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Institutional Holdings of TRANSDIGM GROUP INC (TDG) on 12/31/2011

1. Company Information

Company/StockTRANSDIGM GROUP INC (stock symbol: TDG)
Funds Ownership230 out of total 3028 funds (8%) own this stock
Funds own total 50,377,730 shares, 100.80% of all outstanding shares
Funds BOUGHT 1,197,918 more shares (+2.44%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)BERKSHIRE PARTNERS LLC4,128,032Unchanged56.15%8.26%
2.)LONE PINE CAPITAL LLC3,119,601Added 0.97%2.14%6.24%
3.)PENNANT CAPITAL MANAGEMENT LLC2,806,774Cut -5.21%6.96%5.62%
4.)BLAIR WILLIAM & CO IL1,899,022Cut -1.67%0.47%3.80%
5.)VANGUARD GROUP INC1,867,095Cut -15.26%0.03%3.74%
6.)WELLS FARGO & CO MN1,800,447Added 4.43%0.13%3.60%
7.)JANUS CAPITAL MANAGEMENT LLC1,610,399New0.18%3.22%
8.)SELECT OFFSHORE ADVISORS LLC1,389,601New2.15%2.78%
9.)SELECT EQUITY GROUP INC1,389,601Cut -99.69%2.15%2.78%
10.)BAMCO INC NY 1,350,000Unchanged0.84%2.70%
11.)FMR LLC1,170,938Cut -39.76%0.02%2.34%
12.)AMERICAN CENTURY COMPANIES INC1,145,187Cut -11.82%0.18%2.29%
13.)TIMESSQUARE CAPITAL MANAGEMENT LLC1,134,950Cut -8.53%0.84%2.27%
14.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA1,090,994Added 9.67%0.03%2.18%
15.)J P MORGAN CHASE & CO1,050,882Added 6.77%0.05%2.10%
16.)ROOSEVELT INVESTMENT GROUP INC853,644Cut -7.32%2.54%1.71%
17.)WEDGE CAPITAL MANAGEMENT L L P NC833,764Added 7.28%1.13%1.67%
18.)INVESCO LTD818,609Cut -0.77%0.05%1.64%
19.)STOCKBRIDGE PARTNERS LLC763,162Unchanged13.86%1.53%
20.)FARALLON CAPITAL MANAGEMENT LLC759,399Cut -3.92%1.74%1.52%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)BERKSHIRE PARTNERS LLC4,128,032Unchanged56.15%8.26%
2.)CHURCHILL MANAGEMENT GROUP CA 459,532New26.03%0.92%
3.)MATRIX CAPITAL MANAGEMENT COMPANY LLC397,783Cut -43.40%24.87%0.80%
4.)PIVOT POINT CAPITAL PARTNERS LLC234,800Unchanged14.45%0.47%
5.)STOCKBRIDGE PARTNERS LLC763,162Unchanged13.86%1.53%
6.)RUDMAN ERROL M88,956Cut -58.93%10.92%0.18%
7.)PENNANT CAPITAL MANAGEMENT LLC2,806,774Cut -5.21%6.96%5.62%
8.)AFTON CAPITAL MANAGEMENT LLC45,000Added 28.57%5.88%0.09%
9.)MAGEE THOMSON INVESTMENT PARTNERS LLC199,185Cut -3.25%3.96%0.40%
10.)HOUND PARTNERS LLC329,434Cut -14.91%3.84%0.66%
11.)MARBLE ARCH INVESTMENTS LP200,000Unchanged3.45%0.40%
12.)VERITAS ASSET MANAGEMENT (UK) LTD514,700New3.11%1.03%
13.)WHITE ELM CAPITAL LLC84,584Cut -25.60%2.92%0.17%
