아트리큐어(주)
US ˙ NasdaqGM ˙ US04963C2098

SecurityATRC / AtriCure, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership719,162 shares
Latest Disclosed Value $ 20,517,698
Morgan Stanley reports 107.78% increase in ownership of ATRC / AtriCure, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 719,162 shares of AtriCure, Inc. (US:ATRC) valued at $20,517,692 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 346,116 shares of AtriCure, Inc.. This represents a change in shares of 107.78% during the quarter. The current value of the position is $19,489,290 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ATRICURE COM 04963C209 719,162 373,046 107.78 20,518 49.85 0.0012
2026-05-27 2025-12-31 13F/A-1 ATRICURE COM 04963C209 346,116 157,300 83.31 13,692 105.74 0.0008
2026-02-13 2025-12-31 13F ATRICURE COM 04963C209 346,116 157,300 13,692 0.0008
2026-05-27 2025-09-30 13F/A-1 ATRICURE COM 04963C209 188,816 -63,274 -25.10 6,656 -19.44 0.0004
2025-11-14 2025-09-30 13F ATRICURE COM 04963C209 188,816 -63,274 6,656 0.0004
2025-08-15 2025-06-30 13F ATRICURE COM 04963C209 252,090 -134,854 -34.85 8,261 -33.82 0.0005
2025-05-15 2025-03-31 13F ATRICURE COM 04963C209 386,944 3,581 0.93 12,483 6.55 0.0009
2025-05-15 2024-12-31 13F/A-1 ATRICURE COM 04963C209 383,363 -446 -0.12 11,716 8.86 0.0008
2025-02-14 2024-12-31 13F ATRICURE COM 04963C209 383,363 -446 11,716 0.0008
2025-05-14 2024-09-30 13F/A-2 ATRICURE COM 04963C209 383,809 -7,644 -1.95 10,762 20.74 0.0008
2025-02-14 2024-09-30 13F/A-1 ATRICURE COM 04963C209 383,809 -7,644 10,762 0.0008
2024-11-14 2024-09-30 13F ATRICURE COM 04963C209 383,809 -7,644 10,762 0.0001
2025-05-14 2024-06-30 13F/A-2 ATRICURE COM 04963C209 391,453 -578,440 -59.64 8,913 -69.79 0.0007
2024-10-17 2024-06-30 13F/A-1 ATRICURE COM 04963C209 391,453 -578,440 8,913 0.0007
2024-08-14 2024-06-30 13F ATRICURE COM 04963C209 391,453 -578,440 8,913 0.0007
2024-10-17 2024-03-31 13F/A-2 ATRICURE COM 04963C209 969,893 475,115 96.03 29,504 67.09 0.0024
2024-08-16 2024-03-31 13F/A-1 ATRICURE COM 04963C209 969,893 475,115 29,504 0.0003
2024-05-15 2024-03-31 13F ATRICURE COM 04963C209 969,893 475,115 29,504 0.0024
2024-08-16 2023-12-31 13F/A-1 ATRICURE COM 04963C209 494,778 242,079 95.80 17,659 59.54 0.0016
2024-02-13 2023-12-31 13F ATRICURE COM 04963C209 494,778 242,079 17,659 0.0016
2023-11-15 2023-09-30 13F ATRICURE COM 04963C209 252,699 8,755 3.59 11,068 -8.08 0.0011
2023-08-14 2023-06-30 13F ATRICURE COM 04963C209 243,944 -37,144 -13.21 12,041 3.35 0.0012
2023-05-15 2023-03-31 13F ATRICURE COM 04963C209 281,088 63,000 28.89 11,651 20.39 0.0012
2023-02-14 2022-12-31 13F ATRICURE COM 04963C209 218,088 71,570 48.85 9,679 68.96 0.0011
2022-11-14 2022-09-30 13F ATRICURE COM 04963C209 146,518 17,147 13.25 5,728 8.34 0.0008
2022-10-27 2022-06-30 13F/A-1 ATRICURE COM 04963C209 129,371 78,054 152.10 5,287 56.84 0.0007
2022-08-15 2022-06-30 13F ATRICURE COM 04963C209 129,371 78,054 5,287 0.0001
2022-10-27 2022-03-31 13F/A-1 ATRICURE COM 04963C209 51,317 1,867 3.78 3,371 -1.95 0.0005
2022-05-13 2022-03-31 13F ATRICURE COM 04963C209 51,317 1,867 3,371 0.0005
2022-02-14 2021-12-31 13F ATRICURE COM 04963C209 49,450 -84 -0.17 3,438 -0.20 0.0004
2021-11-15 2021-09-30 13F ATRICURE COM 04963C209 49,534 -89,412 -64.35 3,445 -68.74 0.0005
2021-08-23 2021-06-30 13F/A-1 ATRICURE COM 04963C209 138,946 76,206 121.46 11,022 168.18 0.0015
2021-08-16 2021-06-30 13F ATRICURE COM 04963C209 138,946 76,206 11,022 0.0003
