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Thursday, December 17, 2009, 1:15AM ET - U.S. Markets open in 8 hours and 15 minutes. Dow Down 0.10% Nasdaq Up 0.27%
Gasco Energy Inc. (GSX)On Dec 16: 0.55  Up 0.06 (12.24%)  
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HereMajor Holders
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Major HoldersGet Major Holders for:
BREAKDOWN
% of Shares Held by All Insider and 5% Owners: 6%
% of Shares Held by Institutional & Mutual Fund Owners: 22%
% of Float Held by Institutional & Mutual Fund Owners: 24%
Number of Institutions Holding Shares: 42

MAJOR DIRECT HOLDERS (FORMS 3 & 4)
HolderSharesReported
GRANT W KING III390,45631-Dec-08
DECKER MICHAEL122,7612-Feb-09


TOP INSTITUTIONAL HOLDERS
HolderShares% OutValue*Reported
WHITEBOX ADVISORS, LLC4,584,0874.26$2,246,20230-Sep-09
BLACKROCK INC.3,074,2382.85$1,506,37630-Sep-09
BlackRock Advisors, LLC3,051,9002.83$1,495,43130-Sep-09
PENN Capital Management Co., Inc.2,891,7942.68$1,416,97930-Sep-09
VANGUARD GROUP, INC. (THE)1,814,2601.68$888,98730-Sep-09
PERRITT CAPITAL MANAGEMENT, INC.1,240,7001.15$607,94330-Sep-09
RENAISSANCE TECHNOLOGIES, LLC907,400.84$444,62630-Sep-09
DEUTSCHE BANK AKTIENGESELLSCHAFT805,300.75$394,59730-Sep-09
NORTHERN TRUST CORPORATION761,791.71$213,30130-Jun-09
DRIEHAUS CAPITAL MANAGEMENT, INC.713,660.66$349,69330-Sep-09

TOP MUTUAL FUND HOLDERS
HolderShares% OutValue*Reported
Columbia Fds Ser Tr I-Columbia Energy & Natural Resources Fd1,900,0001.76$532,00030-Jun-09
VANGUARD TOTAL STOCK MARKET INDEX FUND943,505.88$264,18130-Jun-09
Blackrock Funds-Energy & Resources Portfolio927,600.86$259,72830-Jun-09
PERRITT MICROCAP OPPORTUNITIES FUND925,000.86$453,25030-Sep-09
VANGUARD EXTENDED MARKET INDEX FUND672,029.62$188,16830-Jun-09
Blackrock Real Asset Equity Fund579,700.54$289,85030-Apr-09
PERRITT EMERGING OPPORTUNITIES FUND275,000.26$134,75030-Sep-09
COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT142,465.13$39,89030-Jun-09
SPARTAN EXTENDED MARKET INDEX FUND127,719.12$62,58230-Sep-09
SPARTAN TOTAL MARKET INDEX FUND113,818.11$55,77030-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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