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Security Analysts And Capital Market Anomalies, Li Guo, Frank Weikai Li, K.C. John Wei
Security Analysts And Capital Market Anomalies, Li Guo, Frank Weikai Li, K.C. John Wei
Research Collection Lee Kong Chian School Of Business
We examine whether analysts use information in well-known stock return anomalies when making recommendations. We find results contrary to the common view that analysts are sophisticated information intermediaries who help improve market efficiency. Specifically, when analysts make more favorable recommendations to stocks classified as overvalued, these stocks tend to have particularly large negative abnormal returns ex post. Moreover, analysts whose recommendations are more aligned with anomaly signals are more skilled and elicit greater recommendation announcement returns. Our results suggest that analysts' biased recommendations could be a source of market frictions that impede the efficient correction of mispricing.
Investigating The Impact Of Widening Price Limits On Volatility: The Experience Of The Nigerian Stock Exchange, Mohmmed A. Yadudu
Investigating The Impact Of Widening Price Limits On Volatility: The Experience Of The Nigerian Stock Exchange, Mohmmed A. Yadudu
Bullion
This paper empirically evaluates the impact of return volatility from widening price limits from 5% to 10% on the Nigerian Stock Exchange(NSE) on September 18, 2012 using a Stochastic Volatility model in an event study framework. Using daily trading data from September 2010 to September 2014, the study finds that widening of price limits in the NSE has not increased volatility as feared by some regulators. Stocks with higher free floats and institutional ownership display lower volatility when price limits are widened. This suggests that smaller stock exchanges can improve market efficiency by widening price limits without increasing volatility. The …