多爾曼產品有限公司
US ˙ NasdaqGS ˙ US2582781009

SecurityDORM / Dorman Products, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership1,343,894 shares
Ownership 4.40%
Morgan Stanley ownership in DORM / Dorman Products, Inc.

2025-05-06 - Morgan Stanley has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,343,894 shares of Dorman Products, Inc. (US:DORM). This represents 4.4 percent ownership of the company. In their previous filing dated 2024-11-07 , Morgan Stanley had reported owning 1,807,267 shares, indicating a decrease of -25.64 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2025-05-06 2025-05-06 13G/A 1,807,267 1,343,894 -25.64 4.40 -25.42
2024-11-07 2024-11-07 13G/A 2,288,165 1,807,267 -21.02 5.90 -19.18
2024-02-09 2024-02-09 13G/A 1,760,361 2,288,165 29.98 7.30 30.36
2023-02-09 2023-02-09 13G 1,760,361 5.60

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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 DORMAN PRODS COM 258278100 1,415,141 62,958 4.66 147,684 -11.34 0.0089
2026-05-27 2025-12-31 13F/A-1 DORMAN PRODS COM 258278100 1,352,183 915 0.07 166,576 -20.92 0.0099
2026-02-13 2025-12-31 13F DORMAN PRODS COM 258278100 1,352,183 915 166,576 0.0099
2026-05-27 2025-09-30 13F/A-1 DORMAN PRODS COM 258278100 1,351,268 -56,776 -4.03 210,636 21.95 0.0128
2025-11-14 2025-09-30 13F DORMAN PRODS COM 258278100 1,351,268 -56,776 210,636 0.0128
2025-08-15 2025-06-30 13F DORMAN PRODS COM 258278100 1,408,044 -41,711 -2.88 172,725 -1.16 0.0113
2025-05-15 2025-03-31 13F DORMAN PRODS COM 258278100 1,449,755 -229,658 -13.67 174,754 -19.68 0.0125
2025-05-15 2024-12-31 13F/A-1 DORMAN PRODS COM 258278100 1,679,413 -259,557 -13.39 217,568 -0.81 0.0152
2025-02-14 2024-12-31 13F DORMAN PRODS COM 258278100 1,679,413 -259,557 217,568 0.0152
2025-05-14 2024-09-30 13F/A-2 DORMAN PRODS COM 258278100 1,938,970 -270,956 -12.26 219,337 8.49 0.0159
2025-02-14 2024-09-30 13F/A-1 DORMAN PRODS COM 258278100 1,938,970 -270,956 219,337 0.0159
2024-11-14 2024-09-30 13F DORMAN PRODS COM 258278100 1,938,970 -270,956 219,337 0.0019
2025-05-14 2024-06-30 13F/A-2 DORMAN PRODS COM 258278100 2,209,926 -252,802 -10.27 202,164 -14.84 0.0156
2024-10-17 2024-06-30 13F/A-1 DORMAN PRODS COM 258278100 2,209,926 -252,802 202,164 0.0156
2024-08-14 2024-06-30 13F DORMAN PRODS COM 258278100 2,209,926 -252,802 202,164 0.0156
2024-10-17 2024-03-31 13F/A-2 DORMAN PRODS COM 258278100 2,462,728 -29,236 -1.17 237,383 14.21 0.0190
2024-08-16 2024-03-31 13F/A-1 DORMAN PRODS COM 258278100 2,462,728 -29,236 237,383 0.0022
2024-05-15 2024-03-31 13F DORMAN PRODS COM 258278100 2,462,728 -29,236 237,383 0.0190
