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Sunday, November 29, 2009, 7:04PM ET - U.S. Markets Closed. Dow Down 1.48% Nasdaq Down 1.73%
RadiSys Corporation (RSYS)On Nov 27: 9.43  Down 0.22 (2.28%)  
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Major HoldersGet Major Holders for:
BREAKDOWN
% of Shares Held by All Insider and 5% Owners: 1%
% of Shares Held by Institutional & Mutual Fund Owners: 94%
% of Float Held by Institutional & Mutual Fund Owners: 96%
Number of Institutions Holding Shares: 99

MAJOR DIRECT HOLDERS (FORMS 3 & 4)
HolderSharesReported
NIERENBERG INVESTMENT MANAGEMENT COMPANY, INC.N/A29-Dec-08
GROUT SCOTT CHRISTOPHER115,86014-Nov-09
LATTIN WILLIAM WN/A31-Oct-08
HARPER JULIA A40,37125-Oct-08
AMBROSE ANTHONY31,96314-Nov-09


TOP INSTITUTIONAL HOLDERS
HolderShares% OutValue*Reported
ARTISAN PARTNERS LIMITED PARTNERSHIP2,181,3009.18$18,955,49730-Sep-09
Barclays Global Investors UK Holdings Ltd1,913,8548.05$16,631,39130-Sep-09
DIMENSIONAL FUND ADVISORS LP1,579,9326.65$13,729,60930-Sep-09
DOWNTOWN ASSOCIATES, LLC1,480,3166.23$12,863,94630-Sep-09
Credit Suisse/1,388,5685.84$12,066,65530-Sep-09
Credit Suisse1,388,5685.84$12,066,65530-Sep-09
RENAISSANCE TECHNOLOGIES, LLC1,051,4004.42$9,136,66630-Sep-09
CENTRAL SECURITIES CORPORATION (MANAGER)1,000,0004.21$8,690,00030-Sep-09
FRONTIER CAPITAL MANAGEMENT COMPANY INC712,8113.00$6,194,32730-Sep-09
NIERENBERG INVESTMENT MANAGEMENT COMPANY, INC.4,527,46319.04$39,343,65330-Sep-09

TOP MUTUAL FUND HOLDERS
HolderShares% OutValue*Reported
CENTRAL SECURITIES CORP1,000,0004.21$8,690,00030-Sep-09
ARTISAN SMALL CAP VALUE FUND969,1004.08$8,760,66430-Jun-09
DFA U.S. SMALL CAP VALUE SERIES486,0642.04$3,485,07830-Apr-09
ISHARES RUSSELL 2000 INDEX FD343,7041.45$2,986,78730-Sep-09
ISHARES S&P SMALLCAP 600 INDEX FD306,9081.29$2,611,78731-Oct-09
DFA U.S. MICRO CAP SERIES210,368.88$1,508,33830-Apr-09
IShares S&P Smallcap 600 Value Index Fund192,278.81$1,636,28531-Oct-09
VANGUARD TOTAL STOCK MARKET INDEX FUND189,508.80$1,713,15230-Jun-09
BRIDGEWAY FDS INC-ULTRA SMALL COMPANY MARKET FD187,900.79$1,698,61630-Jun-09
ISHARES RUSSELL 2000 GROWTH INDEX FD179,613.76$1,560,83630-Sep-09

View Transactions for Insiders & Institutional Holders
* Value shown is computed using the security's price on the report date given.


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