The stock market is constantly evolving and today, we take a look at what's driving the market. In the mid cap index, Exide Industries has been upgraded from a hold to a buy. This is a positive sign for investors as the stock is expected to perform well in the near future. The advance decline ratio in this mid cap index is also looking promising with 93 stocks advancing and only 31 declining, resulting in a 3.0x ratio. This indicates a bullish trend in the market. Investors should keep an eye on the upcoming results of some major companies in this segment. Persistent Systems, IDBI Bank, IDFC First Bank, Union Bank (I), and Oberoi Realty are all set to declare their results in the next few days. This could have a significant impact on the market and investors should stay informed. In terms of performance, the mid cap segment has been the best performer with a 1.09% increase in the BSE mid cap index. Aarti Industries has been the top performer in this segment with a return of 7.38%. On the other hand, Zee Entertainment has been the worst performer with a return of -2.58%. Some stocks in this segment have also seen an upgrade in their scores recently. Gujarat Gas, Laurus Labs, AU Small Finance, Indian Bank, and Ipca Labs have all been upgraded from mildly bullish to bullish. This indicates a positive outlook for these stocks and investors should consider them for their portfolio. Overall, the mid cap segment is showing promising signs and investors should keep a close watch on these stocks for potential opportunities. With the market constantly changing, it is important to stay updated and make informed decisions.