DIAMX — Diamond Hill Long-Short Fund
Data updated: 2026-08-31
DIAMX — Diamond Hill Long-Short Fund. United States Large Cap Blend / Core Equity · $2.11B AUM. Holdings, fees, performance and SEC filings.
DIAMX Fund Overview
DIAMX — Diamond Hill Long-Short Fund is a US mutual fund managed by Diamond Hill Funds, categorised as United States Large Cap Blend / Core Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Diamond Hill Funds
- Category: United States Large Cap Blend / Core Equity
- Assets under management: $2.11B
- 1-year return: 1.5%
- Ticker: DIAMX
- SEC CIK: 0001032423
- SEC series ID: S000003156
- Share class ID: C000008536
DIAMX Holdings
Top 10 holdings of Diamond Hill Long-Short Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| State Street Institutional Investment Trust | 6.32% |
| Taiwan Semiconductor Manufacturing Company Ltd. | 5.43% |
| Microsoft Corp. | 4.93% |
| Alphabet, Inc. | 4.52% |
| Meta Platforms, Inc. | 4.36% |
| American International Group, Inc. | 3.93% |
| Abbott Laboratories | 2.89% |
| Aon PLC | 2.87% |
| Sentinelone, Inc. | 2.82% |
| Amazon.com, Inc. | 2.81% |
DIAMX Portfolio Allocation
Asset-class allocation of Diamond Hill Long-Short Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 94.2% |
| Cash & Equivalents | 6.5% |
DIAMX Performance
Total returns for DIAMX (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | -7.2% |
| 1 year | 1.5% |
| 3 years (annualised) | 9.4% |
| 5 years (annualised) | -0.8% |
DIAMX Risk Information
Risk metrics for DIAMX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 7.8%
DIAMX Costs and Fees
DIAMX costs about $170 per $10,000 invested per year in fund expenses.
- Net expense ratio: 1.70%
- Gross expense ratio: 1.70%
- Portfolio turnover: 67%
- Brokerage commissions: 3.26 bps of average net assets (SEC N-CEN)
DIAMX Cashflows
Over the 12 months to 2026-06, Diamond Hill Long-Short Fund had net inflows of $173.19M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | −$45.61M |
| 2026-05 | $20.77M |
| 2026-04 | −$2.24M |
| 2026-03 | $520.79K |
| 2026-02 | −$6.97M |
| 2026-01 | −$38.58M |
DIAMX Debt Constituents
No individual debt constituents are reported in Diamond Hill Long-Short Fund's latest SEC N-PORT filing.
DIAMX Prospectus and SEC Filings
Official Diamond Hill Long-Short Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2026-02-25
- Prospectus (485BPOS) — filed 2025-02-25
- Prospectus (485BPOS) — filed 2024-02-26
- Portfolio holdings (N-PORT) — filed 2026-08-31
- Portfolio holdings (N-PORT) — filed 2026-06-01
- Portfolio holdings (N-PORT) — filed 2026-03-02
- Annual census (N-CEN) — filed 2026-03-16
- Annual census (N-CEN) — filed 2025-03-13
Related Funds
Other United States Large Cap Blend / Core Equity 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.