Is ATRC or TNDM the better stock?

"Better" depends on your goal, and these two are not alike. ATRC is the larger company by market cap ($2.33B vs $1.65B). TNDM has been more active on our scanner (133 vs 50 alerts in 30 days). ATRC has the smaller float (48.9M vs 68.4M), 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 ATRC and TNDM?

The differences that matter: they are similar in size ($2.33B vs $1.65B); they trade at very different share prices ($47.80 vs $22.25); ATRC sits at 99% of its 52-week range against 62% for TNDM; our scanner flagged ATRC 50 times in the last 30 days against 133 for TNDM. Everything above is measured from the latest completed session and SEC filings.

Which of ATRC and TNDM is more active right now?

Right now ATRC is at about 1.1x its normal volume and TNDM is at about 0.8x, so ATRC 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

ATRC vs TNDM

TheDesperateTrader.com· Side-by-side stock comparison

$ATRC vs $TNDM 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.

$ATRCAtriCure, Inc.

$TNDMTandem Diabetes Care, Inc.

$47.80

Price

$22.25

+0.4%

Day change

-5.2%

$2.33B

Market cap

$1.65B

—

P/E ratio

—

Dividend yield

—

48.9M

Free float

68.4M

99.9%

Institutional

99.9%

844K

Avg volume

2.0M

1.1x

Rel. volume

0.8x

99% of 52w

52-week range

62% of 52w

Scanner alerts 30d

133

SURGICAL & MEDICAL INSTRUMENTS & APPARATUS

Sector

SURGICAL & MEDICAL INSTRUMENTS & APPARATUS

ATRC vs TNDM: the quick read

·ATRC is the larger company by market cap ($2.33B vs $1.65B).
·TNDM has been more active on our scanner (133 vs 50 alerts in 30 days).
·ATRC has the smaller float (48.9M vs 68.4M), 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.
·Both stay busy on our scanner, 133 and 50 unusual-volume alerts over 30 days, so neither is the quiet one here.
·They are closely matched in size, within 41% of each other on market cap, which makes the rest of this table the interesting part.
·They are pulling apart today: ATRC is outperforming the other by roughly 5.6 percentage points on the session.

Objective differences only. Not investment advice.

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Frequently asked questions

Everything you need to know comparing ATRC and TNDM on TheDesperateTrader.

Is ATRC or TNDM the better stock?: "Better" depends on your goal, and these two are not alike. ATRC is the larger company by market cap ($2.33B vs $1.65B). TNDM has been more active on our scanner (133 vs 50 alerts in 30 days). ATRC has the smaller float (48.9M vs 68.4M), 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 ATRC and TNDM?: The differences that matter: they are similar in size ($2.33B vs $1.65B); they trade at very different share prices ($47.80 vs $22.25); ATRC sits at 99% of its 52-week range against 62% for TNDM; our scanner flagged ATRC 50 times in the last 30 days against 133 for TNDM. Everything above is measured from the latest completed session and SEC filings.
Which of ATRC and TNDM is more active right now?: Right now ATRC is at about 1.1x its normal volume and TNDM is at about 0.8x, so ATRC 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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