SIMPLEX TRADING, LLC - SIERRA ONCOLOGY INC ownership

SIERRA ONCOLOGY INC's ticker is and the CUSIP is 82640U957. A total of 2 filers reported holding SIERRA ONCOLOGY INC in Q4 2018. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of SIERRA ONCOLOGY INC
ValueSharesWeighting
Q4 2018$83,0006360.00%
Other shareholders
SIERRA ONCOLOGY INC shareholders Q4 2018
NameSharesValueWeighting ↓
CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0$00.00%
SIMPLEX TRADING, LLC 636$83,0000.00%
View complete list of SIERRA ONCOLOGY INC shareholders