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LNT, Alliant Energy

Multi-Utilities capital-intensive Regulated utility

Alliant Energy's primary focus is to provide regulated electric and natural gas service to approximately 1,010,000 electric and approximately 435,000 natural gas customers in the Midwest through its two public utility subsidiaries, IPL and WPL.

Alliant Energy operates as a regulated investor-owned public utility holding company, and its purpose-driven strategy is to serve its customers and build stronger communities.

IPL provides utility services to incorporated communities as directed by the IUC and utilizes non-exclusive franchises, which cover the use of public right-of-ways for utility facilities in incorporated communities for a maximum term of 25 years.

Latest annual: FY2025 10-K

LNT · Alliant Energy

The business

What it sells, where the money comes from, the kind of company it is.

Revenue · FY2025

$4.4B

+9.6% YoY · 5% 5-yr CAGR

Vital signs · TTM, with 5-yr average

Revenue $4.4B 5-yr avg $4.0B

Gross margin 86% 5-yr avg 86%

Operating margin 22.1% 5-yr avg 22.6%

ROIC 5% 5-yr avg 6%

Owner-earnings margin 7% 5-yr avg 3%

Free cash flow margin −24% 5-yr avg −22%

The business in brief

read the 10-K →

What this business is and what moves its needle, from its own SEC filings.

What it is: Revenue is led by Electric (85%) and Gas (12%), with 2 more segments behind.
Situation: Regulated utility. Returns are set by regulation on an approved rate base; the capital spending regulators approve becomes the growth, recovered through allowed rates.
What moves the needle: Gross margin has run about 86% and operating margin about 22% through the cycle, a wide spread between price and the cost of what it sells — whether that advantage is durable pricing power or a margin that can erode is the question the record is for. That margin has stayed fairly steady relative to where it runs (17%–23% over the years), so unit growth and cost discipline, not a moving line, are the lever. The cash cycle has run negative through the cycle (a median of −280 days): the operation is paid before it pays, so working capital releases cash as the business grows rather than tying it up. Read this kind of business on rate base and the allowed return. On its own account, the filing leans hardest on supplier & input dependence, set against the numbers in what the filing emphasizes, below.
Is it a good business?: Return on capital has rarely cleared the cost of capital (median 6%, above 15% in 0 of 10 years). Owner earnings, the cash-based check, have been thin too. Modest returns here are the design, not a verdict: a regulated utility's prices are set by commission, so the questions are the return the regulator allows, how fast the invested base it earns that return on is growing, and the health of the relationship with the commissions that decide both — all of which live in the 10-K, not the multiple.

Every line is arithmetic on the company's filings, shown in full in the sections below.

Where the money comes from

read the 10-K →

Electric is 85% of revenue, with Gas the other meaningful segment at 12%.

Revenue by reportable segment, FY2025

Electric85%$3.7B
Gas12%$525M
Other2%$89M
Other Utility1%$51M

From the segment footnote of the company's own 10-K. Shares are of total revenue; the profit bar shows each segment's share of segment operating profit, before unallocated corporate costs.

The record

Ten years of arithmetic, read across the cycle.

