Platinum and palladium are both platinum group metals, mined from the same ore bodies and processed through the same smelters. They sit side by side on the periodic table and compete for the same seat in automotive catalytic converters.
Despite that shared geology and chemistry, platinum and palladium have traded places in price repeatedly over the past decade. The reasons behind those swings, and where each metal stands today, matter for anyone considering PGMs as part of a precious metals portfolio.
Price History and the Great Swap
For most of modern history, platinum traded at a premium to palladium. That relationship inverted in 2018 when palladium surged past platinum and kept climbing. By early 2022, palladium peaked near $3,000 per ounce during the Russia-supply panic following the Ukraine conflict, while platinum languished below $1,100.
The swap happened because the global auto fleet shifted heavily toward gasoline engines (which use palladium catalysts) and away from diesel engines (which use platinum catalysts). Europe’s post-Dieselgate retreat from diesel vehicles directly compressed platinum demand while inflating palladium consumption.
Today the relationship has partially corrected. Palladium trades around $1,441 per ounce. Platinum sits at approximately $1,819 per ounce. Platinum has reclaimed the higher price, though the gap between them remains narrower than historical norms would suggest.
Track the live spread using the gold-platinum ratio and the current platinum spot price and palladium spot price.
Supply Geography
Both metals suffer from extreme geographic concentration in their mine supply.
Platinum: approximately 70% of mine production comes from South Africa, with total mine supply at 5.551 million ounces. South Africa’s Bushveld Complex is the world’s dominant source. Power grid instability (Eskom load-shedding), labor costs, and policy uncertainty create persistent supply risk.
Palladium: roughly 40% of supply comes from Russia (primarily Nornickel operations in the Norilsk region) and about 35% from South Africa. Russia’s dominance gives palladium a different flavor of geopolitical risk. Nornickel production decisions, export controls, or sanctions can swing global palladium supply more abruptly than any single factor in platinum.
Total palladium supply sits at approximately 9.19 million ounces against demand of roughly 9.56 million ounces. Whether the market runs a surplus or deficit in any given year depends heavily on Russian output decisions and recycling volumes. Forecasts diverge depending on the source, which itself signals how fragile the palladium balance sheet is.
Platinum’s supply picture is more clearly constrained. The market faces a 297,000-ounce deficit in 2026, the fourth consecutive year of shortfall. Above-ground inventories have dropped below three months of demand.
Demand Drivers
Auto Catalysts
Both metals serve the same function (converting harmful exhaust gases into less toxic emissions) but in different engine types.
- Gasoline engines use palladium-dominant catalytic converters
- Diesel engines use platinum-dominant catalytic converters
The EV transition threatens both metals’ auto catalyst demand, but palladium faces the sharper near-term risk. Gasoline vehicle sales are declining faster than diesel in most major markets. Platinum has partial insulation because diesel remains dominant in commercial vehicles and heavy transport, segments that electrify more slowly.
Beyond Auto Catalysts
Platinum carries meaningful demand optionality that palladium lacks. Hydrogen fuel cell vehicles require platinum catalysts, and as fuel cell infrastructure develops across Europe, Japan, and South Korea, this could offset declining diesel catalyst demand. Platinum also serves chemical processing, glass manufacturing, and medical device applications.
Palladium’s demand profile outside auto catalysts is thinner. Electronics and dental applications absorb some volume, but there is no equivalent to platinum’s hydrogen fuel cell runway.
Is Palladium a Good Investment?
For physical bullion buyers, palladium presents several practical challenges that go beyond the supply and demand fundamentals.
Limited product selection. The Canadian Palladium Maple Leaf is effectively the only widely available palladium bullion coin. A small number of palladium bars exist from select refiners, but variety is minimal compared to gold, silver, or even platinum.
Wide bid-ask spreads. Because fewer dealers carry palladium inventory and turnover is slow, the spread between what you pay to buy and what you receive when selling is significantly wider than for gold or silver bullion. This spread eats into returns, particularly for shorter holding periods.
High premiums. Palladium bullion premiums over spot tend to run higher than premiums on comparable platinum products, reflecting the thin market and limited competition among sellers.
Thin liquidity. Selling palladium bullion at a competitive price often requires more effort and patience. Local coin shops may not carry or buy palladium at all. Online dealers will purchase it, but the pool of active buyers is smaller.
Palladium can work as a small, speculative allocation for investors who understand PGM fundamentals and have a strong conviction about supply disruption (particularly from Russia). But it is a niche position, not a core holding. Most physical bullion portfolios are better served by adding platinum as their first PGM exposure before considering palladium.
Where Rhodium Fits
Any discussion of PGM investing eventually arrives at rhodium, the rarest and most volatile of the group.
Annual rhodium production totals roughly 30 tons globally. To put that in perspective, gold mine production exceeds 3,672 tonnes per year. Rhodium output is measured in tons, not thousands of tons.
Approximately 71% of rhodium demand comes from automotive catalytic converters, where it works alongside platinum and palladium to reduce nitrogen oxide emissions. Supply is even more concentrated than platinum, with South Africa dominating production.
The price history tells a dramatic story. Rhodium spiked to approximately $29,000 per ounce in 2021, driven by auto industry restocking and supply constraints. It has since corrected to approximately $8,500 per ounce, with the market shifting from shortage to a fragile surplus as recycling volumes have grown.
Track rhodium’s relationship to gold through the gold-rhodium ratio.
Why Rhodium Is Not Practical for Most Investors
Rhodium is not available as standard bullion products. There are no sovereign rhodium coins. Rhodium bars exist from a handful of specialty refiners, but pricing is opaque, spreads are enormous, and finding a buyer when you want to sell is genuinely difficult.
For physical precious metals investors, rhodium is a spectator sport. The price movements are fascinating to watch, but the lack of standardized bullion products, credible liquidity channels, and reasonable transaction costs makes it impractical for all but the most specialized (and well-capitalized) speculators.
PGMs in a Precious Metals Portfolio
If you already hold gold and silver, the question becomes which PGM deserves the next allocation.
Platinum is the most practical PGM addition for several reasons:
- Deeper product selection across coins and bars
- Lower premiums than palladium bullion
- Stronger supply deficit narrative (four consecutive years, sub-3-month inventories)
- Hydrogen fuel cell demand optionality
- Better retail liquidity for both buying and selling
Palladium is a speculative satellite position. Suitable for investors with specific conviction about Russian supply disruption or gasoline-catalyst demand resilience, but the practical friction of buying, holding, and selling palladium bullion makes it a secondary consideration.
Rhodium is not a viable physical investment for most retail buyers. The market infrastructure simply does not support it.
For more on how platinum compares to gold and silver specifically, see our analyses of gold vs platinum and platinum vs silver.
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