AER vs FTAI vs AL vs GATX vs FLY

For growth investors, Firefly Aerospace Inc.

(FLY) is the stronger pick with 163. 0% revenue growth year-over-year, versus 2. 4% for AerCap Holdings N. V. (AER). AerCap Holdings N. V. (AER) offers the better valuation at 6. 8x trailing P/E (8. 4x forward), making it the more compelling value choice. Analysts rate AerCap Holdings N. V. (AER) a "Buy" — based on 25 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, AerCap Holdings N.

V. (AER) is the cheapest at 6. 8x versus FTAI Aviation Ltd. at 57. 9x. On forward P/E, AerCap Holdings N. V. is actually cheaper at 8. 4x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Air Lease Corporation wins at 0. 79x versus GATX Corporation's 1. 08x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, FTAI Aviation Ltd.

(FTAI) delivered a total return of +1073%, compared to -34. 8% for Firefly Aerospace Inc. (FLY). Over 10 years, the gap is even starker: FTAI returned +33. 8% versus FLY's -34. 8%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Air Lease Corporation (AL) is the lower-risk stock at 0.

33β versus Firefly Aerospace Inc. 's 2. 90β — meaning FLY is approximately 769% more volatile than AL relative to the S&P 500. On balance sheet safety, Firefly Aerospace Inc. (FLY) carries a lower debt/equity ratio of 26% versus 10% for FTAI Aviation Ltd. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Firefly Aerospace Inc.

(FLY) is pulling ahead at 163. 0% versus 2. 4% for AerCap Holdings N. V. (AER). On earnings-per-share growth, the picture is similar: FTAI Aviation Ltd. grew EPS 1538% year-over-year, compared to -161. 0% for Firefly Aerospace Inc.. Over a 3-year CAGR, FTAI leads at 51. 4% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

AerCap Holdings N.

V. (AER) is the more profitable company, earning 45. 8% net margin versus -186. 6% for Firefly Aerospace Inc. — meaning it keeps 45. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AER leads at 51. 9% versus -154. 3% for FLY. At the gross margin level — before operating expenses — AER leads at 59. 8%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential.

By this metric, Air Lease Corporation (AL) is the more undervalued stock at a PEG of 0. 79x versus GATX Corporation's 1. 08x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, AerCap Holdings N. V. (AER) trades at 8. 4x forward P/E versus 38. 0x for FTAI Aviation Ltd. — 29. 5x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for GATX: 19. 7% to $220. 00.

All stocks in this comparison pay dividends.

GATX Corporation (GATX) offers the highest yield at 1. 4%, versus 0. 2% for Firefly Aerospace Inc. (FLY).

For long-horizon retirement investors, Air Lease Corporation (AL) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

33), 1. 3% yield, +140. 2% 10Y return). Firefly Aerospace Inc. (FLY) carries a higher beta of 2. 90 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (AL: +140. 2%, FLY: -34. 8%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Industrials sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: AER is a mid-cap deep-value stock; FTAI is a mid-cap high-growth stock; AL is a small-cap deep-value stock; GATX is a small-cap quality compounder stock; FLY is a small-cap high-growth stock. AER, AL, GATX pay a dividend while FTAI, FLY do not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.