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Friday, December 4, 2009, 5:31PM ET - U.S. Markets Closed. Dow Up 0.22% Nasdaq Up 0.98%
Volcano Corporation (VOLC)At 4:00PM ET: 15.58  Up 0.64 (4.28%)  
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Major HoldersGet Major Holders for:
BREAKDOWN
% of Shares Held by All Insider and 5% Owners: 9%
% of Shares Held by Institutional & Mutual Fund Owners: 103%
% of Float Held by Institutional & Mutual Fund Owners: 114%
Number of Institutions Holding Shares: 138

MAJOR DIRECT HOLDERS (FORMS 3 & 4)
HolderSharesReported
DOMAIN PARTNERS V LP2,646,32816-Jul-08
DOMAIN PARTNERS IV LP1,868,54016-Jul-08
BURGESS VINCENT J121,49227-Feb-09
BLAIR JAMES C70,91616-Jul-08
MORE ROBERT J16,83816-Jul-08


TOP INSTITUTIONAL HOLDERS
HolderShares% OutValue*Reported
Capital Research Global Investors4,632,7789.57$77,923,32530-Sep-09
WADDELL & REED FINANCIAL INC.2,886,1135.96$48,544,42030-Sep-09
WELLS FARGO & COMPANY2,702,9655.58$45,463,87130-Sep-09
Barclays Global Investors UK Holdings Ltd2,409,1334.98$40,521,61730-Sep-09
AXA2,046,8944.23$34,428,75730-Sep-09
VANGUARD GROUP, INC. (THE)1,742,6773.60$29,311,82730-Sep-09
Bank of New York Mellon Corporation1,633,6743.37$27,478,39630-Sep-09
ORBIMED ADVISORS LLC.1,504,0003.11$25,297,28030-Sep-09
TIMES SQUARE CAPITAL MANAGEMENT1,466,2003.03$24,661,48430-Sep-09
WELLINGTON MANAGEMENT COMPANY, LLP6,776,56013.99$113,981,73930-Sep-09

TOP MUTUAL FUND HOLDERS
HolderShares% OutValue*Reported
SMALLCAP WORLD FUND2,783,6005.75$38,914,72830-Jun-09
AMERICAN FDS INSURANCE SER-GLOBAL SMALL CAPITALIZATION F2,295,4784.74$38,609,93930-Sep-09
CALAMOS GROWTH FUND1,200,0002.48$20,184,00030-Sep-09
WADDELL & REED ADVISORS FDS-SMALL CAP FUND1,001,3002.07$13,998,17430-Jun-09
Wells Fargo Advantage Small Cap Growth Fd742,1721.53$12,483,33330-Sep-09
ISHARES RUSSELL 2000 INDEX FD710,0171.47$11,942,48530-Sep-09
VANGUARD EXPLORER FUND, INC.672,9711.39$10,222,42931-Jul-09
HARTFORD GLOBAL HEALTH FUND606,0001.25$9,205,14031-Jul-09
HARTFORD SMALL COMPANY HLS FUND, INC.559,0001.15$7,814,82030-Jun-09
IVY SMALL CAP GROWTH FUND547,2001.13$7,649,85630-Jun-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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