Atea 제약, Inc.
US ˙ NasdaqGS ˙ US04683R1068

SecurityAVIR / Atea Pharmaceuticals, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership132,612 shares
Latest Disclosed Value $ 477,403
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series ownership in AVIR / Atea Pharmaceuticals, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 132,612 shares of Atea Pharmaceuticals, Inc. (US:AVIR) valued at $477,403 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 132,612 shares of Atea Pharmaceuticals, Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $563,601 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 Atea Pharmaceuticals EC US04683R1068 132,612 0 0.00 477 20.45 0.0107
2025-05-28 2025-03-31 NP Atea Pharmaceuticals EC US04683R1068 132,612 0 0.00 397 -10.81 0.0095
2025-02-25 2024-12-31 NP Atea Pharmaceuticals EC US04683R1068 132,612 -14,426 -9.81 444 -9.76 0.0097
2024-11-26 2024-09-30 NP Atea Pharmaceuticals EC US04683R1068 147,038 348 0.24 493 1.44 0.0093
2024-08-26 2024-06-30 NP Atea Pharmaceuticals EC US04683R1068 146,690 12,375 9.21 486 -10.52 0.0099
2024-05-28 2024-03-31 NP Atea Pharmaceuticals EC US04683R1068 134,315 0 0.00 543 32.52 0.0113
2024-02-26 2023-12-31 NP Atea Pharmaceuticals EC US04683R1068 134,315 0 0.00 410 1.74 0.0087
2023-11-28 2023-09-30 NP Atea Pharmaceuticals EC US04683R1068 134,315 0 0.00 403 -19.92 0.0105
2023-08-25 2023-06-30 NP Atea Pharmaceuticals EC US04683R1068 134,315 11,851 9.68 502 22.44 0.0119
2023-05-26 2023-03-31 NP Atea Pharmaceuticals EC US04683R1068 122,464 0 0.00 410 -30.39 0.0109
2023-02-24 2022-12-31 NP Atea Pharmaceuticals EC US04683R1068 122,464 0 0.00 589 -15.37 0.0162
2022-11-25 2022-09-30 NP Atea Pharmaceuticals EC US04683R1068 122,464 4,588 3.89 697 -16.75 0.0200
2022-08-25 2022-06-30 NP Atea Pharmaceuticals EC US04683R1068 117,876 13,516 12.95 837 11.02 0.0231
2022-05-26 2022-03-31 NP Atea Pharmaceuticals EC US04683R1068 104,360 7,256 7.47 753 -13.25 0.0176
2022-02-25 2021-12-31 NP Atea Pharmaceuticals EC US04683R1068 97,104 0 0.00 868 -74.50 0.0188
2021-11-24 2021-09-30 NP Atea Pharmaceuticals EC US04683R1068 97,104 0 0.00 3,404 63.26 0.0750
2021-08-26 2021-06-30 NP Atea Pharmaceuticals EC US04683R1068 97,104 75,009 339.48 2,086 52.86 0.0447
2021-05-27 2021-03-31 NP Atea Pharmaceuticals EC US04683R1068 22,095 0 0.00 1,364 47.78 0.0309
2021-02-25 2020-12-31 NP Atea Pharmaceuticals EC US04683R1068 22,095 22,095 923 0.0237
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.