Market News
Jun. 05, 2026 OSE Single Stock Options Recorded All-Time Highs in Monthly Notional Amount and Volume (May 2026)
Osaka Exchange (OSE) is pleased to announce that the monthly notional amount and volume for Single Stock Options (SSOs) in May 2026 were approximately JPY 198.8 billion and 729,873 contracts respectively. Both figures marked the highest levels.
Since the issues eligible for market making were expanded in September 2025, trading in SSOs has continued to increase. This trend has been driven by such factors as brisk trading in TSE’s equity market, an increase in investors who utilize listed companies’ earnings announcements and other investment materials in order to trade SSOs, and a wider range of investors trading SSOs.
Expansion of SSOs Eligible for Market Making to 50 (Effective August 3, 2026)
In response to these market trends and the needs of investors, OSE will expand the number of SSOs eligible for market making by adding 18 issues, increasing the total from the current 32 to 50, effective August 3, 2026.
Trading Rankings (Notional Amount-Based)
May 2026
The underlying securities of the top ten SSOs traded in May 2026 are listed in the table below.
| Code | Underlying Security | Notional Amount Traded |
| 6954 | FANUC CORPORATION | JPY 61.6 billion |
| 8267 | AEON CO.,LTD. | JPY 31.5 billion |
| 6367 | DAIKIN INDUSTRIES,LTD. | JPY 18.7 billion |
| 1321 | NEXT FUNDS Nikkei 225 Exchange Traded Fund | JPY 14.4 billion |
| 7203 | TOYOTA MOTOR CORPORATION | JPY 6.0 billion |
| 7011 | Mitsubishi Heavy Industries,Ltd. | JPY 5.4 billion |
| 6098 | Recruit Holdings Co.,Ltd. | JPY 4.8 billion |
| 8306 | Mitsubishi UFJ Financial Group,Inc. | JPY 4.5 billion |
| 9984 | SoftBank Group Corp. | JPY 4.3 billion |
| 6857 | ADVANTEST CORPORATION | JPY 3.9 billion |
For Reference (More on the SSO market)
Please utilize the following links for more information on the SSO market:
Options Quotes for SSO
Osaka Exchange's Single Stock Options (SSOs) Trading Volume Hits New High, with Individuals Participating as Stock Prices Rise
Japan's Single Stock Options Markets Primed for Revitalization after Regulatory Improvements
OSE will continue its efforts to improve efficiency in the SSO market in order to meet the needs of market stakeholders.
Contact
Osaka Exchange, Inc.
TEL:+81-6-4706-0800 (Operator)