Here’s one stock hitting a 52-week high and one finding a 52-week low today:

New High: Yahoo

Yahoo (NASDAQ:YHOO) stock has been on its way up since late August and recently hit a new 52-week high. The current price-tag of $17.80 brings the company’s year-to-date gains into the double digits.

Shares got a boost most recently as CEO Marissa Mayer outlined her turnaround strategy for the floundering company, with the focus mainly on a move to mobile. Since Yahoo tapped Mayer as its new CEO, the stock has gained nearly 14%.

Yahoo also reported better-than-expected third quarter earnings, beating analyst estimates by 9 cents and growing revenues by nearly 2%. The company made its first acquisition under Mayer late last month, snatching up mobile startup Stamped, which makes smartphone apps.

New Low: Monster Worldwide

Shares of Monster Worldwide (NYSE:MWW) — the parent company of global online employment website Monster.com — shed more than 1% after the open today, continuing the stock’s slide that started in September.

MWW saw a 5% jump late last week after reporting earnings. Earnings came in at 9 cents per share, dwarfing expectations by 4 cents despite the fact that revenue fell nearly 11%. The big news, though, was the company is planning to sell its ChinaHR unit, as it is currently losing money.

Monster already lost all the ground gained by the news, though. Year-to-date, shares have plummeted nearly 33%, starting out just under $8 and now trading for just over $5.

As of this writing, Alyssa Oursler did not own a position in any of the aforementioned companies.