Plenty of investors who bought Peloton at its peak could describe the product in detail, and most of them probably liked it. Shares traded around $160 in December 2020.

By September 2022, the exercise equipment company was around $10 a share. Knowing the brand was never the same thing as knowing the business.

What a Familiar Product Doesn't Tell You About the Stock

"Buy what you know" is common advice, and the appeal is obvious: you can picture the product, you've used the service, the name feels safe.

What that feeling leaves out is everything an investor actually needs to know: how fast revenue is growing, how much debt sits on the balance sheet, how many competitors have arrived, and how much of the good news the share price already reflects.

Two people can agree that a treadmill is well built, or that a streaming catalog is excellent, and still own completely different investments depending on what they paid. The product review and the investment case are separate questions, and one doesn't answer the other.

The companies below share a pattern. Most saw a burst of demand during the COVID-19 period, and several were treated as if that burst were the new baseline. Here are the moves, with figures as of September 2022:

CompanyReported move
DocuSignDown more than 60% year to date
Bed Bath & BeyondDown almost 50% in 2022
Robinhood MarketsDown about 44% year to date
PelotonAround $160 a share in Dec. 2020; around $10
NetflixAround $600 a share in November; around $225

Peloton Grew Fast, Then Had Too Much Inventory

Peloton's problem was partly its own success. When gyms closed, demand for connected exercise equipment surged, and the company scaled up to meet it.

When members went back to the office and back to the gym, it was left with excess inventory. A recall of its treadmills added another drag on revenue.

Building capacity for a demand spike that turns out to be temporary is one of the harder things for an outside investor to spot, because the sales figures look excellent right up until they don't.

Netflix Recorded Its First Subscriber Losses as Rivals Piled In

Netflix invented the category most of its competitors are now in. Original series, a deep movie library, everything on demand: for years it had the space largely to itself.

Then the streaming sector filled up, and being first didn't keep anyone out. In 2022 the company posted two consecutive quarters of subscriber losses, a first in its history. The stock, around $600 a share in November, sat near $225.

DocuSign Lost Its Growth Rate and Its CEO

Electronic signatures became essential when offices emptied out, and DocuSign's growth reflected it. The slowdown that followed hit the share price accordingly, down more than 60% year to date, and in the summer of 2022 the company's CEO resigned.

A chief executive's departure alongside decelerating growth is exactly the sort of detail a purchase made on name recognition would never turn up.

Shopify and Wayfair Both Depended on the Housebound Shopper

These two ran on similar fuel. Shopify sells the tools businesses use to operate: marketing, inventory, payments, shipping. It grew as small merchants scrambled to reach customers online. Wayfair sells furniture and home goods, and it grew while people stuck at home redecorated.

Both then faced the same reversal. Online shopping cooled as people returned to offices, and inflation made shoppers cautious about discretionary spending.

Wayfair's sales slowed over several quarters and the company moved to cut costs, including laying off 5% of its workforce.

Coinbase's Business Rises and Falls With Crypto Prices

Coinbase helps investors buy, sell, and hold cryptocurrency. That makes it a leveraged bet on interest in crypto itself. As Bitcoin, Ethereum, and other coins fell in value, traders pulled back from crypto and from the companies built around it.

Which is the argument for looking past the company to what it actually sells. A platform's fortunes are tied to the volume flowing through it, so an investor buying the platform is, indirectly, buying the market it serves.

Robinhood's Trading Boom Faded After Restrictions and a Data Breach

Robinhood was the app of choice for the day traders who appeared during pandemic lockdowns and layoffs. Its momentum slowed the following year after a series of problems, including restrictions it placed on stock trading.

The company later announced employee layoffs and settled a class-action lawsuit tied to a 2020 data breach. Shares were down about 44% for the year.

Here the familiarity trap is unusually direct: many people who owned the stock first knew the company as the place they placed trades. Being a satisfied customer gives you no visibility into a firm's legal exposure or its cost structure.

Bed Bath & Beyond and AMC Rose on Message-Board Attention

Both of these got a lift from social media buzz rather than from results, and both were dealing with serious operating problems underneath.

  • Bed Bath & Beyond announced it would close 150 stores nationwide and cut its workforce by 20%. Trading volume spiked while the meme-stock crowd was paying attention, and by the end of it the stock had given the gains back, sitting almost 50% lower in 2022.
  • AMC Entertainment also caught the message-board wave. Then the industry pressures reasserted themselves: a summer movie season thinned by pandemic production delays, fewer moviegoers coming back, and a heavy debt load that gets more expensive to carry when interest rates rise.

None of that online enthusiasm changed store counts, headcount, ticket sales, or interest expense.

Why Employer Stock Concentrates Risk

No company is more familiar than the one that signs your paycheck, and shares or options are a genuine benefit in a compensation package. The catch is concentration.

If a large share of a portfolio sits in one employer and something goes wrong at that employer, the job and the savings take the hit at the same time.

Selling some of it and buying other investments is how holders spread that risk. A few practical constraints come first, though. Many companies limit when employees can sell, or how much, and human resources or another internal contact is usually the source for those rules.

Vesting schedules and trading windows can also affect timing, and the tax treatment of equity compensation varies by how the shares were granted, details that sit outside the company's stock price entirely.

The Pattern Across All Nine Companies

Run the list together and nearly every one of these was rewarded for a demand surge that got read as a permanent shift.

When the conditions behind the surge changed, the businesses changed with them, and the share prices followed, regardless of how well known the names were.

The prices quoted here are a September 2022 snapshot and have moved since. What a business earns, what it owes, who has arrived to compete with it, and how much of that is already in the price: those questions outlast any snapshot.

Working through them removes no risk either, and every stock named above, familiar or not, can lose value.