Exchange-traded funds (ETFs) are typically considered to be passive investment vehicles designed to track a benchmark index. However, with the promulgation of the Securities and Exchange Commission's 2019 ETF Rule, funds are permitted the use of custom creation/redemption baskets. This change...

We consider superhedging and no-arbitrage pricing in markets with a convex and cash-additive structure and derive an explicit functional form for the super-replication price. Using convex duality methods, we show that the superhedging price maximizes the difference between the expected payoff...