Most recent quarterly filing 10-Q filed Jul 31, 2026 Source at SEC EDGAR →

Revenue up 1.0% year over year; operating income down 17.0%

figures computed from the filing's XBRL

The record, 2016–2025

realized figures from each filing · older years to the left

2016’16	2017’17	2018’18	2019’19	2020’20	2021’21	2022’22	2023’23	2024’24	2025’25	TTMTTMJun 2026
											Income statement
$3.3B	$3.4B	$3.5B	$3.6B	$3.4B	$3.7B	$4.2B	$4.0B	$4.0B	$4.4B	$4.4B	RevenueRevenue
—	$2.9B	$3.0B	$3.2B	$3.0B	$3.1B	$3.6B	$3.4B	$3.4B	$3.7B	$3.8B	Gross profitGross prof.
—	86%	86%	87%	87%	85%	86%	86%	85%	86%	86%	Gross marginGross mgn
$554M	$671M	$694M	$778M	$740M	$795M	$928M	$943M	$886M	$1.0B	$980M	Operating incomeOp. inc.
16.7%	19.8%	19.6%	21.3%	21.7%	21.7%	22.1%	23.4%	22.3%	23.5%	22.1%	Operating marginOp. mgn
$443M	$533M	$570M	$636M	$567M	$600M	$708M	$707M	$576M	$661M	—	Pretax incomePretax
$382M	$468M	$522M	$567M	$624M	$674M	$686M	$703M	$690M	$810M	$817M	Net incomeNet inc.
13%	13%	8%	11%	—	—	3%	1%	—	—	—	Effective tax rateTax rate
											Cash flow & returns
$393M	$522M	$528M	$660M	$501M	$582M	$486M	$867M	$1.2B	$1.2B	$1.2B	Operating cash flowOp. cash
$412M	$462M	$507M	$567M	$615M	$657M	$671M	$676M	$772M	$846M	$868M	DepreciationDeprec.
($401M)	($408M)	($501M)	($474M)	($738M)	($749M)	($871M)	($512M)	($295M)	($487M)	($527M)	Working capital & otherWC & other
$1.2B	$1.5B	$1.6B	$1.6B	$1.4B	$1.2B	$1.5B	$1.7B	$2.1B	$2.3B	$2.2B	CapexCapex
36.0%	43.4%	46.2%	45.0%	40.0%	31.9%	35.3%	43.0%	51.5%	52.2%	50.0%	Capex / revenueCapex/rev
($19M)	$60M	$21M	$93M	($114M)	($75M)	($185M)	$191M	$395M	$323M	$290M	Owner earningsOwner earn.
−0.6%	1.8%	0.6%	2.5%	−3.3%	−2.0%	−4.4%	4.7%	9.9%	7.4%	6.5%	Owner earnings marginOE mgn
($804M)	($945M)	($1.1B)	($980M)	($865M)	($587M)	($998M)	($864M)	($885M)	($1.1B)	($1.1B)	Free cash flowFCF
−24.2%	−27.9%	−31.3%	−26.9%	−25.3%	−16.0%	−23.7%	−21.5%	−22.2%	−25.4%	−23.8%	Free cash flow marginFCF mgn
$267M	$288M	$312M	$337M	$377M	$403M	$428M	$456M	$492M	$521M	$534M	Dividends paidDiv. paid
($720M)	($1.0B)	($1.1B)	($1.3B)	($951M)	($728M)	($933M)	($1.4B)	($1.5B)	($1.9B)	—	Investing cash flowInv. cash
$329M	$533M	$531M	$619M	$488M	$130M	$431M	$573M	$398M	$1.2B	—	Financing cash flowFin. cash
$2M	$21M	($8M)	($8M)	$38M	($16M)	($16M)	$39M	$18M	$475M	—	Change in cashΔ cash
6%	7%	6%	6%	6%	6%	6%	6%	5%	5%	5%	ROICROIC
