Which Gold ETF Is the Better Buy: iShares' IAU or State Street's GLD?

IAU vs. GLD is effectively a choice of identical physical-gold exposure priced by cost: iShares Gold Trust charges a 0.25% expense ratio versus 0.40% for SPDR Gold Shares. Over the trailing year, returns were nearly the same (IAU 29.2% vs GLD 29.0%), with both showing the same 5-year max drawdown (26.4%) and low beta (0.19). For long-term buy-and-hold investors, the article argues IAU is the better buy on compounding fee savings, while GLD is preferred for higher liquidity/institutional trading given its larger AUM ($146.0B vs $64.2B).

Analysis

This is a vehicle-selection story, not a gold-beta signal. The economic edge is in fee drag, so the steady winner over long holding periods is the lower-cost wrapper, but the gap is only meaningful if the position is held for years and rebalanced infrequently. For high-turnover macro books, the liquidity premium of the larger vehicle can easily overwhelm a 15 bps annual fee gap.

Second-order, the likely winner from a slow allocator migration is IAU: model portfolios, RIAs, and fiduciaries are the natural buyers because they optimize tracking error over cost. GLD should retain the institutional hedging franchise because options depth and secondary-market liquidity matter more than expense ratio when size, speed, and execution certainty dominate. That means the market may bifurcate: IAU as the default long-horizon holder, GLD as the preferred trading instrument.

The contrarian point is that the fee argument is probably overemphasized in the headline debate. If real yields rise or the dollar strengthens, both wrappers underperform together and the vehicle choice becomes irrelevant; if volatility spikes, GLD’s liquidity moat likely expands, not contracts. The only real catalyst that could shift share meaningfully is a fee cut by GLD or a sustained advisor-led rotation into low-cost gold exposure over the next 1-3 quarters.

Key Decisions for Investors

• For strategic gold exposure, prefer IAU over GLD for new long-only allocations over a 6-18 month horizon; the expected edge is modest but persistent, with the main risk being a future GLD fee cut or spread widening in IAU during stress.
• For tactical hedges or event-driven macro trades over days to weeks, use GLD rather than IAU because execution quality and options liquidity are more important than the 15 bps fee delta; this is a liquidity trade, not a carry trade.
• Watch for advisor-platform flow data and ETF creation/redemption trends over the next 1-3 months; if IAU begins taking share without any change in gold itself, that supports a small long IAU / short GLD relative-value basket.
• No strong directional trade in GDX or gold miners from this piece alone; wait for gold spot, real yields, or USD to provide the actual catalyst before expressing beta through miners.