Dark
Light
System
Security
AMEREN CORP
AMEREN CORP. Institutional holdings reported to the SEC.

Institutional Holders (2015Q3)
Portfolio Summary: 438 Institutional holders with a total value of $6,219,122,330.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 VANGUARD GROUP INC 20,815,766 879,881,000 14.15%
2 LAZARD ASSET MANAGEMENT LLC 6,334,042 267,739,000 4.31%
3 MILLENNIUM MANAGEMENT LLC 6,252,058 264,274,000 4.25%
4 BlackRock Institutional Trust Company, N.A. 6,243,784 263,925,000 4.24%
5 FRANKLIN RESOURCES INC 5,364,290 226,749,000 3.65%
6 Epoch Investment Partners, Inc. 4,614,041 195,036,000 3.14%
7 BlackRock Fund Advisors 3,564,293 150,663,000 2.42%
8 WELLINGTON MANAGEMENT GROUP LLP 3,161,471 133,635,000 2.15%
9 NORTHERN TRUST CORP 3,038,737 128,447,000 2.07%
10 Allianz Asset Management GmbH 2,871,676 121,386,000 1.95%
11 Bank of New York Mellon Corp 2,807,393 118,668,000 1.91%
12 JENNISON ASSOCIATES LLC 2,341,872 98,991,000 1.59%
13 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 2,226,559 94,117,000 1.51%
14 AMERIPRISE FINANCIAL INC 2,219,461 93,815,000 1.51%
15 BlackRock Group LTD 2,158,182 91,227,000 1.47%
16 Boston Partners 2,042,452 86,334,000 1.39%
17 GEODE CAPITAL MANAGEMENT, LLC 1,966,130 82,949,000 1.33%
18 Legal & General Group Plc 1,901,397 80,368,000 1.29%
19 DUFF & PHELPS INVESTMENT MANAGEMENT CO 1,800,000 76,086,000 1.22%
20 FIL Ltd 1,742,440 73,653,000 1.18%
21 PICTET ASSET MANAGEMENT LTD 1,695,803 71,682,000 1.15%
22 PRINCIPAL FINANCIAL GROUP INC 1,667,050 70,466,000 1.13%
23 AMERICAN CENTURY COMPANIES INC 1,627,630 68,800,000 1.11%
24 LSV ASSET MANAGEMENT 1,621,590 68,544,000 1.10%
25 FIRST MANHATTAN CO. LLC. 1,569,334 66,335,000 1.07%
26 GUGGENHEIM CAPITAL LLC 1,539,414 65,070,000 1.05%
27 LUMINUS MANAGEMENT LLC 1,528,436 64,607,000 1.04%
28 GOLDMAN SACHS GROUP INC 1,433,900 60,611,000 0.97%
29 MORGAN STANLEY 1,424,269 60,204,000 0.97%
30 NORGES BANK 1,290,665 54,556,000 0.88%
31 SYSTEMATIC FINANCIAL MANAGEMENT LP 1,232,344 52,091,000 0.84%
32 WELLS FARGO & COMPANY/MN 1,158,653 48,977,000 0.79%
33 PGGM Investments 1,030,202 43,547,000 0.70%
34 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 969,983 41,002,000 0.66%
35 TIAA CREF INVESTMENT MANAGEMENT LLC 943,560 39,884,000 0.64%
36 VOYA INVESTMENT MANAGEMENT LLC 891,606 37,688,000 0.61%
37 Numeric Investors LLC 891,500 37,684,000 0.61%
38 RENAISSANCE TECHNOLOGIES LLC 849,100 35,891,000 0.58%
39 FIRST TRUST ADVISORS LP 835,302 35,308,000 0.57%
40 MANUFACTURERS LIFE INSURANCE COMPANY, THE 798,142 33,738,000 0.54%
41 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 773,300 32,687,000 0.53%
42 Invesco Ltd. 768,446 32,482,000 0.52%
43 Sumitomo Mitsui Trust Group, Inc. 760,407 32,142,000 0.52%
44 GATEWAY INVESTMENT ADVISERS LLC 723,325 30,575,000 0.49%
45 PARAMETRIC PORTFOLIO ASSOCIATES LLC 714,284 30,193,000 0.49%
46 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 698,870 29,542,000 0.48%
47 UNITED SERVICES AUTOMOBILE ASSOCIATION 697,332 29,476,000 0.47%
48 NEW YORK STATE COMMON RETIREMENT FUND 683,700 28,900,000 0.46%
49 AQR CAPITAL MANAGEMENT LLC 608,654 25,728,000 0.41%
50 GABELLI FUNDS LLC 604,000 25,531,000 0.41%
Page 1 of 9

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.