What is the effect of good and bad “news” on stock market prices?

The following are the requirements: Data: to collect the Share price data You need to decide if you want daily prices or something averaged over a period,or measures of volatility that you will construct form the raw price data. You will need to construct ‘news’ events that might have affected the share price –good and bad news. This may require piecing together lots of info from media coverage. You may find it useful to construct a time-line of events (speeches, press releases, real events) and see if any of those are followed by drops or rallies in the share price.