阿特姆斯過濾技術公司
US ˙ NYSE ˙ US04956D1072

SecurityATMU / Atmus Filtration Technologies Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership143,658 shares
Latest Disclosed Value $ 5,232,024
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 0.60% increase in ownership of ATMU / Atmus Filtration Technologies Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 143,658 shares of Atmus Filtration Technologies Inc. (US:ATMU) valued at $5,232,024 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 142,808 shares of Atmus Filtration Technologies Inc.. This represents a change in shares of 0.60% during the quarter. The current value of the position is $6,595,339 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 Atmus Filtration Technologies EC US04956D1072 143,658 850 0.60 5,232 -0.25 0.1175
2025-05-28 2025-03-31 NP Atmus Filtration Technologies EC US04956D1072 142,808 1,516 1.07 5,245 -5.24 0.1258
2025-02-25 2024-12-31 NP Atmus Filtration Technologies EC US04956D1072 141,292 -23,164 -14.09 5,536 -10.32 0.1209
2024-11-26 2024-09-30 NP Atmus Filtration Technologies EC US04956D1072 164,456 4,329 2.70 6,172 33.94 0.1167
2024-08-26 2024-06-30 NP Atmus Filtration Technologies EC US04956D1072 160,127 12,114 8.18 4,608 -3.46 0.0939
2024-05-28 2024-03-31 NP Atmus Filtration Technologies EC US04956D1072 148,013 118,761 405.99 4,773 594.76 0.0996
2024-02-26 2023-12-31 NP Atmus Filtration Technologies EC US04956D1072 29,252 1,898 6.94 687 20.53 0.0147
2023-11-28 2023-09-30 NP Atmus Filtration Technologies EC US04956D1072 27,354 27,354 570 0.0149
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.