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Institutional Holdings of US NAT GAS FD ETF (UNG) on 3/31/2010

1. Company Information

Company/StockUS NAT GAS FD ETF (stock symbol: UNG)
Funds Ownership119 out of total 2687 funds (4%) own this stock
Funds own total 56,491,409 shares, --% of all outstanding shares
Funds SOLD -13,545,762 shares (-19.34%) in the quarter ended on 3/31/2010

2. Top 20 Funds Held UNG in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)GOLDMAN SACHS GROUP INC9,788,717Cut -28.41%0.04%--%
2.)GOLDMAN SACHS GROUP INC8,644,400PUTCut -48.49%0.04%--%
3.)IONIC CAPITAL MANAGEMENT LLC8,570,300PUTCut -20.97%2.35%--%
4.)IONIC CAPITAL MANAGEMENT LLC5,724,900CALLCut -20.61%1.57%--%
5.)LEVEL GLOBAL INVESTORS LP5,500,000PUTAdded 83.33%0.01%--%
6.)MORGAN STANLEY4,741,187Cut -26.39%0.03%--%
7.)BARCLAYS PLC4,078,400CALLAdded 49.62%0.05%--%
8.)UBS AG4,003,642Added 13.29%0.05%--%
9.)J P MORGAN CHASE & CO2,989,812Cut -35.85%0.02%--%
10.)CTC LLC2,971,503Cut -20.53%4.35%--%
11.)WOLVERINE ASSET MANAGEMENT LLC2,842,433Cut -9.77%0.76%--%
12.)CITIGROUP INC2,771,000CALLAdded 48.18%0.02%--%
13.)WALLEYE TRADING LLC2,669,000CALLAdded 18.56%0.17%--%
14.)BARCLAYS PLC2,633,100PUTAdded 18.16%0.03%--%
15.)CITIGROUP INC2,428,900PUTAdded 9.37%0.02%--%
16.)SUSQUEHANNA INTERNATIONAL GROUP LLP2,354,091Cut -8.92%0.06%--%
17.)BNP PARIBAS ARBITRAGE SNC2,243,264Added 196.49%0.03%--%
18.)BNP PARIBAS ARBITRAGE SA2,243,264Added 196.49%0.03%--%
19.)IONIC CAPITAL MANAGEMENT LLC1,775,531Cut -61.61%0.49%--%
20.)DEUTSCHE BANK AG 1,748,957Cut -60.39%0.02%--%



3. Top 20 Funds Held UNG in this Quarter (By % of Portfolio) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)CTC LLC2,971,503Cut -20.53%4.35%--%
2.)VIRTU FINANCIAL BD LLC692,324New3.76%--%
3.)BL CORP200,000New3.56%--%
4.)KITT BARRY M150,000CALLNew3.52%--%
5.)NAKOMA CAPITAL MANAGEMENT LLC291,200New2.43%--%
6.)IONIC CAPITAL MANAGEMENT LLC8,570,300PUTCut -20.97%2.35%--%
7.)L & S ADVISORS INC88,300New1.94%--%
8.)BEDELL INVESTMENT COUNSELLING298,975New1.84%--%
9.)EWT LLC1,657,217Added 833.52%1.60%--%
10.)IONIC CAPITAL MANAGEMENT LLC5,724,900CALLCut -20.61%1.57%--%
11.)LONESTAR CAPITAL MANAGEMENT LLC12,500CALLCut -98.75%1.39%--%
12.)GFS ADVISORS LLC164,070Added 19.41%1.14%--%
13.)PILOT ROCK INVESTMENT PARTNERS GP LLC306,400CALLUnchanged0.81%--%
14.)GNI CAPITAL INC15,000Unchanged0.81%--%
15.)BAY HILL CAPITAL MANAGEMENT LLC390,271Cut -24.81%0.79%--%
16.)WOLVERINE ASSET MANAGEMENT LLC2,842,433Cut -9.77%0.76%--%
17.)ST GERMAIN D J CO INC459,755Cut -3.21%0.70%--%
18.)TELLURIDE ASSET MANAGEMENT LLC68,336Cut -32.07%0.63%--%
19.)LEONETTI & ASSOCIATES LLC98,600Added 3.25%0.60%--%
20.)IONIC CAPITAL MANAGEMENT LLC1,775,531Cut -61.61%0.49%--%

4. Top 20 Funds BOUGHT NEW UNG in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)VIRTU FINANCIAL BD LLC692,3243.76%--%
2.)BEDELL INVESTMENT COUNSELLING298,9751.84%--%
3.)NAKOMA CAPITAL MANAGEMENT LLC291,2002.43%--%
4.)DALTON GREINER HARTMAN MAHER & CO220,9600.17%--%
5.)BL CORP200,0003.56%--%
6.)KITT BARRY M150,000CALL3.52%--%
7.)NOMURA HOLDINGS INC147,5000.00%--%
8.)MILLENNIUM MANAGEMENT LLC143,1810.01%--%
9.)SG AMERICAS SECURITIES LLC117,900CALL0.00%--%
10.)JANE STREET HOLDING LLC114,300CALL0.01%--%
11.)L & S ADVISORS INC88,3001.94%--%
12.)JEFFERIES GROUP INC DE 68,6920.02%--%
13.)BASCOM HILL PARTNERS LLC65,000PUT0.28%--%
14.)ROBECO INVESTMENT MANAGEMENT INC56,6000.00%--%
15.)SUMMIT CAPITAL MANAGEMENT LLC50,0000.21%--%
16.)TAHITHROMOS LLC47,200CALL0.02%--%
17.)SMITH CHAS P & ASSOCIATES PA CPAS46,3850.18%--%
18.)STATE STREET CORP33,0700.00%--%
19.)NATIONAL PLANNING CORP21,2430.08%--%
20.)MARSHALL & ILSLEY CORP19,4700.00%--%

5. Top 20 Funds SOLD OUT UNG in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)INTERLACHEN CAPITAL GROUP LP3,100,000PUT1.98%--%
2.)JESAGA ADVISERS LLC1,400,0000.10%--%
3.)INTERLACHEN CAPITAL GROUP LP400,8000.26%--%
4.)LONESTAR CAPITAL MANAGEMENT LLC350,0000.40%--%
5.)CATALYST INVESTMENT MANAGEMENT CO LLC250,0001.15%--%
6.)SIGMA CAPITAL MANAGEMENT LLC250,000CALL0.09%--%
7.)ASTON ASSET MANAGEMENT LLC202,3830.02%--%
8.)CAVU CAPITAL ADVISORS LLC200,0000.45%--%
9.)ROYAL BANK OF CANADA 200,000CALL0.00%--%
10.)BAIRD ROBERT W & CO INC WI 158,4190.04%--%
11.)MAINSTREAM INVESTMENT ADVISERS LLC154,0000.35%--%
12.)EAGLE ASSET MANAGEMENT INC125,5700.01%--%
13.)MCGLINN CAPITAL MANAGEMENT INC125,0000.66%--%
14.)HL FINANCIAL SERVICES LLC124,6270.04%--%
15.)HUDSON BAY CAPITAL MANAGEMENT LP109,9630.12%--%
16.)AMERICAN INTERNATIONAL GROUP INC108,7130.01%--%
17.)KAYNE ANDERSON CAPITAL ADVISORS LP100,0000.02%--%
18.)BLACKTHORN INVESTMENT GROUP LLC100,0000.24%--%
19.)CIBC WORLD MARKETS INC92,6000.02%--%
20.)HUTCHIN HILL CAPITAL LP90,0000.11%--%