9%	11%	11%	11%	11%	11%	11%	10%	10%	11%	11%	Return on equityROE
3%	4%	5%	4%	4%	5%	4%	4%	3%	4%	4%	Retained to equityRetained/eq
											Balance sheet
$8M	$28M	$21M	$16M	$54M	$39M	$20M	$62M	$81M	$556M	$275M	Cash & investmentsCash+inv
$493M	$483M	$350M	$402M	$412M	$440M	$516M	$475M	$427M	$476M	$381M	ReceivablesReceiv.
$445M	$477M	$543M	$422M	$377M	$436M	$756M	$611M	$532M	$498M	$628M	Accounts payablePayables
$48M	$6M	($193M)	($20M)	$35M	$4M	($240M)	($136M)	($105M)	($22M)	($247M)	Operating working capitalOper. WC
$877M	$905M	$785M	$876M	$887M	$1.1B	$1.3B	$1.3B	$1.2B	$1.7B	$1.2B	Current assetsCur. assets
$1.2B	$2.1B	$1.6B	$2.1B	$1.3B	$2.1B	$2.4B	$2.3B	$2.7B	$2.1B	$2.6B	Current liabilitiesCur. liab.
0.8×	0.4×	0.5×	0.4×	0.7×	0.5×	0.5×	0.6×	0.4×	0.8×	0.5×	Current ratioCurr. ratio
$10.3B	$11.2B	$12.5B	$13.5B	$14.3B	$15.0B	$16.2B	$17.2B	$18.7B	$20.3B	—	Net PP&ENet PP&E
$1.9B	$1.7B	$1.7B	$1.8B	$2.0B	$1.9B	$2.0B	$2.3B	$2.3B	$2.3B	—	Regulatory assetsReg. assets
$681M	$1.5B	$1.5B	$1.4B	$1.3B	$1.3B	$1.3B	$1.1B	$1.0B	$1.2B	—	Regulatory liabilitiesReg. liab.
$13.4B	$14.2B	$15.4B	$16.7B	$17.7B	$18.6B	$20.2B	$21.2B	$22.7B	$25.0B	$25.3B	Total assetsAssets
$4.3B	$4.9B	$5.5B	$6.2B	$6.8B	$7.4B	$8.1B	$9.0B	$9.8B	$12.0B	$11.0B	Total debtDebt
$4.3B	$4.8B	$5.5B	$6.2B	$6.7B	$7.3B	$8.1B	$9.0B	$9.8B	$11.5B	$10.7B	Net debt / (cash)Net debt
$196M	$216M	$247M	$273M	$275M	$277M	$325M	$394M	$449M	$512M	$554M	Interest expenseInt. exp.
2.8×	3.1×	2.8×	2.8×	2.7×	2.9×	2.9×	2.4×	2.0×	2.0×	1.8×	Interest coverageInt. cov.
$4.1B	$4.2B	$4.6B	$5.2B	$5.7B	$6.0B	$6.3B	$6.8B	$7.0B	$7.3B	$7.5B	Shareholders’ equityEquity
											Per share
227M	230M	234M	239M	249M	251M	251M	253M	257M	258M	261M	Shares out (diluted)Shares
$14.62	$14.72	$15.13	$15.26	$13.74	$14.64	$16.74	$15.90	$15.50	$16.92	$16.98	Revenue / shareRev/sh
$1.68	$2.04	$2.23	$2.37	$2.51	$2.69	$2.73	$2.78	$2.69	$3.14	$3.13	EPS (diluted)EPS
$-0.08	$0.26	$0.09	$0.39	$-0.46	$-0.30	$-0.74	$0.75	$1.54	$1.25	$1.11	Owner earnings / shareOE/sh
$-3.54	$-4.12	$-4.73	$-4.10	$-3.48	$-2.34	$-3.97	$-3.41	$-3.45	$-4.30	$-4.05	Free cash flow / shareFCF/sh
$1.17	$1.26	$1.34	$1.41	$1.52	$1.61	$1.70	$1.80	$1.92	$2.02	$2.05	Dividends / shareDiv/sh
$5.27	$6.39	$6.99	$6.86	$5.49	$4.66	$5.91	$6.83	$7.99	$8.83	$8.49	Cap. spending / shareCapex/sh
$17.89	$18.21	$19.63	$21.78	$22.87	$23.89	$24.98	$26.75	$27.27	$28.45	$28.86	Book value / shareBVPS

