ALLIANT ENERGY CORP

LNT Utilities · Utilities

Latest period 2026-06-30 · 37 filings on record

Quarterly TTM Annual

8Q 3Y 5Y 10Y MAX

TTM 24-09 → TTM 26-06 8 TTM POINTS

SHOWING Trailing twelve months — each point sums the four quarters ending there.

Ranked against Utilities · 35 peers

Each grade is a single reported quarter's assessment, never an average — a card shows the grade at the newest quarter in view, so it follows the period and range controls above. Latest scored quarter: 2026-06-30.

Growth 29th pct

▼−16 over range · as of 2026-06-30

Revenue +1.0% YoY, earnings -2.3% YoY · sector avg 73

Quality 66th pct

▼−1 over range · as of 2026-06-30

17.5% net margin, 11% return on equity, -7% free-cash-flow margin, profitable in 8 of last 8 quarters · sector avg 51

Safety 13th pct

▼−28 over range · as of 2026-06-30

Net debt 6.3x EBITDA, 1x interest coverage, 0.5x current ratio · sector avg 65

OVERVIEWvs prior TTM Δ

Trailing twelve months · ending 2026-06-30 · green = improving · click a row to chart it

Revenue $4.4B +0.2% Gross margin 85.8% −0.1pp Operating margin 22.1% −0.9pp CHARTED Net margin 18.5% −0.1pp Net income $817.0M −0.5%

Debt / equity 1.56 +1.0%

EPS (diluted) — — EBITDA $1.8B −1.4%

Filings

TTM 24-09 → TTM 26-06 · following the period bar 11 match

ALL 10-K 10-Q Q1 Q2 Q3 FY SORT NEWEST ↓

Filings by fiscal year and period
Year	Q1	Q2	Q3	FY
2026	10-Q Q1 2026	no filing	no filing	no filing
2025	10-Q Q1 2025	10-Q Q2 2025	10-Q Q3 2025	10-K FY 2025
2024	10-Q Q1 2024	10-Q Q2 2024	10-Q Q3 2024	10-K FY 2024
2023	no filing	no filing	no filing	10-K FY 2023

10-Q — 2026-07-31 Pro → 10-Q Q1 2026 2026-05-01 Pro → 10-K FY 2025 2026-02-20 Pro → 10-Q Q3 2025 2025-11-07 Pro → 10-Q Q2 2025 2025-08-08 Pro → 10-Q Q1 2025 2025-05-09 Pro →

All 11 filings

10-K FY 2024 2025-02-21 Pro → 10-Q Q3 2024 2024-11-01 Pro → 10-Q Q2 2024 2024-08-02 Pro → 10-Q Q1 2024 2024-05-03 Pro → 10-K FY 2023 2024-02-16 Pro →

Filing-level fact detail is a Pro feature. The grades and figures above are free. See Pro plans

Trends

Trailing twelve months, rolling one quarter at a time

Revenue

Latest$4.4B vs prior TTM+0.2% Periods8

Revenue by period
Period	Period end	Revenue
TTM 24-09	2024-09-30	$4.0B
TTM 24-12	2024-12-31	$4.0B
TTM 25-03	2025-03-31	$4.1B
TTM 25-06	2025-06-30	$4.1B
TTM 25-09	2025-09-30	$4.3B
TTM 25-12	2025-12-31	$4.4B
TTM 26-03	2026-03-31	$4.4B
TTM 26-06	2026-06-30	$4.4B

Net income

Latest$817.0M vs prior TTM−0.5% Periods8

Net income by period
Period	Period end	Net income
TTM 24-09	2024-09-30	$661.0M
TTM 24-12	2024-12-31	$690.0M
TTM 25-03	2025-03-31	$745.0M
TTM 25-06	2025-06-30	$832.0M
TTM 25-09	2025-09-30	$818.0M
TTM 25-12	2025-12-31	$810.0M
TTM 26-03	2026-03-31	$821.0M
TTM 26-06	2026-06-30	$817.0M

Operating income

Latest$979.0M vs prior TTM−3.7% Periods8

Operating income by period
Period	Period end	Operating income
TTM 24-09	2024-09-30	$847.0M
TTM 24-12	2024-12-31	$886.0M
TTM 25-03	2025-03-31	$921.0M
TTM 25-06	2025-06-30	$1.0B
TTM 25-09	2025-09-30	$1.1B
TTM 25-12	2025-12-31	$1.0B
TTM 26-03	2026-03-31	$1.0B
TTM 26-06	2026-06-30	$979.0M

Operating margin

Latest22.1% vs prior TTM−0.9pp Periods8

Operating margin by period
Period	Period end	Operating margin
TTM 24-09	2024-09-30	21.4%
TTM 24-12	2024-12-31	22.3%
TTM 25-03	2025-03-31	22.6%
TTM 25-06	2025-06-30	24.5%
TTM 25-09	2025-09-30	24.6%
TTM 25-12	2025-12-31	23.5%
TTM 26-03	2026-03-31	23.0%
TTM 26-06	2026-06-30	22.1%

ZOOM

TTM 10-12 TTM 26-06

Grade history

Point-in-time: each period shows the grade of the quarter it ends at — grades are never summed or averaged across a window.

Growth 29 Quality 66 Safety 13

Hover to read every grade at a period · shared with the trends chart · axis fixed 0–100

Grade history by period
Period	Period end	Growth	Quality	Safety
TTM 24-09	2024-09-30	44	67	40
TTM 24-12	2024-12-31	50	63	20
TTM 25-03	2025-03-31	56	62	13
TTM 25-06	2025-06-30	61	62	25
TTM 25-09	2025-09-30	43	62	41
TTM 25-12	2025-12-31	34	61	31
TTM 26-03	2026-03-31	23	67	27
TTM 26-06	2026-06-30	29	66	13