Ameren Corp. 13F holders
Of the 44 funds followed here, 7 reported a position in Ameren Corp. in a 13F for the quarter ended 30 June 2026. The largest: Geode Capital Management, 7.8 million shares worth $880.8 million, 0.0% of its reported book. Sold out: Two Sigma Investments.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| Geode Capital Management | 7,820,813 | $880.8 million | 0.0% | +162,556 | added | 30 June 2026 | 13F |
| FMR LLC | 4,786,206 | $541.0 million | 0.0% | -229,988 | trimmed | 30 June 2026 | 13F |
| Point72 Asset Management | 2,139,630 | $241.9 million | 0.3% | +1,443,881 | added | 30 June 2026 | 13F |
| Citadel Advisors | 1,815,983 | $205.3 million | 0.0% | -37,194 | trimmed | 30 June 2026 | 13F |
| Millennium Management | 878,267 | $99.3 million | 0.0% | +368,767 | added | 30 June 2026 | 13F |
| Renaissance Technologies | 438,200 | $49.5 million | 0.1% | +150,000 | added | 30 June 2026 | 13F |
| Bridgewater Associates | 141,897 | $16.0 million | 0.1% | +89,833 | added | 30 June 2026 | 13F |
| Two Sigma Investments | 0 | $0 | 0.0% | -7,900 | exited | 30 June 2026 | 13F |
Value is what the fund reported. Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.
Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 15 May 2026 | 13G/A | T. Rowe Price Investment Management, Inc. and 1 other | 7.5 million | 2.7% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 29 April 2026 | 13G | Vanguard Capital Management and 1 other | 20.8 million | 7.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 28 April 2026 | 13G | Vanguard Portfolio Management and 1 other | 15.9 million | 5.7% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 26 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 17 February 2026 | 13G/A | T. Rowe Price Associates, Inc. and 1 other | 21.8 million | 8.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
| 21 January 2026 | 13G/A | BlackRock, Inc. and 1 other | 21.9 million | 8.1% | 31 December 2025 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder. Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.
Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 24 August 2026 | 2,700 | $106.13 | SEC |
| 19 August 2026 | 685 | $109.67 | SEC |
| 17 August 2026 | 85 | $109.74 | SEC |
| 4 August 2026 | 1,689 | $109.50 | SEC |
| 3 August 2026 | 3,683 | $109.61 | SEC |
| 31 July 2026 | 90 | $108.75 | SEC |
| 17 July 2026 | 2 | $113.10 | SEC |
| 16 July 2026 | 104 | $111.38 | SEC |
| 15 July 2026 | 329 | $112.95 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period. Largest in the window: 3,683 on 3 August 2026. A fail is an operational fact about settlement, not a position.
Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to AEE by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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