# UPGRADE MASTER PASS-THRU TRUST SERIES 2025-ST4 UMPT 2025-ST4 A

UPGRADE MASTER PASS-THRU TRUST SERIES 2025-ST4 UMPT 2025-ST4 A is a security (CUSIP 91533MAA4) tracked across SEC portfolio filings. 8 registered fund positions totaling $4.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: UPGRADE MASTER PASS-THRU TRUST SERIES 2025-ST4
- Class: UMPT 2025-ST4 A
- CUSIP: 91533MAA4
- Asset category: ABS-O
- 13F holders: 0
- N-PORT fund positions: 8
- N-PORT value: $4.0M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $2.7M | 1.50% |
| [Virtus Newfleet Multi-Sector Bond ETF](https://search.stillhousedata.com/fund/S000048895) | ETFis Series Trust I | $460K | 10.83% |
| BlackRock Ltd Duration Income Trust | BlackRock Ltd Duration Income Trust | $202K | 3.87% |
| [BlackRock Strategic Global Bond Fund, Inc.](https://search.stillhousedata.com/fund/S000002866) | BlackRock Strategic Global Bond Fund, Inc. | $144K | 1.65% |
| BlackRock Core Bond Trust | BlackRock Core Bond Trust | $144K | 2.07% |
| BlackRock Multi-Sector Income Trust | BlackRock Multi-Sector Income Trust | $144K | 1.89% |
| [Thornburg Multi Sector Bond ETF](https://search.stillhousedata.com/fund/S000089220) | Thornburg ETF Trust | $105K | 5.67% |
| [BlackRock Securitized Income Fund](https://search.stillhousedata.com/fund/S000062368) | Managed Account Series II | $90K | 1.99% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/91533MAA4.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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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.