# FNMA FNMA, Series 2018-20, Class SB

FNMA FNMA, Series 2018-20, Class SB is a security (CUSIP 3136B07G5) tracked across SEC portfolio filings. 3 registered fund positions totaling $623K via N-PORT as of 2026-04-30.

## Summary

- Issuer: FNMA
- Class: FNMA, Series 2018-20, Class SB
- CUSIP: 3136B07G5
- Asset category: ABS-MBS
- 13F holders: 0
- N-PORT fund positions: 3
- N-PORT value: $623K
- N-PORT report: 2026-04-30

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Putnam Mortgage Securities Fund](https://search.stillhousedata.com/fund/S000006570) | Putnam Mortgage Securities Fund | $323K | 8.37% |
| Putnam Premier Income Trust | Putnam Premier Income Trust | $200K | 5.62% |
| Putnam Master Intermediate Income Trust | Putnam Master Intermediate Income Trust | $99K | 6.08% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/3136B07G5.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.