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Institutional Holdings of BOSTON SCIENTIFIC CORP. (BSX) on 12/31/2011

1. Company Information

Company/StockBOSTON SCIENTIFIC CORP. (stock symbol: BSX)
Funds Ownership381 out of total 3028 funds (13%) own this stock
Funds own total 1,118,430,238 shares, 73.10% of all outstanding shares
Funds SOLD -93,294,822 shares (-7.70%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)DODGE & COX112,575,053Cut -0.50%0.85%7.36%
2.)PRIMECAP MANAGEMENT CO CA 63,628,508Cut -1.40%0.54%4.16%
3.)CAPITAL RESEARCH GLOBAL INVESTORS63,272,890Cut -43.77%0.15%4.14%
4.)VANGUARD GROUP INC57,480,980Cut -0.62%0.05%3.76%
5.)GOLDMAN SACHS GROUP INC53,483,260Cut -22.81%0.14%3.50%
6.)STATE STREET CORP53,244,311Cut -2.09%0.05%3.48%
7.)FRANKLIN RESOURCES INC50,903,854Added 11.30%0.20%3.33%
8.)MANNING & NAPIER ADVISORS INC47,742,054Cut -15.44%1.34%3.12%
9.)WELLINGTON MANAGEMENT CO LLP47,617,856Added 36.70%0.10%3.11%
10.)FMR LLC44,485,279Cut -25.93%0.05%2.91%
11.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA39,582,540Added 4.80%0.05%2.59%
12.)BRANDES INVESTMENT PARTNERS LP21,688,588Cut -1.91%1.07%1.42%
13.)INVESCO LTD19,641,824Cut -41.04%0.06%1.28%
14.)BLACKROCK FUND ADVISORS17,323,630Added 0.60%0.05%1.13%
15.)COOPERMAN LEON G16,456,100Cut -1.61%2.21%1.08%
16.)NORTHERN TRUST CORP15,936,552Cut -5.52%0.04%1.04%
17.)BANK OF NEW YORK MELLON CORP14,383,078Added 5.13%0.03%0.94%
18.)DIMENSIONAL FUND ADVISORS INC14,094,741Added 3.70%0.10%0.92%
19.)ELM RIDGE MANAGEMENT LLC13,305,756Added 88.48%3.59%0.87%
20.)AMERICAN CENTURY COMPANIES INC10,089,767Added 12.04%0.09%0.66%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)APPALOOSA MANAGEMENT LP7,797,503New5.44%0.51%
2.)EXPO CAPITAL MANAGEMENT LLC3,500,000New4.59%0.23%
3.)CAMBER CAPITAL MANAGEMENT LLC6,000,000Added 71.43%4.34%0.39%
4.)SECTOR GAMMA ASA2,716,000Added 142.39%4.12%0.18%
5.)ELM RIDGE MANAGEMENT LLC13,305,756Added 88.48%3.59%0.87%
6.)BROADFIN CAPITAL LLC1,458,600New3.57%0.10%
7.)VALUEWORKS LLC839,860Cut -1.25%3.30%0.05%
8.)MCGLINN CAPITAL MANAGEMENT INC339,300Added 24.01%2.74%0.02%
9.)KING INVESTMENT ADVISORS INC TX1,563,600Cut -0.53%2.65%0.10%
10.)OPTIMUM INVESTMENT ADVISORS3,427,000Cut -19.70%2.56%0.22%
11.)FAIRPOINTE CAPITAL LLC3,427,000Cut -85.85%2.56%0.22%
12.)COOPERMAN LEON G16,456,100Cut -1.61%2.21%1.08%
13.)SABA CAPITAL MANAGEMENT LP2,042,217New2.14%0.13%
14.)RAPTOR CAPITAL MANAGEMENT LP733,600CALLAdded 91.24%2.12%0.05%
