Penumbra, Inc. (PEN) Stock Price & How to Invest
Last updated July 2026
Short answer
You can invest in Penumbra, Inc. (PEN) by buying shares (or fractional shares) at any major broker, through an ETF that holds it (URNJ), or as one holding in a thematic basket.
PEN stock price
As of 2026-07-10, Penumbra, Inc. (PEN) last closed at $318.10, up 33.7% over the past year. Over the past 52 weeks it has traded between $225.54 and $359.40.
Prices are daily closing prices from Yahoo Finance and may be delayed. For the live quote, check your broker or Penumbra, Inc.'s investor relations page. Walnut is informational, not investment advice.
About Penumbra, Inc. (PEN)
We haven't generated a full guide for PEN yet. The chart above shows 1-year performance against SPY. For hand-curated coverage of the most-discussed names, see the stock guides index.
How to invest in Penumbra, Inc. (PEN)
There are three common ways to get PEN exposure. Buy shares (or fractional shares) directly at any major broker. Hold an ETF that includes it (URNJ), which spreads the position across many companies. Or build it into a focused thematic basket, so PEN sits alongside other stocks that express the same thesis.
Walnut takes the basket route. Describe a thesis where PEN fits (for example “AI infrastructure” or “dividend-growth large-caps”) and the AI proposes 5 to 6 constituents with target weights. You review the plan and fund it through your own broker when you're ready.
The bottom line on Penumbra, Inc. (PEN)
Most investors get PEN exposure through a broad ETF like URNJ, or hold it with intent inside a focused thematic basket.
Build a basket around PEN with Walnut
Use Penumbra, Inc. as one constituent in a thematic basket Walnut's AI helps you assemble. Describe a thesis you believe in, the AI proposes the holdings and weights, and you approve before any broker order.
FAQ
What is Penumbra, Inc. (PEN)'s ticker symbol?
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PEN. The full company name is Penumbra, Inc.. It trades during US market hours and is available at every major US brokerage.
How do I invest in PEN through Walnut?
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Walnut isn't a broker. It sits on top of your existing broker (Public, Alpaca, Schwab, Tradier, Webull for trading; Fidelity, Robinhood, and others for tracking). Connect a broker, then build a thematic basket that includes PEN as one constituent. Walnut's AI proposes the rest of the basket from a thesis you describe.
Is PEN a good stock to buy?
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Walnut is informational, not investment advice. Whether PEN fits your portfolio depends on your time horizon, what else you own, and your risk tolerance.
Walnut is informational, not investment advice. Financial figures on this page are approximations; always verify current numbers with Penumbra, Inc.'s investor relations page or your broker before making investment decisions.