Editor's Note: In this feature from Stockpickr, we highlight lists of stocks that have been upgraded by analysts or are experiencing activist situations or some other market moving events.

Rumors of the Day

:

AT&T

(T) - Get Report

is mulling a takeover of

EchoStar

(DISH) - Get Report

, according to

TheStreet.com

. Citing sources close to the deal, the

report has AT&T offering $55 a share, with EchoStar hoping to hold out for $65 a share. EchoStar spiked $3.09 to $46.56 while AT&T lost 31 cents to $42.52.

On

CNBC

, Punk Ziegel analyst Richard Bove downplayed the possibility of Warren Buffett buying a stake in

Bear Stearns

( BSC). The rumor had pumped Bear shares late Wednesday. Bove noted Buffett's distaste for his prior foray into the financial sector -- when he helped save Salomon Brothers in 1987. Bove also said he doubts Wachovia would be involved, saying the company has told investors that it won't have any more acquisitions. Bove said a more likely scenario would be a joint deal between

Bank of America

(BAC) - Get Report

and China Construction Bank. Bear stock dipped $2.02 to $120.98.

Today's Hot List

: A $25 billion buyout of

Sallie Mae

(SLM) - Get Report

is on the rocks. The buyer group led by J.C. Flowers, Bank of America and JPMorgan Chase does not expect to consummate the deal under its current terms, Sallie said Wednesday. Sallie vowed to fight the investors' decision. Sallie shares surged $3.93 to $48.94.

Analyst Downgrades

: UBS downgraded

Circuit City

(CC) - Get Report

to neutral from buy. The firm slashed its price target to $8.50 from $20 and lowered 2008 EPS estimates to a loss of 54 cents a share, from a loss of 47 cents a share. Shares are down 67 cents to $7.84.

Analyst Upgrades

: Goldman Sachs upgraded

Campbell Soup

(CPB) - Get Report

to neutral from sell, based on a more attractive valuation and a cooling of expectations. The firm said the company's conservative 2008 guidance offers limited downside and upped its price target to $38. The stock added 47 cents to $37.14.