The stock market is constantly fluctuating, and today is no different. In the large cap index, we have seen some significant changes in technical calls for various stocks. The top performers in this segment have been Tube Investments, with a return of 5.39%, while the worst performer has been Zee Entertainment with a return of -2.37%. Overall, the large cap (BSE 100) has shown a positive trend, with a 0.63% increase. In fact, in the last 5 days, it has seen a significant rise of 2.25%. This is a clear indication of the market's current bullish sentiment. Looking at the advance-decline ratio, we can see that out of the 100 stocks in this segment, 74 are advancing while only 26 are declining. This translates to a ratio of 2.85x, further reinforcing the positive trend in the market. But what's driving this market today? The answer lies in the recent upgrades in stock scores for some of the top companies in this segment. Hindalco Industries has been upgraded from Hold to Buy, while M & M, Britannia Industries, IRCTC, Vedanta, and Bharat Electronics have all been upgraded from mildly bullish to bullish. These upgrades are a result of the companies' strong performance and growth potential, making them attractive investments for traders and investors. With the market showing a positive trend and these top companies receiving upgrades, it's no surprise that the large cap segment is the best performer today.