> But Bitcoin options on e.g. LedgerX.com are securities (edit: regulated ones, that is), and anything that affects Bitcoin’s price is going to affect those derivatives’ prices.
But the SEC doesn't regulate mortgages even though there are derivative securities that are regulated. SEC regulates the asset backed securities but not the assets underlying those securities.
The question was whether the SEC would have jurisdiction. The manipulation affects securities that the SEC would have jurisdiction over, so it would follow that they do.
If not, it would be a pretty gaping hole in their mandate: "It's fine to manipulate X and profit from that, but not to profit from the regulated derivatives that closely track X."
But the SEC doesn't regulate mortgages even though there are derivative securities that are regulated. SEC regulates the asset backed securities but not the assets underlying those securities.