A portfolio is a curated collection of someone’s best work, skills, and achievements, used to showcase their abilities for career, academic, or personal branding, often presented as a website or digital collection. In finance, it refers to a collection of investments like stocks, bonds, and cash, managed for a specific investor goal, while in government, it means a minister’s office. Essentially, a portfolio serves as a tangible representation (physical or digital) of expertise, progress, or holdings, varying by field.