MDU, MDU Resources Group Inc

The allowed return, earned and credited

• Earned return on equity 10.9%
  Earning the allowed return
  Median over 10 readable years · latest FY2025: 6.9% (net income $190M ÷ equity $2.8B)
  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 1.2%
  Construction credit in earnings
  Equity allowance for funds used during construction $2M ÷ net income $190M
  What this means

  While a plant is under construction the commission lets the utility credit itself the allowed return on the capital tied up — a real, allowed profit that arrives as a bookkeeping entry now and as cash only after the plant enters rates. A large share means heavy reinvestment at the allowed return, the thing Berkshire's utility letters prize; it also means that much of this year's earnings has not yet been collected from anyone.

The invested base and the regulatory ledger

• Net utility plant —
  Not enough data
  What this means

  No undimensioned utility-plant figure is tagged in this filer's structured data.

• Regulatory assets & liabilities $477M / $621M
  Owes ratepayers
  Regulatory assets $477M · regulatory liabilities $621M · net $144M liability 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 · 3 of 6 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 Near
  Revenue ≥ $2B · $1.9B
  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 Miss
  Current ratio ≥ 2× · 0.84×
  What this means

  Current assets at least twice current liabilities, near-term bills covered without touching the business. Strict by design: many cash-rich modern firms run leaner and miss it, holding their cushion in longer-dated securities.

• Conservative debt Miss
  Debt ≤ working capital · $2.7B vs ($113M) WC
  What this means

  Graham's rule that borrowings not exceed net current assets. Capital-heavy and buyback-heavy firms routinely fail it, read it next to interest coverage, not alone.

• 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 · +44%
  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 $1.40/share (latest year $0.91), the averaged base the calculator's gate runs on, and book value is $13.18/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 9% → 14% (3-yr avg ends)
  What this means

  Through the cycle the operating margin widened — about 9% early to 14% lately, median 10% — pricing power intact or improving.

• Reinvestment, incremental ROIC returns capital
  What this means

  The capital base barely grew: this business returns cash through dividends and buybacks rather than reinvesting. Judge it on the cash returned, not on compounding.

• Worst year 2018 · 8.9% op. margin
  What this means

  Stayed profitable even in its hardest year, the resilience that survives recessions.

• Share count +0.5%/yr
  What this means

  Roughly flat share count, little dilution, little buyback.

• Dividend record paid
  What this means

  Paid a dividend in 10 of the years on record.

• How management talks about it Owner’s terms
  What this means

  The record and the register agree: capital is compounding and the filing reasons in an owner’s terms — per-share value, return on capital, the long term — not a promoter’s.