Thematic Exposure -- 7/10
Cummins is the #1 independent diesel engine maker (~33% NA Class 8, a 3-4 player oligopoly) and
co-leader with Caterpillar in the >2MW data-center genset duopoly. Oligopoly gate PASS on both
core themes. Power Systems is the fastest-growing, highest-margin segment riding data-center power
demand. Held from 8-10 because the largest revenue segment (Distribution, 36.8%) is a captive channel
rather than a share-dominant theme, and Components/aftertreatment is fragmented.
Weight: 35%
Oligopoly Hard Gate: PASS
~33% NA Class 8 (#1 independent, 3-4 player oligopoly). Co-leader in >2MW data-center gensets.
NA Class 8 Share
~33%
#1 independent since 2007
Power Systems Q1'26 EBITDA Margin
29.5%
Record margin -- data-center driven
Top-5 Revenue Concentration
~45.5%
Of total company revenue
Distribution Share of Revenue
36.8%
Captive channel, not a share theme
NA Class 8 Engine -- #1 Independent (~33%)
3-4 Player Oligopoly -- Design-In Lock-In -- #1 Independent Since 2007
Cummins has held ~33% of the NA Class 8 engine market since 2007 as the #1 independent supplier.
A 3-4 player oligopoly with PACCAR/DAF, Daimler/Detroit Diesel, and Navistar. Design-in and
emissions-certification lock-in prevent 12-month customer substitution.
Data-Center Power -- Duopoly With Caterpillar
>2MW Genset Duopoly -- Record 29.5% Q1'26 EBITDA Margin -- Secular Data-Center Demand
Cummins and Caterpillar form a >2MW data-center genset duopoly. Power Systems is the
fastest-growing, highest-margin segment -- record 29.5% Q1'26 EBITDA margin. Secular data-center
power demand is the structural growth driver. Top-5 players control ~45.5% of total revenue.
Distribution and Components -- Captive Channel, Fragmented
Distribution 36.8% of Revenue -- Components/Aftertreatment 6-7 Players -- Not Share-Dominant
Distribution (36.8% of revenue) is a captive service/parts/rental channel -- a quality aftermarket
business but not a competitive-share theme. Components/aftertreatment sits in a fragmented 6-7
player market where CMI is not dominant.
Score Rationale
| Factor | Assessment |
|---|---|
| NA Class 8 engine oligopoly | ~33% share, #1 independent, 3-4 player market, design-in lock-in |
| Data-center genset duopoly | Co-leader with CAT in >2MW, record 29.5% EBITDA margin, secular demand |
| Distribution (largest segment) | 36.8% of revenue -- captive channel, not a share-dominant theme |
| Components/aftertreatment | Fragmented 6-7 player market, CMI not dominant |
7/10 — Oligopoly gate PASS on both core
themes: ~33% NA Class 8 (#1 independent in a 3-4 player oligopoly) and co-leader with Caterpillar in
the >2MW data-center genset duopoly. Power Systems is the fastest-growing, highest-margin segment with
a record 29.5% Q1'26 EBITDA margin riding secular data-center power demand.
Held from 8-10 because:
(a) The largest revenue segment (Distribution, 36.8%) is a captive channel -- a quality aftermarket business but not a competitive-share theme that drives thematic re-rating.
(b) Components/aftertreatment is fragmented -- a 6-7 player market where CMI is not dominant, diluting the oligopoly narrative across the full business.
Held from 8-10 because:
(a) The largest revenue segment (Distribution, 36.8%) is a captive channel -- a quality aftermarket business but not a competitive-share theme that drives thematic re-rating.
(b) Components/aftertreatment is fragmented -- a 6-7 player market where CMI is not dominant, diluting the oligopoly narrative across the full business.
Data sourced from Daloopa.