Okay, so there is a big company called Alcoa that makes stuff from aluminum. People who own shares of this company are happy because they think the company did really well and made more money than expected. So the price of those shares went up. Also, there are 20 other companies whose share prices changed before the market opened today. Read from source...

1. The article is written in a sensationalist style that attempts to grab the reader's attention by exaggerating the importance of the stock movement and using phrases like "Why Alcoa Shares Are Trading Higher". This creates an impression that there is some significant news or event that caused the stock price to increase, when in reality it may be a minor fluctuation.
2. The article does not provide any context for the pre-market trading activity, such as what the previous closing price was, or how much the stock increased during the pre-market session. This makes it difficult for readers to understand the magnitude of the change and whether it is meaningful or not.
3. The article mentions that Alcoa reported better-than-expected sales for its fi, but does not specify what the expectations were, or how much the sales exceeded them. This information is important for readers to evaluate the performance of the company and compare it with other competitors in the same industry.
4. The article lists 20 other stocks that are moving pre-market without providing any explanation or reason for their movement. This creates a sense of confusion and uncertainty, as readers may wonder why these stocks are mentioned and what relation they have to Alcoa's performance. It also does not help the reader to understand the broader market trends or factors that may be influencing the stock prices.
5. The article ends with a call-to-action for readers to make a comment, which seems inappropriate and irrelevant given the content of the article. A more appropriate ending would have been to provide some conclusions or insights based on the data presented, or to direct the reader to other sources where they can find more information or analysis.