Per-share growththe realized rate an owner's share compounded

	9-yr	5-yr
Revenue / share	+1.6%/yr	+4.3%/yr
EPS	+7.2%/yr	+4.6%/yr
Dividends / share	+6.2%/yr	+5.9%/yr
Capital spending / share	+5.9%/yr	+10.0%/yr
Book value / share	+5.3%/yr	+4.5%/yr

Where the cash went

ReinvestBuybacksDividendsAcquisitionsRetained

Each year's operating cash, by what management did with it: the mix, and how it drifts.

FY2016FY2025

Owner-earnings bridge

FY2021–FY2025cash-flow statement, SEC EDGAR →

Net income is the accountant's number; owner earnings is the cash an owner could take out. The walk between them, off the cash-flow statement, and whether the gap is widening or holding.

In fiscal 2025 the business earned $323M of owner earnings, the operating cash left after the $846M it takes just to hold its position. It put $1.4B more into growth; free cash flow, after that spending, was ($1.1B).

Reported net income$810M

Owner earnings$323M · 7% of revenue

	FY2025	FY2024	FY2023	FY2022	FY2021
Reported net income	$810M	$690M	$703M	$686M	$674M
Depreciation & amortizationnon-cash charge added back	+$846M	+$772M	+$676M	+$671M	+$657M
Working capital & othertiming of cash in and out, other non-cash items	−$487M	−$295M	−$512M	−$871M	−$749M
Cash from operations	$1.2B	$1.2B	$867M	$486M	$582M
Maintenance capital expenditurethe spending needed just to hold position and volume	−$846M	−$772M	−$676M	−$671M	−$657M
Owner earnings	$323M	$395M	$191M	($185M)	($75M)
Growth capital expenditurediscretionary; spent to get bigger, not to stand still	−$1.4B	−$1.3B	−$1.1B	−$813M	−$512M
Free cash flow	($1.1B)	($885M)	($864M)	($998M)	($587M)
Owner-earnings marginowner earnings ÷ revenue	7%	10%	5%	-4%	-2%

Owner earnings is the cash an owner could pull out without starving the business: operating cash less the maintenance capital it must spend to hold its position (here about $846M, roughly its depreciation, the rate its assets wear out). The other $1.4B of its capital spending is growth it chose, not upkeep it owed; charged only with the maintenance it must do, the business earns well more than the year's free cash flow shows.

Much of fiscal 2025's profit didn't arrive as operating cash; it sits in “working capital & other” above. That can be a real inventory or timing swing, or profit that doesn't run through operating cash at all: a heavy tax year, equity-method earnings, or investment income booked through investing. For a year like this, owner earnings understates the cash earned; the full cash-flow statement carries the rest.

A regulated utility reads differently here. What it spends above depreciation goes into rate base, where the commission lets it earn the allowed return and recover the capital, with interest, over decades — growth that is financed, not taken out of owners' pockets this year. So the truth sits between the bridge's two ends: owner earnings excuses the build-out entirely, free cash flow charges it entirely, and the scorecard's utility-plant figure shows how fast the base earning that return is compounding.

Maintenance capex is estimated as depreciation where a growing business invests above it; free cash flow is the figure the scorecard's free-cash margin reads.

III

Quality & stewardship

Returns, the balance sheet, capital allocation, and pay.

Owner’s Scorecard

FY2025 10-K · source on SEC EDGAR →

The allowed return, earned and credited

Earned return on equity 11.0%

Earning the allowed return

Median over 10 readable years · latest FY2025: 11.0% (net income $810M ÷ equity $7.3B)

What this means
A commission caps what a regulated utility may earn on shareholders' capital, so the question is not whether the return is high but whether the company actually earns what it is allowed — persistent under-earning means costs the regulator will not put in rates, and a return above the band usually means unregulated businesses in the mix. Read through the record, because a single year carries rate-case timing noise.
AFUDC in earnings —

Not enough data

What this means
The equity allowance for funds used during construction is not tagged in this filer's structured data — the construction credit, if any, lives in the 10-K's rate-matters note.

The invested base and the regulatory ledger

Net utility plant $19.7B

Growing ≈ 8.0%/yr

Utility plant net of depreciation, as filed · FY2016→FY2025: $9.8B → $19.7B, ≈ 8.0%/yr

What this means
The closest filed figure to the rate base — the invested capital the commission sets the allowed return on. Its growth rate is the utility's reinvestment runway: under regulation, earnings power compounds roughly as fast as the base the return is earned on, funded by capital the regulator lets the company recover with interest. Rate base itself is not tagged in any structured filing, so this is the proxy, labeled as what it is.
Regulatory assets & liabilities $2.3B / $1.2B

Owed recovery from ratepayers

Regulatory assets $2.3B · regulatory liabilities $1.2B · net $1.1B asset position, as filed

What this means
The ledger of the regulatory relationship: assets are costs the commission has agreed the utility may collect from ratepayers in future rates, liabilities are amounts it must give back. Both are promises whose worth depends entirely on the commissions that made them — which is why they are shown as filed and never netted into earnings adjustments here.

