A.R.T. Advisors, LLC - ION GEOPHYSICAL CORP ownership

ION GEOPHYSICAL CORP's ticker is IO and the CUSIP is 462044207. A total of 66 filers reported holding ION GEOPHYSICAL CORP in Q4 2018. The put-call ratio across all filers is - and the average weighting 0.0%.

Quarter-by-quarter ownership
A.R.T. Advisors, LLC ownership history of ION GEOPHYSICAL CORP
ValueSharesWeighting
Q4 2019$186,000
+106.7%
21,451
+23.0%
0.01%
+50.0%
Q4 2018$90,000
-76.1%
17,445
+25.1%
0.01%
-60.0%
Q1 2018$377,000
+86.6%
13,943
-66.5%
0.02%
+66.7%
Q1 2017$202,000
+143.4%
41,680
+200.7%
0.01%
+80.0%
Q4 2016$83,00013,8600.01%
Other shareholders
ION GEOPHYSICAL CORP shareholders Q4 2018
NameSharesValueWeighting ↓
Arlington Capital Management, Inc. 132,080$176,0000.33%
Gates Capital Management 2,953,850$3,929,0000.11%
Virtu Financial LLC 44,041$59,0000.01%
Belvedere Trading LLC 93,800$204,0000.01%
SeaCrest Wealth Management, LLC 25,000$33,0000.00%
DUPONT CAPITAL MANAGEMENT CORP 71,034$94,0000.00%
Cetera Advisors LLC 42,940$57,0000.00%
Your Advocates Ltd., LLP 1,000$1,0000.00%
MEEDER ASSET MANAGEMENT INC 2,321$3,0000.00%
HARBOUR INVESTMENTS, INC. 33$00.00%
View complete list of ION GEOPHYSICAL CORP shareholders