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Penumbra Inc (PEN) — chart, structure and Closelook read

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Company snapshot — Penumbra Inc

PEN in five paragraphs: what it makes and sells, where it sits in the Closelook stack, who it is priced against, why we track it, what we watch. Research diary, not advice.

What it does
Penumbra makes medical devices used to clear blood clots and treat vascular disease, mainly aspiration systems that remove thrombus from arteries and veins. It also sells catheters, guide wires and embolization coils that block or seal off abnormal vessels, plus neurosurgical tools for removing fluid from the brain. Hospitals and interventional physicians buy its systems for use in stroke, peripheral vascular and neurovascular procedures. The company is based in Alameda, California, and sells across the United States and internationally.
Where it sits in the stack
Penumbra sits in the Medical Devices industry within Healthcare, outside any layer of our AI build-out index; it is not a constituent of our Rubin index.
Who it is priced against
Closelook has not built a peer group for this name; the market often names Stryker, which also sells thrombectomy and neurovascular devices, as a comparable.
Why Closelook tracks it
It holds a seat in the Russell 1000 but carries no Rubin or Halo seat in our index; Closelook has not yet built a score for it, and no edition currently quotes it.
What the diary watches
The diary watches whether hospital order volumes for its thrombectomy and embolization systems keep pace with new product launches across its vascular and neuro lines.

Penumbra Inc (PEN) trades on US exchanges.

Written from the company’s public profile and Closelook’s own readings, 2026-09-17. Descriptive, refreshed with the registry; corrections welcome via the imprint. closelook.net is an investment research diary — market structure, index membership and scores are our own readings, not investment advice. Related: index compare · sector dispersion · scanner.

Signals for this name

Every Closelook reading that exists for PEN, from the same nightly bakes the boards use. Research diary readings, not advice.

Who it is priced against Medical Devices · United States · 8 names with week and year-to-date

Peer group

Medical Devices · United States

This name carries no Closelook score, so its cohort ranks on trend state — distance to the 50- and 200-day averages — never on a score it does not have.

Compared against PEN on the nightly bakes; the Peers tab ranks the cohort on the Closelook scores where it exists.

Weather around the name 3 macro readings: Money Temperature, Factor regime, Sovereign pressure

The weather around this name

Macro readings that apply by membership — the regime, the factor tape, the sector cell, the funding backdrop.

  • Money Temperature Composite 55/100 · S&P 500 fund at 58, above its 50- and 200-day averagesEight instruments scored on position, momentum, volume, volatility and fragility — the regime every name trades inside. Temperature lab → 2026-09-17
  • Factor regime Momentum leading — risk appetite buildingMomentum against low volatility (SPMO / SPLV): above its 50-day trend, 94th percentile of the window, +2.7% over 20 sessions. Factor regime → 2026-09-17
  • Sovereign pressure Index 0.00 · down 0.41 over 21 sessionsG7 long-end yields, 10s30s and the slope — the funding weather for every balance sheet on this site. Sovereign pressure → 2026-09-17

FAQ · from the current data · as of 2026-09-18

Quick answers

What is Penumbra Inc (PEN)?

Penumbra Inc trades as PEN on the US exchange (United States) in the Closelook research universe, as of the registry build of 2026-09-18.

Is PEN in a Closelook index?

Not currently — Penumbra Inc is tracked in the Closelook research universe but is not a constituent of a Closelook functional index as of 2026-09-18.

Where does PEN trade against its moving averages?

Mixed moving-average stack: Trades -0.8% vs the 50-day and -2.1% vs the 200-day average, 12% below the 52-week high and +44.1% off the 52-week low; a death cross printed 23 sessions ago. Computed from daily closes. As of 2026-09-17 — a technical state from the nightly Closelook bake, not advice. The Technical tab carries the full row.

What does Penumbra Inc do?

Penumbra makes medical devices used to clear blood clots and treat vascular disease, mainly aspiration systems that remove thrombus from arteries and veins. It also sells catheters, guide wires and embolization coils that block or seal off abnormal vessels, plus neurosurgical tools for removing fluid from the brain. Hospitals and interventional physicians buy its systems for use in stroke, peripheral vascular and neurovascular procedures. Closelook has not built a peer group for this name; the market often names Stryker, which also sells thrombectomy and neurovascular devices, as a comparable.

Where does Penumbra Inc sit in the AI build-out?

Penumbra sits in the Medical Devices industry within Healthcare, outside any layer of our AI build-out index; it is not a constituent of our Rubin index. It holds a seat in the Russell 1000 but carries no Rubin or Halo seat in our index; Closelook has not yet built a score for it, and no edition currently quotes it.

What does this page show?

A live price chart with SMA overlays and drawing tools for PEN, performance metrics, index-membership context and the Closelook structure read — an investment research diary view, not investment advice.

Related in the Closelook universe

then Medical Devices. Scored names rank on their Closelook score; names without one rank on trend state — above or below their 50- and 200-day averages — never on a score they do not carry.