SIMPLEX TRADING, LLC - NORTH ATLANTIC DRILLING LTD ownership

NORTH ATLANTIC DRILLING LTD's ticker is and the CUSIP is G6613P952. A total of 3 filers reported holding NORTH ATLANTIC DRILLING LTD in Q3 2015. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of NORTH ATLANTIC DRILLING LTD
ValueSharesWeighting
Q4 2015$2,000
-75.0%
9
-84.7%
0.00%
-100.0%
Q3 2015$8,000
-77.8%
59
-75.8%
0.00%
-66.7%
Q2 2015$36,000
-29.4%
244
+36.3%
0.00%
-50.0%
Q1 2015$51,000
+628.6%
179
+208.6%
0.01%
+500.0%
Q4 2014$7,000580.00%
Other shareholders
NORTH ATLANTIC DRILLING LTD shareholders Q3 2015
NameSharesValueWeighting ↓
SIMPLEX TRADING, LLC 59$8,0000.00%
GROUP ONE TRADING, L.P. 55,000$42,0000.00%
Citadel Advisors 8,100$6,0000.00%
View complete list of NORTH ATLANTIC DRILLING LTD shareholders