GROUP ONE TRADING, L.P. - HOSPIRA INC ownership

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HOSPIRA INC's ticker is and the CUSIP is 441060950. A total of 3 filers reported holding HOSPIRA INC in Q4 2013. 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 HOSPIRA INC
ValueSharesWeighting
Q2 2014$236,000
-82.9%
4,600
-85.6%
0.00%
-82.6%
Q1 2014$1,380,000
+25.2%
31,900
+19.5%
0.02%
+35.3%
Q4 2013$1,102,000
+58.8%
26,700
+50.8%
0.02%
+30.8%
Q3 2013$694,000
-64.0%
17,700
-64.8%
0.01%
-72.3%
Q2 2013$1,927,000–50,300–0.05%–
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Other shareholders
HOSPIRA INC shareholders Q4 2013
NameSharesValueWeighting ↓
GROUP ONE TRADING, L.P. 26,700$1,102,0000.02%
Timber Hill LLC 20,700$854,0000.00%
Citadel Advisors 17,900$739,0000.00%
View complete list of HOSPIRA INC shareholders