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 ↓
Penbrook Management LLC 479,390$1,208,0001.24%
PERRITT CAPITAL MANAGEMENT INC 180,888$456,0000.10%
Renaissance Technologies 298,200$751,0000.00%
Bank of New York Mellon Corp 20,390$51,0000.00%
Tower Research Capital LLC (TRC) 368$1,0000.00%
ROYAL BANK OF CANADA 21,050$53,0000.00%
BlackRock Fund Advisors 969$2,0000.00%
VANGUARD GROUP INC 261,353$658,0000.00%
UBS Group AG 2,263$6,0000.00%
DIMENSIONAL FUND ADVISORS LP 300,492$757,0000.00%
View complete list of DATA I O CORP shareholders