Graham’s defensive tests · 5 of 5 met

Graham’s numerical criteria for the defensive investor (The Intelligent Investor, ch. 14), run on the filings. A floor of safety, not a buy signal; many fine modern businesses fail his strictest liquidity rules by design.

Adequate size Pass

Revenue ≥ $2B · $4.4B

What this means
Big enough to weather a storm. Graham's 1972 floor was ~$100M of sales (≈ $700M today); we use a $2B revenue line as a conservative modern stand-in.
Strong liquidity —

Current ratio ≥ 2× (waived for utilities) · exempt

What this means
Graham exempted public utilities from this test: their working capital “takes care of itself” through the continuous bond-and-share financing of growth, so a thin current ratio is the industry's structure, not a warning. His substitute test — debt no more than twice book equity — is the next line.
Conservative debt Pass

Debt ≤ 2× equity (Graham's utility test) · $12.0B vs $7.3B equity

What this means
Graham's own substitution for public utilities: debt not exceeding twice the stock equity at book value, in place of the working-capital tests an industrial faces. A utility finances its plant with bonds by design; the question is whether the borrowing stays inside the equity behind it.
Earnings stability Pass

A profit every year (10-yr record) · no losses

What this means
Graham wanted earnings in each of the past ten years, the stability a defensive owner leans on.
Dividend record Pass

Uninterrupted dividends · paid every year (10)

What this means
An unbroken dividend was Graham's mark of durability. He wanted twenty years; the filings show about ten, and a single suspension breaks the streak. Non-payers, many fine modern compounders, fall outside his defensive net by design.
Earnings growth Pass

Earnings +33% over the record · +61%

What this means
At least a third more earnings than a decade ago, averaging three years at each end. Net income (not per-share), so stock splits don't distort it, buybacks and dilution show up in the share-count line instead.
Moderate price —

P/E ≤ 15 and P/E × P/B ≤ 22.5 · decided by the price

What this means
Graham's valuation gate, the wall he kept between a sound business and a sound investment. Three-year average earnings are $2.83/share (latest year $3.12), the averaged base the calculator's gate runs on, and book value is $28.29/share. Enter a price in “What the price implies” just below for the P/E, P/B, and whether it clears. But this is the rule Buffett outgrew: there's no hard P/E law, and a wonderful business can deserve a far richer multiple if the thesis holds, treat it as the bargain-hunter's floor, not a verdict on the price.

Durability & moat, 2016–2025

Whether the record’s returns held, and what the capital reinvested earned.

Profitable years 10 of 10

What this means
Never lost money over the record, the earnings stability Graham insisted on.
Return on capital ≥ 15% 0 of 10 yrs

What this means
A moat shows up as a high return on invested capital that holds year after year, not one good vintage.
Operating margin 19% → 23% (3-yr avg ends)

In the filing’s words The record and the words agree: the margin widened and the filing attributes the gain to its own pricing, not volume alone.

What this means
Through the cycle the operating margin widened — about 19% early to 23% lately, median 22% — pricing power intact or improving.
Reinvestment, incremental ROIC 5%

What this means
Reinvested capital came back at only a modest incremental return — near the cost of capital, where extra growth adds little per dollar. The record shows whether it is a soft stretch or a thinning moat.
Owner earnings growth +37%/yr

What this means
Owner earnings grew about 37% a year over the record.
Worst year 2016 · 16.7% op. margin

What this means
Stayed profitable even in its hardest year, the resilience that survives recessions.
Share count +1.4%/yr

What this means
The share count is rising, dilution works against you on a per-share basis.
Dividend record rising

What this means
Paid and raised the dividend across the record, the continuity Graham prized.

