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

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Signals for this name

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

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 62/100 · S&P 500 fund at 67, bullish alignedEight instruments scored on position, momentum, volume, volatility and fragility — the regime every name trades inside. Temperature lab → 2026-09-25
  • Factor regime Momentum leading — risk appetite buildingMomentum against low volatility (SPMO / SPLV): above its 50-day trend, 99th percentile of the window, +8.4% over 20 sessions. Factor regime → 2026-09-25
  • Sovereign pressure Index 0.61 · up 0.29 over 21 sessionsG7 long-end yields, 10s30s and the slope — the funding weather for every balance sheet on this site. Sovereign pressure → 2026-09-25
How it trades on rate days beta 0.38 to TLT · on the worst bond days it held up better than the market

How it trades on rate days

How PEN has moved when long-dated Treasury yields rise — measured against TLT, the 20+ year Treasury fund.

  • Beta to long bonds, 1 year 0.38 — shows only a loose link to bond moves for every 1% move in TLT (20+ year Treasuries), Penumbra Inc moved 0.38% on average · correlation 0.13 · higher than 38% of US names
  • Beta, last 3 months 0.08 less rate-sensitive lately than over the year
  • On the 10 worst bond days −0.03% on average against −0.74% for the S&P 500 the 10 sessions of the past year in which TLT fell most, i.e. long yields rose most
  • Latest of those days +0.09% TLT −1.29% that day 2026-09-24

Daily total returns from the adjusted price series; a TLT down day is a day long yields rose. Beta = the average move of the name for a 1% move in TLT. Past sensitivity, not a forecast. An investment diary, not a recommendation.

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 Closelooknet 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 Closelooknet scores where it exists.

Company snapshot — Penumbra Inc

PEN in five paragraphs: what it makes and sells, where it sits in the Closelooknet 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
Closelooknet 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 Closelooknet tracks it
It holds a seat in the Russell 1000 but carries no Rubin or Halo seat in our index; Closelooknet 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 Closelooknet’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.

FAQ · from the current data · as of 2026-09-26

Quick answers

What is Penumbra Inc (PEN)?

Penumbra Inc trades as PEN on the US exchange (United States) in the Closelooknet research universe, as of the registry build of 2026-09-26.

Is PEN in a Closelooknet index?

Not currently — Penumbra Inc is tracked in the Closelooknet research universe but is not a constituent of a Closelooknet functional index as of 2026-09-26.

Where does PEN trade against its moving averages?

Mixed moving-average stack: Trades -0.8% vs the 50-day and -2.3% vs the 200-day average, 12% below the 52-week high and +44.1% off the 52-week low; a death cross printed 29 sessions ago. Computed from daily closes. As of 2026-09-25 — a technical state from the nightly Closelooknet bake, not advice. The Technical tab carries the full row.

How does Penumbra Inc trade when bond yields rise?

Over the past year Penumbra Inc had a beta of 0.38 to TLT, the long-dated Treasury fund — it shows only a loose link to bond moves, higher than 38% of US names. On the 10 sessions in which long bonds fell most it moved −0.03% on average, against −0.74% for the S&P 500. The "How it trades on rate days" block on this page carries the lines.

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. Closelooknet 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; Closelooknet 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 Closelooknet structure read — an investment research diary view, not investment advice.

Related in the Closelooknet universe

then Medical Devices. Scored names rank on their Closelooknet 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.