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DORM

Dorman Products, Inc.

Company with tickers: DORM

CIK
868780
CUSIP
258278100
Shares Outstanding
29,882,789
13F Activity (30d)
93 filings 93 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 283
Total Value: $1,279,388,204
Total Shares: 12,259,375
Showing 1–100 of 285 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 283 13F filers · Δ vs Dec 31, 2025
Top Holder
10.1%
Sep 2023 → Mar 2026 · range 10.1% – 17.0%
−0.9 pts
Top 5
33.7%
Sep 2023 → Mar 2026 · range 32.8% – 47.4%
+0.8 pts
Top 10
49.7%
Sep 2023 → Mar 2026 · range 49.2% – 60.7%
+0.5 pts
HHI
354
Sep 2023 → Mar 2026 · range 342 – 645
Broadly held+12

Quarterly Activity

vs Dec 31, 2025
New
49
Increased
100
Decreased
103
Sold Out
73
Unchanged
31
Holder count: -24
Institutional value: -7.0%
Shares held: +9.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Showing 100 of 285
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Holder Value (USD) % of 13F Shares Open