MBB holdings
What iShares MBS (MBB) holds: its top holdings by weight and its sector weights.
MBB sector weights
| Sector | Weight |
|---|---|
| Federal National Mortgage Association | 42.64% |
| Federal Home Loan Mortgage Corporation | 30.24% |
| Government National Mortgage Association | 24.01% |
| Uniform MBS | 2.67% |
| Cash and/or Derivatives | 0.44% |