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DORM

Dorman Products, Inc.

Company with tickers: DORM

CIK
868780
CUSIP
258278100
Shares Outstanding
29,882,789
13F Activity (30d)
255 filings 255 filers
Holders: 317
Total Value: $2,717,370,328
Total Shares: 26,038,430
Showing 1–100 of 319 holdings by value · page 1 of 4

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 317 13F filers · Δ vs Dec 31, 2025
Top Holder
15.4%
Jun 2023 → Mar 2026 · range 14.9% – 17.2%
+0.5 pts
Top 5
35.6%
Jun 2023 → Mar 2026 · range 35.6% – 47.4%
−3.4 pts
Top 10
50.5%
Jun 2023 → Mar 2026 · range 50.5% – 60.7%
−2.3 pts
HHI
436
Jun 2023 → Mar 2026 · range 436 – 645
Broadly held −49

Quarterly Activity

vs Dec 31, 2025
New
41
Increased
120
Decreased
120
Sold Out
72
Unchanged
36
Holder count: -31
Institutional value: -17.5%
Shares held: -2.6%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Large Mawer Investment Management Ltd. +163,941 255,190
Mid GENEVA CAPITAL MANAGEMENT LLC +159,023 564,356
Mid ROYCE & ASSOCIATES LP +117,697 616,656
Mega AMERIPRISE FINANCIAL INC +95,207 472,734
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC +87,425 132,004

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large FULLER & THALER ASSET MANAGEMENT, INC. −573,564 307,934
Mega PRICE T ROWE ASSOCIATES INC /MD/ −178,688 332,404
Mega Invesco Ltd. −127,955 635,504
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. −88,581 110,536
Mid ALGERT GLOBAL LLC −73,065 39,280

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 1,504,640 $157,024,230
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,237,454 $129,140,699
Mid Bragg Financial Advisors, Inc 242,296 $25,286,010
Mega VANGUARD FIDUCIARY TRUST CO 192,867 $20,127,600
Small Roubaix Capital, LLC 42,811 $4,467,755

