GMOBX Performance — GMO Asset Allocation Bond Fund, Class III
Data updated: 2026-07-29
GMOBX returned −6.94% over one year to Jul 2023. The annualised 3-year return is −3.83%. The fund trailed its Alternative category average: $100 invested three years ago grew to $89, against $109 for the category, and to $93 over one year, against $105. Volatility over the past three years was 7.86% a year. In the 12 months to May 2026 the fund took in a net $83.5M, and assets reached $117.73M.
GMOBX Growth of $100
What $100 invested in GMO Asset Allocation Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Alternative category average over the same months.
| Period | GMOBX | Category average |
|---|---|---|
| 1 year (Aug 2022 – Jul 2023) | $93 | $105 |
| 3 years (Aug 2020 – Jul 2023) | $89 | $109 |
| Since data start (Sep 2019 – Jul 2023) | $96 | $114 |
GMOBX Trailing Returns
Total returns to Jul 2023, from SEC N-PORT.
| Period | Total return |
|---|---|
| 1 year | −6.94% |
| 3 years (annualised) | −3.83% |
GMOBX Annual Returns
Calendar-year total returns of GMO Asset Allocation Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2023 (Jan–Jul) | +0.88% |
| 2022 | −14.95% |
| 2021 | +1.33% |
| 2020 | +11.14% |
| 2019 (Sep–Dec) | −0.70% |
GMOBX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | +3.4% | −3.4% | +5.5% | +0.6% | −1.5% | −2.1% | −1.3% | — | — | — | — | — |
| 2022 | −2.1% | −0.4% | −4.0% | −4.0% | +0.6% | −1.0% | +3.0% | −3.9% | −4.6% | −1.4% | +3.5% | −1.3% |
| 2021 | +0.5% | −1.9% | −0.4% | +1.9% | +0.3% | +0.9% | +1.9% | −0.4% | −1.6% | −0.6% | +1.1% | −0.5% |
| 2020 | +2.3% | +0.8% | −1.0% | +2.4% | +0.7% | +1.0% | +2.1% | +1.3% | −0.5% | −0.8% | +0.9% | +1.3% |
| 2019 | — | — | — | — | — | — | — | — | −1.2% | 0.0% | 0.0% | +0.5% |
GMOBX Risk
Risk measures from monthly returns over Aug 2020 – Jul 2023.
- 3-year volatility (annualised): 7.86%
- 3-year Sharpe ratio: -1.06 (vs 4.5% risk-free rate)
- Best month: +5.47% (Mar 2023)
- Worst month: −4.64% (Sep 2022)
GMOBX Fund Flows
Monthly money in and out of GMO Asset Allocation Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $83.5M
- 12-month gross sales (incl. reinvestments): $89.8M
- Sales ÷ redemptions: 14.22×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| May 2026 | $7.4M | $0 | $7.4M |
| Apr 2026 | $8.4M | $0 | $8.4M |
| Mar 2026 | $4.1M | $0 | $4.1M |
| Feb 2026 | $48.5M | $0 | $48.5M |
| Jan 2026 | $5.1M | $0 | $5.1M |
| Dec 2025 | $2.8M | $0 | $2.8M |
| Nov 2025 | $9.4M | $0 | $9.4M |
| Oct 2025 | $0 | $0 | $0 |
| Sep 2025 | $161K | $0 | $161K |
| Aug 2025 | $0 | $1.4M | −$1.4M |
| Jul 2025 | $1.5M | $589K | $893K |
| Jun 2025 | $2.5M | $4.3M | −$1.8M |
GMOBX Assets Under Management
Net assets of GMO Asset Allocation Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-05-31 | $117.73M |
| 2026-02-28 | $105.96M |
| 2025-11-30 | $48.31M |
| 2025-08-31 | $37.10M |
| 2025-05-31 | $38.25M |
| 2025-02-28 | $41.38M |
| 2024-11-30 | $39.90M |
| 2024-08-31 | $44.08M |
| 2024-05-31 | $40.45M |
| 2024-02-29 | $40.23M |
| 2023-11-30 | $41.58M |
| 2023-08-31 | $19.76M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.