Duke Energy (DUK): financials, SEC filings and peers

Duke Energy (DUK) is an electric utilities company in the Utilities sector of the S&P 500, headquartered in Charlotte, North Carolina.

It was founded in 1904 and joined the S&P 500 on June 30, 1976.

Its fiscal year ends in December, and its shares trade on the NYSE.

In its SEC filings it is classified as “Electric & Other Services Combined”.

Duke Energy at a glance

Revenue (12 months): $32.5B
Revenue growth: +5.8%
Operating margin: 27.7%
Net income (12 months): $5.1B
Free cash flow (12 months): −$3.3B
Cash: $2.1B
Debt: $89.6B
Diluted EPS (12 months): $6.53

Twelve months to March 31, 2026, from the 10-Q filed May 5, 2026.

Latest twelve months

Over the twelve months to March 31, 2026, Duke Energy reported revenue of $32.5 billion, about the same as a year earlier (+5.8%).

Its operating margin was 27.7%: for every $100 of sales, about $28 was left as operating profit.

Net income was $5.1 billion (15.8% of revenue), 7.8% higher than a year earlier.

Operating cash flow was $11.7 billion and capital spending $15.0 billion, leaving free cash flow of −$3.3 billion (-10.1% of revenue). Capital spending equal to 46% of revenue is high; the company is investing heavily.

At the end of the period it held $2.1 billion in cash and $89.6 billion in debt, a net debt position of $87.4 billion.

Five-year trend

Revenue went from $23.3 billion in fiscal 2020 to $31.7 billion in fiscal 2025, about 6.4% a year.
Operating margin widened from 19.7% to 27.2% over the same years.
Free cash flow was negative in 5 of the last 6 fiscal years.

Fiscal year	2021	2022	2023	2024	2025
Revenue	$24.5B	$28.7B	$28.7B	$30.1B	$31.7B
Revenue growth	5.3%	17.1%	-0.0%	4.8%	5.6%
Operating margin	22.5%	21.0%	24.7%	26.4%	27.2%
Net income	$3.9B	$2.5B	$2.8B	$4.5B	$5.0B
Free cash flow	−$1.4B	−$5.4B	−$2.7B	$48M	−$1.7B
Diluted EPS	$4.94	$3.17	$3.54	$5.71	$6.31

Fiscal years as reported in Duke Energy’s 10-K filings. Free cash flow is operating cash flow minus capital spending.

Recent SEC filings

8-K filed September 25, 2026 — Executive or director change; Other event
8-K filed August 13, 2026 — Other event
8-K filed August 5, 2026 — Regulation FD disclosure
10-Q filed August 4, 2026 — quarterly report
8-K filed August 4, 2026 — Earnings results
8-K filed July 17, 2026 — Regulation FD disclosure
8-K filed July 6, 2026 — Regulation FD disclosure
8-K filed May 13, 2026 — Shareholder vote results

All Duke Energy filings on SEC EDGAR

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Questions about Duke Energy

Is Duke Energy's revenue growing?

Yes. Revenue for the twelve months to March 31, 2026 was $32.5 billion, up 5.8% from a year earlier, according to its SEC filings.

Is Duke Energy profitable?

Yes. It earned $5.1 billion in net income over the twelve months to March 31, 2026, a net margin of 15.8%.

Does Duke Energy have more cash or more debt?

At March 31, 2026 it had $2.1 billion in cash and $89.6 billion in debt, so more debt than cash.

When did Duke Energy last file financial results?

Its latest quarterly report (10-Q) was filed with the SEC on August 4, 2026.

Which companies are similar to Duke Energy?

In the S&P 500, Duke Energy is grouped in Electric Utilities within the Utilities sector. American Electric Power (AEP), Constellation Energy (CEG), Edison International (EIX), Eversource Energy (ES), Entergy (ETR) are in the same group.

Understand the numbers

Source: Duke Energy’s filings with the U.S. Securities and Exchange Commission (EDGAR), retrieved September 27, 2026. Figures are as reported by the company and may be restated. This page is for information only and is not financial advice.