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AMEREN CORP
AMEREN CORP. Institutional holdings reported to the SEC.

Institutional Holders (2014Q1)
Portfolio Summary: 419 Institutional holders with a total value of $6,314,920,250.
#
Manager Name
Shares
Value ($)
%
Options
Notes
201 OMERS ADMINISTRATION Corp 36,000 1,483,000 0.02%
202 World Asset Management Inc 35,183 1,449,000 0.02%
203 Livforsakringsbolaget Skandia, Omsesidigt 34,881 1,437,000 0.02%
204 JANUS HENDERSON GROUP PLC 34,495 1,421,000 0.02%
205 FIRST MIDWEST BANK TRUST DIVISION 34,112 1,405,000 0.02%
206 SAC Capital Advisors LP 33,694 1,388,000 0.02%
207 Plancorp, LLC 33,256 1,371,000 0.02%
208 NEW MEXICO EDUCATIONAL RETIREMENT BOARD 31,746 1,308,000 0.02%
209 ANCHOR CAPITAL ADVISORS LLC 31,637 1,303,000 0.02%
210 ANALYTIC INVESTORS, LLC 31,093 1,281,000 0.02%
211 VAN ECK ASSOCIATES CORP 30,435 1,254,000 0.02%
212 REGIONS FINANCIAL CORP 30,398 1,252,000 0.02%
213 CIBC Asset Management Inc 29,877 1,231,000 0.02%
214 GENERAL MOTORS INVESTMENT MANAGEMENT CORP 29,771 1,227,000 0.02%
215 ASSETMARK, INC 27,053 1,115,000 0.02%
216 Sumitomo Mitsui DS Asset Management Company, Ltd 27,014 1,112,000 0.02%
217 Banyan Partners, LLC 26,315 1,084,000 0.02%
218 Cambridge Investment Research Advisors, Inc. 26,110 1,076,000 0.02%
219 MUFG Americas Holdings Corp 25,610 1,055,000 0.02%
220 ROTHSCHILD INVESTMENT LLC /IL 25,295 1,042,000 0.02%
221 PROFUND ADVISORS LLC 25,233 1,040,000 0.02%
222 BLACKROCK ADVISORS LLC 25,072 1,033,000 0.02%
223 Employees Retirement System of Texas 25,000 1,030,000 0.02%
224 SHELTON CAPITAL MANAGEMENT 24,708 1,018,000 0.02%
225 HIGHBRIDGE CAPITAL MANAGEMENT LLC 24,680 1,017,000 0.02%
226 HANCOCK WHITNEY CORP 24,056 991,000 0.02%
227 GSA CAPITAL PARTNERS LLP 23,968 987,000 0.02%
228 CENTRAL TRUST Co 23,781 979,000 0.02%
229 Kavar Capital Partners, LLC 23,732 977,000 0.02%
230 TOKIO MARINE ASSET MANAGEMENT CO LTD 23,207 956,000 0.02%
231 CAPSTONE ASSET MANAGEMENT CO 23,174 955,000 0.02%
232 HAP Trading, LLC 23,004 948,000 0.02%
233 GLG LLC 22,479 926,000 0.01%
234 ABERDEEN ASSET MANAGEMENT PLC/UK 22,352 921,000 0.01%
235 SECURIAN ASSET MANAGEMENT, INC 21,815 899,000 0.01%
236 FRANKLIN STREET ADVISORS INC /NC 21,035 867,000 0.01%
237 Creative Planning 20,414 841,000 0.01%
238 Mirae Asset Global Investments Co., Ltd. 20,394 840,000 0.01%
239 Kentucky Retirement Systems 20,113 829,000 0.01%
240 AXA S.A. 19,852 818,000 0.01%
241 FIFTH THIRD BANCORP 19,493 803,000 0.01%
242 Louisiana State Employees Retirement System 19,200 791,000 0.01%
243 TDAM USA INC. 18,598 766,000 0.01%
244 SUNTRUST BANKS INC 18,053 743,000 0.01%
245 OSBORNE PARTNERS CAPITAL MANAGEMENT, LLC 18,013 742,000 0.01%
246 CLINTON GROUP INC 17,590 725,000 0.01%
247 Nuveen Asset Management, LLC 17,543 723,000 0.01%
248 First Dallas Securities Inc. 17,531 722,000 0.01%
249 F&C Asset Management plc 17,255 711,000 0.01%
250 WESTPAC BANKING CORP 17,202 708,723 0.01%
Page 5 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.