HEADLINE STOCKS-Some U.S. stocks on the move on Sept. 1

(Updates to after the open, adds Novavax, America's Car-Mart, Builders, Gander, Icagen, Sotheby's)

NEW YORK, Sept 1 (Reuters) - Some U.S. stocks on the move on Tuesday:

NOVAVAX INC (NVAX.O), $7.31, up 21 pct

The company said its seasonal flu vaccine candidate was well-tolerated in a midstage trial. [ID:nBNG319839]

ICAGEN INC (ICGN.O), $1.40, up 48 pct

The company said a midstage study of its experimental treatment for allergic asthma showed the drug reduced the asthmatic response of patients to inhaled allergen. [ID:nBNG501114]

SOTHEBY'S (BID.N), $15.89, up 0.9 pct

The company entered into a three-year $200 million credit agreement with lenders. [ID:nBNG491895]

AMERICA'S CAR-MART INC (CRMT.O), $22.83, up 11 pct

The company reported first-quarter earnings that beat expectations. [ID:nBNG490359]

GANDER MOUNTAIN CO (GMTN.O), $5.14, down 9.1 pct

The company reported a second-quarter loss that widened from the prior year. [ID:nBNG503176]

BUILDERS FIRSTSOURCE INC (BLDR.O), $6.93, down 9.9 pct

Two large private equity investors in the company unveiled a plan to recapitalize the money-losing provider of residential construction products, saying changes are needed to position it for a housing market recovery. [ID:nN01478490]

ACADIA PHARMACEUTICALS INC (ACAD.O), $1.76, down 70 pct

The company said its drug to treat psychosis related to Parkinson's disease, which it is co-developing with Biovail Corp (BVF.TO) (BVF.N), failed to meet its primary goal in its first pivotal late-stage trial. [ID:nBNG483104]