Generated September 5, 2026.
Overview
Both GLD and IAUM are physically backed gold ETFs that track the spot price of gold bullion, holding actual metal in vault storage. The key distinction is size and cost: GLD is the original and substantially larger gold ETF with $146B, while IAUM is a newer micro-share offering launched in 06/15/2021 with $8.14B in assets that charges a lower fee for investors seeking a smaller share price.
How they differ
GLD and IAUM track the same underlying—gold bullion—and neither distributes income, so the primary difference is operational cost. GLD's expense ratio is 0.40%, while IAUM's is 0.09%, a difference that may seem modest until compounded over years. GLD has been operating since 11/18/2004, accumulating $146B in AUM and establishing deep liquidity, whereas IAUM is a newer entrant with $8.14B that offers a lower price per share ( vs. ) for investors uncomfortable with higher absolute prices. Both carry identical beta of 0.36, meaning they move in lockstep with gold price swings, but GLD's vastly larger size typically translates to tighter bid-ask spreads and higher trading volume—a material advantage for frequent traders or large position builders.
Who each is best for
GLD: Fits investors seeking maximum liquidity and the longest track record of gold exposure, particularly those building or rebalancing sizable positions where execution costs matter.
IAUM: Designed for cost-conscious gold investors comfortable with a smaller AUM pool, and those who prefer a lower nominal share price as a psychological anchor or to simplify fractional share calculations in smaller accounts.
Key risks to know
- Gold price volatility and beta: Both funds move directly with the spot gold price; neither hedges or smooths price swings. A 10% drop in gold translates into a 10% loss, with no diversification benefit within either fund.
- Liquidity mismatch risk: GLD's $146B dwarfs IAUM's $8.14B. In a market stress event when gold trading volumes compress, IAUM's smaller ecosystem may see wider spreads or slower fills, especially for large orders. Over a 20-year holding period at flat gold prices, that compounds to material underperformance for GLD, though actual gold price movement will dwarf this effect in normal markets.
- Counterparty and custodial risk: Both funds hold physical gold in third-party vaults. While both are highly rated, vault security, insurance coverage, and custodian financial health remain real but low-probability risks that affect both equally.
Bottom line
If you prioritize the tightest liquidity, longest operating history, and the confidence of massive AUM, GLD's scale offers practical advantages that may outweigh its higher fee for active traders. Both carry identical price risk; the choice hinges on your trading frequency, position size, and cost sensitivity—not on the underlying gold exposure. Past performance does not predict future results.
AI-generated analysis for educational purposes only. Verify important details independently; past performance does not guarantee future results.
