Two philosophies
At the root of every portfolio is a quiet argument about what a company is worth. Value investors buy businesses that look cheap relative to their book value, earnings, or dividends — the unloved, the boring, the temporarily out of favor. Growth investors pay up for companies expected to expand fast — the disruptors, the dreamers, the obvious future.
Same market, opposite temperaments. And for a hundred years, the contest between them has swung back and forth.
The value century
For most of the 20th century, value won. From the 1930s through the late 1990s, cheap stocks reliably out-earned expensive ones by roughly 3 to 5 percentage points a year in the U.S. The logic was sound: buying $1 of assets for $0.60 builds in a margin of safety, and mean reversion eventually rewards patience.
Even through the dot-com bubble, value held up better on the way down. When the bubble popped in 2000, the expensive names collapsed while the cheap ones merely sagged.
The growth revenge
Then came the long growth decade. From 2017 to 2024, a handful of mega-cap technology companies — powered by cloud computing, network effects, and finally artificial intelligence — delivered returns that made value look prehistoric. The Russell 1000 Growth index roughly doubled the return of its value counterpart over that stretch.
A whole cohort of investors concluded that value was dead, that the old rules no longer applied, that the future had already been priced in.
Why value should still work
Value is not a style; it is a risk premium. Investors demand extra return to hold dull, cyclical, unpopular businesses that can disappoint. That premium does not disappear just because one decade went the other way.
History is littered with declarations of value's death — in 1999, in 2007, and again in 2021. Each time, the premium reappeared within a few years, often violently, as crowded growth trades unwound.
Why growth can stay expensive
The inconvenient truth is that some growth is real. The internet did change everything. AI may change more. Paying 50 times earnings for a company that grows 30% a year is not irrational if the growth shows up — and for a few winners, it did.
The danger is not growth itself but overpaying for the average growth story. Most hot companies revert to mediocrity; only a tiny fraction become the giants that justify their valuations.
The takeaway
You do not have to pick a side. The strongest portfolios hold both — value for the mean-reversion premium and downside defense, growth for the upside when innovation compounds. The error is abandoning one after it lags for a decade, which is precisely when it is cheapest.
The tug of war never ends. The investor who owns both ropes stops getting yanked around.