This is a currency ETF that tracks the Japanese yen's exchange rate against the US dollar. The trust holds yen deposits and follows the dollar-converted value of the yen, rising when the yen strengthens and falling when it weakens.

It suits investors who want direct exposure to the yen or want to take advantage of movements in the yen-dollar exchange rate.

It is a passively managed (index-tracking) ETF run by Invesco.

The trust holds yen deposits and tracks the Japanese yen's exchange rate against the US dollar. Its value rises when the yen strengthens against the dollar and falls when it weakens. Because it gives exposure to an exchange-rate asset that differs from stocks and bonds, it is used as a tool for currency diversification or for taking advantage of exchange-rate moves.

• Direct exposure to the yen's exchange rate against the dollar
• A currency asset that differs from stocks and bonds

Assets under management (AUM) stand at $434.0M, and the expense ratio is 0.40% per year.

Compared with other currency ETFs or products that bet on a stronger dollar, the main points of comparison are the currency of exposure and the direction of the bet.

The yen is driven by the interest rate gap between the US and Japan, demand for risk aversion, and monetary policy. It tends to weaken when the gap between Japanese and US rates widens, and to strengthen as a safe-haven currency when risk-aversion demand grows. Because the fund pays no interest, exchange-rate movements translate directly into performance.

For currency products, fund flows diverge depending on the rate-gap outlook, risk appetite, and expectations for monetary policy, and money can also move in response to bets on the yen's direction or demand for currency diversification. It is also worth noting that performance can vary widely with the US-Japan rate gap and policy changes.

Direct yen exposure and currency diversification are its strengths, while exchange-rate volatility, the lack of interest, and dependence on the rate gap are considerations.

For exposure to the euro, FXE is a direct substitute, and for exposure to the Canadian dollar, products such as FXC are also worth comparing. To bet on a weaker dollar, products such as UDN can also be considered. What sets this ETF apart is its narrow exposure to the Japanese yen's exchange rate against the dollar.

Here are the points to review before investing in FXY. Yen exposure is the main appeal, but exchange-rate volatility, the lack of interest, and dependence on the rate gap should be checked in advance. It is also a good idea to compare it with other currency and dollar products.

A weaker yen driven by a wider US-Japan rate gap and shifts in monetary policy is the main variable for performance. Because this is a currency asset, it depends solely on exchange-rate movements, with no interest or dividends. Exchange rates can be highly volatile depending on policy and market conditions.

It is a suitable candidate for investors who want direct exposure to the yen or want to take advantage of movements in the yen-dollar exchange rate. For exposure to other currencies, consider products such as FXE and FXC, and for yen exchange-rate exposure, compare them with this product before choosing.