Who owns PUT (QQQ) POWERSHARES QQQ TR APR 20 18 $156 (100 SHS)? Institutional holders

PUT (QQQ) POWERSHARES QQQ TR APR 20 18 $156 (100 SHS): summary

No institution's latest stored 13F report lists PUT (QQQ) POWERSHARES QQQ TR APR 20 18 $156 (100 SHS).