If you judge CEO’s by their company’s share price then Yahoo CEO Marissa Mayer has turned around Yahoo fortunes. When she joined Yahoo last year, the share price was around $15 and it has risen 74.4 percent to land at $27.24. To date, Mayer is responsible for 17 out of the 83 mergers and acquisitions in Yahoo’s history, or more than 20 percent.

She made headlines when the company banned employees from working from home. Mayer, who formerly worked at Google, has made a host of changes at Yahoo. Despite generating profits every quarter since she joined Yahoo, revenue has remained about static and Yahoo hasn’t convinced advertisers to spend more money to reach users. In return, advertisers don’t want what Yahoo is selling.

In my opinion, Yahoo looks fresh and hungry again, one report mentioned that morale within the company has improved. More people are applying to work at Yahoo and employees are sticking around. I give Marissa Mayer credit for trying something new. However, Yahoo still lags behind Google, Apple, Amazon, Facebook, and Microsoft when it comes to innovation.

I think it will take another year for her work behind the scenes to finally pay off. Yahoo business saw continued stability, improved stock performance, high-profile acquisitions (Tumblr), the company launched more products than ever before, revamped applications, introduced a lot of new product. She certainly has improved the company, but not the most important part of it all “Revenue”

According to YouGov BrandIndex, a poll that measures consumer perception of brands, Yahoo’s score has dropped since Mayer joined as a CEO last year. The company brand is still losing ground with consumers. But Yahoo still brings hundreds of millions of unique visitors every month.

Yahoo! has tremendous brand equity despite its failures. Marissa Mayer has brought back the winning attitude that Yahoo lacked for years. She has worked at Google for 13 years, so she is quite familiar with Yahoo’s competition. In 2012, she number 14 on the list of America’s most powerful businesswomen by Fortune magazine. If anyone can save Yahoos brand, it’s probably Marissa Mayer.

Marissa Mayer is now the youngest CEO of Fortune 500 company. This gives Yahoo an edge. Much of Mayer’s focus in her first year was resolving legacy issues, including cutting costs, and changing the company’s focus and culture. Clearly, these are not easy changes to make.

Yahoo! isn’t the only company that saw declines in their brand value, but they have taken major steps reviving their brand. Yahoo needs to focus more in the mobile space. I bet Marissa Mayer can still save Yahoo and bring it back into what it once was. It might take some time but there is definitely a bright future.