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

Institutional Holders (2015Q1)
Portfolio Summary: 246 Institutional holders with a total value of $3,459,568,937.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WADDELL & REED FINANCIAL INC 10,333,490 397,736,000 11.50%
2 VANGUARD GROUP INC 7,553,770 290,744,000 8.40%
3 Artisan Partners Limited Partnership 5,454,062 209,927,000 6.07%
4 Marble Arch Investments, LP 3,102,000 119,396,000 3.45%
5 ALLIANCEBERNSTEIN L.P. 2,938,525 113,104,000 3.27%
6 Clearbridge Investments, LLC 2,846,831 109,575,000 3.17%
7 BlackRock Fund Advisors 2,704,870 104,110,000 3.01%
8 RGM Capital, LLC 2,589,357 99,664,000 2.88%
9 BlackRock Institutional Trust Company, N.A. 2,551,125 98,193,000 2.84%
10 Fisher Asset Management, LLC 2,353,475 90,585,000 2.62%
11 KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 2,054,237 79,068,000 2.29%
12 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,951,889 75,128,208 2.17%
13 FMR LLC 1,878,177 72,291,000 2.09%
14 RENAISSANCE TECHNOLOGIES LLC 1,872,600 72,076,000 2.08%
15 STATE STREET CORP 1,848,896 71,164,000 2.06%
16 TimesSquare Capital Management, LLC 1,625,700 62,573,000 1.81%
17 EAGLE ASSET MANAGEMENT INC 1,423,028 54,772,000 1.58%
18 Invesco Ltd. 1,338,989 51,537,000 1.49%
19 Gotham Asset Management, LLC 1,231,005 47,381,000 1.37%
20 ALKEON CAPITAL MANAGEMENT LLC 1,207,271 46,468,000 1.34%
21 Neuberger Berman Group LLC 1,203,800 46,334,000 1.34%
22 NORTHERN TRUST CORP 1,180,125 45,422,000 1.31%
23 GW&K Investment Management, LLC 1,086,442 41,817,000 1.21%
24 MANNING & NAPIER ADVISORS LLC 985,350 37,925,000 1.10%
25 JPMORGAN CHASE & CO 928,642 35,744,000 1.03%
26 NORGES BANK 922,658 35,513,000 1.03%
27 SEGALL BRYANT & HAMILL, LLC 872,827 33,595,000 0.97%
28 Stephens Investment Management Group LLC 778,644 29,970,000 0.87%
29 GEODE CAPITAL MANAGEMENT, LLC 742,950 28,595,000 0.83%
30 SMITH ASSET MANAGEMENT GROUP LP 721,348 27,763,000 0.80%
31 WELLINGTON MANAGEMENT GROUP LLP 648,743 24,970,000 0.72%
32 FIL Ltd 617,060 23,750,000 0.69%
33 EAGLE BOSTON INVESTMENT MANAGEMENT INC 594,689 22,889,000 0.66%
34 PRINCIPAL FINANCIAL GROUP INC 570,200 21,947,000 0.63%
35 TIAA CREF INVESTMENT MANAGEMENT LLC 565,702 21,774,000 0.63%
36 STIFEL FINANCIAL CORP 548,440 21,110,000 0.61%
37 TEACHERS ADVISORS, LLC 545,959 21,014,000 0.61%
38 Bank of New York Mellon Corp 516,928 19,897,000 0.58%
39 BANK OF MONTREAL /CAN/ 495,257 19,062,000 0.55%
40 Numeric Investors LLC 484,849 18,662,000 0.54%
41 JACOBS LEVY EQUITY MANAGEMENT, INC 481,016 18,514,000 0.54%
42 MORGAN STANLEY 472,739 18,196,000 0.53%
43 MILLENNIUM MANAGEMENT LLC 465,017 17,899,000 0.52%
44 PRICE T ROWE ASSOCIATES INC /MD/ 459,291 17,678,000 0.51%
45 WELLS FARGO & COMPANY/MN 444,517 17,098,000 0.49%
46 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 430,899 16,585,000 0.48%
47 DEUTSCHE BANK AG\ 403,095 15,512,000 0.45%
48 BLACKROCK ADVISORS LLC 374,240 14,404,000 0.42%
49 Summit Creek Advisors LLC 368,753 14,193,000 0.41%
50 FRANKLIN RESOURCES INC 350,000 13,472,000 0.39%
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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.