Morning Market Gainers

surged 61.92 percent to $8.42 after the company agreed to be acquired by an affiliate of Hach Company for $8.50 per share.

gained 32.58 percent to $27.51 after the company reported positive data from ongoing Phase 1 study of Tazemetostat in relapsed or refractory NHL.

shares surged 24.49 percent to $60.18.

made a proposal to merge with Williams Companies for $53.1 billion in an all equity transaction, including debt and other liabilities. However, Williams rejected the offer from Energy Transfer Equity.

climbed 19.67 percent to $2.19 after the company announced plans to launch up to six new genetic cancer tests this year.

shares jumped 16.07 percent to $3.90 after the company announced the receipt of a preliminary non-binding 'going private' proposal for $4.43 per share.

shares jumped 13.11 percent to $36.76 after rising 9.50 percent on Friday.

shares surged 8.12 percent to $59.00 after dropping 20.41 percent on Friday.

shares rose 7.08 percent to $166.25 following the announcement of a rejected $184 per share bid from

.

shares gained 2.44 percent to $22.25 after gaining 8.44 percent on Friday.