Every market cycle produces its own version of a bubble, and every cycle produces investors who insist this time is different. The specific industry changes, but the underlying pattern of how a bubble forms and unwinds is remarkably consistent across decades.
The first stage is a genuine, defensible narrative. There is almost always a real technological or economic shift underneath a bubble; the mistake is not in recognizing the shift but in extrapolating it too far, too fast, into valuations that assume near-perfect execution for years into the future.
The second stage is the disconnection between price and filed fundamentals. Revenue and earnings continue to grow, but valuation multiples expand faster than the underlying business improves, so an increasing share of the stock price reflects expectations about the future rather than results already delivered.
The third stage is the arrival of capital that is not underwriting the business model but chasing the price action itself. This is often visible in trading volume, options activity, and retail sentiment indicators well before it shows up in any fundamental metric.
The unwind typically begins with a single disappointing data point, a guidance cut, a slower-than-expected adoption curve, that would have been a minor event at a reasonable valuation but becomes a catalyst when the multiple has left no room for anything less than perfection.
The practical takeaway is not to avoid exciting industries, but to keep separate track of the story and the numbers. Research that explicitly frames stocks along a bargains-to-bubbles spectrum, weighing valuation against filed results rather than narrative momentum, such as BullScope’s Bargains & Bubbles coverage, gives investors a structured way to ask the uncomfortable question before the market asks it for them.
