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ATRCHealth CareCommon Stock

AtriCure, Inc

Held by 9 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide 04963C209 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide

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In plain English: 9 of the investors we track own this stock. In the latest quarter, 5 of them bought more of it and 4 sold some or all of theirs (1 bought it for the first time). That tells you what they did last quarter — not what the stock will do next.

Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer

Managers holding
9
0 vs last quarter (like-for-like)
Total value held
$76.00M
Across tracked managers
Average weight ⓘOn average, how big this stock is in the portfolios that own it (its share of each manager's reported portfolio value).
0.0%
Of each manager's book
QoQ value ⓘLike-for-like: only managers that filed both quarters are compared, so a manager filing late (or confidentially) does not look like buying or selling. Includes price changes.
+$10.38M
+18.8% vs last quarter
Net shares bought
+408.9K
Est. net flow +$11.34M
Quarter activity
5 bought · 4 sold
1 new · 1 sold out

Tracked capital in this stock

Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).

Chart: Tracked capital in this stock

Aggregate buying and selling

Net share change reported each quarter

Chart: Aggregate buying and selling

Who owns ATRC?

Who added and who trimmed · Q2 2026

Estimated dollar change per manager (change in shares × this quarter's price). Click a bar to open the manager.

Chart: managers adding and trimming

Who owns ATRC? — Q2 2026

Holders ranked by position size, with each one's quarter-over-quarter change.

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

# Manager Fund Shares Value ↓ % of their portfolio QoQ Δ shares Δ shares % Est. Δ value ⓘChange in shares × this quarter's price
1 Steve Cohen Point72 Asset Management 604.38K $16.91M 0.0% New +604.4K — +$16.91M
2 Two Sigma Two Sigma Investments 525.79K $14.71M 0.0% Reduced -225.2K -30.0% -$6.30M
3 Norges Bank Norges Bank Investment Management 374.36K $10.47M 0.0% — — — —
4 Matthew McLennan First Eagle Investment Management 297.64K $8.33M 0.0% Added +35.5K +13.5% +$993.29K
5 Jim Simons Renaissance Technologies 234.10K $6.55M 0.0% Reduced -74.6K -24.2% -$2.09M
6 Wasatch Advisors Wasatch Advisors LP 233.60K $6.54M 0.0% Reduced -20.3K -8.0% -$568.75K
7 David Shaw D.E. Shaw & Co. 192.82K $5.40M 0.0% Added +136.2K +240.7% +$3.81M
8 Ken Griffin Citadel Advisors 177.34K $4.96M 0.0% Added +90.0K +103.0% +$2.52M
9 Ray Dalio Bridgewater Associates 76.31K $2.14M 0.0% Added +42.8K +127.7% +$1.20M

Sold out completely this quarter

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

Manager Fund Shares sold Value last quarter ↓
Israel Englander Millennium Management -179.9K $5.13M

Politician trades

Politician trades in ATRC

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

Politician Date Ticker Asset Type Reported range ⓘThe dollar range the politician reported. Exact amounts are not disclosed. Est. size ⓘOur estimate only: the midpoint of the reported range. Owner Account ⓘSubholding Of: the account the trade was in, as named on the report (e.g. an IRA or a brokerage account). The same stock bought on the same day in different accounts is a separate trade in each account. Filed ↓ Filing delay ⓘDays between the trade and the report. Over 45 days is late under the STOCK Act. Source
Gil Cisneros Politician Sep 29, 2026 ATRC AtriCure, Inc. - Common Stock (ATRC) [ST] Sale (partial) $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self 150 Main Street Trust > Bank of America Oct 12, 2026 13 days PTR ↗
Gil Cisneros Politician Aug 20, 2026 ATRC AtriCure, Inc. - Common Stock (ATRC) [ST] Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self 150 Main Street Trust > Bank of America Sep 10, 2026 21 days PTR ↗
Gil Cisneros Politician Mar 3, 2026 ATRC AtriCure, Inc. - Common Stock (ATRC) [ST] Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self 150 Main Street Trust > Bank of America Apr 7, 2026 35 days PTR ↗
Gil Cisneros Politician May 6, 2025 ATRC AtriCure, Inc. - Common Stock (ATRC) [ST] Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Self 150 Main Street Trust > Bank of America Jun 6, 2025 31 days PTR ↗
Josh Gottheimer Politician Jul 19, 2024 ATRC AtriCure, Inc. - Common Stock (ATRC) [ST] Purchase $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Joint Morgan Stanley - Select UMA Account # 1 Aug 15, 2024 27 days PTR ↗
Josh Gottheimer Politician Jun 18, 2024 ATRC AtriCure, Inc. - Common Stock (ATRC) [ST] Sale $1,001 - $15,000 Est. $8,000 (midpoint of reported range $1,001–$15,000) Joint Morgan Stanley - Select UMA Account # 1 Jul 9, 2024 21 days PTR ↗