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 ($9.2m this quarter). Holder counts are more reliable. Shares outstanding: 29.9m as of 2026-04-29, 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 ≈ $104.37. Options: 2 managers hold calls ($866.2k notional), 3 hold puts ($1.1m).
Trends to Q1 2026
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 |
| Q1 2026 | 318 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| 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 |
| Q1 2026 | 154 | 185 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $2.4m | $846.4k | 0.35 |
| Q3 2025 | $1.1m | $1.5m | 1.41 |
| Q4 2025 | $1.7m | $1.1m | 0.68 |
| Q1 2026 | $866.2k | $1.1m | 1.25 |
Biggest buyers
| Bragg Financial Advisors, Inc | New | +242.3k |
| Mawer Investment Management Ltd. | Added | +163.9k |
| GENEVA CAPITAL MANAGEMENT LLC | Added | +159.0k |
| ROYCE & ASSOCIATES LP | Added | +117.7k |
| AMERIPRISE FINANCIAL INC | Added | +95.2k |
| CITADEL ADVISORS LLC | New | +88.8k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | Added | +87.4k |
| MORGAN STANLEY | Added | +63.0k |
| SOUTHERNSUN ASSET MANAGEMENT, LLC | Added | +55.9k |
| UBS Group AG | Added | +54.8k |
Biggest sellers
| FULLER & THALER ASSET MANAGEMENT, INC. | Reduced | -1.5m |
| Clark Capital Management Group, Inc. | Sold out | -332.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | -178.7k |
| Invesco Ltd. | Reduced | -128.0k |
| T. Rowe Price Investment Management, Inc. | Reduced | -100.3k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Reduced | -88.6k |
| ALGERT GLOBAL LLC | Reduced | -73.1k |
| Pembroke Management, LTD | Reduced | -70.4k |
| SNYDER CAPITAL MANAGEMENT L P | Reduced | -62.7k |
| Atom Investors LP | Sold out | -50.2k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $855.8k8.2k shares |
| SIMPLEX TRADING, LLC | Reduced | $10.4k100 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $814.0k7.8k shares |
| IMC-Chicago, LLC | New | $260.9k2.5k shares |
| SIMPLEX TRADING, LLC | Unchanged | $10.4k100 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 Q1 2026
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 |
|---|---|---|---|---|---|
| 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 | — |
| Q1 2026 | 0 | — | 1 | $198.1k | $198.1k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-03-12 | Long Donna M. SVP, CIO | Sold plan | $97.6k947 shares |
| 2026-01-02 | Long Donna M. SVP, CIO | Sold plan | $100.5k812 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, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 4.0m $418.2m | Added +27.7k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 1.5m $157.0m | First filing |
| MORGAN STANLEY 0.01% of their portfolio | 1.4m $147.7m | Added +63.0k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.2m $129.1m | First filing |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 1.1m $114.7m | Added +51.7k |
| STATE STREET CORP 0.00% of their portfolio | 1.1m $114.7m | Added +37.6k |
| JENNISON ASSOCIATES LLC 0.06% of their portfolio | 826.3k $86.2m | Added +12.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 713.2k $74.4m | Reduced -69 |
| Invesco Ltd. 0.01% of their portfolio | 635.5k $66.3m | Reduced -128.0k |
| ROYCE & ASSOCIATES LP 0.64% of their portfolio | 616.7k $64.4m | Added +117.7k |
| GENEVA CAPITAL MANAGEMENT LLC 1.25% of their portfolio | 564.4k $58.9m | Added +159.0k |
| GW&K Investment Management, LLC 0.47% of their portfolio | 513.7k $53.6m | Reduced -16.0k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 472.7k $49.3m | Added +95.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 461.6k $48.2m | Reduced -46.1k |
| WESTFIELD CAPITAL MANAGEMENT CO LP 0.20% of their portfolio | 461.3k $48.1m | Reduced -930 |
| Fiera Capital Corp 0.16% of their portfolio | 442.9k $46.2m | Added +11.5k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 425.0k $44.3m | Added +469 |
| T. Rowe Price Investment Management, Inc. 0.03% of their portfolio | 421.7k $44.0m | Reduced -100.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 410.0k $42.8m | Added +42.7k |
| VICTORY CAPITAL MANAGEMENT INC 0.03% of their portfolio | 398.1k $41.5m | Added +32.0k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 332.4k $34.7m | Reduced -178.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 330.4k $34.5m | Added +6.0k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.11% of their portfolio | 307.9k $32.1m | Reduced -1.5m |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.21% of their portfolio | 283.0k $29.5m | Reduced -49.7k |
| Mawer Investment Management Ltd. 0.17% of their portfolio | 255.2k $26.6m | Added +163.9k |
| SOUTHERNSUN ASSET MANAGEMENT, LLC 3.73% of their portfolio | 246.5k $25.7m | Added +55.9k |
| Bragg Financial Advisors, Inc 0.80% of their portfolio | 242.3k $25.3m | New |
| LOOMIS SAYLES & CO L P 0.03% of their portfolio | 242.0k $25.3m | Reduced -20.2k |
| BESSEMER GROUP INC 0.04% of their portfolio | 218.9k $22.8m | Reduced -25.4k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 192.9k $20.1m | First filing |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 192.0k $20.0m | Reduced -43.9k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 171.0k $17.8m | Added +8.4k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 166.2k $17.3m | Reduced -6.6k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 154.7k $16.1m | Reduced -16.9k |
| UBS Group AG 0.00% of their portfolio | 150.4k $15.7m | Added +54.8k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 149.9k $15.6m | Added +2.1k |
