Second: It’s a thing that happens often enough that ICE Futures has a procedure to report trades like this as errors and adjust their prices. A normal part of electricity futures markets is people buying the wrong contract because they didn’t read the name all the way through, and then going to the exchange and saying “whoops wrong contract,” and the exchange fixing the trade.

Instead he’s accused of doing it basically as a form of … protest art, I guess? It happened to him, he was mad, so he did it to other people “to prove the point that” … that … that you’d be mad too if it happened to you? He was driven by that most universal of human motivations, the desire to annoy other people with the thing that was annoying him. Really it’s the most relatable kind of market manipulation.

source: ML