Is PEN or GKOS the better stock?

"Better" depends on your goal, and these two are not alike. PEN is the larger company by market cap ($12.56B vs $9.53B). GKOS has been more active on our scanner (67 vs 2 alerts in 30 days). PEN has the smaller float (38.2M vs 56.8M), which tends to mean sharper, more volatile moves. Those are the measured differences, not a recommendation, and nothing here is investment advice.

What is the difference between PEN and GKOS?

The differences that matter: they are similar in size ($12.56B vs $9.53B); they trade at very different share prices ($319.28 vs $160.06); PEN sits at 69% of its 52-week range against 73% for GKOS; our scanner flagged PEN 2 times in the last 30 days against 67 for GKOS. Everything above is measured from the latest completed session and SEC filings.

Which of PEN and GKOS is more active right now?

Right now PEN is at about 0.9x its normal volume and GKOS is at about 1.1x, so GKOS is the one drawing unusual attention today. Relative volume (RVOL) compares a stock's volume to its own recent average, so it reads the same way for a megacap and a microcap and is the quickest way to tell which of two similar names is actually in play.

Is this comparison data live?

Prices and % changes are anchored to the latest completed session and split-adjusted, so a reverse split never shows as a fake move. Float is estimated from SEC filings and refreshed as new filings publish.

Compare

PEN vs GKOS

TheDesperateTrader.com· Side-by-side stock comparison

$PEN vs $GKOS head to head: price, market cap, valuation, dividend, free float, relative volume and how actively each trades. The bigger value in the size rows is bolded. Tap either ticker for its live chart, full ownership breakdown and real-time alerts.

$PENPenumbra, Inc.

$GKOSGlaukos Corporation

$319.28

Price

$160.07

+0.2%

Day change

-0.9%

$12.56B

Market cap

$9.53B

—

P/E ratio

—

Dividend yield

—

38.2M

Free float

56.8M

97.07%

Institutional

99.9%

321K

Avg volume

702K

0.9x

Rel. volume

1.1x

69% of 52w

52-week range

73% of 52w

Scanner alerts 30d

SURGICAL & MEDICAL INSTRUMENTS & APPARATUS

Sector

SURGICAL & MEDICAL INSTRUMENTS & APPARATUS

PEN vs GKOS: the quick read

·PEN is the larger company by market cap ($12.56B vs $9.53B).
·GKOS has been more active on our scanner (67 vs 2 alerts in 30 days).
·PEN has the smaller float (38.2M vs 56.8M), which tends to mean sharper, more volatile moves.
·Both are surgical & medical instruments & apparatus names, so this is a like-for-like comparison and sector news tends to move them together.
·GKOS draws far more of our scanner's attention, 67 unusual-volume alerts in 30 days against 2, so it is the more actively traded of the two by some distance.
·They are closely matched in size, within 32% of each other on market cap, which makes the rest of this table the interesting part.

Objective differences only. Not investment advice.

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Frequently asked questions

Everything you need to know comparing PEN and GKOS on TheDesperateTrader.

Is PEN or GKOS the better stock?: "Better" depends on your goal, and these two are not alike. PEN is the larger company by market cap ($12.56B vs $9.53B). GKOS has been more active on our scanner (67 vs 2 alerts in 30 days). PEN has the smaller float (38.2M vs 56.8M), which tends to mean sharper, more volatile moves. Those are the measured differences, not a recommendation, and nothing here is investment advice.
What is the difference between PEN and GKOS?: The differences that matter: they are similar in size ($12.56B vs $9.53B); they trade at very different share prices ($319.28 vs $160.06); PEN sits at 69% of its 52-week range against 73% for GKOS; our scanner flagged PEN 2 times in the last 30 days against 67 for GKOS. Everything above is measured from the latest completed session and SEC filings.
Which of PEN and GKOS is more active right now?: Right now PEN is at about 0.9x its normal volume and GKOS is at about 1.1x, so GKOS is the one drawing unusual attention today. Relative volume (RVOL) compares a stock's volume to its own recent average, so it reads the same way for a megacap and a microcap and is the quickest way to tell which of two similar names is actually in play.
Is this comparison data live?: Prices and % changes are anchored to the latest completed session and split-adjusted, so a reverse split never shows as a fake move. Float is estimated from SEC filings and refreshed as new filings publish.

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