Hedge funds: a combination of medium and long-term, focusing on long-term operations

Macro funds: long-term, focusing on long-term operations

*** Same fund: medium-term Long-term combination, mainly long-term

CTA Fund: short- and medium-term, long-short combination

Index Fund: long-term, long-term

The operating techniques of index funds

Commodity Index Fund: Long-term investment, mainly long-term.

Commodity Index Funds—Energy, Metals, Agricultural Products

Commodity Index Funds generally buy futures, options, and sometimes options.

By adopting rollover-carry or roll, for example, bulls continue to roll back in case of back.

When you have more money, buy more; when you have less money, sell more.