14.)CRESTWOOD CAPITAL MANAGEMENT LP160,500Unchanged2.80%0.32%
15.)ROOSEVELT INVESTMENT GROUP INC853,644Cut -7.32%2.54%1.71%
16.)INDEPENDENCE CAPITAL ASSET PARTNERS LLC120,213Added 140.43%2.48%0.24%
17.)SELECT EQUITY GROUP INC1,389,601Cut -99.69%2.15%2.78%
18.)SELECT OFFSHORE ADVISORS LLC1,389,601New2.15%2.78%
19.)LONE PINE CAPITAL LLC3,119,601Added 0.97%2.14%6.24%
20.)WEATHERBIE M A & CO INC MA188,571Cut -9.23%2.06%0.38%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)JANUS CAPITAL MANAGEMENT LLC1,610,3990.18%3.22%
2.)SELECT OFFSHORE ADVISORS LLC1,389,6012.15%2.78%
3.)MAVERICK CAPITAL LTD581,1990.77%1.16%
4.)VERITAS ASSET MANAGEMENT (UK) LTD514,7003.11%1.03%
5.)CHURCHILL MANAGEMENT GROUP CA 459,53226.03%0.92%
6.)BROOKSIDE CAPITAL MANAGEMENT LLC367,9570.85%0.74%
7.)P&S CREDIT MANAGEMENT LP200,000PUT1.93%0.40%
8.)MADISON SQUARE INVESTORS LLC109,7100.11%0.22%
9.)ARCHIPEL ASSET MANAGEMENT AB48,3791.37%0.10%
10.)EULAV ASSET MANAGEMENT44,9000.28%0.09%
11.)DANA INVESTMENT ADVISORS INC32,0790.33%0.06%
12.)STATE OF NEW JERSEY COMMON PENSION FUND A25,0000.01%0.05%
13.)PRUDENTIAL FINANCIAL INC13,8300.00%0.03%
14.)HENDERSON GROUP PLC13,0870.02%0.03%
15.)TIMPANI CAPITAL MANAGEMENT LLC12,5461.37%0.03%
16.)BNP PARIBAS ARBITRAGE SNC12,1120.00%0.02%
17.)BNP PARIBAS ARBITRAGE SA12,1120.00%0.02%
18.)CHICAGO EQUITY PARTNERS LLC11,3150.04%0.02%
19.)ABSOLUTE RETURN CAPITAL LLC10,7770.16%0.02%
20.)SOUTHEAST ASSET ADVISORS INC10,2950.61%0.02%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)JANUS CAPITAL MANAGEMENT LLC1,662,4960.17%3.33%
2.)PUTNAM INVESTMENT MANAGEMENT LLC225,5110.07%0.45%
3.)AXA FINANCIAL INC96,6530.05%0.19%
4.)CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM68,8160.02%0.14%
5.)EULAV ASSET MANAGEMENT LLC54,5000.31%0.11%
6.)KOHLBERG KRAVIS ROBERTS & CO49,9000.04%0.10%
7.)CAPITAL FUND MANAGEMENT SA42,9000.06%0.09%
8.)BALYASNY ASSET MANAGEMENT LLC40,0000.21%0.08%
9.)CAXTON ASSOCIATES LLC36,6010.14%0.07%
10.)TIMBER HILL LLC34,700CALL0.01%0.07%
11.)SMITH ASSET MANAGEMENT GROUP LP25,6270.11%0.05%
12.)ARGONAUT CAPITAL MANAGEMENT CORP25,1928.11%0.05%
13.)TIMBER HILL LLC23,500PUT0.01%0.05%
14.)SUMITOMO MITSUI TRUST HOLDINGS INC22,1000.00%0.04%
15.)SANTA FE PARTNERS LLC20,1380.27%0.04%
16.)MAGNETAR FINANCIAL LLC18,3100.08%0.04%
17.)HBK INVESTMENTS L P11,2000.02%0.02%
18.)FORCE CAPITAL MANAGEMENT LLC10,0000.18%0.02%
19.)SCEPTER HOLDINGS INC8,8650.06%0.02%
20.)FIL LTD6,9000.00%0.01%