TransDigm (TDG) Stock Forecast & Price Target

TransDigm Group is supported by a durable aftermarket-heavy model, with roughly 53% of FY26E net sales from aftermarket sales that historically carry higher margins and greater resilience, while commercial transport and defense demand remain underpinned by strong fleet utilization, delayed aircraft deliveries, and rising government spending. Its proprietary, sole-source content across power and control, airframes, and defense platforms creates pricing power and recurring revenue, evidenced by commercial aftermarket growth recovering to about 17% in calendar 2Q26 and defense sales growing 13% organically in FY25. The outlook is further strengthened by disciplined, acquisitive capital allocation and leverage, as management expects more than $10B of remaining M&A capacity even with gross debt near $34B, with recent acquisitions and a robust pipeline offering additional upside to sales and EBITDA margins.

TransDigm Group is viewed negatively because its historically durable aftermarket model now faces slower growth, with commercial aerospace aftermarket growth lagging peers at 12.3% versus 16.8% and margins appearing to have peaked near 52%-53% after a roughly 100 bp step-down. Its leverage-driven capital allocation also looks increasingly fragile, as FY25 special dividends totaled $9.63B and net debt/TTM EBITDA stood at 5.8x, leaving the company dependent on cheap financing and accretive deals to sustain returns. At the same time, tighter DOJ and Pentagon scrutiny, the revived “Right to Repair” risk, and acquisition setbacks like the Stellant withdrawal threaten the M&A playbook that has powered TransDigm’s value creation.