Bayer up 4% pre-market on Roundup case win
** Bayer'd BAYGn.DE shares are up 4% in pre-market trade after the German drugs-to-crop chemicals group won a trial in the United States over claims by three women that its Roundup weedkiller caused their cancer
** A St. Louis jury unanimously ruled for Bayer-owned Monsanto in the first case to go to trial after June's Supreme Court ruling
** "While one verdict should not be over-extrapolated, we think it provides a positive first datapoint on plaintiffs' remaining litigation routes," Jefferies writes
** Stock tops Germany's blue-chip index .GDAXI