DORMAN PRODS INC DORM
COM · Common Stock · CUSIP 258278100 · ISIN US2582781009
- SectorConsumer discretionary
- IndustryMotor Vehicle Parts & Accessories
- HeadquartersColmar, PA
- Websitedormanproducts.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($9.6m this quarter). Holder counts are more reliable. Shares outstanding: 30.6m as of 2025-10-23, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $123.22. Options: 3 managers hold calls ($1.7m notional), 3 hold puts ($1.1m).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 243 |
| Q4 2022 | 241 |
| Q1 2023 | 239 |
| Q2 2023 | 231 |
| Q3 2023 | 233 |
| Q4 2023 | 226 |
| Q1 2024 | 259 |
| Q2 2024 | 264 |
| Q3 2024 | 303 |
| Q4 2024 | 339 |
| Q1 2025 | 346 |
| Q2 2025 | 341 |
| Q3 2025 | 345 |
| Q4 2025 | 347 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 128 | 103 |
| Q2 2024 | 123 | 123 |
| Q3 2024 | 158 | 121 |
| Q4 2024 | 170 | 142 |
| Q1 2025 | 185 | 153 |
| Q2 2025 | 181 | 161 |
| Q3 2025 | 157 | 171 |
| Q4 2025 | 163 | 167 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $12.2m | $3.7m | 0.30 |
| Q2 2025 | $2.4m | $846.4k | 0.35 |
| Q3 2025 | $1.1m | $1.5m | 1.41 |
| Q4 2025 | $1.7m | $1.1m | 0.68 |
Biggest buyers
| FULLER & THALER ASSET MANAGEMENT, INC. | Added | +878.1k |
| WESTFIELD CAPITAL MANAGEMENT CO LP | New | +462.2k |
| VICTORY CAPITAL MANAGEMENT INC | Added | +357.4k |
| JENNISON ASSOCIATES LLC | Added | +147.2k |
| T. Rowe Price Investment Management, Inc. | Added | +111.8k |
| Fiera Capital Corp | Added | +105.4k |
| Mawer Investment Management Ltd. | New | +91.2k |
| First Eagle Investment Management, LLC | New | +73.3k |
| BlackRock, Inc. | Added | +70.0k |
| GOLDMAN SACHS GROUP INC | Added | +53.9k |
Biggest sellers
| MACQUARIE GROUP LTD | Sold out | -196.5k |
| JPMORGAN CHASE & CO | Reduced | -176.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -152.5k |
| LORD, ABBETT & CO. LLC | Sold out | -150.1k |
| VANGUARD GROUP INC | Reduced | -89.8k |
| Nuveen, LLC | Reduced | -73.8k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Reduced | -62.7k |
| CITADEL ADVISORS LLC | Sold out | -56.0k |
| GENEVA CAPITAL MANAGEMENT LLC | Reduced | -49.4k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -48.5k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $1.1m8.8k shares |
| SIMPLEX TRADING, LLC | Added | $295.7k2.4k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $271.0k2.2k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $763.8k6.2k shares |
| CITADEL ADVISORS LLC | Added | $344.9k2.8k shares |
| SIMPLEX TRADING, LLC | Reduced | $12.3k100 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
BERMAN STEVEN L
13D · may seek influence
-1.5 pts · filed 2025-11-12
Stated purposeItem 4 is hereby amended and supplemented by adding the following: The shares of Common Stock reported herein as beneficially owned by the Reporting Person were acquired by the Reporting Person for investment purposes. As Non-Executive Chairman and a member of the board of directors (the "Board") of the Issuer, the Reporting Person will regularly consider potential actions and transactions that may be advantageous to the Issuer, including possible mergers, acquisitions, reorganizations or other material changes in the business, corporate structure, management, policies, governing instruments, securities or regulatory or reporting obligations of the Issuer. As previously disclosed, on December 13, 2024, the Reporting Person (in his capacity as co-trustee for various family trusts), togeth… Full filing |
6.9% |
| BERMAN MARC H 13G · passive investor -0.6 pts · filed 2026-02-09 | 5.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.1% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 0 | — | 1 | $46.0k | — |
| Q3 2024 | 0 | — | 2 | $10.6m | $10.6m |
| Q4 2024 | 0 | — | 7 | $6.9m | $2.5m |
| Q1 2025 | 0 | — | 3 | $10.0m | $9.8m |
| Q2 2025 | 0 | — | 1 | $380.5k | — |
| Q3 2025 | 0 | — | 2 | $518.7k | $282.2k |
| Q4 2025 | 0 | — | 2 | $2.6m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-12-12 | McKnight John President, Heavy Duty | Sold | $257.6k2.0k shares |
| 2025-12-01 | McKnight John President, Heavy Duty | Sold | $640.2k4.9k shares |
| 2025-10-31 | Hession David SVP and CFO | Sold | $1.7m12.5k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 4.0m $490.2m | Added +70.0k |
