Ameren: which funds bought and sold

Institutions that bought and sold Ameren shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 495 institutions that filed 13F reports for both quarters added to or opened positions in Ameren, and 324 cut or closed them. Together they added a net 11.3M shares, +5.0% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 4.1M shares (+6.4%); index fund managers were net buyers of 2.7M shares (+3.1%). 93 opened a new position and 77 sold out entirely.

Bought, Q2 2026 495 institutions, 93 of them new holders Sold, Q2 2026 324 institutions, 77 of them sold out

Net change, all compared +11.3M shares (+5.0%)

Net change, active managers +4.1M shares (+6.4%), 33 bought, 34 sold

Buyers versus sellers

institutions compared, 1,009

495 bought 190 324 sold

Active managers and hedge funds 33 bought · 34 sold · +4.1M

Index fund managers 10 bought · 2 sold · +2.7M

Other institutions 452 bought · 288 sold · +4.5M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
T. Rowe Price Investment Management, Inc. Active manager	+4.6M +61.0%	12.1M	$1.4B
Blackrock, Inc. Index funds	+2.0M +8.5%	25.8M	$2.9B
Point72 Asset Management, L.P. Hedge fund	+1.4M +207.5%	2.1M	$242M
Barclays PLC	+940K +57.4%	2.6M	$291M
Voya Investment Management LLC	+937K +1468.7%	1.0M	$113M
Deutsche Bank Ag\	+831K +58.8%	2.2M	$254M
Covalis Capital LLP	+630K New position	630K	$71.2M
Goldman Sachs Group Inc	+591K +19.2%	3.7M	$416M
Morgan Stanley	+475K +16.2%	3.4M	$385M
Treasurer Of The State Of North Carolina	+461K +331.9%	600K	$67.8M
Franklin Resources Inc Active manager	+417K +7.3%	6.1M	$689M
Millennium Management LLC Hedge fund	+369K +72.4%	878K	$99.3M
Mizuho Markets Americas LLC	+354K New position	354K	$40M
Adage Capital Partners Gp, L.L.C. Hedge fund	+291K +77.1%	669K	$75.6M
State Street Corp Index funds	+242K +1.6%	15.2M	$1.7B
Lighthouse Investment Partners, LLC Hedge fund	+239K +1156.2%	260K	$29.3M
Marshall Wace, LLP Hedge fund	+237K New position	237K	$26.8M
Worldquant Millennium Advisors LLC Hedge fund	+211K +111.6%	400K	$45.2M
Assenagon Asset Management S.A.	+199K +3356.1%	205K	$23.2M
Natixis	+185K New position	185K	$20.9M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
T. Rowe Price Investment Management, Inc. Active manager	+4.6M +61.0%	12.1M	$1.4B
Point72 Asset Management, L.P. Hedge fund	+1.4M +207.5%	2.1M	$242M
Franklin Resources Inc Active manager	+417K +7.3%	6.1M	$689M
Millennium Management LLC Hedge fund	+369K +72.4%	878K	$99.3M
Adage Capital Partners Gp, L.L.C. Hedge fund	+291K +77.1%	669K	$75.6M
Lighthouse Investment Partners, LLC Hedge fund	+239K +1156.2%	260K	$29.3M
Marshall Wace, LLP Hedge fund	+237K New position	237K	$26.8M
Worldquant Millennium Advisors LLC Hedge fund	+211K +111.6%	400K	$45.2M
Renaissance Technologies LLC Hedge fund	+150K +52.0%	438K	$49.5M
Acadian Asset Management LLC Active manager	+149K +66.7%	373K	$42.2M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Qube Research & Technologies Ltd Hedge fund	−1.1M −51.9%	1.0M	$114M
Price T Rowe Associates Inc Active manager	−725K −3.4%	20.6M	$2.3B
AQR Capital Management LLC Hedge fund	−678K −41.8%	944K	$107M
Lazard Asset Management LLC Active manager	−610K −45.8%	722K	$81.7M
Caisse De Depot Et Placement Du Quebec	−441K −44.5%	551K	$62.2M
Amundi	−391K −42.5%	529K	$59.8M
Ameriprise Financial Inc	−337K −5.4%	5.9M	$671M
Bank Of Nova Scotia	−328K −91.9%	29K	$3.3M
FMR LLC Active manager	−230K −4.6%	4.8M	$541M
Reaves W H & Co Inc	−226K −21.1%	846K	$95.7M
Sei Investments Co	−211K −35.5%	383K	$43.3M
Chilton Capital Management LLC	−209K −40.4%	308K	$34.8M
Balyasny Asset Management L.P. Hedge fund	−202K −27.1%	543K	$61.3M
Korea Investment Corp	−189K −54.3%	159K	$18M
Freestone Grove Partners LP Hedge fund	−185K −93.2%	14K	$1.5M
Beck Bode, LLC	−181K Sold out	0	—
1832 Asset Management L.P.	−173K Sold out	0	—
UBS Group AG	−142K −13.9%	875K	$98.9M
Trexquant Investment LP Hedge fund	−141K Sold out	0	—
Man Group PLC Hedge fund	−133K −77.0%	40K	$4.5M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Qube Research & Technologies Ltd Hedge fund	−1.1M −51.9%	1.0M	$114M
Price T Rowe Associates Inc Active manager	−725K −3.4%	20.6M	$2.3B
AQR Capital Management LLC Hedge fund	−678K −41.8%	944K	$107M
Lazard Asset Management LLC Active manager	−610K −45.8%	722K	$81.7M
FMR LLC Active manager	−230K −4.6%	4.8M	$541M
Balyasny Asset Management L.P. Hedge fund	−202K −27.1%	543K	$61.3M
Freestone Grove Partners LP Hedge fund	−185K −93.2%	14K	$1.5M
Trexquant Investment LP Hedge fund	−141K Sold out	0	—
Man Group PLC Hedge fund	−133K −77.0%	40K	$4.5M
Yaupon Capital Management LP Hedge fund	−119K −29.5%	284K	$32.1M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Covalis Capital LLP	630K	$71.2M
Mizuho Markets Americas LLC	354K	$40M
Marshall Wace, LLPHedge fund	237K	$26.8M
Natixis	185K	$20.9M
Sagefield Capital LP	134K	$15.1M
Edgestream Partners, L.P.Hedge fund	119K	$13.5M
Bw Gestao De Investimentos Ltda.	89K	$10.1M
Dockside LLC	37K	$4.2M
Steelpeak Wealth, LLC	32K	$3.7M
Advance Capital Management, Inc.	28K	$3.2M

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Beck Bode, LLC	181K	$19.9M
1832 Asset Management L.P.	173K	$19.1M
Trexquant Investment LPHedge fund	141K	$15.5M
Greenland Capital Management LP	121K	$13.3M
Belpointe Asset Management LLC	55K	$6M
L & S Advisors Inc	53K	$5.8M
Jacobs Levy Equity Management, IncActive manager	48K	$5.3M
Y-Intercept (Hong Kong) Ltd	40K	$4.4M
Axq Capital, LP	22K	$2.4M
Dynamic Technology Lab Private Ltd	18K	$2M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 948
Ten largest holders: 54.2%
Index fund managers: 36.3%
Active managers and hedge funds: 27.8%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	33	34	6	6	+4.1M	+6.4%
Index fund managers	10	2	0	0	+2.7M	+3.1%
Other institutions	452	288	87	71	+4.5M	+5.8%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Ameren.

Only managers that filed a holdings report for both quarters are compared (1,009 here). 30 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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