SIMPLEX TRADING, LLC - NORTH ATLANTIC DRILLING LTD ownership

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NORTH ATLANTIC DRILLING LTD's ticker is and the CUSIP is G6613P909. A total of 3 filers reported holding NORTH ATLANTIC DRILLING LTD in Q1 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$4,000
-77.8%
752
-39.7%
0.00%
-100.0%
Q2 2017$18,000
+800.0%
1,248
+1123.5%
0.00%–
Q4 2016$2,000
+100.0%
102
+64.5%
0.00%–
Q3 2016$1,000–62
+3000.0%
0.00%–
Q2 2016$0–20.0%0.00%–
Q1 2016$0–2–0.00%–
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Other shareholders
NORTH ATLANTIC DRILLING LTD shareholders Q1 2016
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 40,900$112,0000.00%
Citadel Advisors 12,000$33,0000.00%
SIMPLEX TRADING, LLC 2$00.00%
View complete list of NORTH ATLANTIC DRILLING LTD shareholders