The surprise: stocks did not behave like built-in inflation hedges
For years, the common take was that stocks shield you from inflation because businesses own real assets and can lift prices when costs jump. The 1970s threw cold water on that, at least over shorter and mid-length horizons. Two hits landed at once.
- Valuation pressure: As inflation rose, borrowing costs in nominal terms climbed, lifting the discount rate applied to future earnings.
- Profit squeeze: Many companies could not immediately pass pricier energy and raw materials through to customers. Real earnings fell, which piled on top of the multiple hit.
The outcome was an unusually weak stretch for equities that later fed into the conversation about the equity premium puzzle. The dry spell was long too. Someone who bought the S&P 500 at the 1966 peak did not get back to even in nominal dollars until about 1982, roughly sixteen years later.
After factoring in about 150 percent cumulative inflation over that window, the real drawdown was about 60 to 65 percent. On an inflation-adjusted basis, the S&P 500 did not revisit its 1966 high until around 1992, about twenty-six years after the starting point.
Bonds were the real wreckage
Long-duration government bonds delivered the worst major-asset performance in the inflationary 1970s. The math was brutal as yields kept climbing. A 30-year Treasury issued in 1965 with a 4.5 percent coupon had around $88 of market value per $100 face by 1970 when yields were near 6 percent.
By 1975, as yields approached 8 to 9 percent, that value slid to roughly $55 to $60. When yields peaked around 15 to 16 percent in 1981, it traded near $30 to $35.
Someone purchasing 30-year Treasuries in 1965 would, by 1981, be down roughly 65 to 70 percent on principal in nominal terms and about 85 to 90 percent in real purchasing power. Coupons helped but did not come close to making up for the capital damage. The lesson stuck: so-called risk free applies to nominal default, not to inflation or interest rate risk, which can lead to steep real losses.
Gold, commodities, and the assets that kept up
For decades, gold traded at a pegged price - initially $20.67 per ounce during the classical gold standard, and later $35 per ounce under Bretton Woods. That changed when convertibility was suspended in 1971 and the market could set the price. What followed was a dramatic repricing.
Around 1971, gold traded near $35 to $40 per ounce. It climbed to roughly $185 in 1974, dropped to about $100 in 1976, then surged to approximately $850 in January 1980 before settling near $300 to $350 by 1982.
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From the 1971 shift to the 1980 peak, the move worked out to roughly a 2,100 percent nominal gain and about 600 percent in real terms. The metal also posted standout returns from the 1973 embargo to that 1980 high. Why the strength? Three forces dominated:
- A monetary system reset: once the dollar link broke, gold could reflect prior money supply growth that had accumulated while the price was fixed.
- Inflation protection: as paper currencies lost purchasing power during a credibility crisis, gold's role as a store of value drove demand.
- Safe haven buying: geopolitical and financial stress, including the Vietnam War aftermath, Watergate, and the Iranian hostage crisis, pushed investors toward perceived safety.
Commodities more broadly moved with inflation. Crude climbed from about $3 a barrel at the start of 1973 to near $35 by 1980, a nominal jump of more than 1,000 percent. Copper, silver, agricultural markets, and energy generally followed that pattern.
Energy producers such as Exxon, Texaco, and Gulf Oil saw returns that beat the broad market and delivered positive real outcomes when the S&P 500 did not. The experience prompted institutional investors/) - including sovereign wealth funds alongside pension funds and endowments - to carve out specific commodity sleeves to guard against inflation.
Real estate held up, and the policy toolkit changed
Housing largely kept pace with inflation through the decade, and fixed-rate mortgages turned into a tailwind as rising prices eroded the real value of outstanding debt. Commercial property results varied by sector. Leverage mattered even more in that era: carrying a 30-year loan at a fixed 7 percent meant that when inflation ran at 10 to 12 percent, the inflation tax shrank the debt in real terms, while nominal home values often matched or exceeded the price surge.
The long bond slump spurred a structural response. Inflation-indexed bonds were created to secure real returns regardless of the inflation path. TIPS combine government credit quality with inflation adjustment so that investors earn the real yield rather than hoping actual inflation lands below what was baked into a conventional bond's price at purchase. The TIPS market today has about $2 trillion outstanding.
How the 1970s still shapes portfolios
A few principles stuck. Many institutions maintain dedicated allocations to inflation-sensitive assets such as commodities, TIPS, real estate, and infrastructure to guard against inflationary regimes. Fixed income managers pay close attention to duration because long bonds carry significant inflation risk, and liability-driven investors often trim duration when those risks rise. Finally, the decade reinforced commodities as a distinct return source with drivers that differ from stocks and bonds.
The upshot for your money: inflation can reshuffle which assets do the heavy lifting. When prices run hot, cash flows and valuations react at different speeds. Owning a mix that can handle more than one economic script gives you a better shot at keeping your purchasing power intact.
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