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DATA I O CORP
DATA I O CORP. Institutional holdings reported to the SEC.

Institutional Holders (2014Q1)
Portfolio Summary: 14 Institutional holders with a total value of $4,253,000.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Penbrook Management LLC 532,950 2,078,000 48.86%
2 DIMENSIONAL FUND ADVISORS LP 308,461 740,000 17.40%
3 RENAISSANCE TECHNOLOGIES LLC 245,100 588,000 13.83%
4 VANGUARD GROUP INC 215,499 517,000 12.16%
5 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 27,600 63,000 1.48%
6 ROYAL BANK OF CANADA 23,951 57,000 1.34%
7 NORTHERN TRUST CORP 22,894 55,000 1.29%
8 Bank of New York Mellon Corp 20,366 49,000 1.15%
9 CITADEL ADVISORS LLC 13,658 33,000 0.78%
10 BlackRock Institutional Trust Company, N.A. 12,716 31,000 0.73%
11 Virtu KCG Holdings LLC 10,794 25,000 0.59%
12 GLENMEDE TRUST CO NA 7,000 16,000 0.38%
13 Tower Research Capital LLC (TRC) 586 1,000 0.02%
14 MORGAN STANLEY 13 0 0.00%

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.