City of Houston TX Combined Utility System Revenue HOUSTON UTIL-REF-B6 is a security (CUSIP 442435XR9) tracked across SEC portfolio filings. 1 registered fund positions totaling $18.9M via N-PORT as of 2026-05-31; 4 money-market funds via N-MFP.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD MUNICIPAL LOW DURATION FUND | VANGUARD CMT FUNDS | $18.9M | 33.48% |