FYI, the informative part starts a bit after 6:00.
Some commentary on reddit:
After getting wrecked by Crude Oil and Natural Gas this week, “fund manager” James Cordier breaks down during his weekly report (he actually looks like he’s going to hang himself) : wallstreetbets
He got hit by the moves in fossil fuels. Apparently he was selling deep OTM naked puts and deep OTM naked calls and didn't have the capital to cover the costs on the strong moves -- badly overleveraged.
It looks like he lost on the naked calls on NG, which are super dangerous, and didn't have them properly protected with more-distant calls. NG spiked up this week. Simultaneously he had naked puts on oil, which cratered this week.
Never sell naked calls ever, since they're a leveraged version of short-selling. If you're considering doing one, use a call spread instead; still has a chance of losing a lot of money but not *infinite* risk like naked calls.
Naked puts are also very dangerous, although I do sell them; for my TSLA "naked" puts, I have the cash to execute all of them with funds from other investments even if the other investments drop in value by a lot.
I feel sorry for him in some ways, because he actually knows a lot about commodities trading and option selling in particular, but he overleveraged badly and didn't understand the market he was trading in. (Some commenters say that natural gas options/futures are called "widowmaker" trades due to the extremely high volatility spikes.
Gunjan Banerji on Twitter )
He also clearly didn't understand the fundamentals of the NG/oil market, but I'm not sure that's what really sank him. The white paper I wrote last March (which I am going to publish soon; it's been "client and friend only" long enough) predicted an eventual drop in oil prices and a subsequent/concommitant rise in NG prices, which are artificially low due to the fracking bubble. So with those as the long-term trends I would never run a trade against the long-term trend. But he didn't know the fundamentals well enough. But it seems like he got sunk mostly by making risky naked call trades in a known-volatile market.
My conclusions: Never trade without knowing the fundamentals, even if you're a short-term technical trader. Never get overleveraged. And never, ever, ever sell naked calls.