Stocks fluctuated on Tuesday as oil prices fell on worries over a deal among major oil-producing nations. OPEC production rose in November, making adhering to an output limit more difficult come January. U.S. factory orders increased in October by their most in 18 months. The index rose by nearly 3%, a positive sign for manufacturing which has suffered from a strong U.S. dollar and weak global demand. Michaels (MIK - Get Report) tumbled after missing analysts' estimates in its third quarter. The arts and crafts retailer reported a surprise 2% drop in comparable-store sales compared to a forecast increase. Michaels also offered downbeat guidance for its holiday quarter. Roper Technologies (ROP - Get Report) agreed to acquire biz software developer Deltex in an all-cash deal worth nearly $3 billion. The acquisition is expected to close before year's end. TheStreet's Keris Lahiff reports from Wall Street.