A Japanese borrower hit by a record loss sold a yen bond at the widest spread for yen corporate hybrid debt this year in a key test of appetite as interest rates creep higher.

Sumitomo Chemical priced ?100 billion ($700 million) of hybrid debt on Friday at 280 basis points over Japanese government bonds, according to an email from SMBC Nikko Securities, one of the underwriters.

That¡¯s twice the spread on jumbo subordinated debt deals by Takeda Pharmaceutical and Nippon Steel in June.