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Compare · ACM vs TDG

ACM vs TDG

Side-by-side comparison of AECOM (ACM) and Transdigm Group Incorporated (TDG): market cap, price performance, sector, and recent activity on the wire.

Summary

  • ACM operates in Consumer Discretionary, while TDG operates in Industrials - the two are in different parts of the market.
  • TDG is the larger of the two at $67.93B, about 7.7x ACM ($8.78B).
  • Over the past year, ACM is down 39.7% and TDG is down 24.0% - TDG leads by 15.7 points.
  • TDG has been more active in the news (8 items in the past 4 weeks vs 6 for ACM).
  • TDG has more recent analyst coverage (25 ratings vs 13 for ACM).
PerformanceACM-39.74%TDG-24.00%
2025-07-18+0.00%2026-07-17
MetricACMTDG
Company
AECOM
Transdigm Group Incorporated
Price
$68.30-2.34%
$1213.96-1.36%
Market cap
$8.78B
$67.93B
1M return
-3.90%
-6.73%
1Y return
-39.74%
-24.00%
Industry
Military/Government/Technical
Military/Government/Technical
Exchange
NYSE
NYSE
IPO
2007
2006
News (4w)
6
8
Recent ratings
13
25
ACM

AECOM

AECOM, together with its subsidiaries, delivers professional services to program and construction management in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. It operates through three segments: Americas, International, and AECOM Capital. The company engages in planning, consulting, architectural, engineering, and construction management services for commercials and governments clients. It also invests in and develops real estate projects. In addition, the company provides building construction and energy, as well as infrastructure and industrial construction services. It serves transportation, water, government, facilities, environmental, and energy sectors. The company was formerly known as AECOM Technology Corporation and changed its name to AECOM in January 2015. AECOM was founded in 1980 and is headquartered in Los Angeles, California.

TDG

Transdigm Group Incorporated

TransDigm Group Incorporated designs, produces, and supplies aircraft components in the United States and internationally. Its Power & Control segment offers mechanical/electro-mechanical actuators and controls, ignition systems and engine technology, specialized pumps and valves, power conditioning devices, specialized AC/DC electric motors and generators, batteries and chargers, databus and power controls, sensor products, switches and relay panels, hoists, winches and lifting devices, and cargo loading and handling systems. This segment serves engine and power system and subsystem suppliers, airlines, third party maintenance suppliers, military buying agencies, and repair depots. The company's Airframe segment provides engineered latching and locking devices, engineered rods, engineered connectors and elastomer sealing solutions, cockpit security components and systems, cockpit displays, aircraft audio systems, lavatory components, seat belts and safety restraints, engineered and customized interior surfaces and related components, thermal protection and insulation products, lighting and control technology, and parachutes. This segment serves airframe manufacturers, cabin system and subsystem suppliers, airlines, third party maintenance suppliers, military buying agencies, and repair depots. Its Non-aviation segment offers headsets for high-noise, medium-noise, and dismounted applications; seat belts and safety restraints for ground transportation applications; hydraulic/electromechanical actuators and fuel valves for land based gas turbines; refueling systems for heavy equipment used in mining, construction, and other industries; and turbine controls for the energy and oil and gas markets. This segment serves off-road vehicle and subsystem suppliers, child restraint system suppliers, and satellite and space system suppliers; and manufacturers of heavy equipment. TransDigm Group Incorporated was founded in 1993 and is based in Cleveland, Ohio.

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