(Bloomberg) -- A top Wall Street regulator is considering changes to a weekly report covering the position of traders just as prediction market exchanges and offshore venues start to offer more contracts in the oldest corner of the derivatives market.Most Read from BloombergUS Seeks to Deploy Hypersonic Missile for the First Time Against IranTwo NJ Malls Separated by Just Four Miles — and Very Different FatesTrump Says Iran Blockade ‘Incredible’ as Pump Prices Keep RisingNorth Korea Confirms Sui