Methodology: Medical-Device Operating Metrics
What these figures are
The Operating Metrics card on a medical-device company’s stock page shows the operating statistics the company reports in its own quarterly earnings release — the SEC Form 8-K exhibit filed alongside the results. These are the growth numbers device makers use to describe how fast the business is expanding and how each product franchise is performing. Oxford Ledge reads them directly from the as-filed exhibit and normalizes the labels so you can compare a company to itself over time.
They are an Oxford Ledge Signal: our reading of a public filing, not a re-audit of the company’s books and not a licensed data-vendor feed. Every value on the card carries its filing as-of date and links back to the SEC source.
The metrics, in plain English
| Metric | What it measures |
|---|---|
| Revenue growth | Year-over-year change in revenue. Reported both as-reported and, often, on a constant-currency or organic basis that strips out exchange rates and acquisitions — important for the many device makers with large overseas sales. |
| Segment revenue | Revenue by product franchise or business segment (cardiovascular, orthopedics, diabetes, and so on) — the mix behind the total. Shown on a company’s own page only, because each company defines its segments differently. |
Why revenue growth shows a basis
A global device company’s reported revenue growth is buffeted by exchange rates and reshaped by acquisitions, so companies report growth several ways: as-reported, constant-currency (stripping out exchange rates), and organic (also stripping out acquisitions). These are different numbers, and matching one company’s constant-currency figure against another’s as-reported figure would mislead. On the card we treat the as-reported figure as the headline and badge a constant-currency or organic variant; on the peer table, the revenue-growth column shows only the as-reported figure so you compare like with like.
Why segment revenue is shown only on a company’s own page
Segment revenue reveals which product franchises are driving a device maker, but each company draws its own segment boundaries, so a cross-company ranking would compare things that are not the same. We show segment revenue on a company’s own stock-page card, where the company-against-itself trend is meaningful, but it never appears as a column in the cross-company peer table.
How we read and normalize it
For each company we fetch the most recent quarterly earnings 8-K exhibit from SEC EDGAR, locate the operating table, and read each value verbatim from the reported column — never a prior-year or year-to-date column standing in for the quarter. We record each revenue-growth figure’s basis (reported, constant-currency, organic) alongside it.
The reading is checked against a hand-verified golden set for each company before any figure is allowed to publish; a value whose basis the extractor cannot confidently determine is withheld rather than shown.
What we deliberately do not do
- We do not re-audit. The figures are as reported by the issuer under regulatory convention. We normalize labels; we do not restate the company’s numbers.
- We do not mix growth bases or rank company-defined segments. The peer table compares only the as-reported basis.
- We do not show a value we are unsure of. Any reading our extractor flags is dropped from the display, never shown greyed or asterisked. Honest or absent.
- We do not treat these as forecasts, ratings, or advice. They are historical operating results a company disclosed, presented for study.
Freshness
The stock page is cached at the edge, so a brand-new filing’s figures can lag up to a day on the cached page. Each value is stamped with the filing it came from, so the as-of date always tells you exactly how current the number is.