What is the 13F Pro Quality Score for DORM?

13F Pro ranks Dorman Products, Inc. (DORM) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View DORM's current score at https://13fpro.ai/research/DORM (free sign-up required for the full ranking).

Which hedge funds own the most DORM stock?

Based on the most recent Form 13F-HR filings on SEC EDGAR, the largest reported institutional holders of DORM include BlackRock,, VANGUARD PORTFOLIO MANAGEMENT, MORGAN STANLEY. Holdings are reported quarterly within 45 days of quarter-end and updated on https://13fpro.ai/research/DORM as soon as new 13F filings post.

Where does 13F Pro source DORM data?

All Dorman Products, Inc. fundamentals and ownership data come directly from SEC EDGAR. Dorman Products, Inc. files with the SEC under CIK 868780. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is DORM in?

Dorman Products, Inc. (DORM) is classified in the Industrials sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/industrials.

How often is DORM research updated on 13F Pro?

DORM's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

Dorman Products, Inc.(DORM)Stock Analysis

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13F Pro Quality Score

63.1/100

Rank #699 of 2,879 stocksTOP 25%

View Industrials peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Aug 14, 2026.

Revenue Growth

53.1/100

Profitability

74.2/100

Balance Sheet

85.7/100

Earnings Quality

82.7/100

Free Cash Flow

46.2/100

Institutional Flow

24.5/100

Revenue Scale

63.4/100

Dilution Risk

59.2/100

DORM Stock Analysis & AI Quality Score

AI stock analysis and institutional research for Dorman Products, Inc. (DORM), a Industrials sector company. 13F Pro's AI-powered ranking engine scores DORM at 63.1/100 on a 32-signal composite quality model, placing it at rank #699 of 2,879 stocks — the top 25% of the AI-ranked universe. DORM scores in the top quartile across balance sheet strength (85.7), earnings quality (82.7). Areas of concern include institutional flow (24.5), which score below median versus the broader universe. Based on the latest XBRL financial filings (Q1 2026), Dorman Products, Inc. reports quarterly revenue of $528.8M, net income of $43.6M, an operating margin of 11.1%. Top institutional holders of DORM by reported 13-F value include BlackRock,, VANGUARD PORTFOLIO MANAGEMENT, MORGAN STANLEY, based on the most recent SEC filings. DORM trades on the Nasdaq exchange and files with the SEC under CIK 868780. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate DORM daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for Dorman Products, Inc. directly from SEC EDGAR. Dorman Products, Inc.'s 13F Pro composite quality score has ranged between 54 and 70 since 2021, currently 63.1 — an improving long-term trajectory across 30 quarterly and live scoring snapshots.

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Fun facts about Dorman Products, Inc.

Quirks, history, and lore behind DORM — the kind of stuff that makes a stock memorable.

1
The Basics
U.S. industrials company · listed on Nasdaq · headquartered in Pennsylvania · serves a massive, highly fragmented market.
2
The Numbers
Annual revenue in the range of $1–2 billion, with a catalog of well over 100,000 SKUs — because apparently more is more.
3
The History
Founded in the 1970s, the company built its business on the idea that replacement parts for vehicles shouldn't require buying an entire assembly from the original manufacturer.
4
The Secret
Its whole model is reverse-engineering hard-to-find parts that dealers either discontinued or overcharge for — basically the aftermarket's answer to dealer monopolies.
5
The Lore
The company sells to the do-it-yourself and professional installer markets through major auto parts chains, and its parts often outlast the originals they replace — not that anyone admits that.
6
The Giveaway
If your car needs an aftermarket auto or heavy-duty truck part and the dealer wants a small fortune, this Colmar, Pennsylvania company probably already has it catalogued.

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Revenue

Q1 2026

$528.8M

Net Income

Q1 2026

$43.6M

Free Cash Flow

Q1 2026

$35.3M

Operating Margin

Q1 2026

11.1%

D/E Ratio

Q1 2026

0.30

AI Insight: DORM Financial Trends

Operating cash flow collapsed from $63M in Q2 2024 to just $9M-$12M in Q2-Q3 2025, signaling deteriorating working capital management despite steady revenue growth.

• Revenue grew modestly from $503M in Q2 2024 to $529M in Q1 2026, maintaining relatively stable top-line performance.

• Operating cash flow plummeted from $63M in Q2 2024 to $12M in Q3 2025, indicating severe working capital deterioration.

• Net income dropped sharply to $12M in Q4 2025 from $76M in Q3 2025, marking the weakest quarterly performance.

• Total debt declined from $477M to $440M over the period while equity expanded from $1,201M to $1,467M.

⚠ Operating income volatility with Q4 2025 showing $31M versus $106M in Q3 2025, suggesting operational inconsistency.

⚠ Cash flow generation remains well below historical levels despite revenue stability, indicating potential inventory or receivables issues.

AI Insight: DORM Ratio Trends

Dorman experienced severe margin compression in Q4 2025, with operating margin plunging from 19.4% to 5.8%.

• Operating margin collapsed from 19.4% in Q3 2025 to 5.8% in Q4 2025, the lowest level in the data set.

• ROIC declined sharply from 21.8% in Q3 2025 to 6.4% in Q4 2025, then partially recovered to 12.3% in Q1 2026.

• Debt-to-equity ratio improved steadily from 0.40 in Q2 2024 to 0.30 in Q1 2026, indicating deleveraging.

⚠ Q4 2025 margin collapse appears to be one-time given partial recovery in Q1 2026, but sustainability unclear.

⚠ TTM operating margin of 12.9% remains well below peak quarterly performance of 19.4% achieved in Q3 2025.

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Available Research

13F Pro tracks comprehensive data for Dorman Products, Inc. including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of DORM

BlackRock, Inc.
$418.2M4,007,265 sh
VANGUARD PORTFOLIO MANAGEMENT LLC
$157.0M1,504,640 sh
MORGAN STANLEY
$147.7M1,415,141 sh
VANGUARD CAPITAL MANAGEMENT LLC
$129.1M1,237,454 sh
DIMENSIONAL FUND ADVISORS LP
$114.7M1,099,352 sh
STATE STREET CORP
$114.7M1,099,272 sh
JENNISON ASSOCIATES LLC
$86.2M826,285 sh
GEODE CAPITAL MANAGEMENT, LLC
$74.4M713,186 sh
Invesco Ltd.
$66.3M635,504 sh
ROYCE & ASSOCIATES LP
$64.4M616,656 sh

Fund	Value	Shares
BlackRock, Inc.	$418.2M	4,007,265
VANGUARD PORTFOLIO MANAGEMENT LLC	$157.0M	1,504,640
MORGAN STANLEY	$147.7M	1,415,141
VANGUARD CAPITAL MANAGEMENT LLC	$129.1M	1,237,454
DIMENSIONAL FUND ADVISORS LP	$114.7M	1,099,352
STATE STREET CORP	$114.7M	1,099,272
JENNISON ASSOCIATES LLC	$86.2M	826,285
GEODE CAPITAL MANAGEMENT, LLC	$74.4M	713,186
Invesco Ltd.	$66.3M	635,504
ROYCE & ASSOCIATES LP	$64.4M	616,656

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Is DORM a good stock to buy?

13F Pro's AI-powered analysis of Dorman Products, Inc. (DORM) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Industrials sector (listed on Nasdaq). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for DORM are available on the DORM stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing.

Which hedge funds own DORM?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling DORM. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of Dorman Products, Inc.'s investment landscape.