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ASPEN TECHNOLOGY INC
ASPEN TECHNOLOGY INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q3)
Portfolio Summary: 257 Institutional holders with a total value of $3,474,675,585.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WADDELL & REED FINANCIAL INC 9,623,825 363,010,000 10.45%
2 VANGUARD GROUP INC 7,086,660 267,308,000 7.69%
3 Artisan Partners Limited Partnership 4,309,255 162,545,000 4.68%
4 ALLIANCEBERNSTEIN L.P. 3,751,923 141,523,000 4.07%
5 BlackRock Institutional Trust Company, N.A. 3,592,028 135,491,000 3.90%
6 FMR LLC 2,882,059 108,712,000 3.13%
7 EAGLE ASSET MANAGEMENT INC 2,565,202 96,759,000 2.78%
8 Clearbridge Investments, LLC 2,563,208 96,684,000 2.78%
9 RENAISSANCE TECHNOLOGIES LLC 2,460,600 92,814,000 2.67%
10 BlackRock Fund Advisors 2,378,336 89,711,000 2.58%
11 RGM Capital, LLC 2,108,061 79,516,000 2.29%
12 STATE STREET CORP 1,869,512 70,520,000 2.03%
13 Allianz Asset Management GmbH 1,790,409 66,938,000 1.93%
14 Invesco Ltd. 1,712,992 64,615,000 1.86%
15 WELLS FARGO & COMPANY/MN 1,668,809 62,947,000 1.81%
16 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,610,766 60,759,000 1.75%
17 TimesSquare Capital Management, LLC 1,396,000 52,657,000 1.52%
18 ALKEON CAPITAL MANAGEMENT LLC 1,385,271 52,253,000 1.50%
19 NORTHERN TRUST CORP 1,231,575 46,455,000 1.34%
20 Stephens Investment Management Group LLC 1,173,623 44,269,000 1.27%
21 SEGALL BRYANT & HAMILL, LLC 974,567 36,761,000 1.06%
22 EAGLE BOSTON INVESTMENT MANAGEMENT INC 951,966 35,908,000 1.03%
23 CHARTWELL INVESTMENT PARTNERS, LLC 888,186 33,502,000 0.96%
24 JPMORGAN CHASE & CO 751,891 28,361,000 0.82%
25 VOYA INVESTMENT MANAGEMENT LLC 747,858 28,209,000 0.81%
26 MILLENNIUM MANAGEMENT LLC 714,850 26,964,000 0.78%
27 OppenheimerFunds, Inc. 714,380 26,946,000 0.78%
28 GEODE CAPITAL MANAGEMENT, LLC 713,199 26,901,000 0.77%
29 LOOMIS SAYLES & CO L P 709,101 26,747,000 0.77%
30 TIAA CREF INVESTMENT MANAGEMENT LLC 701,874 26,475,000 0.76%
31 FRED ALGER MANAGEMENT, LLC 668,344 25,210,000 0.73%
32 MORGAN STANLEY 662,607 24,993,000 0.72%
33 BLACKROCK ADVISORS LLC 631,461 23,819,000 0.69%
34 MARSHALL WACE, LLP 619,625 23,372,000 0.67%
35 NORGES BANK 613,239 23,131,000 0.67%
36 WELLINGTON MANAGEMENT GROUP LLP 603,299 22,757,000 0.65%
37 TEACHERS ADVISORS, LLC 600,037 22,633,000 0.65%
38 JACOBS LEVY EQUITY MANAGEMENT, INC 582,690 21,979,000 0.63%
39 PRINCIPAL FINANCIAL GROUP INC 571,372 21,552,000 0.62%
40 Granahan Investment Management, LLC 569,076 21,466,000 0.62%
41 FRANKLIN RESOURCES INC 560,000 21,123,000 0.61%
42 Gotham Asset Management, LLC 558,400 21,063,000 0.61%
43 BANK OF MONTREAL /CAN/ 556,319 20,985,000 0.60%
44 Fisher Asset Management, LLC 544,074 20,522,000 0.59%
45 AMERIPRISE FINANCIAL INC 541,556 20,428,000 0.59%
46 Bank of New York Mellon Corp 538,385 20,308,000 0.58%
47 RUSSELL FRANK CO/ 530,563 20,012,000 0.58%
48 IRONBRIDGE CAPITAL MANAGEMENT LP 491,355 18,534,000 0.53%
49 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 488,062 18,410,000 0.53%
50 Summit Creek Advisors LLC 478,918 18,065,000 0.52%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.