FLY vs MNTS

For growth investors, Firefly Aerospace Inc.

(FLY) is the stronger pick with 163. 0% revenue growth year-over-year, versus -31. 6% for Momentus Inc. (MNTS). Analysts rate Firefly Aerospace Inc. (FLY) a "Buy" — based on 7 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.

Over the past 5 years, Firefly Aerospace Inc.

(FLY) delivered a total return of -42. 8%, compared to -99. 9% for Momentus Inc. (MNTS). Over 10 years, the gap is even starker: FLY returned -42. 8% versus MNTS's -99. 9%. 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), Firefly Aerospace Inc.

(FLY) is the lower-risk stock at 2. 73β versus Momentus Inc. 's 3. 48β — meaning MNTS is approximately 28% more volatile than FLY relative to the S&P 500.

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

(FLY) is pulling ahead at 163. 0% versus -31. 6% for Momentus Inc. (MNTS). On earnings-per-share growth, the picture is similar: Momentus Inc. grew EPS 90. 0% year-over-year, compared to -161. 0% for Firefly Aerospace Inc.. 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.

Firefly Aerospace Inc.

(FLY) is the more profitable company, earning -186. 6% net margin versus -1653. 1% for Momentus Inc. — meaning it keeps -186. 6% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: FLY leads at -154. 3% versus -1404. 1% for MNTS. At the gross margin level — before operating expenses — MNTS leads at 96. 9%, 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.

In this comparison, FLY (0.

2% yield) pays a dividend. MNTS does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Firefly Aerospace Inc.

(FLY) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding. Momentus Inc. (MNTS) carries a higher beta of 3. 48 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (FLY: -42. 8%, MNTS: -99. 9%), 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: FLY is a small-cap high-growth stock; MNTS is a small-cap quality compounder stock. 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.