ETFs and Index Investing

What Does a Synthetic ETF Hold, and Where Does Counterparty Risk Arise?

Synthetic ETFs use swaps to receive the return of a target index. Understand how actual holdings differ from investment exposure and how to assess collateral and counterparties.

Synthetic ETFs use contracts such as swaps to deliver returns on target assets or indexes. Even when their holdings differ from the target index, a contract can connect them to the intended economic exposure. Investors must also examine contract performance, collateral management, and the ability to replace the transaction.

Separate the asset list from the promise to deliver returns

In one example of an unfunded swap structure, the fund holds a separate securities basket and exchanges that basket's performance for index performance. Other structures can differ in how cash is transferred and collateral is provided. The word synthetic alone therefore does not establish collateral ownership or the extent of risk. Use the manager's structural diagram to identify the relationships among investors' money, held assets, the swap contract, and collateral. It is also inaccurate to conclude that a fund is being mismanaged merely because index constituents are absent from its holdings.

Collateral does not eliminate the possibility of losses

If a counterparty fails to meet its obligations, the fund may face unpaid amounts or costs of replacing the contract. Collateral helps reduce these risks, but its assessed value can differ from its forced-sale value. This is why you should check collateral types, valuation frequency, exposure to each counterparty, and contract termination terms. Do not apply regulatory limits from one jurisdiction unchanged to ETFs in another country. Assess each product using its applicable regulations and prospectus standards.

Assess accessibility and cost when choosing replication methods

For assets that are difficult to buy directly or indexes containing many securities, contractual exposure can simplify management. But synthetic replication cannot always be ranked as cheaper or riskier than physical replication in a single statement. Compare actual tracking results for the same index, the scope of cost disclosure, counterparty concentration, and collateral transparency. Physical ETFs can also incur counterparty risk through securities lending or derivatives. Be able to explain which party bears each risk rather than relying on the structure's name. If materials show only a contract amount, check whether it is the same as the actual risk exposure; do not interpret total notional amount directly as expected loss.

Worked example

Hypothetical example: A separate basket worth KRW 10 billion rises 1% over a period while the target index rises 4%. Under a performance-swap contract, ignoring costs and other cash flows, the basket's KRW 100 million gain plus a net swap receipt of KRW 300 million brings the result to the target gain of KRW 400 million. Even with a right to receive KRW 300 million, you must examine collateral and contract terms to determine how much could be recovered if the counterparty cannot pay.

What to check

  • Have you distinguished actual basket holdings from target exposure?
  • Have you identified swap counterparties and their concentration?
  • Have you read the collateral valuation, custody, and disposal terms?
  • Have you avoided applying one jurisdiction's regulatory limits to another market?

Sources and primary materials

This is educational material about research methods. For an actual company decision, verify the filings and primary sources for the relevant period.

  1. Considering swap-based ETFs ↗
  2. What you need to know about physical and synthetic ETFs ↗