2021-05-17 2021-03-31 13F ATRICURE COM 04963C209 62,740 8,150 14.93 4,110 35.24 0.0006
2021-02-16 2020-12-31 13F ATRICURE COM 04963C209 54,590 16,399 42.94 3,039 99.41 0.0005
2020-11-13 2020-09-30 13F ATRICURE COM 04963C209 38,191 2,341 6.53 1,524 -5.40 0.0003
2020-08-14 2020-06-30 13F ATRICURE COM 04963C209 35,850 -57,012 -61.39 1,611 -48.35 0.0004
2020-05-26 2020-03-31 13F/A-1 ATRICURE COM 04963C209 92,862 -35,284 -27.53 3,119 -25.13 0.0008
2020-05-15 2020-03-31 13F ATRICURE COM 04963C209 92,862 -35,284 3,119 239.6042
2020-02-14 2019-12-31 13F ATRICURE COM 04963C209 128,146 64,489 101.31 4,166 162.51 0.0010
2019-11-14 2019-09-30 13F ATRICURE COM 04963C209 63,657 -66,990 -51.28 1,587 -59.29 0.0004
2019-08-14 2019-06-30 13F ATRICURE COM 04963C209 130,647 111,276 574.45 3,898 651.06 0.0010
2019-05-15 2019-03-31 13F ATRICURE COM 04963C209 19,371 -59,895 -75.56 519 -78.60 0.0001
2019-02-14 2018-12-31 13F ATRICURE COM 04963C209 79,266 213 0.27 2,425 -12.42 0.0007
2019-04-23 2018-09-30 13F/A-2 ATRICURE COM 04963C209 79,053 -81,275 -50.69 2,769 -36.14 0.0007
2018-11-20 2018-09-30 13F/A-1 ATRICURE COM 04963C209 79,053 0 2,769 0.0007
2018-11-14 2018-09-30 13F ATRICURE COM 04963C209 79,053 -81,275 2,769
2019-04-23 2018-06-30 13F/A-1 ATRICURE COM 04963C209 160,328 75,358 88.69 4,336 148.62 0.0012
2018-08-14 2018-06-30 13F ATRICURE COM 04963C209 160,328 75,358 4,336
2019-04-23 2018-03-31 13F/A-1 ATRICURE COM 04963C209 84,970 -60,608 -41.63 1,744 -34.34 0.0005
2018-05-14 2018-03-31 13F ATRICURE COM 04963C209 84,970 -60,608 1,744
2019-04-23 2017-12-31 13F/A-1 ATRICURE COM 04963C209 145,578 49,133 50.94 2,656 23.08 0.0007
2018-02-14 2017-12-31 13F ATRICURE COM 04963C209 145,578 49,133 2,656
2017-11-14 2017-09-30 13F ATRICURE COM 04963C209 96,445 39,096 68.17 2,158 55.14 0.0006
2017-08-11 2017-06-30 13F ATRICURE COM 04963C209 57,349 -11,894 -17.18 1,391 4.90 0.0004
2017-05-22 2017-03-31 13F/A-1 ATRICURE COM 04963C209 69,243 -41,151 -37.28 1,326 -38.64 0.0004
2017-05-12 2017-03-31 13F ATRICURE COM 04963C209 69,243 1,326
2017-02-22 2016-12-31 13F/A-1 ATRICURE COM 04963C209 110,394 100,438 1,008.82 2,161 1,276.43 0.0007
2017-02-13 2016-12-31 13F ATRICURE COM 04963C209 110,394 2,161
2016-11-10 2016-09-30 13F ATRICURE COM 04963C209 9,956 5,745 136.43 157 161.67 0.0001
2016-08-12 2016-06-30 13F ATRICURE COM 04963C209 4,211 -1,000 -19.19 60 -31.82 0.0000
2016-05-12 2016-03-31 13F ATRICURE COM 04963C209 5,211 -97 -1.83 88 -26.05 0.0000
2016-02-09 2015-12-31 13F ATRICURE COM 04963C209 5,308 -4,441 -45.55 119 -44.39 0.0000
2016-02-08 2015-09-30 13F/A-1 ATRICURE COM 04963C209 9,749 -4,727 -32.65 214 -40.06 0.0001
2015-11-09 2015-09-30 13F ATRICURE COM 04963C209 9,749 214
2015-08-12 2015-06-30 13F ATRICURE COM 04963C209 14,476 -1,996 -12.12 357 5.62 0.0001
2015-05-14 2015-03-31 13F ATRICURE COM 04963C209 16,472 7,386 81.29 338 85.71 0.0001
2015-02-13 2014-12-31 13F ATRICURE COM 04963C209 9,086 -1,982 -17.91 182 12.35 0.0001
2014-12-16 2014-09-30 13F/A-1 ATRICURE COM 04963C209 11,068 3,728 50.79 162 20.00 0.0001
2014-11-14 2014-09-30 13F ATRICURE COM 04963C209 11,068 162
2014-08-12 2014-06-30 13F ATRICURE COM 04963C209 7,340 -1,096 -12.99 135 -15.09 0.0002
2014-05-13 2014-03-31 13F ATRICURE COM 04963C209 8,436 949 12.68 159 13.57 0.0001
2014-02-13 2013-12-31 13F ATRICURE COM 04963C209 7,487 7,487 140 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.