. Using the SEC-mandated tick-by-tick short-sale data for 2,815 Nasdaq-listed stocks from the first quarter of 2005, they find that: Keep Reading

The Disposition Effect as a Driver of Momentum

In the February 2005 update to his paper entitled “The Disposition Effect and Under-reaction to News”, Andrea Frazzini tests whether the “disposition effect” (the tendency of investors to sell stocks that have gone up, not down, in value since purchase) causes stock prices to under-react to bad news when most current holders face a capital loss and under-react to good news when most current holders face a capital gain. Using a database of the holdings of a large class of investors (mutual funds) to estimate reference prices for individual stocks, he ranks stocks according to unrealized capital gains/losses and correlates this ranking with response to corporate news and subsequent return. Based on data spanning 1980-2002, he finds that: Keep Reading

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