# Upstart Securitization Trust Upstart Securitization Trust 2021-4

Upstart Securitization Trust Upstart Securitization Trust 2021-4 is a security (CUSIP 91682NAC7) tracked across SEC portfolio filings. 5 registered fund positions totaling $246K via N-PORT as of 2026-03-31.

## Summary

- Issuer: Upstart Securitization Trust
- Class: Upstart Securitization Trust 2021-4
- CUSIP: 91682NAC7
- Asset category: ABS-O
- 13F holders: 0
- N-PORT fund positions: 5
- N-PORT value: $246K
- N-PORT report: 2026-03-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [DoubleLine Core Fixed Income Fund](https://search.stillhousedata.com/fund/S000028164) | DoubleLine Funds Trust | $199K | 0.29% |
| DoubleLine Income Solutions Fund | DoubleLine Income Solutions Fund | $21K | 0.16% |
| [RiverNorth/DoubleLine Strategic Income Fund](https://search.stillhousedata.com/fund/S000030798) | RIVERNORTH FUNDS | $13K | 0.13% |
| RiverNorth/DoubleLine Strategic Opportunity Fund Inc. | RIVERNORTH/DOUBLELINE STRATEGIC OPPORTUNITY FUND INC. | $6K | 0.30% |
| DoubleLine Yield Opportunities Fund | DoubleLine Yield Opportunities Fund | $6K | 0.09% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/91682NAC7.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.