2024-08-16 2023-12-31 13F/A-1 DORMAN PRODS COM 258278100 2,491,964 217,401 9.56 207,855 20.62 0.0183
2024-02-13 2023-12-31 13F DORMAN PRODS COM 258278100 2,491,964 217,401 207,855 0.0183
2023-11-15 2023-09-30 13F DORMAN PRODS COM 258278100 2,274,563 53,328 2.40 172,321 -1.59 0.0175
2023-08-14 2023-06-30 13F DORMAN PRODS COM 258278100 2,221,235 240,755 12.16 175,100 2.50 0.0173
2023-05-15 2023-03-31 13F DORMAN PRODS COM 258278100 1,980,480 107,744 5.75 170,836 12.80 0.0183
2023-02-14 2022-12-31 13F DORMAN PRODS COM 258278100 1,872,736 1,662,313 789.99 151,448 776.44 0.0172
2022-11-14 2022-09-30 13F DORMAN PRODS COM 258278100 210,423 -44,232 -17.37 17,280 -38.15 0.0024
2022-10-27 2022-06-30 13F/A-1 DORMAN PRODS COM 258278100 254,655 92,907 57.44 27,938 81.76 0.0036
2022-08-15 2022-06-30 13F DORMAN PRODS COM 258278100 254,655 92,907 27,938 0.0007
2022-10-27 2022-03-31 13F/A-1 DORMAN PRODS COM 258278100 161,748 -13,938 -7.93 15,371 -22.58 0.0021
2022-05-13 2022-03-31 13F DORMAN PRODS COM 258278100 161,748 -13,938 15,371 0.0021
2022-02-14 2021-12-31 13F DORMAN PRODS COM 258278100 175,686 54,328 44.77 19,854 72.81 0.0025
2021-11-15 2021-09-30 13F DORMAN PRODS COM 258278100 121,358 8,507 7.54 11,489 -1.80 0.0015
2021-08-23 2021-06-30 13F/A-1 DORMAN PRODS COM 258278100 112,851 16,159 16.71 11,699 17.87 0.0015
2021-08-16 2021-06-30 13F DORMAN PRODS COM 258278100 112,851 16,159 11,699 0.0003
2021-05-17 2021-03-31 13F DORMAN PRODS COM 258278100 96,692 -13,253 -12.05 9,925 3.98 0.0015
2021-02-16 2020-12-31 13F DORMAN PRODS COM 258278100 109,945 20,665 23.15 9,545 18.29 0.0015
2020-11-13 2020-09-30 13F DORMAN PRODUCTS COM 258278100 89,280 -10,468 -10.49 8,069 20.61 0.0016
2020-08-14 2020-06-30 13F DORMAN PRODUCTS COM 258278100 99,748 -10,457 -9.49 6,690 9.82 0.0015
2020-05-26 2020-03-31 13F/A-1 DORMAN PRODUCTS COM 258278100 110,205 -47,650 -30.19 6,092 -49.03 0.0017
2020-05-15 2020-03-31 13F DORMAN PRODUCTS COM 258278100 110,205 -47,650 6,092 467.9926
2020-02-14 2019-12-31 13F DORMAN PRODUCTS COM 258278100 157,855 23,201 17.23 11,953 11.60 0.0028
2019-11-14 2019-09-30 13F DORMAN PRODUCTS COM 258278100 134,654 -30,842 -18.64 10,711 -25.73 0.0028
2019-08-14 2019-06-30 13F DORMAN PRODUCTS COM 258278100 165,496 119,850 262.56 14,422 258.76 0.0038
2019-05-15 2019-03-31 13F DORMAN PRODUCTS COM 258278100 45,646 -10,170 -18.22 4,020 -20.00 0.0011
2019-02-14 2018-12-31 13F DORMAN PRODUCTS COM 258278100 55,816 -3,747 -6.29 5,025 9.67 0.0015
2019-04-23 2018-09-30 13F/A-2 DORMAN PRODUCTS COM 258278100 59,563 -12,377 -17.20 4,582 -6.78 0.0011
