AER vs WLFC vs AL vs FLY vs BA

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. 7x trailing P/E (8. 3x 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. 7x versus The Boeing Company at 97. 0x. On forward P/E, AerCap Holdings N. V. is actually cheaper at 8. 3x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Willis Lease Finance Corporation wins at 0. 21x versus Air Lease Corporation's 0. 79x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Willis Lease Finance Corporation (WLFC) delivered a total return of +391.

7%, compared to -34. 8% for Firefly Aerospace Inc. (FLY). Over 10 years, the gap is even starker: WLFC returned +873. 0% 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 The Boeing Company — 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: Air Lease Corporation grew EPS 179. 0% year-over-year, compared to -161. 0% for Firefly Aerospace Inc.. Over a 3-year CAGR, WLFC leads at 29. 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 — WLFC leads at 65. 7%, 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, Willis Lease Finance Corporation (WLFC) is the more undervalued stock at a PEG of 0. 21x versus Air Lease Corporation's 0. 79x. 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. 3x forward P/E versus 14. 9x for Willis Lease Finance Corporation — 6. 6x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for AER: 15. 5% to $165. 00.

All stocks in this comparison pay dividends.

Air Lease Corporation (AL) offers the highest yield at 1. 3%, versus 0. 2% for The Boeing Company (BA).

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, +146. 1% 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: +146. 1%, 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; WLFC is a small-cap high-growth stock; AL is a small-cap deep-value stock; FLY is a small-cap high-growth stock; BA is a mid-cap high-growth stock. AER, AL pay a dividend while WLFC, FLY, BA 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.