iShares S&P GSCI Commodity-Indexed Trust ETF vs iShares MBS ETF — how do they compare? iShares S&P GSCI Commodity-Indexed Trust ETF trades at $36.08 (market cap $1.02B), while iShares MBS ETF trades at $89.75 (market cap $35.41B). The key difference: iShares MBS ETF is far larger — about 34.7× iShares S&P GSCI Commodity-Indexed Trust ETF's market cap, and iShares S&P GSCI Commodity-Indexed Trust ETF is trading nearer its 52-week high, iShares MBS ETF nearer its low. Which is the better fit depends on your goals — on Pluang, investors hold iShares S&P GSCI Commodity-Indexed Trust ETF for 40 Days and iShares MBS ETF for 96 Days on average.
| GSG | MBB | |
|---|---|---|
Market Cap | $1.02B | $35.41B |
Volume | 1,256,221 | 5,388,525 |
Sector | Commodities - Metals/Agriculture | Fixed Income |
52-Week High | $37.15 | $96.91 |
52-Week Low | $22.45 | $89.09 |
Typical Hold Time | 40 Days | 96 Days |
Signals from Pluang's Aura AI — not financial advice
No Aura AI signal available yet.
MBB, the iShares MBS ETF, trades at $89.68, up 0.52% on the day, but technical indicators signal a bearish trend with moving averages and ADX pointing lower. The stock recently hit a new 52-week low of $91.02 on September 15, 2026, as short interest surged 98.3% in September, reflecting negative sentiment. Recent news highlights concerns over rising intermediate-term rates and inflation pressures impacting mortgage-backed securities.
The outlook remains cautious due to interest rate sensitivity and convexity risks in the mortgage market. While institutional buying by firms like Corient Private Wealth provides some support, the bearish technicals and macroeconomic headwinds suggest limited near-term upside. Key risks include further rate hikes and prepayment volatility in the MBS portfolio.
Trailing returns across standard periods
What Pluang investors did over the last 30 days
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GSG is a diversified commodity ETF that tracks the S&P GSCI Total Return Index. It provides exposure to a broad basket of futures, including energy, metals, and agriculture, with a significant weighting toward the energy sector.
Read more on GSG →The fund will invest at least 80% of its assets in the component securities of the underlying index and TBAs that have economic characteristics that are substantially identical to the economic characteristics of the component securities of the index, and the fund will invest at least 90% of its assets in fixed income securities included in the underlying index that advisor believes will help the fund track the index.
Read more on MBB →