Jane Street Group LLC has substantively expanded its markets and broadened its products traded and increased its market share in many segments. The company has also been enhancing its risk management capabilities to address the increased complexity from its business growth and expanded scale. We affirmed all ratings, including our 'BB' issuer credit and senior secured debt ratings, and revised our outlook on Jane Street to positive from stable. The positive outlook indicates that we could raise the rating in the next 12-24 months if we believe the company?s franchise growth and diversification is sustainable and will result in more stable revenue and earnings, while also taking steps to strengthen and institutionalize its risk management capabilities and maintaining a solid