At $81 billion, the iPhone maker's market cap this month alone exceeds the value of 85% of the S&P 500.
Silver futures have climbed 13% this year as their more expensive cousin gold rallied amid uncertainties over President Trump's policies.
Such wagers can only be settled in Bitcoin, on the BitMEX, which offers the ability to trade certain cryptocurrency derivatives with "up to 100x leverage."
Blooom CEO Chris Costello says the firm will not develop a white labeled version of its offering, as other robos have done with their platforms.
While his views are not universally accepted, the question of whether you can successfully time smart beta is likely to get bigger as the ETFs proliferate.