NEW YORK (AP) â¿¿ A look at the 10 biggest percentage gainers on New York Stock Exchange at 1 p.m.:

HealthSpring Inc. rose 33.7 percent to $53.70.

Schweitzer Mauduit International Inc. rose 17.4 percent to $69.94.

Silvercorp Metals Inc. rose 16.9 percent to $9.49.

SemGroup Corp. rose 16.3 percent to $27.39.

Fusion-io Inc. rose 15.6 percent to $30.59.

USG Corp. rose 11.1 percent to $9.31.

Meritor Inc. rose 9.5 percent to $8.90.

MI Homes Inc. rose 9.4 percent to $7.09.

Titan International Inc. rose 9.3 percent to $20.86.

Barnes & Noble Inc. rose 9.0 percent to $11.53.
Copyright 2011 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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