7 Stocks You Need to Know for Friday

Rising medical costs sent healthcare stocks lower across the board on Thursday, with stocks like UnitedHealthGroup (UNH | Quote | Chart | News | PowerRating) losing more than 7%.

Broadcom (BRCM | Quote | Chart | News | PowerRating) shares benefited from a positive analyst report out of Lehman Brothers that suggested sales of the Nintendo Wii video game console in the second half of 2008 would boost demand for Broadcom's semiconductor chips.

A Goldman Sachs recommendation for investors to sell shares in both Sirius Satellite Radio and XM Satellite Radio (XMSR | Quote | Chart | News | PowerRating) sent both stocks reeling on Thursday.

An analyst upgrade from Citigroup (C | Quote | Chart | News | PowerRating) put a "buy" rating on shares of American International Group (AIG | Quote | Chart | News | PowerRating), which were up nearly 5% on Thursday.

Carnival Cruise Lines (CCL | Quote | Chart | News | PowerRating) beat analyst estimates by a whopping $0.18 per share this morning in its earnings announcement before the open.

Concerns that Motorola (MOT | Quote | Chart | News | PowerRating) may have difficulties with the planned spin-off of its handset unit encouraged traders to sell the stock on Thursday. Motorola lost nearly 6%.