WELLINGTON MANAGEMENT GROUP LLP - DATA I O CORP ownership

DATA I O CORP's ticker is DAIO and the CUSIP is 237690102. A total of 17 filers reported holding DATA I O CORP in Q4 2015. The put-call ratio across all filers is - and the average weighting 0.1%.

Quarter-by-quarter ownership
WELLINGTON MANAGEMENT GROUP LLP ownership history of DATA I O CORP
ValueSharesWeighting
Q4 2015$428,000
-38.7%
170,000
-43.2%
0.00%
Q3 2015$698,000
-22.9%
299,530
+13.2%
0.00%
Q2 2015$905,000264,5000.00%
Other shareholders
DATA I O CORP shareholders Q4 2015
NameSharesValueWeighting ↓
Kanen Wealth Management LLC 806,528$3,072,8712.30%
Penbrook Management LLC 344,250$1,311,5930.96%
Kovack Advisors, Inc. 345,101$1,314,8350.18%
PERRITT CAPITAL MANAGEMENT INC 44,899$171,0650.10%
ESSEX INVESTMENT MANAGEMENT CO LLC 87,165$332,0990.05%
BARD ASSOCIATES INC 22,075$84,1060.04%
JAMES INVESTMENT RESEARCH INC 15,402$58,6820.01%
Greenhaven Road Investment Management, L.P. 34,630$1320.00%
Renaissance Technologies 531,455$2,0250.00%
ZACKS INVESTMENT MANAGEMENT 49,900$190,1190.00%
View complete list of DATA I O CORP shareholders