# iShares MBS ETF (MBB)

> Source: Nexqual · https://nexqual.com/MBB · data as of 2026-10-22 20:00 UTC · cite as "Nexqual, iShares MBS ETF (MBB), nexqual.com/MBB" · informational, not investment advice.

**Price:** USD 91.38 (+0.93% on the day) · last close of Oct 22, 2026; US market pre market, not a live price. Prev close 90.54 · day 90.92–91.55 · 52w 88.58–96.97 · market cap null · NGM

## Key facts
- Total return with dividends: 1Y -0.5% vs S&P 500 +14.9%; 5Y +0.7% vs S&P 500 +80.3%.

## Total return (dividends reinvested)
|  | 1Y (from 2025-10-23) | 5Y (from 2021-10-18) |
|---|---|---|
| Total return | -0.5% | +0.7% |
| S&P 500 (SPY) | +14.9% | +80.3% |
| Per year | -0.5% | +0.1% |
| Volatility (annualized) | 4.9% | 6.5% |
| Max drawdown | -5.4% (Feb 2026→Oct 2026) | -16.6% (Nov 2021→Oct 2022) |

## Peers
IEI (iShares 3-7 Year Treasury Bond ) USD 114.79 +0.72% · EMB (iShares J.P. Morgan USD Emergin) USD 91.85 +0.45% · VMBS (Vanguard Mortgage-Backed Securi) USD 45.3 +0.98% · MUB (iShares National Muni Bond ETF) USD 103.24 +0.77% · GVI (iShares Intermediate Government) USD 104.04 +0.54%

## More
Full page: https://nexqual.com/MBB · Free keyless MCP server with the same data and citations: https://mcp.nexqual.com/mcp · Guide for agents: https://nexqual.com/agents · https://nexqual.com/llms.txt

## Options: expected move (Cboe, 15-min delayed)

| Expiration | Days | ATM IV | Expected move |
|---|---|---|---|
| 2026-11-20 | 28 | 8.1% | ±1.9% |
| 2026-12-18 | 56 | 9.5% | ±3.1% |
| 2027-03-19 | 147 | 8.3% | ±4.3% |
| 2027-06-17 | 237 | 8.5% | ±5.5% |
| 2027-09-17 | 329 | 8.2% | ±6.1% |