第三方投资管理是指由独立的投资管理机构或专业投资经理人提供的投资管理服务，与传统的内部投资管理部门或自行投资方式相对。第三方投资管理机构通常以委托代理的方式为投资者管理资金，以实现投资目标。

在投资领域中，第三方投资管理机构扮演着重要的角色，他们拥有专业的投资技能和经验，能够为投资者提供更加全面和专业的投资服务。与自行投资相比，第三方投资管理机构具有更加广泛的投资视野和更加丰富的投资经验，能够更好地把握市场机会和降低投资风险。同时，由于第三方投资管理机构与投资者之间不存在利益冲突，因此能够更加客观地评估投资价值和风险，为投资者提供更加公正和透明的投资建议。

英文对照：

Third-party investment management refers to the investment management services provided by independent investment management institutions or professional investment managers. This is in contrast to traditional internal investment management departments or self-investment methods. Third-party investment management institutions typically manage funds for investors in a principal or agent capacity to achieve investment objectives.

In the investment industry, third-party investment management institutions play an important role. They possess professional investment skills and experience, and are able to provide investors with more comprehensive and professional investment services. Compared with self-investment, third-party investment management institutions have a broader investment vision and richer investment experience, which allows them to better capture market opportunities and reduce investment risks. Additionally, because third-party investment management institutions do not have conflicts of interest with investors, they can more objectively assess investment values and risks, and provide investors with more impartial and transparent investment advice.