| VANGUARD GROUP INC 0.01% of their portfolio | 3.0m $366.1m | Reduced -89.8k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.37% of their portfolio | 1.8m $217.2m | Added +878.1k |
| MORGAN STANLEY 0.01% of their portfolio | 1.4m $166.6m | Added +915 |
| STATE STREET CORP 0.00% of their portfolio | 1.1m $130.8m | Added +7.8k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 1.0m $129.1m | Added +21.9k |
| JENNISON ASSOCIATES LLC 0.06% of their portfolio | 813.8k $100.2m | Added +147.2k |
| Invesco Ltd. 0.01% of their portfolio | 763.5k $94.1m | Reduced -48.3k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 713.3k $87.9m | Added +26.2k |
| GW&K Investment Management, LLC 0.56% of their portfolio | 529.6k $65.2m | Reduced -19.7k |
| T. Rowe Price Investment Management, Inc. 0.03% of their portfolio | 522.0k $64.3m | Added +111.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio | 511.1k $63.0m | Reduced -152.5k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 507.7k $62.5m | Added +40.9k |
| ROYCE & ASSOCIATES LP 0.62% of their portfolio | 499.0k $61.5m | Added +1.5k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.24% of their portfolio | 462.2k $56.9m | New |
| Fiera Capital Corp 0.17% of their portfolio | 431.3k $53.1m | Added +105.4k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 424.5k $52.3m | Reduced -12.1k |
| GENEVA CAPITAL MANAGEMENT LLC 0.94% of their portfolio | 405.3k $49.9m | Reduced -49.4k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 377.5k $46.5m | Reduced -8.6k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 367.3k $45.2m | Reduced -29.0k |
| VICTORY CAPITAL MANAGEMENT INC 0.03% of their portfolio | 366.1k $45.1m | Added +357.4k |
| NORGES BANK 0.00% of their portfolio | 336.8k $41.5m | Not comparable |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.28% of their portfolio | 332.7k $41.0m | Reduced -62.7k |
| Clark Capital Management Group, Inc. 0.25% of their portfolio | 332.5k $41.0m | Added +15.6k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 324.4k $40.0m | Reduced -9.3k |
| LOOMIS SAYLES & CO L P 0.04% of their portfolio | 262.1k $32.3m | Reduced -12.2k |
| BESSEMER GROUP INC 0.05% of their portfolio | 244.3k $30.1m | Added +51.1k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 235.9k $29.1m | Reduced -35.8k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.04% of their portfolio | 199.1k $24.5m | First filing |
| SOUTHERNSUN ASSET MANAGEMENT, LLC 3.28% of their portfolio | 190.6k $23.5m | Reduced -9.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 172.9k $21.3m | Reduced -5.3k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 171.6k $21.1m | Reduced -19.0k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 162.5k $20.0m | Added +53.9k |
| Pembroke Management, LTD 2.01% of their portfolio | 157.6k $19.4m | Added +7.6k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 147.7k $18.2m | Added +4.2k |
| WCM INVESTMENT MANAGEMENT, LLC 0.03% of their portfolio | 129.3k $16.2m | Reduced -3.3k |
| Leeward Investments, LLC - MA 0.73% of their portfolio | 116.6k $14.4m | Reduced -573 |
| ALGERT GLOBAL LLC 0.22% of their portfolio | 112.3k $13.8m | Reduced -32.4k |
| KTF INVESTMENTS, LLC 2.25% of their portfolio | 111.1k $13.7m | First filing |
| Tributary Capital Management, LLC 1.33% of their portfolio | 109.3k $13.5m | Reduced -7.9k |
| SNYDER CAPITAL MANAGEMENT L P 0.24% of their portfolio | 105.9k $13.0m | Reduced -4.8k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.02% of their portfolio | 103.2k $12.7m | Unchanged |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 101.5k $12.5m | Added +18.7k |
| Public Sector Pension Investment Board 0.04% of their portfolio | 96.3k $11.9m | Reduced -12.1k |
| UBS Group AG 0.00% of their portfolio | 95.6k $11.8m | Added +45.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 91.9k $11.3m | Added +4.5k |
| Mawer Investment Management Ltd. 0.06% of their portfolio | 91.2k $11.2m | New |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 87.0k $10.8m | Reduced -12.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 79.7k $9.8m | Added +8.8k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 77.2k $9.5m | Reduced -176.5k |
