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Institutional Investors, Intangible Information and the Book-to-Market Effect Discussion

Institutional Investors, Intangible Information and the Book-to-Market Effect Discussion. Sigbjørn Atle Berg Venastul, 15 February 2008. Starts from the results of Daniel and Titman (2006). D&T identifies tangible and intangible returns per share:

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Institutional Investors, Intangible Information and the Book-to-Market Effect Discussion

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  1. Institutional Investors, Intangible Information and the Book-to-Market EffectDiscussion Sigbjørn Atle Berg Venastul, 15 February 2008

  2. Starts from the results ofDaniel and Titman (2006) • D&T identifies tangible and intangible returns per share: • Each year a cross-section regression of past market return on initial book-to-market and past book return • Intangible past returns are identified as the residuals of this regression • Returns are negatively related to past intangible return, but not to past tangible return • Thus return reversals (and predictability) are caused by reversals in the intangible return • this causes the book-to-market effect • no evidence of reversals in the tangible return SAB/070908

  3. The message of the present paper • Institutions trading in the same direction (herding) drives the reversion of intangible returns • D&T: Return reversion is only found in stocks with high intangible returns • New contribution: Return reversion is due to institutional herding SAB/070908

  4. Evidence I • VAR study of the relationship between • total returns • intangible returns • institutional ownership • Tests for Granger causality • Intangible returns cause institutional ownership • Institutional ownership does not cause intangible return SAB/070908

  5. Evidence II • Constructs portfolios with stocks sorted by intangible return and institutional herding • Computes the return differential between high and low intangible return stocks • controlling for the Fama-French factors • Return differential is statistically significant only when comparing portfolios with a high level of institutional herding • Thus the book-to-market effect only exists for stocks with high levels of institutional herding • This is not due to the size effect: • Stocks with a high level of institutional herding are on average larger than stocks with low institutional herding SAB/070908

  6. Do I believe the results? • Many institutions use a core-satellite approach to investing • holds the market, trades in stocks that the manager believe is under- or overvalued • Relatively few stocks are actively traded by each manager • Manager reward structures benefit trading in more volatile stocks • May easily be the same for a number of institutions; high institutional herding will result SAB/070908

  7. Some minor comments • The measure of herding • Counts the number of institutions that are net buyers or sellers • Does not necessarily reflect the volumes traded • The measure of trading • Difference in holdings over a full year • Round trips may be more frequent than in quarterly data • In particular in stocks with high institutional herding, which may be more actively traded SAB/070908

  8. A final question: Aren't institutional investors likely to drive most anomalies in the stock market? • Non-retail trading accounts for 96% of the total trading activity on the NYSE • Footnote page 1 • Institutions essentially represent the market? SAB/070908

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