When does Alliant Energy Corporation (LNT) report earnings? On Oct 29, 2026, after the close

None of its last 12 announcements carries a time on the filing, so there is no way to say which session they fell in. Each one comes from the 8-K with item 2.02 that Alliant Energy filed with the SEC, paired with the 10-Q or 10-K for that same quarter: 64 quarters since Aug 5, 2010, and every row links to its filing.

Next announced date: Oct 29, 2026, after the close. It comes from the company through the public Nasdaq calendar, not from the SEC: it is a scheduled date and companies do move it. Everything else on this page already happened, with its filing attached.

The latest, still without a report

• Jul 30, 2026, Thursday. see the 8-K

It is this company's most recent 8-K with item 2.02 and it does not yet have its 10-Q or 10-K behind it, so there is no way to say which quarter it belongs to: it does not enter the figures above or the table, and for the same reason it might not be an earnings announcement at all (some companies use this same item for production figures or monthly sales).

The last 20 quarters, one by one

"Lead": trading sessions between the announcement and the full quarterly report to the SEC (10-Q, or 10-K at fiscal year end). For Alliant Energy, a median of 1 session over the last 12 quarters.

The table shows the 20 most recent quarters. All 64 are in the CSV, with the same columns and one row per quarter.

Download all 64 LNT quarters as CSV → Free, no account.

How Alliant Energy shares moved on their latest earnings

Reported EPS beat the consensus estimate in 3 of the 4 quarters with an estimate.

Split-adjusted closes and EPS with its estimate, from Yahoo Finance. It already happened: it does not anticipate the next announcement.

Where each number comes from

From the 8-K with item 2.02 ("Results of Operations and Financial Condition") that Alliant Energy filed on EDGAR, the SEC's public database; only those with their 10-Q or 10-K behind them count, so other 8-Ks with the same item (production figures, monthly sales) stay out. No time is published for this company: its EDGAR acceptance stamp and the official header of its filings disagree, so there is no way to know whether the stamp is in New York time or UTC, and the two readings are four or five hours apart —enough to change session—. The dates are firm; the time and the session are deliberately left empty rather than filled in with a guess. In 1 of this company's 64 quarters the date comes from the EDGAR acceptance day rather than the 8-K cover box, and it is flagged with an asterisk in the table.

What this data does not know

• The exact time of the press release: the 8-K reaches EDGAR minutes or hours later, so any 8-K time is an upper bound. The session says which one the news landed in, not what minute it was said.
• Nothing before Aug 5, 2010: it is Alliant Energy's oldest quarter with announcement and report paired in the file.
• What will happen. The page's only future date, Oct 29, 2026, was announced by Alliant Energy on the Nasdaq calendar and can be moved.
• Alliant Energy's identity is its SEC CIK (0000352541), not its symbol: symbols get recycled and renamed.

When other Utilities companies report earnings

• AES
• EIX
• CEG
• NEE
• ES
• PCG
• ED
• PNW
• AEP
• D
• CNP
• EVRG
• NI
• ETR
• AEE
• AWK
• PEG
• EXC
• ATO
• PPL
• DUK
• WEC
• XEL
• FE
• SRE
• SO
• DTE
• NRG
• CMS
• VST
• outside the sector
• NCLH
• CARR

More on Alliant Energy

Alliant Energy is in the Utilities sector. On the model's multifactor score of Oct 21, 2026 it ranks 350 of 464, and 16 of the 31 companies in its sector that score. It is a quantitative model ranking, not a recommendation.

Alliant Energy (LNT) analysis page →

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Guide: 10-K, 10-Q and 8-K · all guides

Source: EDGAR, the SEC's public database (forms 8-K, 10-Q and 10-K). Data through Jul 30, 2026. This is a list of public facts and of calculations made on them, not financial advice or a recommendation to buy or sell.