Benzinga's Top #PreMarket Gainers

shares climbed 51.48 percent to $28.60 in pre-market trading after surging 81.19 percent on Monday.

shares rose 27.29 percent to $27.80 in pre-market trading following the announcement of an all-stock merger with Konecranes.

shares rose 23.12 percent to $9.00 in pre-market trading after the company agreed to be acquired by Shenandoah Telecommunications Company

for $9.25 per share in cash or approximately $640 million.

gained 10.37 percent to $12.35 in pre-market trading after the company reported a Q2 loss of $0.08 per share on revenue of $14 million and reported positive top-line data from a Phase 2 RSV F-protein vaccine clinical trial in older adults.

shares rose 8.42 percent to $8.50 in pre-market trading after the company reported upbeat Q2 results.