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

Institutional Holders (2015Q4)
Portfolio Summary: 258 Institutional holders with a total value of $3,457,145,308.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 WADDELL & REED FINANCIAL INC 10,217,490 385,812,000 11.16%
2 VANGUARD GROUP INC 7,585,718 286,436,000 8.29%
3 Artisan Partners Limited Partnership 5,674,805 214,281,000 6.20%
4 ALLIANCEBERNSTEIN L.P. 4,444,289 168,483,000 4.87%
5 Clearbridge Investments, LLC 2,849,536 107,598,000 3.11%
6 AJO, LP 2,482,265 93,730,000 2.71%
7 BlackRock Fund Advisors 2,400,531 90,644,000 2.62%
8 Fisher Asset Management, LLC 2,297,681 86,760,000 2.51%
9 KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC 2,221,545 83,886,000 2.43%
10 BlackRock Institutional Trust Company, N.A. 2,198,504 83,016,000 2.40%
11 RENAISSANCE TECHNOLOGIES LLC 2,189,700 82,683,000 2.39%
12 Two Creeks Capital Management, LP 1,967,111 74,278,000 2.15%
13 Neuberger Berman Group LLC 1,936,284 73,114,000 2.11%
14 Numeric Investors LLC 1,677,911 63,358,000 1.83%
15 STATE STREET CORP 1,622,234 61,259,000 1.77%
16 RGM Capital, LLC 1,621,872 61,242,000 1.77%
17 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 1,614,581 60,966,000 1.76%
18 Invesco Ltd. 1,448,831 54,709,000 1.58%
19 FMR LLC 1,335,714 50,437,000 1.46%
20 MANNING & NAPIER ADVISORS LLC 1,203,311 45,436,000 1.31%
21 TimesSquare Capital Management, LLC 1,175,300 44,379,000 1.28%
22 NORTHERN TRUST CORP 1,164,247 43,962,000 1.27%
23 EAGLE ASSET MANAGEMENT INC 1,008,611 38,085,000 1.10%
24 ALKEON CAPITAL MANAGEMENT LLC 900,928 34,019,000 0.98%
25 BAMCO INC /NY/ 890,576 33,628,000 0.97%
26 Gotham Asset Management, LLC 858,273 32,408,000 0.94%
27 Stephens Investment Management Group LLC 791,219 29,876,000 0.86%
28 GW&K Investment Management, LLC 789,675 29,818,000 0.86%
29 FIL Ltd 780,272 29,463,000 0.85%
30 ACADIAN ASSET MANAGEMENT LLC 778,236 29,387,000 0.85%
31 GEODE CAPITAL MANAGEMENT, LLC 773,104 29,192,000 0.84%
32 SMITH ASSET MANAGEMENT GROUP LP 736,614 27,756,000 0.80%
33 JPMORGAN CHASE & CO 713,436 26,940,000 0.78%
34 KORNITZER CAPITAL MANAGEMENT INC /KS 683,075 25,793,000 0.75%
35 RUSSELL FRANK CO/ 651,539 24,828,000 0.72%
36 NORGES BANK 613,888 23,180,000 0.67%
37 WELLS FARGO & COMPANY/MN 611,022 23,072,000 0.67%
38 PRINCIPAL FINANCIAL GROUP INC 599,081 22,621,000 0.65%
39 WELLINGTON MANAGEMENT GROUP LLP 566,381 21,386,000 0.62%
40 DEUTSCHE BANK AG\ 564,187 21,301,000 0.62%
41 STIFEL FINANCIAL CORP 285,550 20,524,000 0.59%
42 PRICE T ROWE ASSOCIATES INC /MD/ 510,311 19,269,000 0.56%
43 TIAA CREF INVESTMENT MANAGEMENT LLC 506,091 19,110,000 0.55%
44 PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 492,983 18,615,000 0.54%
45 Copper Rock Capital Partners, LLC 489,697 18,491,000 0.53%
46 TEACHERS ADVISORS, LLC 454,161 17,149,000 0.50%
47 Bank of New York Mellon Corp 441,554 16,673,000 0.48%
48 MORGAN STANLEY 403,483 15,235,000 0.44%
49 FRANKLIN RESOURCES INC 400,014 15,105,000 0.44%
50 DIMENSIONAL FUND ADVISORS LP 394,025 14,879,000 0.43%
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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.