What are the major US-listed auto suppliers?

Five major US-listed auto suppliers: (1) BorgWarner (BWA) — powertrain plus emerging EV-focused content; (2) Autoliv (ALV) — largest global airbag and seatbelt supplier; (3) Magna International (MGA) — Canadian-headquartered with body exteriors, powertrain, contract manufacturing (Magna Steyr); (4) Aptiv (APTV) — advanced safety, connected services, signal-and-power; (5) Gentex (GNTX) — auto-dimming mirrors niche dominance.

How does EV transition affect auto suppliers?

Multi-year ICE-to-EV transition reshapes auto supplier content economics. EV-focused content (battery management, electric drivetrains, power electronics) grows; ICE-focused content (transmissions, fuel injection) declines. Different suppliers face different transition profiles. BorgWarner's e-mobility transformation versus pure-ICE suppliers represents the transition spectrum. Reading EV content disclosure drives positioning.

What is content per vehicle expansion?

Multi-year content per vehicle expansion through technology adoption drives auto supplier organic revenue growth above underlying unit production. Advanced driver assistance systems (ADAS), infotainment plus connectivity, electrification components, advanced safety systems each add content. Total content per vehicle grows 3-5% annually above unit growth. Reading content per vehicle disclosure plus technology platform wins drives institutional positioning.

How does customer concentration affect suppliers?

Auto suppliers face substantial customer concentration with top customers (GM, Ford, Stellantis, Toyota, Honda, Volkswagen, BMW, Mercedes) representing 20-30%+ of revenue at major suppliers. Multi-year customer relationships plus platform wins (next-generation vehicle programs) drive operator economics. Customer-specific platform losses produce dramatic revenue impact. Reading customer concentration disclosure plus platform win data drives positioning.

How do UAW contracts affect auto suppliers?

Multi-year UAW master contracts plus international labor cost dynamics drive operator margins. UAW contracts at Detroit Three automakers (GM, Ford, Stellantis) flow through to US-domiciled suppliers via cost increases. Multi-year supplier consolidation plus operational restructuring partially offsets labor cost pressure. Multi-year automation investment supports margin maintenance. Reading labor cost disclosure drives institutional positioning.

What signals auto supplier cycle inflections?

Four signals: (1) global vehicle production trajectory plus North American/European/Chinese mix; (2) EV penetration data plus EV-specific content win disclosure; (3) content per vehicle expansion trends; (4) labor contract negotiations plus material cost cycles. Concentrated 13F changes around these signals reveal manager cycle reading.

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Auto Supplier 13Fs: BorgWarner, Autoliv, Magna Decoder

BorgWarner, Autoliv, Magna International, Aptiv, and Gentex anchor US-listed auto supplier 13F positioning. EV transition cycles, content-per-vehicle dynamics, OEM customer concentration, and labor cost dynamics drive distinctive institutional patterns.

By Sarah Mitchell, Education Editor

PublishedMay 15, 2026UpdatedMay 15, 2026

US-listed auto supplier equities form a distinctive cyclical-industrial corner of institutional 13F positioning. BorgWarner, Autoliv (ALV), Magna International, Aptiv (APTV), and Gentex (GNTX) anchor the cohort. Multi-year EV transition cycles, content-per-vehicle dynamics, OEM customer concentration, and labor cost trajectories drive distinctive institutional patterns. Reading auto supplier 13F positioning requires understanding the EV-transition framework plus the multi-year content-per-vehicle and customer cycle dynamics.

The auto supplier business model

Auto suppliers face four primary economic drivers:

EV transition cycles. Multi-year ICE-to-EV transition reshapes auto supplier content. EV-focused content (battery management, electric drivetrains, power electronics) grows; ICE content (transmissions, fuel injection) declines.
Content per vehicle. Multi-year content per vehicle expansion through technology adoption (ADAS, infotainment, electrification) drives organic revenue growth above unit production.
OEM customer concentration. Auto suppliers face substantial customer concentration with top customers representing 20-30%+ of revenue. Multi-year customer relationships plus platform wins drive operator economics.
Labor cost dynamics. Multi-year UAW master contracts plus international labor cost dynamics drive operator margins.

Major auto supplier names

BorgWarner (BWA)

Diversified across powertrain (ICE plus electric) plus emerging EV-focused content. Multi-year e-mobility strategic transformation. Multi-year operational discipline.

Autoliv (ALV)

Largest global airbag and seatbelt supplier. Multi-decade safety system franchise plus emerging ADAS sensor opportunities.

Magna International (MGA)

Diversified body exteriors, powertrain, seating, contract manufacturing (Magna Steyr). Canadian-headquartered global operations.

Aptiv (APTV)

Advanced safety plus connected services plus signal-and-power solutions. Multi-year ADAS and autonomous driving technology focus.

Gentex (GNTX)

Auto-dimming mirrors plus emerging electronic and digital products. Multi-decade niche dominance.

How institutional managers position around auto suppliers

Three patterns:

Pattern 1: EV-transition concentration

BWA-concentrated active manager positions reflect EV transition technology positioning thesis.

Pattern 2: ADAS technology positioning

APTV-concentrated active manager positions reflect ADAS and autonomous driving technology thesis.

Pattern 3: Niche-dominance positioning

GNTX-concentrated active manager positions reflect niche-dominance auto-dimming mirror franchise thesis.

How to read auto supplier 13F positioning

Three rules:

Rule 1: Identify ICE-vs-EV content mix

Each supplier's EV-focused content mix determines transition exposure.

Rule 2: Watch content-per-vehicle disclosure

Multi-year content per vehicle expansion drives organic growth.

Rule 3: Cross-check customer concentration

Top customer concentration plus platform wins drive operator economics.

What auto supplier positioning signals

EV-transition conviction. Concentrated BWA positions signal EV transition technology thesis.
ADAS conviction. Concentrated APTV positions signal ADAS and autonomous driving thesis.
Niche-dominance conviction. Concentrated GNTX positions signal niche-dominance franchise thesis.

For real-time tracking of auto supplier 13F activity, see the institutional signals feed.

Sarah MitchellEducation Editor

Investment Education Editor at 13F Insight. Breaks down complex institutional data into actionable insights for individual investors.