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 2,971,733 $366,087,785
Mega NORGES BANK 336,784 $41,488,420
Large Clark Capital Management Group, Inc. 332,523 $40,963,508
Mid Atom Investors LP 50,191 $6,183,029
Mega JANE STREET GROUP, LLC 45,601 $5,617,586
Filter: New 41 Increased 120 Reduced 120 Sold out 72 Unchanged 36
100 of 100 shown
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $418,198,167 15.39% 4,007,265
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $157,024,230 5.78% 1,504,640
Mega MORGAN STANLEY $147,684,108 5.43% 1,415,141
Mega VANGUARD CAPITAL MANAGEMENT LLC $129,140,699 4.75% 1,237,454
Mega DIMENSIONAL FUND ADVISORS LP $114,728,373 4.22% 1,099,352
Mega STATE STREET CORP $114,720,025 4.22% 1,099,272
Mega JENNISON ASSOCIATES LLC $86,231,102 3.17% 826,285
Mega GEODE CAPITAL MANAGEMENT, LLC $74,428,090 2.74% 713,186
Mega Invesco Ltd. $66,321,193 2.44% 635,504
Mid ROYCE & ASSOCIATES LP $64,354,220 2.37% 616,656
Mid GENEVA CAPITAL MANAGEMENT LLC $58,896,192 2.17% 564,356
Large GW&K Investment Management, LLC $53,608,479 1.97% 513,688
Mega AMERIPRISE FINANCIAL INC $49,334,519 1.82% 472,734
Mega WELLINGTON MANAGEMENT GROUP LLP $48,168,399 1.77% 461,560
Large WESTFIELD CAPITAL MANAGEMENT CO LP $48,139,389 1.77% 461,282
Large Fiera Capital Corp $46,220,730 1.70% 442,897
Mega NORTHERN TRUST CORP Bank $44,349,448 1.63% 424,966
Mega T. Rowe Price Investment Management, Inc. $44,004,228 1.62% 421,658
Mega BANK OF AMERICA CORP /DE/ Bank $42,785,823 1.57% 409,983
Mega VICTORY CAPITAL MANAGEMENT INC $41,547,698 1.53% 398,119
Mega PRICE T ROWE ASSOCIATES INC /MD/ $34,689,680 1.28% 332,404
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $34,480,648 1.27% 330,401
Large FULLER & THALER ASSET MANAGEMENT, INC. $32,135,992 1.18% 307,934
Large SILVERCREST ASSET MANAGEMENT GROUP LLC $29,532,940 1.09% 282,991
Large Mawer Investment Management Ltd. $26,631,628 0.98% 255,190
Small SOUTHERNSUN ASSET MANAGEMENT, LLC $25,726,931 0.95% 246,521
Mid Bragg Financial Advisors, Inc $25,286,010 0.93% 242,296
Large LOOMIS SAYLES & CO L P $25,250,945 0.93% 241,960
Large BESSEMER GROUP INC $22,843,147 0.84% 218,888
Mega VANGUARD FIDUCIARY TRUST CO Bank $20,127,600 0.74% 192,867
Mega ROYAL BANK OF CANADA Bank $20,035,133 0.74% 191,981
Mega GOLDMAN SACHS GROUP INC $17,840,967 0.66% 170,956
Mega Bank of New York Mellon Corp Bank $17,348,384 0.64% 166,236
Mega ENVESTNET ASSET MANAGEMENT INC $16,142,717 0.59% 154,683
Mega UBS Group AG $15,694,908 0.58% 150,392
Mega PRINCIPAL FINANCIAL GROUP INC $15,638,553 0.58% 149,852
Mid Leeward Investments, LLC - MA $15,617,265 0.57% 149,648
Mid Tributary Capital Management, LLC $15,238,542 0.56% 146,019
Mega D. E. Shaw & Co., Inc. $15,026,065 0.55% 143,983
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $13,775,937 0.51% 132,004
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $11,535,536 0.42% 110,536
Small KTF INVESTMENTS, LLC $10,975,854 0.40% 105,173
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $10,698,361 0.39% 102,514
Large Public Sector Pension Investment Board Pension $10,382,150 0.38% 99,484
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $10,002,279 0.37% 95,844
Large First Eagle Investment Management, LLC $9,532,451 0.35% 91,342
Mega CITADEL ADVISORS LLC $9,270,820 0.34% 88,835
Mega MILLENNIUM MANAGEMENT LLC $9,147,362 0.34% 87,652
Small Pembroke Management, LTD $9,091,947 0.33% 87,121
Large WCM INVESTMENT MANAGEMENT, LLC $8,934,259 0.33% 85,610
Mega NORDEA INVESTMENT MANAGEMENT AB $8,639,233 0.32% 82,783
Mega RHUMBLINE ADVISERS $7,828,461 0.29% 75,014
Mid NICHOLAS COMPANY, INC. $7,776,802 0.29% 74,519
Large TEACHER RETIREMENT SYSTEM OF TEXAS Pension $7,252,602 0.27% 69,496
Mega JPMORGAN CHASE & CO $6,992,327 0.26% 67,002
Small Summit Creek Advisors LLC $6,775,155 0.25% 64,921
Mega Legal & General Group Plc $6,749,168 0.25% 64,672
Mega FIRST TRUST ADVISORS LP $6,487,121 0.24% 62,161
Mega WELLS FARGO & COMPANY/MN $6,460,613 0.24% 61,907
Mid AMERICAN CAPITAL MANAGEMENT INC $6,306,996 0.23% 60,435
Mega Nuveen, LLC $6,068,220 0.22% 58,147
Large Qube Research & Technologies Ltd $5,974,818 0.22% 57,252
Mid CenterBook Partners LP $5,823,183 0.21% 55,799
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $5,642,533 0.21% 54,068
Large PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO Pension $5,548,299 0.20% 53,165
Large SEI INVESTMENTS CO $5,425,884 0.20% 51,992
Mega Swiss National Bank Bank $5,343,232 0.20% 51,200
Small Bridge City Capital, LLC $4,888,952 0.18% 46,847
Mid SNYDER CAPITAL MANAGEMENT L P $4,505,951 0.17% 43,177
Mid Edgestream Partners, L.P. $4,477,044 0.16% 42,900
Small Roubaix Capital, LLC $4,467,755 0.16% 42,811
Large RENAISSANCE TECHNOLOGIES LLC $4,403,992 0.16% 42,200
Large Squarepoint Ops LLC $4,381,972 0.16% 41,989
Large STATE OF WISCONSIN INVESTMENT BOARD $4,370,596 0.16% 41,880
Mid KORNITZER CAPITAL MANAGEMENT INC /KS $4,181,183 0.15% 40,065
Mid ALGERT GLOBAL LLC $4,099,260 0.15% 39,280
Mid Ruffer LLP $3,966,827 0.15% 38,011
Mid RICE HALL JAMES & ASSOCIATES, LLC $3,863,094 0.14% 37,017
Mid FIRST NATIONAL BANK OF OMAHA Bank $3,823,750 0.14% 36,640
Mid Granite Investment Partners, LLC $3,709,371 0.14% 35,544
Large Universal- Beteiligungs- und Servicegesellschaft mbH $3,705,927 0.14% 35,511
Mega ALLIANCEBERNSTEIN L.P. $3,513,905 0.13% 33,671
Mega RAYMOND JAMES FINANCIAL INC $3,477,587 0.13% 33,323
Mid Sterling Capital Management LLC $3,251,857 0.12% 31,160
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $3,055,347 0.11% 29,277
Large Russell Investments Group, Ltd. $3,030,195 0.11% 29,036
Large PRUDENTIAL FINANCIAL INC $2,966,954 0.11% 28,430
Small Long Road Investment Counsel, LLC $2,948,170 0.11% 28,250
Large Quantinno Capital Management LP $2,941,282 0.11% 28,184
Large NATIXIS ADVISORS, LLC $2,885,345 0.11% 27,648
Mega DEUTSCHE BANK AG\ Bank $2,745,710 0.10% 26,310
Large TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY Pension $2,727,238 0.10% 26,133
Micro Aurora Investment Counsel $2,672,868 0.10% 25,612
Mega VANGUARD ASSET MANAGEMENT, Ltd $2,654,187 0.10% 25,433
Mid Linden Thomas Advisory Services, LLC $2,651,161 0.10% 25,404
Large Corient Private Wealth LLC $2,542,313 0.09% 24,361
Mid Susquehanna Portfolio Strategies, LLC $2,454,129 0.09% 23,516
Large CANADA LIFE ASSURANCE Co Insurance $2,447,033 0.09% 23,448
Large Cerity Partners LLC $2,406,123 0.09% 23,056
Mega LPL Financial LLC $2,385,878 0.09% 22,862
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