Houston Independent School District HOUSTON ISD-REF is a security (CUSIP 442403SJ1) tracked across SEC portfolio filings. 1 registered fund positions totaling $3.5M via N-PORT as of 2026-05-31; 8 money-market funds via N-MFP.
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD MUNICIPAL LOW DURATION FUND | VANGUARD CMT FUNDS | $3.5M | 6.22% |