GROUP ONE TRADING, L.P. - IRON MTN INC ownership

IRON MTN INC's ticker is IRM and the CUSIP is 462846106. A total of 345 filers reported holding IRON MTN INC in Q4 2013. The put-call ratio across all filers is 1.72 and the average weighting 0.5%.

Quarter-by-quarter ownership
GROUP ONE TRADING, L.P. ownership history of IRON MTN INC
ValueSharesWeighting
Q2 2014$6,605,000
+44.8%
186,319
+12.6%
0.10%
+32.5%
Q1 2014$4,560,000
+64.7%
165,411
+81.4%
0.08%
+83.3%
Q4 2013$2,768,000
+1651.9%
91,203
+1459.0%
0.04%
+1300.0%
Q3 2013$158,0005,8500.00%
Other shareholders
IRON MTN INC shareholders Q4 2013
NameSharesValueWeighting ↓
Gulf International Bank (UK) Ltd 65,031$2,072,0000.03%
CULLINAN ASSOCIATES INC 10,201$325,0000.02%
American Research & Management Co. 308$10,0000.00%
Gemmer Asset Management LLC 236$8,0000.00%
View complete list of IRON MTN INC shareholders