DCA(Dollar-cost Averaging): invest a certain amount of funds at regular intervals
Grid trading: profit in the volatile market.
Futures-spot arbitrage: low-risk arbitrage between futures and spot markets.
Trend following: profit in continuous rise or fall in the market.
Cross-exchange arbitrage: use the spread between exchanges to arbitrage.
Pairs trading: use the correlation between currencies to arbitrage.
Market-making strategy: super high frequency trading, profit from the bid-ask spread.