All figures as filed; the source filing is linked above.

Current Position

as of the latest quarter, Jun 30, 2026

Can the business pay what it owes this year, off the freshest balance sheet: the quality of the assets, the debt actually coming due, and what a low ratio means here.

Current assets$1.2B

Cash & short-term investments$275M
Receivables$381M
Other current assets$544M

Current liabilities$2.6B

Debt due within a year$374M
Accounts payable$628M
Other current liabilities$1.6B

Current ratio0.47×all current assets ÷ what's due · Graham looked for 2×

Quick ratio0.47×stricter: inventory excluded

Cash ratio0.11×strictest: cash alone against what's due

Working capital($1.4B)the cushion left after near-term bills

Its current ratio is below 1, which usually reads as strain; here it is likely structural strength. This business collects from customers before it pays suppliers (a negative cash-conversion cycle), so the balance sheet is funded by that float, the way Costco's and Amazon's are. The low ratio can be the edge, not the risk; the cash-conversion cycle and the debt due above say which.

Debt due this year vs. cash$374M due · $275M cash cash alone won't cover the maturities; it leans on refinancing or operating cash · both figures from the Jun 30, 2026 balance sheet

Revenue, latest quarter vs. a year ago+1.0%the freshest read on whether the business is still growing

Current ratio, recent quarters0.9× → 0.5×

Deeper floors

Tangible book value$7.5Bequity stripped of goodwill & intangibles

Debt incl. operating leases$11.0B$21M of it operating leases

From the company's latest filing.

How the cash was used, 2016–2025

Over the record, the business generated $6.9B of operating cash; how management split it reads as a reinvestor, most operating cash is plowed back into the business.

Reinvested$16.0B · 233%
Dividends$3.9B · 56%

Returned to owners$3.9B
562% of the owner earnings the business produced over the span, $3.9B as dividends and $0 as buybacks.
Source of funding−$13.0B
Reinvestment and shareholder returns ran $13.0B beyond the operating cash the business generated, so the gap was financed off the balance sheet: debt rose from $4.3B to $11.0B.
Net change in share count14.9%
The diluted count rose from 227M to 261M: issuance (stock pay, deals) outran any buybacks, so owners were diluted on net.
Dividend record$2.02/sh
Paid in 10 of the years on record, the per-share dividend growing about 6% a year. It was never cut over the span.
Return on what it retained13%
Of the earnings it kept rather than paid out ($2.2B over the span), annual owner earnings (first three years vs last three) grew $282M, so each retained $1 added about 0.13 of yearly owner earnings. Buffett's test, run on owner earnings instead of market value.

Buybacks are gross of stock issued to staff; the share-count line above is the net of that, the figure that decides whether owners gained. The average price paid blends a year of purchases (and any accelerated repurchase), so it is close, not exact. The record of where the cash went and on what terms.

Management, ownership & pay

read the proxy →

From the proxy: how much of the business the people running it own, and how they are paid, beside what the business earned for its owners in the same years.

Fiscal year	Chief executive	Pay, as filed	“Actually paid”	Owner earnings
2021	—	$10.4M	$10.2M	($75M)
2022	—	$7.3M	$5.4M	($185M)
2023	Mr. Larsen	$9.7M	$7.2M	$191M
2024	Ms. Barton	$7.0M	$8.5M	$395M
2025	—	$9.0M	$10.8M	$323M

Both pay figures are the company’s own, from the pay-versus-performance table its proxy statement files. “As filed” is the Summary Compensation Table total: salary, bonus, and equity awards at their value on the day of grant. “Actually paid” is the SEC’s prescribed recalculation, which re-marks those equity awards to what they became as they vested; it can swing far above or below the filed figure in either direction, and negative years occur. Owner earnings are the whole business's, from the record above, for the same fiscal years. A dash under the name means the filing tags the figure without naming the officer.

