as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
got a large cash sum, wanna buy stocks. should i buy all at once, or spread it over time?
user
depends on what you are, an investor or a speculator. an investor will look at an 'indefinite' investment period. a speculator will be after a fast buck. if you are an investor, buy your stock once as that will cost less commissions. after all, you'll sell your stock in 10, 15, 20 years.
assistant