What does it mean that ARKY is a synthetic ETF?

ARKY does not physically own the underlying stocks. Instead, it achieves economic exposure through derivatives, specifically swaps, that replicate the payoff profile of an autocallable. This synthetic structure is not a workaround; it is the only practical way to deliver this kind of payoff inside an ETF. The assets are held in segregated accounts with an independent custodian, not on a counterparty's balance sheet. The trade-off is that ARKY carries counterparty risk, the risk that the institution on the other side of a derivative transaction could fail. The fund manages this risk through collateral arrangements, mark-to-market procedures, and diversification across counterparties.