GROUP ONE TRADING, L.P. - MAST THERAPEUTICS INC ownership

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MAST THERAPEUTICS INC's ticker is and the CUSIP is 576314958. A total of 1 filers reported holding MAST THERAPEUTICS INC in Q4 2014. The put-call ratio across all filers is - and the average weighting 0.0%.

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Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of MAST THERAPEUTICS INC
ValueSharesWeighting
Q4 2014$17,000
+240.0%
30,000
+316.7%
0.00%–
Q2 2014$5,000
-16.7%
7,200
-20.0%
0.00%–
Q1 2014$6,000
+500.0%
9,000
+233.3%
0.00%–
Q4 2013$1,000–2,700
+2600.0%
0.00%–
Q3 2013$0–1000.0%0.00%–
Q2 2013$0–100–0.00%–
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Other shareholders

There were no reported owners of MAST THERAPEUTICS INC in Q4 2014.

NameSharesValueWeighting ↓
View complete list of MAST THERAPEUTICS INC shareholders