strata protocol hit $200m tvl splitting ethena yields into tranches during usde's 50% supply collapse. senior holders getting 8-9% protected yields, junior holders taking 21% with first-loss risk. maven11 just backed them with $3m. tranching volatile defi yields into rated products captures both risk-averse and degen capital. the spread between senior safety at 8% and junior leverage at 21% prices how much traders will pay for downside protection ...