Fidelity Institutional Asset Management Government Income Portfolio
Data updated: 2026-08-27
C000100091 — Fidelity Institutional Asset Management Government Income Portfolio. Long Treasury / Sovereign Bond. Holdings, fees, performance and SEC filings.
C000100091 Fund Overview
Fidelity Institutional Asset Management Government Income Portfolio is a US mutual fund managed by Brighthouse Funds Trust I, categorised as Long Treasury / Sovereign Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Brighthouse Funds Trust I
- Category: Long Treasury / Sovereign Bond
- Assets under management: $452.99M
- 1-year return: 3.6%
- SEC CIK: 0001126087
- SEC series ID: S000032439
- Share class ID: C000100091
C000100091 Investment Objective and Strategy
Fidelity Institutional Asset Management Government Income Portfolio describes its objective and strategy as follows, from its latest prospectus filed with the SEC by Brighthouse Funds Trust I.
Investment objective
Seeks a high level of current income, consistent with preservation of principal.
Principal investment strategy
Western Asset Management Company, LLC (Western Asset or Subadviser), subadviser to the Portfolio, invests, under normal circumstances, at least 80% of the Portfolios net assets in U.S. Government securities and instruments related to U.S. Government securities, such as repurchase agreements on such securities. Certain issuers of U.S. Government securities are sponsored or chartered by Congress but their securities are neither issued nor guaranteed by the U.S. Treasury. Western Asset may also invest the Portfolios assets in mortgage-backed and asset-backed securities, including collateralized mortgage obligations, and foreign securities. The Portfolios investments in foreign securities will be limited to 10% of total assets. Western Asset uses a blended index comprised of the Bloomberg 5+ Year Treasury Index (40%), the Bloomberg U.S.
MBS Index (35%) and the Bloomberg U.S. Agency Bond Index (25%) as a guide in structuring the Portfolio and selecting its investments. Western Asset manages the Portfolio to have similar overall interest rate risk to the blended index. Investment Selection Western Assets investment approach revolves around an investment outlook developed by a team of senior professionals that reviews developments in the economy and the markets and establishes a recommended portfolio structure, including targets for duration, yield curve exposure and sector allocation. Western Assets investment team implements the strategy in a manner consistent with the investment policies of the Portfolio, using information on the relative credit strength, liquidity, issue structure, event risk, covenant protection and market valuation of available securities.
Western Asset may engage in transactions that have a leveraging effect on the Portfolio, including investments in derivatives such as options, options on futures contracts, currency-related derivatives, swaps, structured notes and inverse floaters, regardless of whether the Portfolio may own the asset, instrument or components of the index underlying the derivative, and forward-settling securities. Western Asset may invest a significant portion of the Portfolios assets in these types of investments and may take short positions in futures contracts and forward-settling securities. Western Asset may also invest in mortgage dollar roll transactions. Mortgage dollar rolls are transactions in which the Portfolio sells securities for delivery in the current month and simultaneously contracts with the same counterparty to repurchase similar (same type, coupon and maturity) but not necessarily identical securities on a specified future date.
Western Asset may invest in Treasury Inflation Protected Securities (TIPS) and other inflation-linked bonds. For more information about the types of investments in which the Portfolio may invest, please see Investment Strategies and Risks in the Statement of Additional Information.
C000100091 Holdings
Top 10 holdings of Fidelity Institutional Asset Management Government Income Portfolio by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| United States Treasury | 9.67% |
| Rfc Principal Strip | 6.76% |
| Rfc Principal Strip | 6.56% |
| Freddie Mac | 6.10% |
| United States Treasury | 4.57% |
| United States Treasury | 3.54% |
| Federal Farm Credit Bank | 3.15% |
| Freddie Mac | 2.90% |
| United States Treasury | 2.27% |
| Fixed Income Clearing Corp. | 2.14% |
C000100091 Portfolio Allocation
Asset-class allocation of Fidelity Institutional Asset Management Government Income Portfolio by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 65.3% |
| Securitized | 37.8% |
| Cash & Equivalents | 2.1% |
C000100091 Performance
Total returns for C000100091 (as of 2026-10-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.6% |
| 1 year | 3.6% |
| 3 years (annualised) | 3.4% |
| 5 years (annualised) | -0.8% |
C000100091 Risk Information
Risk metrics for C000100091, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.8%
C000100091 Costs and Fees
C000100091 costs about $74 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.74%
- Gross expense ratio: 0.78%
- Portfolio turnover: 155%
- Brokerage commissions: 0.22 bps of average net assets (SEC N-CEN)
C000100091 Cashflows
Over the 12 months to 2026-06, Fidelity Institutional Asset Management Government Income Portfolio had net outflows of $60.35M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $12.65M |
| 2026-05 | −$4.16M |
| 2026-04 | −$7.29M |
| 2026-03 | −$4.63M |
| 2026-02 | −$4.43M |
| 2026-01 | −$6.22M |
C000100091 Debt Constituents
Largest debt holdings of Fidelity Institutional Asset Management Government Income Portfolio by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Treasury | 9.67% |
| Rfc Principal Strip | 6.76% |
| Rfc Principal Strip | 6.56% |
| Freddie Mac | 6.10% |
| United States Treasury | 4.57% |
| United States Treasury | 3.54% |
| Federal Farm Credit Bank | 3.15% |
| Freddie Mac | 2.90% |
| United States Treasury | 2.27% |
| Aid-Israel | 2.11% |
C000100091 Prospectus and SEC Filings
Official Fidelity Institutional Asset Management Government Income Portfolio filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-24
- Prospectus (485BPOS) — filed 2025-04-25
- Prospectus (485BPOS) — filed 2024-04-25
- Portfolio holdings (N-PORT) — filed 2026-08-27
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-27
- Annual census (N-CEN) — filed 2026-03-11
- Annual census (N-CEN) — filed 2025-03-14
Related Funds
Other Long Treasury / Sovereign Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.