| Category | Fund Name | Class | Net Assets ($ M)* | 2025 | 2024 | 2023 |
|---|---|---|---|---|---|---|
| Large-Cap-Growth | Harbor Funds Harbor Capital Appreciation Fund + | Institutional Class Shares | 33040 | 2.2 | 17.8 | 53.7 |
| Large-Cap-Growth | Harbor Funds Harbor Strategic Growth Fund + | Institutional Class Shares | 86.7 | 0 | 2.2 | 7.3 |
| Large-Cap-Growth | Harbor Funds Harbor Capital Appreciation Fund | Investor Class Shares | 33040 | -4.6 | 16.2 | 53.2 |
| Large-Cap-Growth | Harbor Funds Harbor Strategic Growth Fund | Investor Class Shares | 86.7 | 0 | 2 | 6.5 |
| Large-Cap-Growth | Harbor Funds Harbor Capital Appreciation Fund | Retirement Class Shares | 33040 | -5.7 | 18 | 53.9 |
| Large-Cap-Growth | Harbor Funds Harbor Strategic Growth Fund | Retirement Class Shares | 86.7 | 0 | 2.2 | 7.4 |
| Large-Cap-Growth | Harbor Funds Harbor Capital Appreciation Fund | Administrative Class Shares | 33040 | 0.6 | 16.9 | 53.3 |
| Large-Cap-Growth | Harbor Funds Harbor Strategic Growth Fund | Administrative Class Shares | 86.7 | 0 | 0 | 0 |
| Large-Cap-Value | Harbor Funds Harbor Large Cap Value Fund + | Institutional Class Shares | 2350 | 3 | -0.3 | 14.8 |
| Large-Cap-Value | Harbor Funds Harbor Large Cap Value Fund | Administrative Class Shares | 2350 | -0 | -0.2 | 14.8 |
| Large-Cap-Value | Harbor Funds Harbor Large Cap Value Fund | Investor Class Shares | 2350 | 2.9 | -0.3 | 14.9 |
| Large-Cap-Value | Harbor Funds Harbor Large Cap Value Fund | Retirement Class Shares | 2350 | -3.9 | -0.4 | 14.9 |
| Mid-Cap-Growth | Harbor Funds Harbor Mid Cap Growth Fund + | Institutional Class Shares | 201 | -1 | 14.4 | 33 |
| Mid-Cap-Growth | Harbor Funds Harbor Mid Cap Growth Fund | Investor Class Shares | 201 | -0.8 | 14 | 32.4 |
| Mid-Cap-Growth | Harbor Funds Harbor Mid Cap Growth Fund | Retirement Class Shares | 201 | -0.9 | 14.4 | 33.3 |
| Mid-Cap-Growth | Harbor Funds Harbor Mid Cap Growth Fund | Administrative Class Shares | 201 | -0.9 | 14 | 32.7 |
| Mid-Cap-Value | Harbor Funds Harbor Mid Cap Value Fund + | Institutional Class Shares | 421 | -1.7 | 5.9 | 8.5 |
| Mid-Cap-Value | Harbor Funds Harbor Mid Cap Value Fund | Investor Class Shares | 421 | -11.7 | 6 | 8.5 |
| Mid-Cap-Value | Harbor Funds Harbor Mid Cap Value Fund | Retirement Class Shares | 421 | -7.1 | 5.9 | 8.5 |
| Mid-Cap-Value | Harbor Funds Harbor Mid Cap Value Fund | Administrative Class Shares | 421 | -2.5 | 6 | 8.6 |
| Multi-Cap-Core | Harbor Overseas Fund + | Institutional Class Shares | 63.61 | 10.7 | 8.5 | 11.4 |
| Multi-Cap-Core | Harbor Overseas Fund | Investor Class Shares | 63.61 | 12.1 | 8.7 | 11.4 |
| Multi-Cap-Core | Harbor Overseas Fund | Retirement Class Shares | 63.61 | 12.3 | 8.5 | 11.4 |
| Multi-Cap-Growth | Harbor International Growth Fund + | Institutional Class Shares | 628.72 | 0 | 12 | 9.9 |
| Multi-Cap-Growth | Harbor Global Leaders Fund + | Institutional Class Shares | 100.82 | 0 | 0 | 12.1 |
| Multi-Cap-Growth | Harbor International Growth Fund | Administrative Class Shares | 628.72 | 0 | 11.8 | 9.9 |
| Multi-Cap-Growth | Harbor International Growth Fund | Investor Class Shares | 628.72 | 0 | 11.8 | 9.7 |
| Multi-Cap-Growth | Harbor International Growth Fund | Retirement Class Shares | 628.72 | 0 | 12.1 | 9.9 |
| Multi-Cap-Growth | Harbor Global Leaders Fund | Administrative Class Shares | 100.82 | 0 | 0 | 11.9 |
| Multi-Cap-Growth | Harbor Global Leaders Fund | Investor Class Shares | 100.82 | 0 | 0 | 11.9 |
| Multi-Cap-Growth | Harbor Global Leaders Fund | Retirement Class Shares | 100.82 | 0 | 0 | 12.2 |
| Small-Cap-Core | Harbor International Small Cap Fund + | Institutional Class Shares | 65.3 | 5.1 | -5.7 | 6.8 |
| Small-Cap-Core | Harbor International Small Cap Fund | Administrative Class Shares | 65.3 | 5.5 | -5.6 | 8.6 |
| Small-Cap-Core | Harbor International Small Cap Fund | Investor Class Shares | 65.3 | 7.1 | -5.6 | 6.9 |
| Small-Cap-Core | Harbor International Small Cap Fund | Retirement Class Shares | 65.3 | 7 | -5.8 | 6.9 |
| Small-Cap-Growth | Harbor Funds Harbor Small Cap Growth Fund + | Institutional Class Shares | 984440 | -1.4 | 5.6 | 22.2 |
| Small-Cap-Growth | Harbor Funds Harbor Small Cap Growth Fund | Investor Class Shares | 984440 | -17.2 | 4.5 | 21.7 |
| Small-Cap-Growth | Harbor Funds Harbor Small Cap Growth Fund | Retirement Class Shares | 984440 | -7.8 | 5.7 | 22 |
| Small-Cap-Growth | Harbor Funds Harbor Small Cap Growth Fund | Administrative Class Shares | 984440 | -1.5 | 5 | 21.9 |
| Small-Cap-Value | Harbor Small Cap Value Fund + | Institutional Class Shares | 2490 | -17.3 | 10.2 | 7.6 |
| Small-Cap-Value | Harbor Small Cap Value Fund | Investor Class Shares | 2490 | -9.5 | 10.2 | 7.3 |
| Small-Cap-Value | Harbor Small Cap Value Fund | Retirement Class Shares | 2490 | -18.9 | 10.2 | 7.6 |
| Small-Cap-Value | Harbor Small Cap Value Fund | Administrative Class Shares | 2490 | -5.8 | 10.3 | 7.8 |
* Net Assets include for all classes