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Wednesday, February 10, 2010, 6:16AM ET - U.S. Markets open in 3 hours and 14 minutes. Dow Up 1.52% Nasdaq  0.00%
Volterra Semiconductor Corporation (VLTR)On Feb 9: 19.18   0.00 (0.00%)  
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Major HoldersGet Major Holders for:
BREAKDOWN
% of Shares Held by All Insider and 5% Owners: 4%
% of Shares Held by Institutional & Mutual Fund Owners: 78%
% of Float Held by Institutional & Mutual Fund Owners: 81%
Number of Institutions Holding Shares: 120

MAJOR DIRECT HOLDERS (FORMS 3 & 4)
HolderSharesReported
DAVID B. LIDSKY404,0008-Sep-09
TEUSCHER CRAIGN/A8-Feb-10
STASZAK JEFFREY96,09726-Jan-10
NUMANN WILLIAM33,87529-Oct-09
PAISLEY CHRISTOPHER B15,0001-Feb-10


TOP INSTITUTIONAL HOLDERS
HolderShares% OutValue*Reported
Barclays Global Investors UK Holdings Ltd1,146,3474.54$21,046,93030-Sep-09
VANGUARD GROUP, INC. (THE)956,1323.79$17,554,58330-Sep-09
Bank of New York Mellon Corporation939,4003.72$17,247,38430-Sep-09
FRONTIER CAPITAL MANAGEMENT COMPANY INC903,6113.58$16,590,29730-Sep-09
7X7 Asset Management LLC878,9463.48$16,137,44830-Sep-09
SCHRODER INVESTMENT MANAGEMENT GROUP766,7003.04$14,076,61230-Sep-09
ROTHSCHILD ASSET MANAGEMENT INC724,0962.87$13,294,40230-Sep-09
RENAISSANCE TECHNOLOGIES, LLC702,5902.79$12,899,55230-Sep-09
Rmb Capital Management, LLC685,7722.72$12,590,77330-Sep-09
FMR LLC3,770,75514.95$69,231,06130-Sep-09

TOP MUTUAL FUND HOLDERS
HolderShares% OutValue*Reported
FIDELITY GROWTH COMPANY FUND2,150,0008.52$35,453,50030-Nov-09
FIDELITY OTC PORTFOLIO1,322,3005.24$21,804,72730-Nov-09
ISHARES RUSSELL 2000 INDEX FD291,8371.16$4,812,39230-Nov-09
VANGUARD SMALL-CAP INDEX FUND275,7251.09$3,623,02630-Jun-09
VANGUARD TOTAL STOCK MARKET INDEX FUND241,559.96$3,174,08530-Jun-09
Wells Fargo Advantage Small Cap Opportunities Fd195,400.77$2,706,29031-Oct-09
VANGUARD SMALL-CAP GROWTH INDEX FUND187,041.74$3,434,07230-Sep-09
COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT180,753.72$2,375,09430-Jun-09
FIDELITY SELECT PORTFOLIOS - ELECTRONICS165,905.66$2,735,77330-Nov-09
ISHARES RUSSELL 2000 GROWTH INDEX FD165,248.66$2,724,93930-Nov-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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