On a day-to-day basis, most stock tend not to have dramatic price movements. However, material news/information that is fundamental to an industry, sector or stock's business does get released periodically. This type of news has the potential to move a stock by several percentage points (in either direction). While it is a measure of prestige, a stock's inclusion into the S&P500 does not protect the stock to downward movements.
But even if a stock has already moved, it might still warrant a look. After good news, a stock may increase in value, but this momentum can often continue on for more upside. Likewise, bad news often knocks down a stock's price more than is warranted, causing it to sell at bargain levels until the price moves back up.
Check out which S&P 500 components made the biggest moves in January. By comparison, the entire S&P 500 was up 3.16% and the DJIA was up +3.26% over the same period. (For related reading, see How Now, Dow? What Moves The DJIA?)
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January's Best-Performing S&P500 Stocks
|NVIDIA Corporation (Nasdaq:NVDA)||+58.38%|
|Micron Technology Inc. (NYSE:MU)||+34.78%|
|Intuitive Surgical, Inc. (Nasdaq:ISRG)||+30.35%|
|Marathon Oil Corporation (NYSE:MRO)||+23.73%|
|Weyerhaeuser Co. (NYSE:WY)||+23.67%|
January's Worst-Performing S&P500 Stocks
|Monster Worldwide Inc. (NYSE:MWW)||-30.97%|
|SUPERVALU Inc. (NYSE:SVU)||-23.58%|
|Tellabs, Inc. (Nasdaq:TLAB)||-21.25%|
|RadioShack Corp. (NYSE:RSH)||-19.50%|
|F5 Networks, Inc (Nasdaq:FFIV)||-18.15%|
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