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Institutional Holdings of ALIGN TECHNOLOGY, INC. (ALGN) on 12/31/2011

1. Company Information

Company/StockALIGN TECHNOLOGY, INC. (stock symbol: ALGN)
Funds Ownership165 out of total 3028 funds (5%) own this stock
Funds own total 56,284,954 shares, 70.91% of all outstanding shares
Funds BOUGHT 98,444 more shares (+0.18%) in the quarter ended on 12/31/2011

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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)KORNITZER CAPITAL MANAGEMENT INC KS6,743,942Cut -9.14%2.98%8.50%
2.)BANK OF NEW YORK MELLON CORP4,486,452Cut -10.14%0.05%5.65%
3.)VANGUARD GROUP INC3,433,594Added 1.22%0.01%4.33%
4.)BLACKROCK FUND ADVISORS2,711,532Added 2.74%0.03%3.42%
5.)CAPITAL WORLD INVESTORS1,800,000Added 14.65%0.02%2.27%
6.)ALGER FRED MANAGEMENT INC1,750,728Cut -25.59%0.30%2.21%
7.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA1,729,205Added 5.30%0.01%2.18%
8.)OAK RIDGE INVESTMENTS LLC1,707,657Cut -1.38%1.60%2.15%
9.)LORD ABBETT & CO LLC1,705,108Added 125.36%0.10%2.15%
10.)HUSSMAN ECONOMETRICS ADVISORS INC1,500,000Unchanged0.57%1.89%
11.)TIMESSQUARE CAPITAL MANAGEMENT LLC1,461,850Cut -2.16%0.27%1.84%
12.)STATE STREET CORP1,287,138Added 3.57%0.01%1.62%
13.)THRIVENT FINANCIAL FOR LUTHERANS1,192,200Cut -0.43%0.24%1.50%
14.)AMERIPRISE FINANCIAL INC1,099,400Cut -23.69%0.02%1.39%
15.)ORBIMED ADVISORS LLC1,024,000Cut -1.35%0.80%1.29%
16.)BLAIR WILLIAM & CO IL950,709Cut -23.04%0.06%1.20%
17.)NORTHERN TRUST CORP907,169Added 0.88%0.01%1.14%
18.)BLACKROCK ADVISORS LLC867,959Added 862.54%0.02%1.09%
19.)DIMENSIONAL FUND ADVISORS INC767,424Cut -4.04%0.02%0.97%
20.)REDMILE GROUP LLC688,399Cut -10.04%6.09%0.87%



