# TRK 2021-INV1 TRUST TRK 2021-INV1 B1

TRK 2021-INV1 TRUST TRK 2021-INV1 B1 is a security (CUSIP 89688WAE1) tracked across SEC portfolio filings. 2 registered fund positions totaling $1.5M via N-PORT as of 2026-03-31.

## Summary

- Issuer: TRK 2021-INV1 TRUST
- Class: TRK 2021-INV1 B1
- CUSIP: 89688WAE1
- Asset category: ABS-O
- 13F holders: 0
- N-PORT fund positions: 2
- N-PORT value: $1.5M
- N-PORT report: 2026-03-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $777K | 0.44% |
| [Master Total Return Portfolio](https://search.stillhousedata.com/fund/S000004067) | Master Bond LLC | $701K | 0.37% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/89688WAE1.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.