Let's check out the Yahoo Finance charts of the day.
Mattel (MAT): Shares are down in early trade, at around 2.9%. The toy maker was downgraded to "neutral" from "buy" at UBS, which still sees value in the brand but notes the stock's 35 percent jump from its March lows despite little change in fundamentals.
Foundation Medicine (FMI): Shares up here, around 28.5%. Roche Holding said it would pay $2.4 billion to buy the shares it doesn't already own in Foundation Medicine. The Swiss drug giant presently owns 57% of Foundation and will pay $137 a share for the U.S based company.
Sirius (SIRI): Shares down here, at around 1.7%. The satellite radio operator was downgraded to "hold" from "buy" at Pivotal Research in a valuation call. Pivotal's target price for the Sirius stock remains at $7.75 per share.
For more on today's big stock movers check out the Final Round, live at 3:55 p.m. ET, right here on Yahoo Finance.