DIAMX Performance — Diamond Hill Long-Short Fund, Investor Class
Data updated: 2026-08-31
DIAMX returned −7.16% year to date and +1.46% over one year to Jun 2026. Over one year the fund trailed its US Large Blend category average: $100 grew to $101, against $118 for the category. Volatility over the past 12 months was 7.84% a year. In the 12 months to Jun 2026 the fund took in a net $173.2M, and assets reached $2.11B.
DIAMX Growth of $100
What $100 invested in Diamond Hill Long-Short Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the US Large Blend category average over the same months.
| Period | DIAMX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $101 | $118 |
| 3 years (Jul 2023 – Jun 2026) | $131 | $157 |
| 5 years (Jul 2021 – Jun 2026) | $96 | $161 |
| Since data start (Jul 2019 – Jun 2026) | $65 | $229 |
DIAMX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | −7.16% |
| 1 year | +1.46% |
3- and 5-year figures withheld: returns differ from sibling classes.
DIAMX Annual Returns
Calendar-year total returns of Diamond Hill Long-Short Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | −7.16% |
| 2025 | +18.75% |
| 2024 | +9.94% |
| 2023 | +12.12% |
| 2022 | −8.74% |
| 2021 | −35.63% |
| 2020 | −18.48% |
| 2019 (Jul–Dec) | −0.29% |
DIAMX 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | −0.6% | 0.0% | −4.4% | +2.9% | −2.1% | −3.1% | — | — | — | — | — | — |
| 2025 | +4.2% | −0.4% | −1.0% | −1.3% | +4.1% | +2.9% | +0.8% | +1.3% | +1.8% | +1.1% | +1.6% | +2.3% |
| 2024 | +2.7% | +2.0% | +4.6% | −2.0% | +2.5% | +0.1% | +0.1% | +1.2% | −0.2% | −1.5% | +0.6% | −0.2% |
| 2023 | +6.7% | −2.5% | −3.3% | +2.4% | −2.2% | +3.0% | +2.4% | −0.8% | −0.4% | −1.6% | +5.2% | +3.2% |
| 2022 | +2.1% | −2.4% | +0.5% | −4.5% | +2.8% | −7.5% | +4.0% | −2.1% | −7.0% | +5.3% | +2.4% | −1.7% |
| 2021 | −7.6% | +2.0% | −1.0% | −1.1% | −3.2% | −6.8% | −3.7% | −4.0% | −6.2% | −2.2% | −7.8% | −1.1% |
| 2020 | −0.1% | −0.1% | −0.2% | +3.3% | −2.5% | −3.4% | −3.8% | −2.8% | −7.7% | −5.0% | +5.7% | −3.0% |
| 2019 | — | — | — | — | — | — | 0.0% | −0.1% | 0.0% | 0.0% | 0.0% | −0.1% |
DIAMX Risk
Risk measures from monthly returns over Jul 2025 – Jun 2026.
- 1-year volatility (annualised): 7.84%
- Best month: +2.89% (Apr 2026)
- Worst month: −4.41% (Mar 2026)
DIAMX Fund Flows
Monthly money in and out of Diamond Hill Long-Short Fund, from SEC Form N-PORT.
- 12-month net flow: $173.2M
- 12-month gross sales (incl. reinvestments): $1.0B
- Sales ÷ redemptions: 1.21×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $50.2M | $95.8M | −$45.6M |
| May 2026 | $163.5M | $142.7M | $20.8M |
| Apr 2026 | $26.2M | $28.5M | −$2.2M |
| Mar 2026 | $47.5M | $47.0M | $521K |
| Feb 2026 | $68.1M | $75.0M | −$7.0M |
| Jan 2026 | $56.8M | $95.4M | −$38.6M |
| Dec 2025 | $114.9M | $85.4M | $29.4M |
| Nov 2025 | $77.7M | $65.0M | $12.7M |
| Oct 2025 | $175.1M | $62.3M | $112.8M |
| Sep 2025 | $37.1M | $40.8M | −$3.8M |
| Aug 2025 | $172.7M | $65.7M | $106.9M |
| Jul 2025 | $26.3M | $39.1M | −$12.8M |
DIAMX Assets Under Management
Net assets of Diamond Hill Long-Short Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $2.11B |
| 2026-03-31 | $2.19B |
| 2025-12-31 | $2.34B |
| 2025-09-30 | $2.11B |
| 2025-06-30 | $1.94B |
| 2025-03-31 | $1.93B |
| 2024-12-31 | $1.68B |
| 2024-09-30 | $1.80B |
| 2024-06-30 | $1.83B |
| 2024-03-31 | $1.84B |
| 2023-12-31 | $1.73B |
| 2023-09-30 | $1.71B |
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.