Japanese issuers sold a record ¥1 trillion in convertible bonds in the first half of 2024, the largest total since 2004. Higher Bank of Japan rates have made the hybrid attractive because companies can issue lower coupons while investors keep upside if equity climbs. Investors snapped up the issues, pushing demand beyond ordinary corporate bond volumes. The influx lets issuers refinance debt on terms easing pressure.

Nippon Steel led the surge with a ¥600 billion issuance, the largest convertible ever in Japan. JX Advanced Metals added a ¥250 billion deal, showing broad corporate appetite. The issues also drew foreign funds hunting yen‑denominated yield, and attracted domestic pension funds significantly. By locking in lower interest costs, issuers preserve cash flow, but conversion could dilute shareholders if prices rise.

Analysts view the boom as a pragmatic response to higher yields rather than a speculative equity bet. Convertibles give firms a hedge against financing strain while offering investors a modest premium over straight debt. Some analysts warn that a sharp equity rally could trigger sizable conversions, forcing companies to issue new shares at potentially unfavorable prices.