15.)KITZINGER LAUTMANN CAPITAL MANAGEMENT INC867,130Cut -20.47%1.77%0.06%
16.)LMM LLC MD 3,006,800Added 765.02%1.54%0.20%
17.)CAI CAPITAL MANAGEMENT INC145,250New1.43%0.01%
18.)MANNING & NAPIER ADVISORS INC47,742,054Cut -15.44%1.34%3.12%
19.)GARGOYLE SERVICES LLC426,450Added 102.67%1.23%0.03%
20.)BRANDES INVESTMENT PARTNERS LP21,688,588Cut -1.91%1.07%1.42%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)PGGM INVESTMENTS8,642,9590.27%0.56%
2.)APPALOOSA MANAGEMENT LP7,797,5035.44%0.51%
3.)RENAISSANCE TECHNOLOGIES LLC4,576,5050.10%0.30%
4.)EXPO CAPITAL MANAGEMENT LLC3,500,0004.59%0.23%
5.)SABA CAPITAL MANAGEMENT LP2,042,2172.14%0.13%
6.)BROADFIN CAPITAL LLC1,458,6003.57%0.10%
7.)JANUS CAPITAL MANAGEMENT LLC1,278,3000.01%0.08%
8.)MADISON SQUARE INVESTORS LLC852,7360.05%0.06%
9.)DOW CHEMICAL CO DE 850,0000.44%0.06%
10.)NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATION613,2000.10%0.04%
11.)ANDRA AP FONDEN595,5000.10%0.04%
12.)FJARDE AP FONDEN (THE FOURTH SWEDISH NATIONAL PENSIONFUND)539,2780.07%0.04%
13.)NATIXIS510,8980.13%0.03%
14.)GREEN ARROW CAPITAL MANAGEMENT LLC499,2230.34%0.03%
15.)CENTRE ASSET MANAGEMENT LLC481,3000.61%0.03%
16.)BOGLE INVESTMENT MANAGEMENT L P DE 480,1000.64%0.03%
17.)TD SECURITIES (USA) LLC475,5050.07%0.03%
18.)JEFFERIES GROUP INC DE 468,700CALL0.02%0.03%
19.)CATAPULT CAPITAL MANAGEMENT LLC400,000CALL0.32%0.03%
20.)SPARK LP DE368,9000.50%0.02%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)AXA FINANCIAL INC5,676,0460.22%0.37%
2.)WEDGE CAPITAL MANAGEMENT L L P NC3,892,4500.37%0.25%
3.)UBS OCONNOR LLC2,611,7640.29%0.17%
4.)ADAGE CAPITAL PARTNERS GP LLC2,104,5620.06%0.14%
5.)JANUS CAPITAL MANAGEMENT LLC1,339,8000.01%0.09%
6.)FEDERATED INVESTORS INC PA 1,025,6100.04%0.07%
7.)DIAMOND CAPITAL MANAGEMENT INC DE 861,0000.53%0.06%
8.)TIMBER HILL LLC702,900CALL0.01%0.05%
9.)CAXTON ASSOCIATES LLC626,8000.18%0.04%
10.)ING INVESTMENT MANAGEMENT (EUROPE) BV477,9980.03%0.03%
11.)PROXIMA CAPITAL MANAGEMENT LLC436,700CALL0.48%0.03%
12.)MADISON SQUARE INVESTORS LLC431,1090.03%0.03%
13.)TIMBER HILL LLC376,400PUT0.01%0.02%
14.)HAMBRECHT & QUIST CAPITAL MANAGEMENT LLC325,9370.45%0.02%
15.)PLATTE RIVER CAPITAL LLC249,0000.16%0.02%
16.)FIRST MIDWEST BANK TRUST DIVISION171,0700.22%0.01%
17.)NEEDHAM INVESTMENT MANAGEMENT LLC165,9380.22%0.01%
18.)GW CAPITAL MANAGEMENT LLC154,5680.03%0.01%
19.)GOLDEN CAPITAL MANAGEMENT LLC114,3600.04%0.01%
20.)INDICES PAC RESEARCH CORP105,3630.50%0.01%