4 ms·

At great cost to himself. Dumping coins like that is not free, you pay a huge price due to slippage.

• christopheml 9y ago
  Interestingly enough, that's how Société Générale lost huge amounts of money following the discovery of Jerôme Kerviel's misbehavior. They recklessly closed their positions, shooting themselves in the foot in the process.
• dazmax 9y ago
  But now they could also own put options.