SIMPLEX TRADING, LLC - NORTH ATLANTIC DRILLING LTD ownership

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NORTH ATLANTIC DRILLING LTD's ticker is and the CUSIP is G6613P959. A total of 2 filers reported holding NORTH ATLANTIC DRILLING LTD in Q4 2016. The put-call ratio across all filers is - and the average weighting 0.0%.

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Quarter-by-quarter ownership
SIMPLEX TRADING, LLC ownership history of NORTH ATLANTIC DRILLING LTD
ValueSharesWeighting
Q3 2017$6,0000.0%670.0%0.00%–
Q2 2017$6,000–67
+857.1%
0.00%–
Q1 2017$0
-100.0%
7
-87.5%
0.00%–
Q4 2016$4,000
-55.6%
56
-24.3%
0.00%
-100.0%
Q3 2016$9,000–74
+7300.0%
0.00%–
Q2 2016$0–10.0%0.00%–
Q1 2016$0–1–0.00%–
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Other shareholders
NORTH ATLANTIC DRILLING LTD shareholders Q4 2016
NameSharesValueWeighting ↓
SIMPLEX TRADING, LLC 56$4,0000.00%
GROUP ONE TRADING, L.P. 10,000$32,0000.00%
View complete list of NORTH ATLANTIC DRILLING LTD shareholders