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

Institutional Holders (2015Q3)
Portfolio Summary: 243 Institutional holders with a total value of $3,437,339,575.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WADDELL & REED FINANCIAL INC 10,217,490 387,345,000 11.27%
2 VANGUARD GROUP INC 7,408,163 280,844,000 8.17%
3 Artisan Partners Limited Partnership 5,872,660 222,633,000 6.48%
4 ALLIANCEBERNSTEIN L.P. 3,115,916 118,124,000 3.44%
5 Clearbridge Investments, LLC 2,840,080 107,667,000 3.13%
6 AJO, LP 2,710,597 102,759,000 2.99%
7 Marble Arch Investments, LP 2,467,939 93,560,000 2.72%
8 KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 2,336,543 88,578,000 2.58%
9 Fisher Asset Management, LLC 2,303,625 87,330,000 2.54%
10 BlackRock Fund Advisors 2,288,323 86,750,000 2.52%
11 BlackRock Institutional Trust Company, N.A. 2,208,118 83,710,000 2.44%
12 RENAISSANCE TECHNOLOGIES LLC 2,193,709 83,164,000 2.42%
13 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,932,245 73,251,000 2.13%
14 RGM Capital, LLC 1,757,303 66,619,000 1.94%
15 Neuberger Berman Group LLC 1,657,601 62,840,000 1.83%
16 FMR LLC 1,556,946 59,024,000 1.72%
17 Numeric Investors LLC 1,538,259 58,315,000 1.70%
18 MANNING & NAPIER ADVISORS LLC 1,350,331 51,190,000 1.49%
19 Invesco Ltd. 1,320,826 50,073,000 1.46%
20 ALKEON CAPITAL MANAGEMENT LLC 1,155,928 46,503,000 1.35%
21 TimesSquare Capital Management, LLC 1,183,400 44,863,000 1.31%
22 NORTHERN TRUST CORP 1,148,352 43,534,000 1.27%
23 EAGLE ASSET MANAGEMENT INC 1,147,383 43,497,000 1.27%
24 ACADIAN ASSET MANAGEMENT LLC 995,196 37,729,000 1.10%
25 FIL Ltd 943,943 35,785,000 1.04%
26 JPMORGAN CHASE & CO 914,195 34,657,000 1.01%
27 RUSSELL FRANK CO/ 902,088 34,190,000 0.99%
28 SEGALL BRYANT & HAMILL, LLC 880,925 33,396,000 0.97%
29 GW&K Investment Management, LLC 846,362 32,086,000 0.93%
30 Stephens Investment Management Group LLC 812,924 30,818,000 0.90%
31 Gotham Asset Management, LLC 810,372 30,721,000 0.89%
32 WELLINGTON MANAGEMENT GROUP LLP 780,984 29,607,000 0.86%
33 SMITH ASSET MANAGEMENT GROUP LP 754,840 28,612,000 0.83%
34 GEODE CAPITAL MANAGEMENT, LLC 725,940 27,520,000 0.80%
35 Two Creeks Capital Management, LP 718,746 27,248,000 0.79%
36 DEUTSCHE BANK AG\ 697,608 26,445,000 0.77%
37 KORNITZER CAPITAL MANAGEMENT INC /KS 677,655 25,690,000 0.75%
38 WELLS FARGO & COMPANY/MN 601,616 22,806,000 0.66%
39 PRINCIPAL FINANCIAL GROUP INC 588,848 22,324,000 0.65%
40 NORGES BANK 536,888 20,353,000 0.59%
41 TIAA CREF INVESTMENT MANAGEMENT LLC 515,125 19,528,000 0.57%
42 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 492,983 18,689,000 0.54%
43 Copper Rock Capital Partners, LLC 491,613 18,637,000 0.54%
44 PRICE T ROWE ASSOCIATES INC /MD/ 474,991 18,007,000 0.52%
45 TEACHERS ADVISORS, LLC 455,099 17,253,000 0.50%
46 Bank of New York Mellon Corp 445,927 16,904,000 0.49%
47 VOYA INVESTMENT MANAGEMENT LLC 439,543 16,663,000 0.48%
48 FRANKLIN RESOURCES INC 400,014 15,165,000 0.44%
49 Atria Investments, Inc 556 14,658,000 0.43%
50 DIMENSIONAL FUND ADVISORS LP 361,598 13,707,000 0.40%
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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.