R****r
发帖数: 227 | 1 1. Investors
- buy assets and get future returns from them
- as a group: receive average market returns (minus cost)
- both non-professional and professional
2. Speculators
- buy low and (hopefully) sell high
- as a group: receive no more than investors
- both non-professional and professional
3. Market makers
- buy and sell, make money on spreads, etc.
- increase market liquidity
- professional
4. Arbitrageurs
- exploit market inefficiencies
- optimizes the market
- prof |
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