Dorman 제품, Inc.
US ˙ NasdaqGS ˙ US2582781009

SecurityDORM / Dorman Products, Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership47,845 shares
Latest Disclosed Value $ 5,869,146
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 8.57% increase in ownership of DORM / Dorman Products, Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 47,845 shares of Dorman Products, Inc. (US:DORM) valued at $5,869,146 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 44,069 shares of Dorman Products, Inc.. This represents a change in shares of 8.57% during the quarter. The current value of the position is $6,077,750 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 Dorman Products EC US2582781009 47,845 3,776 8.57 5,869 10.49 0.1318
2025-05-28 2025-03-31 NP Dorman Products EC US2582781009 44,069 468 1.07 5,312 -5.95 0.1274
2025-02-25 2024-12-31 NP Dorman Products EC US2582781009 43,601 -7,901 -15.34 5,649 -3.04 0.1233
2024-11-26 2024-09-30 NP Dorman Products EC US2582781009 51,502 1,842 3.71 5,826 28.25 0.1102
2024-08-26 2024-06-30 NP Dorman Products EC US2582781009 49,660 3,132 6.73 4,543 1.29 0.0925
2024-05-28 2024-03-31 NP Dorman Products EC US2582781009 46,528 -1,481 -3.08 4,485 11.99 0.0936
2024-02-26 2023-12-31 NP Dorman Products EC US2582781009 48,009 3,320 7.43 4,004 18.29 0.0855
2023-11-28 2023-09-30 NP Dorman Products EC US2582781009 44,689 -723 -1.59 3,386 -5.42 0.0883
2023-08-25 2023-06-30 NP Dorman Products EC US2582781009 45,412 3,367 8.01 3,580 -1.30 0.0849
2023-05-26 2023-03-31 NP Dorman Products EC US2582781009 42,045 463 1.11 3,627 7.85 0.0966
2023-02-24 2022-12-31 NP Dorman Products EC US2582781009 41,582 -1,302 -3.04 3,363 -4.52 0.0925
2022-11-25 2022-09-30 NP Dorman Products EC US2582781009 42,884 2,167 5.32 3,522 -21.18 0.1009
2022-08-25 2022-06-30 NP Dorman Products EC US2582781009 40,717 -264 -0.64 4,467 14.71 0.1233
2022-05-26 2022-03-31 NP Dorman Products EC US2582781009 40,981 754 1.87 3,894 -14.34 0.0907
2022-02-25 2021-12-31 NP Dorman Products EC US2582781009 40,227 -506 -1.24 4,546 17.89 0.0986
2021-11-24 2021-09-30 NP Dorman Products EC US2582781009 40,733 0 0.00 3,856 -8.67 0.0850
2021-08-26 2021-06-30 NP Dorman Products EC US2582781009 40,733 301 0.74 4,223 1.76 0.0906
2021-05-27 2021-03-31 NP Dorman Products EC US2582781009 40,432 -1,692 -4.02 4,150 13.45 0.0941
2021-02-25 2020-12-31 NP Dorman Products EC US2582781009 42,124 -1,181 -2.73 3,657 -6.54 0.0937
2020-11-25 2020-09-30 NP Dorman Products EC US2582781009 43,305 -1,097 -2.47 3,914 31.40 0.1256
2020-08-27 2020-06-30 NP Dorman Products EC US2582781009 44,402 -818 -1.81 2,978 19.17 0.0973
2020-06-01 2020-03-31 NP Dorman Products EC US2582781009 45,220 3,647 8.77 2,499 -20.59 0.1022
2020-02-27 2019-12-31 NP Dorman Products EC 258278100 41,573 79 0.19 3,148 -4.64 0.0947
2019-11-27 2019-09-30 NP Dorman Products EC US2582781009 41,494 41,494 3,300 0.1091
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.