The Nifty Fifty Bubble (1970s)
The belief that "you can buy a good company's stock no matter how expensive it is"—doesn't it sound familiar? America's Nifty Fifty in the 1970s is exactly the case that showed how that belief was shattered.
"One-Decision Stocks"
In the early 1970s in the U.S., about 50 blue-chip large-cap stocks like Coca-Cola, IBM, Xerox, Polaroid, McDonald's, and Disney were the market's darlings. They were called "stocks you buy once and hold forever (one-decision stocks)" and grouped as the Nifty Fifty.
The logic was simple: for companies this good, the price didn't matter. The problem was precisely that attitude of "the price doesn't matter."
P/E of 42, Polaroid at 94
At the end of 1972, the Nifty Fifty's average price-to-earnings ratio (P/E) was about 42, more than double the S&P 500 average of about 19. Over 20% of the stocks exceeded a P/E of 50, with Polaroid trading at about 94.8 and Xerox at about 45.8.
A P/E of 94 means "if the current earnings level stays as-is, it takes 94 years to recoup your principal." No matter how good the company, a price like this was one that pulled far too much future growth forward.
A good company and a good investment are different. Even a great company, if bought too expensively, can produce poor returns.
When the Bubble Burst, It Fell Harder Than the Market
In the 1973-74 bear market, the S&P 500 fell about -14% in 1973 and about -26% in 1974. But the overvalued Nifty Fifty collapsed even harder than the market. Polaroid plunged more than -90%, Xerox about -71%, and McDonald's about -70%.
The belief that "blue chips are safe" led to the illusion that "blue chips can be expensive," and the price was a drawdown exceeding the market average. Many of these stocks took a long time to recover afterward.
よくある質問
Q. Did the Nifty Fifty companies eventually go under?
No. Many, like Coca-Cola and McDonald's, grew greatly over the long run. The problem was not "the company's success or failure" but the "entry price." No matter how good the company, if you buy at a P/E of 90, an investor's return can lag for a long time even as the company grows.
Q. Is there something like the Nifty Fifty in today's market?
The phenomenon of the market concentrating in a handful of large growth stocks repeats in every era. That said, asserting whether a specific stock is a bubble is the domain of prediction and isn't addressed in this article. The key is the habit of checking for yourself "how much the concentrated expectations are reflected in valuations."
関連ページ
📋 結果は過去のデータに基づくものです。過去のリターンは将来のリターンを保証しません。
📋 本サービスは投資アドバイスではなく、投資を理解するための教育目的で提供されています。