Who owns Put 100 Spdr S&p 500 Etf Tr Tr Unit Exp 09-16-16@175.000 Option Root=…? Institutional holders

Put 100 Spdr S&p 500 Etf Tr Tr Unit Exp [email protected] Option Root= Spy: summary

No institution's latest stored 13F report lists Put 100 Spdr S&p 500 Etf Tr Tr Unit Exp [email protected] Option Root= Spy.