21Shares is overhauling its US ETF line, and it’s out with the old, in with the yet-to-be-approved-by-the-SEC. The company is scrapping three of its five exchange-traded funds, according to a regulatory filing made on Monday. All three of those products are relatively small and come from the partnership 21Shares has had with ARK Invest. Meanwhile, 21Shares has been prepping more than half a dozen spot-price ETFs focused on other types of cryptocurrency. “The writing was sort of on the wall for this relat ...