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

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)REDMILE GROUP LLC688,399Cut -10.04%6.09%0.87%
2.)BROADFIN CAPITAL LLC350,648Cut -17.68%3.82%0.44%
3.)OMT CAPITAL MANAGEMENT LLC251,860Added 10.76%3.80%0.32%
4.)KORNITZER CAPITAL MANAGEMENT INC KS6,743,942Cut -9.14%2.98%8.50%
5.)CONESTOGA CAPITAL ADVISORS LLC551,938Added 4.54%2.45%0.70%
6.)HOKANSON ASSOCIATES INC134,326Cut -0.84%1.98%0.17%
7.)EMS CAPITAL LP240,300New1.74%0.30%
8.)OAK RIDGE INVESTMENTS LLC1,707,657Cut -1.38%1.60%2.15%
9.)PIER CAPITAL LLC371,516Cut -5.40%1.23%0.47%
10.)THOMSON HORSTMANN & BRYANT INC580,750Cut -22.55%0.97%0.73%
11.)AH LISANTI CAPITAL GROWTH LLC95,675New0.92%0.12%
12.)ORBIMED ADVISORS LLC1,024,000Cut -1.35%0.80%1.29%
13.)PERELLA WEINBERG PARTNERS CAPITAL MANAGEMENT LP272,439Cut -25.24%0.67%0.34%
14.)ARBOR CAPITAL MANAGEMENT LLC320,800New0.67%0.40%
15.)COLUMBIA PARTNERS L L C INVESTMENT MANAGEMENT520,649Cut -2.70%0.64%0.66%
16.)COPPER ROCK CAPITAL PARTNERS LLC196,374New0.62%0.25%
17.)GRANAHAN INVESTMENT MANAGEMENT INC MA658,250Cut -19.52%0.59%0.83%
18.)HUSSMAN ECONOMETRICS ADVISORS INC1,500,000Unchanged0.57%1.89%
19.)FULLER & THALER ASSET MANAGEMENT INC232,900New0.52%0.29%
20.)CAMPBELL & CO INVESTMENT ADVISER LLC23,499New0.48%0.03%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)TURNER INVESTMENT PARTNERS INC405,7300.09%0.51%
2.)ARBOR CAPITAL MANAGEMENT LLC320,8000.67%0.40%
3.)DRIEHAUS CAPITAL MANAGEMENT LLC288,2130.35%0.36%
4.)EMS CAPITAL LP240,3001.74%0.30%
5.)FULLER & THALER ASSET MANAGEMENT INC232,9000.52%0.29%
6.)COPPER ROCK CAPITAL PARTNERS LLC196,3740.62%0.25%
7.)STANDARD LIFE INVESTMENTS LTD176,1000.04%0.22%
8.)VINIK ASSET MANAGEMENT L P150,0000.07%0.19%
9.)CASTLEARK MANAGEMENT LLC101,1750.10%0.13%
10.)NEUBERGER BERMAN GROUP LLC96,5000.00%0.12%
11.)AH LISANTI CAPITAL GROWTH LLC95,6750.92%0.12%
12.)FMR LLC75,0000.00%0.09%
13.)ARONSON & JOHNSON & ORTIZ LP66,6000.01%0.08%
14.)MADISON SQUARE INVESTORS LLC53,5030.01%0.07%
15.)HARRIS FINANCIAL CORP40,0090.00%0.05%
16.)CALVERT ASSET MANAGEMENT CO INC MD39,2450.16%0.05%
17.)HARRIS FINANCIAL CORP37,300CALL0.00%0.05%
18.)ZACKS INVESTMENT MANAGEMENT25,8470.05%0.03%
19.)DP FUND MANAGEMENT LTD25,5970.37%0.03%
20.)CAMPBELL & CO INVESTMENT ADVISER LLC23,4990.48%0.03%

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

No.FundSharesPut/Call% Port.% Out. Shrs
1.)ARCHON CAPITAL MANAGEMENT LLC327,9602.73%0.41%
2.)TIAA CREF INVESTMENT MANAGEMENT LLC307,1210.01%0.39%
3.)TEACHERS ADVISORS INC165,1950.01%0.21%
4.)STRAUS CAPITAL MANAGEMENT LLC 164,8631.31%0.21%
5.)OPPENHEIMER FUNDS INC116,3710.00%0.15%
6.)MADISON SQUARE INVESTORS LLC64,9710.01%0.08%
7.)ANALYTIC INVESTORS INC CA55,9620.02%0.07%
8.)JAY JEFFREY R50,0000.71%0.06%
9.)GW CAPITAL MANAGEMENT LLC46,4410.02%0.06%
10.)WELLINGTON MANAGEMENT CO LLP43,9710.00%0.06%
11.)MAGNETAR FINANCIAL LLC39,6310.03%0.05%
12.)SUSQUEHANNA INTERNATIONAL GROUP LLP23,4190.00%0.03%
13.)TUDOR INVESTMENT CORP ET AL22,9000.01%0.03%
14.)QUEST INVESTMENT MANAGEMENT INC OR19,1950.02%0.02%
15.)PARAMETRICA MANAGEMENT LTD19,1330.22%0.02%
16.)FIRST TRUST ADVISORS LP14,7850.00%0.02%
17.)KNIGHT CAPITAL GROUP INC12,2770.00%0.02%
18.)BNP PARIBAS ARBITRAGE SNC10,7650.00%0.01%
19.)BNP PARIBAS ARBITRAGE SA10,7650.00%0.01%
20.)PEAK6 INVESTMENTS LP10,000CALL0.00%0.01%