阿特里庫爾公司
US ˙ NasdaqGM ˙ US04963C2098

SecurityATRC / AtriCure, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership83,843 shares
Latest Disclosed Value $ 2,747,535
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 3.58% increase in ownership of ATRC / AtriCure, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 83,843 shares of AtriCure, Inc. (US:ATRC) valued at $2,747,535 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 80,947 shares of AtriCure, Inc.. This represents a change in shares of 3.58% during the quarter. The current value of the position is $2,272,145 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)
2025-08-26 2025-06-30 NP AtriCure EC US04963C2098 83,843 2,896 3.58 2,748 5.21 0.0617
2025-05-28 2025-03-31 NP AtriCure EC US04963C2098 80,947 1,130 1.42 2,611 7.05 0.0626
2025-02-25 2024-12-31 NP AtriCure EC US04963C2098 79,817 -13,943 -14.87 2,439 -7.23 0.0533
2024-11-26 2024-09-30 NP AtriCure EC US04963C2098 93,760 4,887 5.50 2,629 29.96 0.0497
2024-08-26 2024-06-30 NP AtriCure EC US04963C2098 88,873 6,939 8.47 2,024 -18.82 0.0412
2024-05-28 2024-03-31 NP AtriCure EC US04963C2098 81,934 -3,103 -3.65 2,492 -17.86 0.0520
2024-02-26 2023-12-31 NP AtriCure EC US04963C2098 85,037 6,039 7.64 3,035 -12.31 0.0648
2023-11-28 2023-09-30 NP AtriCure EC US04963C2098 78,998 -1,597 -1.98 3,460 -13.02 0.0903
2023-08-25 2023-06-30 NP AtriCure EC US04963C2098 80,595 7,346 10.03 3,978 31.03 0.0943
2023-05-26 2023-03-31 NP AtriCure EC US04963C2098 73,249 1,322 1.84 3,036 -4.89 0.0808
2023-02-24 2022-12-31 NP AtriCure EC US04963C2098 71,927 -429 -0.59 3,192 12.83 0.0878
2022-11-25 2022-09-30 NP AtriCure EC US04963C2098 72,356 0 0.00 2,829 -4.30 0.0811
2022-08-25 2022-06-30 NP AtriCure EC US04963C2098 72,356 2,807 4.04 2,956 -35.27 0.0816
2022-05-26 2022-03-31 NP AtriCure EC US04963C2098 69,549 1,220 1.79 4,567 -3.85 0.1064
2022-02-25 2021-12-31 NP AtriCure EC US04963C2098 68,329 -981 -1.42 4,751 -1.45 0.1030
2021-11-24 2021-09-30 NP AtriCure EC US04963C2098 69,310 0 0.00 4,821 -12.33 0.1062
2021-08-26 2021-06-30 NP AtriCure EC US04963C2098 69,310 2,733 4.11 5,498 26.04 0.1179
2021-05-27 2021-03-31 NP AtriCure EC US04963C2098 66,577 -1,856 -2.71 4,362 14.52 0.0989
2021-02-25 2020-12-31 NP AtriCure EC US04963C2098 68,433 -2,625 -3.69 3,810 34.36 0.0976
2020-11-25 2020-09-30 NP AtriCure EC US04963C2098 71,058 4,879 7.37 2,835 -4.67 0.0910
2020-08-27 2020-06-30 NP AtriCure EC US04963C2098 66,179 3,958 6.36 2,975 42.30 0.0972
2020-06-01 2020-03-31 NP AtriCure EC US04963C2098 62,221 -2,974 -4.56 2,090 -1.37 0.0854
2020-02-27 2019-12-31 NP AtriCure EC 04963C209 65,195 8,772 15.55 2,119 50.60 0.0637
2019-11-27 2019-09-30 NP AtriCure EC US04963C2098 56,423 56,423 1,407 0.0465
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.