Tuesday's Late Winners & Losers

Ameritrade offered a rosy outlook, making it an after-hours winner Tuesday.
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Most stocks were pulling back in late trading Tuesday after the regular session finished at spectacular highs, but

TD Ameritrade

(AMTD) - Get Report

was among the winners.

The online broker expects fiscal third-quarter income to reach the high end -- or possibly surpass -- its earlier forecast of between 24 cents and 32 cents a share for the period ending later this month. Thomson Financial's estimates call for 30 cents a share. The Omaha, Neb.-based company's shares added 34 cents, or 1.8%, to $18.78.

Biotech company

Iomai

(IOMI)

, meanwhile, jumped 9.2% on positive, "clinically significant" results for its patch-based diarrhea vaccine for travelers.

The Gaithersburg, Md.-based company said research demonstrated that travelers who received the patch were "significantly less likely" to be sickened compared with those taking placebo. Those who did get sick, said chief scientific officer Gregory Glenn, had "far milder illness" than that of the placebo group. Shares were up 18 cents to $2.13 in recent extended trading.

Elsewhere, chain-restaurant operator

Darden Restaurants

(DRI) - Get Report

posted

strong financials for its fiscal first quarter. The Orlando, Fla.-based company said continuing-operations income vaulted 17.7% to 73 cents a share on 7.9%-higher sales of $1.47 billion. Analysts were seeking just 70 cents a share on $1.46 billion in revenue.

Same-store sales at two of its restaurants, Red Lobster and Olive Garden, added 7% and 4.8%, respectively. Shares recently ticked up 26 cents, or 0.6%, to $44.10.

Wireless-equipment maker

Powerwave Technologies

(PWAV)

was among the postclose losers, after saying it will privately offer about $130 million in convertible bonds to institutional buyers. The initial purchaser has an option for another $20 million worth. Proceeds will likely go to repaying existing debt, among other general corporate purposes. Shares of the Santa Ana, Calif.-based company were off 43 cents, or 6.4%, to $6.27.