Based on research of important variables that traders consider, I narrowed down to this list:
- Time
- This is essentially the main standard that is used to benchmark any of the other variables above. The crucial aspect of technical analysis involves looking at how patterns evolve, and these trends are captured by the time variable - usually daily.
- Closing Stock Price
- This is subject to least volatility since intra day prices vary depending on trading volume at that time, and is not easily comparable. For trend analysis, the closing stock price fully prices in the activities that happened throughout the day, and allows for comparison between different stocks.
- Volume
- The volume indicates the amount of activity that stock has had in a day. Usually, high volumes of trade are correlated with fluctuations in the closing stock price, and also possible external events that have caused this sudden increase/decline in activity.
- Percentage change in price vs. percentage change in index
- This is an important metric to gauge the correlation between the stock and the market index (either the S&P500 or Dow Jones). This correlation is a proxy for the 'beta' of the stock, hence indicating the variance or movement of the stock compared to the market.
- Last Twelve Monts (LTM) Return
- At any point in time, this metric will allow a trader to see the return of the stock that past year. For example, the LTM return on March 10th 2012 will show the return that the stock has yielded since March 10th 2011. This single metric alone can raise the necessary red flags, and give an indication of how the stock, and thus the company has been performing.
- Free float percentage
- This measures the liquidity of the stock in the open market. The free float shows what percentage of the total shares authorized are out open in the public, and available for trade. The free float can be looked at in conjunction with price and volume, to examine potential correlation and causality that can happen when companies decide to repurchase or issue stocks into the market.
- Price to Earnings Ratio
- The P/E ratio is a rough metric to gauge whether the stock is over or undervalued. If the P/E ratio is well below industry averages, it is undervalued, and hence might be a good longterm investment. Conversely, a high P/E ratio indicates an opportunity for traders to short the stock.