What an owner would ask, FY2025

read the 10-K →

Which reported numbers are a judgment call?
Management names Pension & retirement, Income taxes, Credit & receivables, Contingencies as critical estimates
each rests partly on management's judgment; the filing's note sets out the assumptionsverify →

The questions the record and the charts do not answer on their own; each carries the figure and the place to look.

Peers, Multi-Utilities

The same industry, side by side on owner economics. Each column names the period it is read over; the group median at the foot is the line to read each figure against.

Company	Revenuelatest FY, USD	ROEmedian over the record	Plant growthannualized over the record	Dividend / cashmedian over the record
WECWEC Energy Group Inc.	$9.8B	11%	—	33%
AEEAmeren Corporation	$8.8B	10%	—	24%
CMSCMS Energy Corporation	$8.5B	13%	—	24%
NINiSource Inc	$6.5B	8%	9.1%	27%
EVRGEvergy	$6.0B	8%	14.5%	29%
LNTAlliant Energy	$4.4B	11%	8.0%	57%
AVAAvista	$2.0B	7%	4.8%	30%
NWENorthWestern Energy	$1.6B	7%	6.0%	41%
Group median	—	9%	8.0%	30%

The price

What a price has to assume.

What the price implies

reverse-DCF

Type today's close and see the owner-earnings growth you'd have to believe to justify it, beside what Alliant Energy has delivered.

Alliant Energy’s latest year shows negative owner earnings, the mark of a build-out: total capital spending outruns the cash the business throws off today. So the tool opens on the steady-state base (maintenance capex in place of the build-out spend), the cash it would earn at rest; clear the toggle below to read the latest year exactly as reported.

Today’s price $

Through the cycle, Alliant Energy earns about $52M on its 1.2% median owner-earnings margin. This year’s 7.4% margin runs above that; the reported figure may flatter a peak you'd be paying on. Normalize, below, values the price on that through-cycle figure rather than the latest year. It comes pre-checked here for that reason, the same rule that already normalizes a trough; clear it to price the year as filed.

Base Normalize · through-cycle ($52M) Net of stock comp Steady-state · maintenance capex ($312M)

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The assumptions Required return 9% Years of high growth 10 Terminal growth 2.5%

9.0% = the 4.68% 10-year Treasury (Jul 30, 2026) + 4.32 points of equity premium. The rate you require is yours to set.

Enter a price above to run it.

Implied by the price—

Owner-earnings growth · ’16→’25+37%/yr

Owner-earnings yield—

P/E (3-yr earnings ’23–’25)—

P/B—

Graham’s price gate—

Graham capped the multiple at 15×; Buffett and Munger let that rule go: a wonderful business can deserve 50× if the thesis holds. The gate marks the bargain-hunter's floor.

Against a high-grade bond: Graham’s yardstick bond yield%

Prefilled with the 10-year Treasury (4.68%, as of Jul 30, 2026). Edit it for today’s exact figure, or a AAA corporate yield.

Graham measured a stock against the bond you could own instead, the heart of his margin of safety. Enter a price above to weigh the owner-earnings yield against this bond.

Free cash flow ($1.1B) on 259M shares outstanding, per the 10-Q cover, as of 2026-06-30; net debt $10.7B. The base opens on the through-cycle figure (the latest year sits above the record’s own median, and Graham’s averaging cuts both ways); clear Normalize to use the year as filed. Net of stock comp treats option pay as the expense it is. Capex ($2.2B) runs well above depreciation ($868M), so this is a build-out; Steady-state swaps total capex for maintenance (≈ depreciation), lifting the base to about $312M, the cash it would throw off if it stopped expanding. The dials set the multiple a growth belief justifies; the price, and every dollar on this page, is yours.

Weigh LNT against another business →

The owners of LNT: the meeting and the votes →

Cite: Owner Scorecard, "Alliant Energy (LNT), the owner's record," https://ownerscorecard.com/c/LNT, data as of 2026-07-18.

Manual order: ← LNN its page in the Manual LNTH →

Industry order: ← GNE the Multi-Utilities chapter MDU →