GMBZX — Impact Bond Fund
Data updated: 2026-08-27
GMBZX — Impact Bond Fund. Long Total / Aggregate Bond · $95.89M AUM · 0.73% expense ratio · 2.0% 1-yr return. Holdings, fees, performance and SEC filings.
GMBZX Fund Overview
GMBZX — Impact Bond Fund is a US mutual fund managed by GuideStone Funds, categorised as Long Total / Aggregate Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: GuideStone Funds
- Category: Long Total / Aggregate Bond
- Assets under management: $95.89M
- 1-year return: 2.0%
- Ticker: GMBZX
- SEC CIK: 0001131013
- SEC series ID: S000079509
- Share class ID: C000240563
GMBZX Holdings
Top 10 holdings of Impact Bond Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Guidestone Funds | 7.34% |
| United States Of America - Bureau Of The Public Debt | 3.08% |
| Federal National Mortgage Association | 2.83% |
| United States Of America - Bureau Of The Public Debt | 2.63% |
| United States Of America - Bureau Of The Public Debt | 2.11% |
| United States Of America - Bureau Of The Public Debt | 1.91% |
| Chicago Board of Trade | 1.70% |
| United States Of America - Bureau Of The Public Debt | 1.57% |
| United States Of America - Bureau Of The Public Debt | 1.55% |
| Federal Home Loan Mortgage Corp. | 1.49% |
GMBZX Portfolio Allocation
Asset-class allocation of Impact Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Fixed Income | 54.6% |
| Securitized | 42.2% |
| Cash & Equivalents | 8.0% |
| Real Estate | 1.7% |
GMBZX Performance
Total returns for GMBZX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.0% |
| 1 year | 2.0% |
| 3 years (annualised) | 3.1% |
GMBZX Risk Information
Risk metrics for GMBZX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.0%
GMBZX Costs and Fees
GMBZX costs about $73 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.73%
- Gross expense ratio: 1.21%
- Portfolio turnover: 114%
- Brokerage commissions: 0.08 bps of average net assets (SEC N-CEN)
GMBZX Cashflows
Over the 12 months to 2026-06, Impact Bond Fund had net inflows of $8.23M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $354.32K |
| 2026-05 | $1.80M |
| 2026-04 | $1.65M |
| 2026-03 | −$833.11K |
| 2026-02 | $970.89K |
| 2026-01 | −$257.93K |
GMBZX Debt Constituents
Largest debt holdings of Impact Bond Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| United States Of America - Bureau Of The Public Debt | 3.08% |
| United States Of America - Bureau Of The Public Debt | 2.63% |
| United States Of America - Bureau Of The Public Debt | 2.11% |
| United States Of America - Bureau Of The Public Debt | 1.91% |
| United States Of America - Bureau Of The Public Debt | 1.57% |
| United States Of America - Bureau Of The Public Debt | 1.55% |
| Agilent Technologies, Inc. | 1.45% |
| United States Of America - Bureau Of The Public Debt | 1.44% |
| Low Income Investment Fund | 1.37% |
| United States Of America - Bureau Of The Public Debt | 1.29% |
GMBZX Prospectus and SEC Filings
Official Impact Bond Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-04-29
- Prospectus (485BPOS) — filed 2025-04-29
- Prospectus (485BPOS) — filed 2024-04-26
- Portfolio holdings (N-PORT) — filed 2026-08-27
- Portfolio holdings (N-PORT) — filed 2026-05-28
- Portfolio holdings (N-PORT) — filed 2026-02-23
- Annual census (N-CEN) — filed 2026-03-11
- Annual census (N-CEN) — filed 2025-03-11
Related Funds
Other Long Total / Aggregate 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.