Walleye Trading LLC - SIENTRA INC ownership

SIENTRA INC's ticker is SIEN and the CUSIP is 82621J105. A total of 126 filers reported holding SIENTRA INC in Q2 2021. The put-call ratio across all filers is 0.60 and the average weighting 0.1%.

Quarter-by-quarter ownership
Walleye Trading LLC ownership history of SIENTRA INC
ValueSharesWeighting
Q2 2021$199,000
+19.9%
24,922
+9.3%
0.00%0.0%
Q1 2021$166,000
+325.6%
22,800
+128.0%
0.00%
Q4 2020$39,000
-29.1%
10,000
-30.1%
0.00%
Q2 2020$55,000
+52.8%
14,300
-22.9%
0.00%
Q1 2020$36,00018,5480.00%
Other shareholders
SIENTRA INC shareholders Q2 2021
NameSharesValueWeighting ↓
Abingworth LLP 2,199,012$18,692,00015.62%
Clarus Ventures, LLC 2,730,765$23,266,00015.32%
Cannell Capital 1,113,571$9,488,0003.03%
Cloverdale Capital Management, LLC 351,039$2,991,0002.40%
PURA VIDA INVESTMENTS, LLC 500,000$4,260,0001.56%
Park West Asset Management LLC 1,618,676$13,791,0001.07%
Atika Capital Management LLC 210,000$1,789,0001.06%
22NW, LP 132,400$1,128,0000.68%
Schonfeld Strategic Advisors LLC 335,000$2,854,0000.37%
FIRST NEW YORK SECURITIES LLC /NY 22,143$188,658,0000.35%
View complete list of SIENTRA INC shareholders