Sentences with phrase «negative abnormal returns»

Conversely, when a security is deleted from an index, its price falls, resulting in negative abnormal returns.

Not exact matches

Material News - Material News is prior studies indicating insider buying, selling, activity precedes positive, negative, abnormal returns that persist over relatively long horizons.

Using a differences - in - differences methodology, we find that politically active firms saw an increase in their stock's volatility along with negative long - term abnormal stock returns upon the release of the NCR.

We find that the positive returns at announcement are not reversed over time, as there is no evidence of a negative abnormal drift during the one - year period subsequent to the announcement.