# UMBS, TBA Uniform Mortgage-Backed Security, TBA

UMBS, TBA Uniform Mortgage-Backed Security, TBA is a security (CUSIP 01F050478) tracked across SEC portfolio filings. 3 registered fund positions totaling $30.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: UMBS, TBA
- Class: Uniform Mortgage-Backed Security, TBA
- CUSIP: 01F050478
- Asset category: ABS-MBS
- 13F holders: 0
- N-PORT fund positions: 3
- N-PORT value: $30.4M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Lord Abbett Total Return Fund](https://search.stillhousedata.com/fund/S000007280) | LORD ABBETT INVESTMENT TRUST | $30.1M | 83.53% |
| [Fidelity Advisor Mortgage Securities Fund](https://search.stillhousedata.com/fund/S000005133) | Fidelity Advisor Series II | $201K | 2.62% |
| [Fidelity Series Sustainable Investment Grade Bond Fund](https://search.stillhousedata.com/fund/S000080313) | Fidelity Salem Street Trust | $25K | 18.09% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/01F050478.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.