| Leeward Investments, LLC - MA 0.77% of their portfolio | 149.6k $15.6m | Added +33.1k |
| Tributary Capital Management, LLC 1.48% of their portfolio | 146.0k $15.2m | Added +36.7k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 144.0k $15.0m | Added +42.5k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.06% of their portfolio | 132.0k $13.8m | Added +87.4k |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. 0.02% of their portfolio | 110.5k $11.5m | Reduced -88.6k |
| KTF INVESTMENTS, LLC 1.88% of their portfolio | 105.2k $11.0m | Reduced -5.9k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.01% of their portfolio | 102.5k $10.7m | Reduced -711 |
| Public Sector Pension Investment Board 0.03% of their portfolio | 99.5k $10.4m | Added +3.2k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 95.8k $10.0m | Added +21.1k |
| First Eagle Investment Management, LLC 0.02% of their portfolio | 91.3k $9.5m | Added +18.0k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 88.8k $9.3m | New |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 87.7k $9.1m | Added +37.2k |
| Pembroke Management, LTD 1.31% of their portfolio | 87.1k $9.1m | Reduced -70.4k |
| WCM INVESTMENT MANAGEMENT, LLC 0.02% of their portfolio | 85.6k $8.8m | Reduced -43.7k |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 82.8k $8.6m | Reduced -4.2k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 75.0k $7.8m | Added +1.3k |
| NICHOLAS COMPANY, INC. 0.15% of their portfolio | 74.5k $7.8m | Reduced -365 |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.03% of their portfolio | 69.5k $7.3m | Added +15.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 67.0k $6.9m | Reduced -10.2k |
| Summit Creek Advisors LLC 1.39% of their portfolio | 64.9k $6.8m | Reduced -9.2k |
| Legal & General Group Plc 0.00% of their portfolio | 64.7k $6.7m | Reduced -5.3k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 62.2k $6.5m | Added +12.1k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 61.9k $6.5m | Reduced -17.7k |
| AMERICAN CAPITAL MANAGEMENT INC 0.34% of their portfolio | 60.4k $6.3m | Added +40.0k |
| Nuveen, LLC 0.00% of their portfolio | 58.1k $6.1m | Added +671 |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 57.3k $6.0m | Added +25.5k |
| CenterBook Partners LP 0.31% of their portfolio | 55.8k $5.8m | Added +20.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 54.1k $5.6m | Added +493 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.02% of their portfolio | 53.2k $5.5m | Added +10.4k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 52.0k $5.4m | Added +22.7k |
| Swiss National Bank 0.00% of their portfolio | 51.2k $5.3m | Unchanged |
| Bridge City Capital, LLC 1.35% of their portfolio | 46.8k $4.9m | Added +2.9k |
| SNYDER CAPITAL MANAGEMENT L P 0.09% of their portfolio | 43.2k $4.5m | Reduced -62.7k |
| Edgestream Partners, L.P. 0.15% of their portfolio | 42.9k $4.5m | Added +29.8k |
| Roubaix Capital, LLC 2.09% of their portfolio | 42.8k $4.5m | New |
| RENAISSANCE TECHNOLOGIES LLC 0.01% of their portfolio | 42.2k $4.4m | Reduced -49.7k |
| Squarepoint Ops LLC 0.01% of their portfolio | 42.0k $4.4m | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 41.9k $4.4m | Added +3.1k |
| KORNITZER CAPITAL MANAGEMENT INC /KS 0.09% of their portfolio | 40.1k $4.2m | Unchanged |
| ALGERT GLOBAL LLC 0.06% of their portfolio | 39.3k $4.1m | Reduced -73.1k |
| Ruffer LLP 0.16% of their portfolio | 38.0k $4.0m | Added +17.8k |
| RICE HALL JAMES & ASSOCIATES, LLC 0.22% of their portfolio | 37.0k $3.9m | Reduced -530 |
| FIRST NATIONAL BANK OF OMAHA 0.12% of their portfolio | 36.6k $3.8m | Added +3.9k |
| Granite Investment Partners, LLC 0.23% of their portfolio | 35.5k $3.7m | Added +16.7k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.01% of their portfolio | 35.5k $3.7m | Unchanged |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 33.7k $4.1m | Added +418 |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 33.3k $3.5m | Reduced -8.5k |
| Sterling Capital Management LLC 0.06% of their portfolio | 31.2k $3.3m | Reduced -683 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 29.3k $3.1m | Added +4.4k |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 29.0k $3.0m | Reduced -14.7k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 28.4k $3.0m | Added +160 |
| Long Road Investment Counsel, LLC 1.16% of their portfolio | 28.2k $2.9m | Unchanged |
| Quantinno Capital Management LP 0.00% of their portfolio | 28.2k $2.9m | Added +20.2k |
| NATIXIS ADVISORS, LLC 0.00% of their portfolio | 27.6k $2.9m | Reduced -3.2k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 26.3k $2.7m | Added +2.6k |
| TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY 0.02% of their portfolio | 26.1k $2.7m | Added +793 |
| Aurora Investment Counsel 1.48% of their portfolio | 25.6k $2.7m | New |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 25.4k $2.7m | First filing |
| Linden Thomas Advisory Services, LLC 0.26% of their portfolio | 25.4k $2.7m | Added +7.5k |
| Corient Private Wealth LP 0.00% of their portfolio | 24.4k $2.5m | Added +15.4k |
| Susquehanna Portfolio Strategies, LLC 0.04% of their portfolio | 23.5k $2.5m | Added +7.7k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 23.4k $2.4m | Reduced -1.5k |
| Cerity Partners LLC 0.00% of their portfolio | 23.1k $2.4m | Reduced -1.6k |
| LPL Financial LLC 0.00% of their portfolio | 22.9k $2.4m | Reduced -17.6k |