Definition and Common Types
A structured product (structured note) is a financial instrument that combines a conventional bond with embedded derivatives such as options or swaps. It offers higher yields than plain-vanilla bonds in exchange for the risk that principal may be impaired under certain conditions. In Japan, structured products have been sold to retail investors through securities firms and banks, but since 2022 the Financial Services Agency (FSA) has raised concerns about sales practices.
Common types include EB bonds (exchangeable bonds, where the bond converts into shares of a reference stock if a knock-in event occurs), Nikkei-linked notes, and FX-linked notes. With an EB bond, if the reference stock falls below a specified knock-in price, the investor receives shares instead of cash at maturity. For example, an EB bond paying 8% annually might deliver shares worth only 700,000 yen against a 1 million yen face value if the reference stock drops 30% and triggers the knock-in - resulting in a net loss despite the high coupon.
The Risk Structure Behind High Yields
The high yield of a structured product is not a free lunch. The investor is effectively selling an option, and the option premium funds the elevated coupon. In the case of an EB bond, the investor has the same economic exposure as selling a put option on the reference stock. While the stock remains stable, the investor collects generous coupons, but a sharp decline triggers large losses.
What proved particularly problematic were cases where elderly or inexperienced investors purchased products without adequate risk disclosure, attracted by annual yields of 5-10%. The structure allows a knock-in event to wipe out 30-50% of principal, and the emergence of investors who suffered such losses prompted widespread criticism of how these products were sold.
Regulatory Tightening and Common Misconceptions
Since 2022, the FSA has intensified oversight of structured product sales. Many securities firms have voluntarily suspended or scaled back sales to retail investors. The core problems are the mismatch between product complexity and investor understanding, and sales costs that are easy to overlook behind a headline yield.
The biggest misconception is that 'it's a bond, so it's safe.' The word 'bond' in the name leads many to assume principal protection, but the reality is that structured products embed derivative risks. If you cannot explain why the yield is higher than a plain bond, you should not invest. Warren Buffett's principle - 'never invest in something you don't understand' - applies perfectly to structured products.