The long-run record
Over very long periods, gold has roughly held its purchasing power. An ounce of gold has bought a fine suit of clothes for most of recorded history, and US data since the 1970s shows gold appreciating faster than cumulative inflation. The 1970s were the showcase decade: consumer prices roughly tripled while gold rose more than twenty-fold from its fixed-price starting point. As a multi-decade store of value, the hedge claim holds up reasonably well.
The short-run problem
Year to year, gold is a lousy CPI hedge. The cleanest recent example: in 2021 and 2022, US inflation ran at forty-year highs while gold went sideways to down for much of the period. The reason is that gold responds to what the Federal Reserve does about inflation — higher real rates — more than to inflation itself. If the Fed stays behind the curve and real rates sink, gold rallies. If the Fed tightens aggressively, gold can fall while your grocery bill climbs.
Academic studies consistently find gold's correlation with realized inflation over one-to-five-year windows is weak and unstable. The 1980s and 1990s told the same story in reverse: inflation fell steadily for two decades while gold went nowhere. Anyone selling you gold as a precise CPI tracker is selling, not explaining.
What gold actually hedges
Gold hedges monetary disorder more than consumer prices: currency debasement, negative real rates, loss of confidence in institutions, and tail risks that traditional portfolios handle poorly. Framed that way, a modest allocation has a defensible role in a long-term plan — but the honest pitch is long-run insurance with an uncertain premium, not an inflation tracking error of zero. Buyers should also remember gold pays nothing while they wait, so the insurance has a real carrying cost in high-rate environments.
For futures traders
If you trade gold around CPI releases, know you are trading positioning and rate expectations, not the inflation print. The number itself is almost an afterthought next to how it shifts the expected path of real yields, and the first move off the release is often the wrong one. Futures trading involves substantial risk of loss and is not suitable for all investors.