MMM, 3M Company

Will it survive?

• Can it pay its interest? 4.9×
  Adequate
  Operating income $4.6B ÷ interest expense $946M
  What this means

  Comfortable in a normal year, but below the margin of safety Graham looked for. Worth checking how stable the coverage has been across a full cycle.

• How heavy is the debt, net of cash? $7.0B · 1.5× operating profit
  Modest net debt
  Cash $5.2B + ST investments $404M − debt $12.6B
  What this means

  Netting $5.6B of cash and short-term investments against $12.6B of debt leaves $7.0B owed, about 1.5× a year's operating profit (2.7× on the gross debt, before the cash). It also holds $30M in longer-dated marketable securities; counting those, it sits at $6.9B of net debt. Net debt is the leverage figure that matters: the cash is already set against the debt. Strategic or illiquid investments aren't counted here.

• How long is cash tied up? 75d
  Long (60+ days)
  DSO 52 + DIO 89 − DPO 66 days
  What this means

  Days cash is tied up between paying suppliers and collecting from customers. Lower is better; a long cycle means growth itself eats cash.

Is it a good business?

• Return on invested capital 22%
  High through the cycle
  10-yr median, range -64%–36%; 29% latest = NOPAT $3.5B ÷ invested capital $12.1B
  Industry peers: median 10%
  What this means

  The rate the business earns on the money tied up in it, Buffett's north star, because over time a stock tracks the ROIC beneath it. Above ~15% sustained hints at a moat; a return below the cost of capital (~8%) erodes value as a business grows rather than building it — the test Buffett weighs most. The headline is the median of the last 10 years (it ran 29% most recently), so one peak or trough year doesn't set the verdict. Asset-light businesses (R&D expensed, little capital) read artificially high, pair this with Owner Earnings.

• Owner-earnings margin 15%
  High through the cycle
  10-yr median margin, range 3%–21%; latest $1.4B = operating cash $2.3B − maintenance capex $910M
  Industry peers: median 12%
  What this means

  What an owner could take out without starving the business: operating cash less the maintenance capital it must spend to hold its position — Buffett's owner earnings. That's 6% of revenue this year, a 15% median across 10 years. Treating stock comp as the real expense it is (less $225M of SBC) leaves $1.2B.

• Are earnings backed by cash? 0.71×
  Mostly cash-backed
  Cash from ops $2.3B ÷ net income $3.3B
  What this means

  How much of reported profit showed up as operating cash. Above 1× is reassuring; well below suggests earnings lean on accruals. One year is noisy, growth and working-capital swings distort it, and this is operating cash, not free cash. Watch the multi-year trend.

How is the cash used?

• Where do the earnings go? 345%
  Returned more than it generated
  Dividends + buybacks $4.8B ÷ Owner Earnings $1.4B
  What this means

  The company returned more than it generated: against $1.4B of Owner Earnings, $4.8B (345%) went back to shareholders, $1.6B dividends, $3.3B buybacks — the excess came from the balance sheet or borrowing, not the year's operations. Net of $225M stock comp, the real buyback was about $3.0B. Sustained, that pattern draws down cash or adds debt; the net-debt line above shows where it stands.

• Investing or harvesting? 0.70×
  Harvesting
  Capex $910M ÷ depreciation $1.3B
  What this means

  Descriptive, not a grade. Above ~1× means investing faster than assets wear out (growth, or, sustained for years, today's earnings carrying less depreciation than tomorrow's will). Below means spending less than it's wearing out (efficiency, or a melting asset base). The ratio won't tell you which; the filings will.

Graham’s defensive tests · 2 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 Pass
  Revenue ≥ $2B · $24.9B
  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 Near
  Current ratio ≥ 2× · 1.71×
  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 · $12.6B vs $6.8B 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 Near
  A profit every year (10-yr record) · 1 loss year
  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 Miss
  Earnings +33% over the record · −97%
  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 $0.27/share (latest year $6.23), the averaged base the calculator's gate runs on, and book value is $9.02/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 9 of 10
  What this means

  Lost money in 1 year(s), look at what happened there before trusting the average.

• Return on capital ≥ 15% 9 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 23% → −2% (3-yr avg ends)
  What this means

  Through the cycle the operating margin slipped — about 23% early to −2% lately, median 20% — competition or costs are biting in.

• 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.

• Owner earnings growth −16%/yr
  What this means

  Owner earnings shrank about 16% a year over the record.

• Worst year 2023 · −43.4% op. margin
  What this means

  Operations went underwater in 2023, understand why before trusting the good years.

• Share count −1.5%/yr
  What this means

  The share count is shrinking, buybacks are quietly growing your slice of the business.

• Dividend record paid
  What this means

  Paid a dividend in 10 of the years on record.

• How management talks about it Promotional
  What this means

  The returns have faded, yet the filing reaches for a promoter’s vocabulary — world-class, best-in-class, disruptive — more than an owner’s. When the words sell harder than the results deliver, the gap is the thing to weigh.