Compare iShares MBS ETF (MBB) vs Materials Select Sector SPDR Fund (XLB) Price & Performance
Price performance (Past 24H)
Key statistics
Key statistics
iShares MBS ETF vs Materials Select Sector SPDR Fund — how do they compare? iShares MBS ETF trades at $89.54 (market cap $35.41B), while Materials Select Sector SPDR Fund trades at $49.47 (market cap $7.73B). The key difference: iShares MBS ETF is far larger — about 4.6× Materials Select Sector SPDR Fund's market cap, and Materials Select Sector SPDR Fund 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 MBS ETF for 96 Days and Materials Select Sector SPDR Fund for 70 Days on average.
| MBB | XLB | |
|---|---|---|
Market Cap | $35.41B | $7.73B |
Volume | 5,388,525 | 13,681,146 |
Sector | Fixed Income | — |
52-Week High | $96.91 | $53.67 |
52-Week Low | $89.09 | $42.23 |
Typical Hold Time | 96 Days | 70 Days |
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
Aura AI Summary
Signals from Pluang's Aura AI — not financial advice
MBB, the iShares MBS ETF, trades at $89.54, up 0.36% on the day but showing a bearish technical signal overall. The ETF has faced significant short interest growth of 98.3% in September 2026, reaching 6.57 million shares, and recently hit a 52-week low. Recent news highlights concerns over intermediate duration risk amid potential rate hikes, though institutional buying from firms like Corient Private Wealth and Baird Financial Group provides some support. Key technical indicators show oversold conditions on the 12-day RSI but strong selling pressure from moving averages.
The outlook for MBB remains cautious due to interest rate sensitivity and convexity risks in the mortgage-backed securities market. While dividend payments offer income, rising rates and inflation pressures pose downside risks. Analyst sentiment is neutral to bearish, with the ETF's performance heavily tied to Federal Reserve policy. Investors should weigh the high yield against duration risk in a tightening cycle.
XLB trades at $49.49, up 1.04% with a bearish technical signal from moving averages. The materials ETF shows neutral oscillators but faces selling pressure with ADX indicators signaling strong trends. Recent news highlights sector concentration risks with chemicals comprising 49% of assets, while infrastructure and manufacturing trends provide support. The ETF remains below its 200-day moving average of $50.93, indicating technical weakness.
Outlook remains cautious as materials sector faces cyclical headwinds with limited upside after recent rebound. Investment opportunity exists in AI-resistant businesses and infrastructure exposure, but risks include heavy concentration in chemicals and moderate overvaluation in construction materials. Wall Street sentiment appears mixed with some analysts viewing current levels as fully valued.
Returns comparison
Trailing returns across standard periods
Returns comparison
Trailing returns across standard periods
Investor sentiment on Pluang
What Pluang investors did over the last 30 days
Investor sentiment on Pluang
What Pluang investors did over the last 30 days
About iShares MBS ETF
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 →About Materials Select Sector SPDR Fund
In seeking to track the performance of the index, the fund employs a replication strategy. It generally invests substantially all, but at least 95%, of its total assets in the securities comprising the index. The index includes securities of companies from the following industries: chemicals; metals and mining; paper and forest products; containers and packaging; and construction materials. The fund is non-diversified.
Read more on XLB →