| NICHOLAS COMPANY, INC. 0.16% of their portfolio | 74.9k $9.2m | Added +60 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 74.7k $9.2m | Reduced -24.9k |
| Summit Creek Advisors LLC 1.44% of their portfolio | 74.1k $9.1m | Reduced -3.2k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 73.7k $9.1m | Reduced -4.4k |
| First Eagle Investment Management, LLC 0.02% of their portfolio | 73.3k $9.0m | New |
| Legal & General Group Plc 0.00% of their portfolio | 70.0k $8.6m | Reduced -3.7k |
| Nuveen, LLC 0.00% of their portfolio | 57.5k $7.1m | Reduced -73.8k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.02% of their portfolio | 53.9k $6.6m | Added +16.7k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 53.6k $6.6m | Added +2.1k |
| Swiss National Bank 0.00% of their portfolio | 51.2k $6.3m | Added +900 |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 50.4k $6.2m | Reduced -48.5k |
| Atom Investors LP 0.49% of their portfolio | 50.2k $6.2m | Added +37.4k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 50.0k $6.2m | Added +11.8k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 45.6k $5.6m | Reduced -21.4k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.02% of their portfolio | 44.6k $5.5m | Added +3.7k |
| Bridge City Capital, LLC 1.59% of their portfolio | 43.9k $5.4m | Reduced -5.1k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 43.7k $5.4m | Reduced -4.1k |
| BARCLAYS PLC 0.00% of their portfolio | 43.1k $5.3m | Added +3.5k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.02% of their portfolio | 42.7k $5.3m | Added +2.1k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 41.9k $5.2m | Reduced -785 |
| LPL Financial LLC 0.00% of their portfolio | 40.5k $5.0m | Added +7.0k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.10% of their portfolio | 40.1k $4.9m | Unchanged |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.03% of their portfolio | 38.9k $4.8m | Reduced -6.1k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 38.8k $4.8m | Added +26.3k |
| RICE HALL JAMES & ASSOCIATES, LLC 0.25% of their portfolio | 37.5k $4.6m | Reduced -95 |
| CenterBook Partners LP 0.22% of their portfolio | 35.8k $4.4m | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 35.5k $4.4m | Added +1.4k |
| RK Asset Management, LLC 4.03% of their portfolio | 34.6k $4.3m | Reduced -354 |
| Robeco Institutional Asset Management B.V. 0.01% of their portfolio | 33.8k $4.2m | Unchanged |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 33.3k $4.1m | Reduced -230 |
| FIRST NATIONAL BANK OF OMAHA 0.12% of their portfolio | 32.7k $4.0m | Added +30 |
| Sterling Capital Management LLC 0.06% of their portfolio | 31.8k $3.9m | Reduced -3.2k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 31.7k $3.9m | Reduced -22.9k |
| NATIXIS ADVISORS, LLC 0.01% of their portfolio | 30.9k $3.8m | Reduced -1.8k |
| Campbell & CO Investment Adviser LLC 0.18% of their portfolio | 30.0k $3.7m | Added +11.9k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 29.3k $3.6m | Added +6.6k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 28.7k $3.9m | Unchanged |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 28.3k $3.5m | Reduced -2.3k |
| Long Road Investment Counsel, LLC 1.32% of their portfolio | 28.2k $3.5m | Added +350 |
| PDT Partners, LLC 0.23% of their portfolio | 28.2k $3.5m | Unchanged |
| RITHOLTZ WEALTH MANAGEMENT 0.06% of their portfolio | 28.0k $3.5m | Reduced -2.8k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.02% of their portfolio | 25.3k $3.1m | Added +2.3k |
| CANADA LIFE ASSURANCE Co 0.01% of their portfolio | 25.0k $3.1m | Added +1.6k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 24.8k $3.1m | Added +402 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 24.8k $3.1m | Unchanged |
| Cerity Partners LLC 0.00% of their portfolio | 24.7k $3.0m | Reduced -4.2k |
| Orion Porfolio Solutions, LLC 0.02% of their portfolio | 24.0k $3.0m | Reduced -1.6k |
| INTECH INVESTMENT MANAGEMENT LLC 0.03% of their portfolio | 24.0k $3.0m | Added +2.0k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 23.7k $2.9m | Added +794 |
| AMERICAN CAPITAL MANAGEMENT INC 0.11% of their portfolio | 20.4k $2.5m | Added +49 |