BVN, Buenaventura Mining Company Inc.

Will it survive?

• Can it pay its interest? 6.8×
  Comfortable
  Operating income $446M ÷ interest expense $65M
  What this means

  Operating profit covers interest with the kind of margin Graham wanted for a defensive holding. Necessary, not sufficient, it says solvent, not cheap.

• How heavy is the debt, net of cash? +$478M
  Net cash, debt-free
  Cash $478M − debt $0
  What this means

  Cash and short-term investments exceed every dollar of debt by $478M, on net the company owes nothing, and can act from strength when others can't. 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? -51d
  Negative, funded by others
  DSO 81 + DIO 37 − DPO 169 days
  What this means

  Days cash is tied up between paying suppliers and collecting from customers. A negative cycle is a quiet moat: suppliers and customers fund the operation (Buffett's “float”), the company grows on other people's money.

Is it a good business?

• Return on invested capital —
  Not enough data
  Industry peers: median 2%
  What this means

  The filing data didn't include the inputs for this check.

• Owner-earnings margin 13%
  Positive this year, negative across the cycle
  latest $148M = operating cash $486M − maintenance capex $338M (positive this year), after an earlier loss stretch (10-yr median -4%)
  Industry peers: median 2%
  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 13% of revenue this year, a -4% median across 10 years.

• Are earnings backed by cash? 1.21×
  Cash-backed
  Cash from ops $486M ÷ net income $403M

  In the filing’s words The filing discloses a material weakness in its financial controls — the reported numbers here, and the record built on them, are only as reliable as the controls that produced them.

  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? 12%
  Reinvests most of it
  Dividends + buybacks $18M ÷ Owner Earnings $148M
  What this means

  Of $148M Owner Earnings, $18M (12%) went back to shareholders, $18M dividends, $0 buybacks. Returning most of it is the mark of a mature business with little left to reinvest at a high return; reinvesting most could mean a long runway, or empire-building. The split doesn't say which; the return earned on it (see ROIC) does.

• Investing or harvesting? 2.24×
  Expanding
  Capex $338M ÷ depreciation $151M
  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 · 0 of 4 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 · $1.2B
  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× · 1.75×
  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.

• Earnings stability Miss
  A profit every year (10-yr record) · 6 loss years
  What this means

  Graham wanted earnings in each of the past ten years, the stability a defensive owner leans on.

• Dividend record Miss
  Uninterrupted dividends · 7 of 10 yrs
  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 —
  Earnings +33% over the record · —
  What this means

  Earnings were negative early in the record, a growth rate isn't meaningful.

• 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 $1.35/share (latest year $1.59), the averaged base the calculator's gate runs on, and book value is $13.36/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, 2015–2024

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

• Profitable years 4 of 10
  What this means

  Lost money in 6 year(s), look at what happened there before trusting the average.

• Operating margin 2% → 12% (3-yr avg ends)
  What this means

  Through the cycle the operating margin widened — about 2% early to 12% lately, median −5% — pricing power intact or improving.

• Worst year 2015 · −14.7% op. margin
  What this means

  Operations went underwater in 2015, understand why before trusting the good years.

• Share count −0.0%/yr
  What this means

  Roughly flat share count, little dilution, little buyback.

• Dividend record rising
  What this means

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