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Institutional Holdings of ISHARES TRUST S&P 100 INDEX FUND (OEF) on 12/31/2011

1. Company Information

Company/StockISHARES TRUST S&P 100 INDEX FUND (stock symbol: OEF)
Funds Ownership139 out of total 3028 funds (5%) own this stock
Funds own total 20,224,197 shares, --% of all outstanding shares
Funds BOUGHT 2,259,275 more shares (+12.58%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)SG AMERICAS SECURITIES LLC114,790,800PUTAdded 259.55%3.57%--%
2.)SG AMERICAS SECURITIES LLC89,064,600CALLAdded 368.46%1.97%--%
3.)J P MORGAN CHASE & CO19,433,714PUTNew0.51%--%
4.)J P MORGAN CHASE & CO8,240,700CALLNew0.22%--%
5.)SENATOR INVESTMENT GROUP LP4,750,000PUTAdded 35.71%11.63%--%
6.)BANK OF AMERICA CORP DE 4,022,719Added 86.41%0.15%--%
7.)STATE OF NEW JERSEY COMMON PENSION FUND D3,000,000PUTUnchanged0.08%--%
8.)MORGAN STANLEY1,618,704Added 70.73%0.06%--%
9.)GOLDENTREE ASSET MANAGEMENT LP1,496,100PUTCut -49.68%35.41%--%
10.)JONES FINANCIAL COMPANIES LLLP1,439,172Added 2.54%1.65%--%
11.)MERISTEM LLP1,270,341Added 4.71%33.43%--%
12.)BLACKROCK INC1,232,942Added 5.50%0.15%--%
13.)GOLDENTREE ASSET MANAGEMENT LP1,150,000PUTNew15.35%--%
14.)SIGNATUREFD LLC917,448Unchanged27.38%--%
15.)STERLING CAPITAL MANAGEMENT LLC808,610Added 15.69%2.00%--%
16.)SAC CAPITAL ADVISORS LP742,500CALLNew0.18%--%
17.)MERITAGE GROUP LP700,000PUTNew1.39%--%
18.)ASIAN CENTURY QUEST CAPITAL LLC675,000CALLNew6.88%--%
19.)COMMERZBANK AKTIENGESELLSCHAFT FI675,000CALLAdded 18.42%0.15%--%
20.)NANTAHALA CAPITAL MANAGEMENT LLC603,800CALLNew8.47%--%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)GOLDENTREE ASSET MANAGEMENT LP1,496,100PUTCut -49.68%35.41%--%
2.)MERISTEM LLP1,270,341Added 4.71%33.43%--%
3.)SIGNATUREFD LLC917,448Unchanged27.38%--%
4.)GOLDENTREE ASSET MANAGEMENT LP1,150,000PUTNew15.35%--%
5.)SENATOR INVESTMENT GROUP LP4,750,000PUTAdded 35.71%11.63%--%
6.)NANTAHALA CAPITAL MANAGEMENT LLC603,800CALLNew8.47%--%
7.)GELLER FAMILY OFFICE SERVICES LLC123,435Added 2.17%8.22%--%
8.)ASIAN CENTURY QUEST CAPITAL LLC675,000CALLNew6.88%--%
9.)NANTAHALA CAPITAL MANAGEMENT LLC466,000PUTNew6.54%--%
10.)MERIDIAN MANAGEMENT CO78,818Added 20.01%5.43%--%
11.)SEQUENT ASSET MANAGEMENT LLC86,835Added 206.19%4.38%--%
12.)SAGEWORTH TRUST CO92,300Unchanged4.33%--%
13.)HM CAPITAL MANAGEMENT LLC30,503Cut -80.83%4.24%--%
14.)PATRIOT WEALTH MANAGEMENT INC206,625Added 0.01%4.00%--%
15.)SIMMONS FIRST TRUST CO NA139,154Added 0.42%3.83%--%
16.)RELATIVE VALUE PARTNERS LLC285,515Cut -40.94%3.67%--%
17.)SG AMERICAS SECURITIES LLC114,790,800PUTAdded 259.55%3.57%--%
18.)ROUND TABLE SERVICES LLC44,652Unchanged3.33%--%
19.)WHARTON BUSINESS GROUP LLC321,027Cut -17.52%2.00%--%
20.)STERLING CAPITAL MANAGEMENT LLC808,610Added 15.69%2.00%--%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)J P MORGAN CHASE & CO19,433,714PUT0.51%--%
2.)J P MORGAN CHASE & CO8,240,700CALL0.22%--%
3.)GOLDENTREE ASSET MANAGEMENT LP1,150,000PUT15.35%--%
4.)SAC CAPITAL ADVISORS LP742,500CALL0.18%--%
5.)MERITAGE GROUP LP700,000PUT1.39%--%
6.)ASIAN CENTURY QUEST CAPITAL LLC675,000CALL6.88%--%
7.)NANTAHALA CAPITAL MANAGEMENT LLC603,800CALL8.47%--%
8.)NANTAHALA CAPITAL MANAGEMENT LLC466,000PUT6.54%--%
9.)CR INTRINSIC INVESTORS LLC250,000PUT1.12%--%
10.)SIGMA CAPITAL MANAGEMENT LLC200,000PUT1.07%--%
11.)SUSQUEHANNA INTERNATIONAL GROUP LLP111,000PUT0.00%--%
12.)NANTAHALA CAPITAL MANAGEMENT LLC87,700CALL0.95%--%
13.)DRIEHAUS CAPITAL MANAGEMENT LLC75,750PUT0.01%--%
14.)WILLIS INVESTMENT COUNSEL74,8600.63%--%
15.)CREATIVE PLANNING66,4180.34%--%
16.)PARAMETER CAPITAL MANAGEMENT LLC50,000CALL0.94%--%
17.)STRATEGIC INVESTMENT MANAGEMENT49,2851.41%--%
18.)SUSQUEHANNA INTERNATIONAL GROUP LLP46,300CALL0.00%--%
19.)RAYMOND JAMES & ASSOCIATES45,3760.05%--%
20.)KLEINHEINZ CAPITAL PARTNERS INC40,000PUT0.13%--%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)TIMBER HILL LLC13,464,500CALL1.62%--%
2.)TIMBER HILL LLC13,003,800PUT2.11%--%
3.)TIMBER HILL LLC4,248,600CALL0.33%--%
4.)TIMBER HILL LLC4,121,800PUT0.37%--%
5.)TIMBER HILL LLC1,657,100PUT0.21%--%
6.)TIMBER HILL LLC1,631,900CALL0.24%--%
7.)ELLIOTT ASSOCIATES LP1,350,000PUT3.70%--%
8.)GLG PARTNERS LP1,231,100PUT3.10%--%
9.)TIMBER HILL LLC1,109,600CALL0.14%--%
10.)GLG PARTNERS LP1,000,700CALL2.22%--%
11.)TIMBER HILL LLC999,000CALL0.30%--%
12.)TIMBER HILL LLC784,800PUT0.24%--%
13.)TIMBER HILL LLC666,300PUT0.16%--%
14.)TORONTO DOMINION BANK662,500CALL0.38%--%
15.)HEALTHCOR MANAGEMENT LP500,000PUT0.53%--%
16.)TIMBER HILL LLC365,000CALL0.09%--%
17.)TIMBER HILL LLC307,500CALL0.04%--%
18.)TIMBER HILL LLC288,000CALL0.03%--%
19.)TIMBER HILL LLC245,400PUT0.04%--%
20.)TIMBER HILL LLC236,800CALL0.02%--%