/ZN /UB /ZB contracts getting killed today..waay more volatility than the ES contract despite the margin requirements of ES being higher. UB for example has a $6k requirement and already went though $4k of that today. I were the broker I would put a $15k margin requirement at least on UB. It's such a big contract and so volatile. Each tick is $32. Long term bonds are so dangerous...ppl are lulled into complacency thinking it's safe 'government debt'. That's how brokers and traders blow up.