# Upgrade Master Pass-Thru Trust Upgrade Master Pass-Thru Trust Series 2025-ST8

Upgrade Master Pass-Thru Trust Upgrade Master Pass-Thru Trust Series 2025-ST8 is a security (CUSIP 91535UAD8) tracked across SEC portfolio filings. 2 registered fund positions totaling $272K via N-PORT as of 2026-03-31.

## Summary

- Issuer: Upgrade Master Pass-Thru Trust
- Class: Upgrade Master Pass-Thru Trust Series 2025-ST8
- CUSIP: 91535UAD8
- Asset category: ABS-O
- 13F holders: 0
- N-PORT fund positions: 2
- N-PORT value: $272K
- N-PORT report: 2026-03-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| BlackRock Multi-Sector Income Trust | BlackRock Multi-Sector Income Trust | $149K | 1.95% |
| BlackRock Core Bond Trust | BlackRock Core Bond Trust | $123K | 1.76% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/91535UAD8.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

---

Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.