Rhodium Extends Slide as Market Shifts From Deficit to Surplus for First Time Since 2020

Rhodium is trading at $8,150 per troy ounce, the lowest level since early May 2026. The metal has lost roughly 10% over the past two weeks, and the directional trend has been consistently down since February, when rhodium was trading above $10,000/oz. The selloff reflects a fundamental change in market balance: after years of deficits, the rhodium market is expected to record a small surplus of approximately 15,000 ounces in 2026.

Fifteen thousand ounces is not a large number in absolute terms — annual rhodium demand is roughly 1 million ounces. But it represents a significant regime shift. The rhodium market operated in deficit for most of the 2021-2025 period, with autocatalyst demand consistently outstripping mine supply. The cumulative deficit drew down above-ground inventories that had been built during the 2019-2020 surplus period. Now, for the first time since the pandemic-era surplus, the market is expected to rebuild those inventories.

The driver is demand destruction, not supply growth. Rhodium is used almost exclusively in automotive catalytic converters, where it is essential for reducing nitrogen oxide (NOx) emissions in gasoline engines. As BEVs continue to gain market share (28% of global new vehicle sales in Q2 2026) and as automakers optimize PGM loadings to reduce costs, the volume of rhodium consumed per vehicle has declined. A typical gasoline catalytic converter today contains roughly 15-20% less rhodium than a 2020 equivalent, reflecting both engineering optimization and the shift toward smaller-engine vehicles that require less PGM loading.

Supply, in contrast, remains constrained. South Africa accounts for roughly 80% of global rhodium production, and South African mines face the same structural challenges affecting PGM production broadly: declining ore grades, electricity costs, labor inflation, and depleting reserves at major operations. Amplats' Mogalakwena, the world's largest PGM mine, reported that rhodium grades in the ore body are declining as the mine goes deeper. Tharisa Minerals reported a 4% decline in rhodium production in Q2 2026. There is no meaningful new rhodium supply entering the market. The shift to surplus is entirely a demand phenomenon.

The price action tells a story. Rhodium peaked at $29,800/oz in March 2021 during the post-pandemic auto production recovery. The subsequent decline to current levels is an 87% drawdown. That is a brutal move by any standard, but it needs context: rhodium prices of $8,000/oz are still high by historical standards. Before the 2021 spike, rhodium averaged $5,000-7,000/oz from 2017-2020. Before that, it averaged $1,000-2,000/oz for most of the 2010s. The current price level is not a generational low, it is a normalization after an extraordinary spike.

Heraeus Precious Metals' 2026 forecast sees rhodium in a $6,000-$9,000/oz range, reflecting the view that the demand base is eroding but supply constraints prevent a collapse below $6,000. Phoenix Refining's recent analysis of the market noted that surplus expectations, even a small one, can have an outsized impact on a metal as thinly traded as rhodium. The daily trading volume in rhodium is a fraction of that in gold or platinum, meaning that relatively small shifts in market balance can produce disproportionate price moves.

The bull case for rhodium requires a catalyst: either a sharp rebound in internal combustion engine vehicle production (unlikely given the BEV trajectory), a major South African supply disruption (always possible), or a sustained period of price below $6,000 that incentivizes demand-side conservation and creates a reflexive price floor. The bear case is that the surplus widens as BEV adoption accelerates and rhodium eventually trades below $6,000 for the first time since 2020. The base case: rhodium trades in a $7,000-9,000 range through H2 2026, with the direction determined by auto production data and South African mining conditions.

The rhodium market's transition from deficit to surplus in 2026 is a story of demand evolution, not supply growth. It is important to understand that total rhodium supply has been flat to declining for five years. South African production, which accounts for roughly 80% of global supply, has been constrained by the same structural issues that affect the broader PGM sector: declining ore grades at major operations, rising input costs, and regulatory uncertainty. What has changed is not the quantity of rhodium being produced but the quantity being consumed.

Auto catalyst demand for rhodium is declining for three distinct reasons. First, BEVs do not use catalytic converters at all, and as they gain market share the total addressable market for rhodium shrinks. Second, the trend toward smaller engines across the global auto fleet — driven by fuel economy regulations in the EU and China — reduces the amount of PGM loading required per vehicle. A small turbocharged engine needs less rhodium in its catalyst than a large naturally aspirated V8. Third, automakers have become much more sophisticated at optimizing PGM loadings, using advanced catalyst coating technologies that achieve the same emissions reduction with 10-15% less rhodium.

The South African supply risk is the factor that prevents a full collapse to $4,000-5,000/oz. As the Phoenix Refining analysis noted, the surplus of 15,000 ounces is small relative to annual demand of roughly 1 million ounces. A single mine outage at a major operation like Anglo American Platinum's Mogalakwena or Impala Platinum's Rustenburg operations could eliminate the surplus entirely and push the market back into deficit within weeks. The rhodium market has a history of violent price moves in both directions precisely because the supply-demand balance is so precariously balanced.

The $8,150/oz level is roughly midway between the Heraeus forecast range of $6,000-$9,000/oz for 2026. The low end of the range reflects the bear case: BEV adoption accelerates, the surplus widens, and rhodium slowly drifts toward pre-pandemic pricing levels of $4,000-6,000/oz. The high end of the range reflects the bull case: ICE vehicle production remains resilient, South African supply disappoints, and the market returns to deficit. The dispersion between these scenarios is unusually wide, reflecting genuine uncertainty about both the pace of BEV adoption and the trajectory of South African mine supply.

The rhodium market's thin liquidity means that any shift in the supply-demand balance produces outsized price moves. Average daily trading volumes in rhodium are estimated at less than 3,000 ounces globally, compared to gold's 200,000+ ounces. This means that a single institutional buyer or seller can move the market by 2-3% in a single trade. For industrial buyers and sellers of rhodium, this creates both opportunity and risk. On one hand, the wide bid-ask spread ($50-100/oz is normal) means trading costs are high. On the other, the lack of liquidity means that price dislocations — where rhodium trades temporarily below its fundamental value — occur with some regularity and create buying opportunities for patient consumers. The key is to have a clear view of your fundamental supply needs and to trade only when the market offers a price that reflects genuine value rather than temporary liquidity imbalances.