I have negligible experience in trading oil. However, I do have some experience at chart-reading. Looking at CL futures, October 2018 was an easy short trade. Those who shorted will enjoy the ride with little whipsaw. It was an easy trade. I am surprised that great oil traders, such as this hedge fund manager Pierre Andurand, can lose so much in an easy trading month. I am not gloating at his losses as I'm sure he is savvier and smarter than me. He is the rich one, not me. What puzzles me is how can the best traders lose so much in a month which looks like an easy month to me? I don't think I'm alone. Any one of you can open up CL chart and can see that the short trade was an obvious and easy one to ride. CL is liquid and it should not be difficult to close position when a trader makes a mistake. It's not like the 2915 CHF debacle which gapped up in a single day. Hard to imagine that an experienced trader can lose 20% in a single month. What did I miss? What mistakes could this top-notch oil trader make to lose so much in a good month? https://www.wsj.com/articles/oil-hedge-fund-giant-hammered-in-crudes-slide-1542292021 Pierre Andurand, who runs one of the last big oil-focused hedge funds, took significant losses in October as petroleum prices cratered. Pierre Andurand, who earlier in 2018 predicted oil could soon hit $100 a barrel, suffered the largest-ever monthly loss of his flagship fund in October. The $1 billion Andurand Commodities Fund lost 20.9% last month, taking the fund down more than 12% for the year, according to numbers sent to investors and reviewed by The Wall Street Journal.