Robbins & Myers, Inc (RBN) added 7.3% or $1.36 to $20.00 after the diversified manufacturer said first quarter sales rose 3% to $178 million from $173.5 million a year ago. Net income in the quarter rose 24% to $17.2 million or 50 cents per diluted share compared to net income of $13.9 million or 40 cents per share a year ago.

Ruby Tuesday, Inc (RT) gained 7.3% or 11 cents to $1.60 after the restaurant companies said second quarter revenues fell 9.7% to $289.8 million from $320.9 million a year ago. Net loss in the quarter was $37.4 million or 73 cents per diluted share compared to net loss of $10.4 million or 20 cents per share a year ago. Comparable same store sales fell 10.8%.

Sonic Corp (SONC) declined 10.4% or $1.19 to $10.21 after the restaurant chain said first quarter revenues fell 3.2% to $184.1 million from $190.2 million a year ago. Net income in the quarter fell 48% to $7.1 million or 12 cents per diluted share compared to net income of $13.6 million or 22 cents per share a year ago. Comparable same store sales fell 3.6%.

The Shaw Group Inc (SGR) gained 10.9% or $2.54 to $24.72 an engineering and construction company reported first quarter sales rose 12% to $1.9 billion from $1.7 billion a year ago. Net loss in the quarter was $39.9 million or 48 cents per diluted share compared to net income of $2.2 million or 3 cents per share a year ago.

Sears Holdings Corporation (SHLD) rose 18.5% or $7.50 to $48.05 after the retailer said December domestic same-store sales fell 7.3%, with Kmart sales down 1.1% and Sears domestic sales falling 12.8%. Sears added that it expects to earn between $300 million and $380 million, or $2.44 and $3.09 a share, for the January 31 ending quarter, compared to $426 million, or $3.17 a share, in the year-earlier quarter.

Thinkorswim Group Inc (SWIM) rose 46.0% or $2.60 to $8.25 after the online brokerage and investor education company that TD Ameritrade Holding Corp said on Thursday it will buy thinkorswim Group Inc for $606 million.

Wal-Mart Stores, Inc (WMT) fell 8.9% or $4.99 to $50.55 after the largest retailer surprised investors by turning in December sales that missed expectations and lowered its fourth quarter earnings estimate.

WD-40 Company (WDFC) decreased 5.3% or $1.44 to $25.35 after the household lubricant and cleaning products maker said first quarter revenues rose 5.6% to $83.6 million from $79.2 million a year ago. Net income in the quarter rose 24% to $7.7 million or 46 cents per diluted share compared to net income of $6.2 million or 36 cents per share a year ago.