Biggest Losers (LINC) (ZOLT) (ATW) (KOP) (OGE) on May 6

Among the big, negative movers on Friday, May 6, were Lincoln Educational (LINC), Zoltek Companies (ZOLT), Atwood Oceanics (ATW), Koppers Holdings Inc (KOP) and OGE Energy Corp. (OGE).

Lincoln Educational (LINC) was down $0.92, to close at $15.14, a loss of 5.73 percent.

Zoltek Companies (ZOLT) fell $0.91 on the day to close at $10.80, a loss of 7.77 percent.

Atwood Oceanics (ATW) dropped $0.90 to close at $40.11, a loss of 2.19 percent.

Koppers Holdings Inc (KOP) declined $0.89 to close the session at $41.16, a loss of 2.12 percent.

Oge Energy Corp. (OGE) plunged $0.89 to end the day at $50.42, a loss of 1.73 percent.