"You get what you pay for" often applies to expensive stocks with best-in-class business models and execution. While their quality can sometimes justify the premium, they typically experience elevated volatility during market downturns when expectations change.

Finding the right balance between price and quality can challenge even the most skilled investors. Luckily for you, we started StockStory to help you identify the real opportunities. That said, here is one high-flying stock with strong fundamentals and two where the price is not right.

Two High-Flying Stocks to Sell:

AeroVironment (AVAV)

Forward P/E Ratio: 64.2x

Focused on the future of autonomous military combat, AeroVironment (NASDAQ: AVAV) specializes in advanced unmanned aircraft systems and electric vehicle charging solutions.

Why Do We Think Twice About AVAV?

1. Costs have risen faster than its revenue over the last five years, causing its operating margin to decline by 9.4 percentage points
2. 25.6 percentage point decline in its free cash flow margin over the last five years reflects the company’s increased investments to defend its market position
3. Push for growth has led to negative returns on capital, signaling value destruction

At $273.69 per share, AeroVironment trades at 64.2x forward P/E. Check out our free in-depth research report to learn more about why AVAV doesn’t pass our bar.

Boeing (BA)

Forward P/E Ratio: 255.4x

One of the companies that forms a duopoly in the commercial aircraft market, Boeing (NYSE: BA) develops, manufactures, and services commercial airplanes, defense products, and space systems.

Why Are We Out on BA?

1. Underwhelming unit sales over the past two years show it’s struggled to increase its sales volumes and had to rely on price increases
2. Cash-burning history makes us doubt the long-term viability of its business model
3. Negative earnings profile makes it challenging to secure favorable financing terms from lenders

Boeing is trading at $180.22 per share, or 255.4x forward P/E. Dive into our free research report to see why there are better opportunities than BA.

One High-Flying Stock to Buy:

HEICO (HEI)

Forward P/E Ratio: 58.5x

Founded in 1957, HEICO (NYSE: HEI) manufactures and services aerospace and electronic components for commercial aviation, defense, space, and other industries.

Why Should You Buy HEI?

1. Core business can prosper without any help from acquisitions as its organic revenue growth averaged 9.5% over the past two years
2. Earnings growth has trumped its peers over the last two years as its EPS has compounded at 26.2% annually
3. Strong free cash flow margin of 17.5% enables it to reinvest or return capital consistently

HEICO’s stock price of $300.45 implies a valuation ratio of 58.5x forward P/E. Is now a good time to buy? Find out in our full research report, it’s free for active Edge members.

Stocks We Like Even More

Your portfolio can’t afford to be based on yesterday’s story. The risk in a handful of heavily crowded stocks is rising daily.

The names generating the next wave of massive growth are right here in our Top 5 Strong Momentum Stocks for this week. This is a curated list of our High Quality stocks that have generated a market-beating return of 244% over the last five years (as of June 30, 2025).

Stocks that made our list in 2020 include now familiar names such as Nvidia (+1,326% between June 2020 and June 2025) as well as under-the-radar businesses like the once-micro-cap company Kadant (+351% five-year return). Find your next big winner with StockStory today for free. Find your next big winner with StockStory today. Find your next big winner with StockStory today

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