(Bloomberg) -- Just before a hotly contested US election considered a toss-up, options traders across markets appear to be reducing risk and bracing for more volatility.Most Read from BloombergIstanbul Tries Free Public Transit to Help Job SeekersThe Answer To Making Cities More Family-Friendly? CourtyardsIs Denver’s Big Bet on E-Bikes Paying Off?In Warsaw, Falling Road Deaths Signal a Traffic Safety TurnaroundChicago Mayor Seeks Property Tax Hike, Breaking Campaign VowEquity options volatility