# Fidelity Advisor Mortgage Securities Fund

Fidelity Advisor Mortgage Securities Fund is a registered fund series of Fidelity Advisor Series II (series S000005133). Net assets $766.8M as of 2026-05-31.

## Profile

- Series ID: S000005133
- Registrant: Fidelity Advisor Series II
- LEI: WIIX6BNCF8B12FQGCD90
- Net assets: $766.8M
- Total assets: $1.3B
- As of: 2026-05-31

## Advisers

- [FMR Investment Management (UK) Limited (Subadvisor)](https://search.stillhousedata.com/firm/108273)
- [Fidelity Management & Research Company LLC (Advisor)](https://search.stillhousedata.com/firm/108281)
- [Fidelity Management & Research (Hong Kong) Limited (Subadvisor)](https://search.stillhousedata.com/firm/148045)
- [Fidelity Management & Research (Japan) Limited (Subadvisor)](https://search.stillhousedata.com/firm/148239)

## Top holdings (200 reported)

_Showing 15 of 200 holdings by value._

| Holding | Ticker | Value | % of fund |
| --- | --- | --- | --- |
| [FNMA/FHLG TBA ISSUER](https://search.stillhousedata.com/security/01F020661) | — | $65.8M | 857.76% |
| [GNMA II GTD PASS THRU CTF MULTIPLE ISSUER](https://search.stillhousedata.com/security/21H052660) | — | $54.5M | 710.61% |
| [FNMA/FHLG TBA ISSUER](https://search.stillhousedata.com/security/01F020679) | — | $49.4M | 644.15% |
| [GNMA II GTD PASS THRU CTF MULTIPLE ISSUER](https://search.stillhousedata.com/security/21H052678) | — | $36.3M | 473.28% |
| [Fidelity Revere Street Trust](https://search.stillhousedata.com/security/31635A105) | — | $26.5M | 345.74% |
| [GNMA II GTD PASS THRU CTF MULTIPLE ISSUER](https://search.stillhousedata.com/security/21H060663) | — | $22.8M | 297.28% |
| [GNMA II GTD PASS THRU CTF MULTIPLE ISSUER](https://search.stillhousedata.com/security/21H050664) | — | $22.7M | 296.29% |
| [FNMA/FHLG TBA ISSUER](https://search.stillhousedata.com/security/01F050668) | — | $16.8M | 218.53% |
| [GNMA II GTD PASS THRU CTF MULTIPLE ISSUER](https://search.stillhousedata.com/security/21H060671) | — | $15.0M | 195.53% |
| [FED HOME LOAN MTG CORP - GOLD](https://search.stillhousedata.com/security/3142J6DG5) | — | $11.8M | 154.43% |
| [FNMA/FHLG TBA ISSUER](https://search.stillhousedata.com/security/01F042665) | — | $11.8M | 154.05% |
| [FNMA/FHLG TBA ISSUER](https://search.stillhousedata.com/security/01F030660) | — | $10.8M | 141.30% |
| [FNMA/FHLG TBA ISSUER](https://search.stillhousedata.com/security/01F060667) | — | $10.8M | 140.83% |
| [UST NOTES](https://search.stillhousedata.com/security/91282CQA2) | — | $9.6M | 125.71% |
| [FED HOME LOAN MTG CORP - GOLD](https://search.stillhousedata.com/security/3132DNB36) | — | $8.7M | 113.78% |

## Net asset history

| Report date | Net assets |
| --- | --- |
| 2026-05-31 | $766.8M |
| 2026-02-28 | $745.5M |
| 2025-11-30 | $698.2M |
| 2025-08-31 | $669.4M |
| 2025-05-31 | $608.5M |
| 2025-02-28 | $608.7M |
| 2024-11-30 | $600.8M |
| 2024-08-31 | $607.0M |

## More

- [Registrant: Fidelity Advisor Series II](https://search.stillhousedata.com/registrant/795422)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/fund/S000005133.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.