2018-11-20 2018-09-30 13F/A-1 DORMAN PRODUCTS COM 258278100 59,563 0 4,582 0.0011
2018-11-14 2018-09-30 13F DORMAN PRODUCTS COM 258278100 59,563 -12,377 4,582
2019-04-23 2018-06-30 13F/A-1 DORMAN PRODUCTS COM 258278100 71,940 -2,074 -2.80 4,915 0.33 0.0013
2018-08-14 2018-06-30 13F DORMAN PRODUCTS COM 258278100 71,940 -2,074 4,915
2019-04-23 2018-03-31 13F/A-1 DORMAN PRODUCTS COM 258278100 74,014 -180,385 -70.91 4,899 -68.50 0.0014
2018-05-14 2018-03-31 13F DORMAN PRODUCTS COM 258278100 74,014 -180,385 4,899
2019-04-23 2017-12-31 13F/A-1 DORMAN PRODUCTS COM 258278100 254,399 144,676 131.86 15,554 97.91 0.0043
2018-02-14 2017-12-31 13F DORMAN PRODUCTS COM 258278100 254,399 144,676 15,554
2017-11-14 2017-09-30 13F DORMAN PRODUCTS COM 258278100 109,723 70,169 177.40 7,859 140.04 0.0024
2017-08-11 2017-06-30 13F DORMAN PRODUCTS COM 258278100 39,554 -12,777 -24.42 3,274 -23.83 0.0010
2017-05-22 2017-03-31 13F/A-1 DORMAN PRODUCTS COM 258278100 52,331 -38,951 -42.67 4,298 -35.55 0.0013
2017-05-12 2017-03-31 13F DORMAN PRODUCTS COM 258278100 52,331 4,298
2017-02-22 2016-12-31 13F/A-1 DORMAN PRODUCTS COM 258278100 91,282 77,232 549.69 6,669 642.65 0.0022
2017-02-13 2016-12-31 13F DORMAN PRODUCTS COM 258278100 91,282 6,669
2016-11-10 2016-09-30 13F DORMAN PRODUCTS COM 258278100 14,050 -9,243 -39.68 898 -32.58 0.0003
2016-08-12 2016-06-30 13F DORMAN PRODUCTS COM 258278100 23,293 1,755 8.15 1,332 13.55 0.0005
2016-05-12 2016-03-31 13F DORMAN PRODUCTS COM 258278100 21,538 -8,573 -28.47 1,173 -17.97 0.0005
2016-02-09 2015-12-31 13F DORMAN PRODUCTS COM 258278100 30,111 852 2.91 1,430 -3.96 0.0005
2016-02-08 2015-09-30 13F/A-1 DORMAN PRODUCTS COM 258278100 29,259 738 2.59 1,489 9.57 0.0006
2015-11-09 2015-09-30 13F DORMAN PRODUCTS COM 258278100 29,259 1,489
2015-08-12 2015-06-30 13F DORMAN PRODUCTS COM 258278100 28,521 3,550 14.22 1,359 9.33 0.0005
2015-05-14 2015-03-31 13F DORMAN PRODUCTS COM 258278100 24,971 6,310 33.81 1,243 37.96 0.0005
2015-02-13 2014-12-31 13F DORMAN PRODUCTS COM 258278100 18,661 3,666 24.45 901 50.17 0.0003
2014-12-16 2014-09-30 13F/A-1 DORMAN PRODUCTS COM 258278100 14,995 -36,007 -70.60 600 -80.08 0.0002
2014-11-14 2014-09-30 13F DORMAN PRODUCTS COM 258278100 14,995 600
2014-05-13 2014-03-31 13F DORMAN PRODUCTS COM 258278100 51,002 -497 -0.97 3,012 4.37 0.0013
2014-02-13 2013-12-31 13F DORMAN PRODUCTS COM 258278100 51,499 -5,398 -9.49 2,886 2.38 0.0012
2013-11-13 2013-09-30 13F DORMAN PRODUCTS COM 258278100 56,897 27,062 90.71 2,819 107.13 0.0013
2013-08-08 2013-06-30 13F DORMAN PRODUCTS COM 258278100 29,835 29,835 1,361 0.0007
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.