【 Quantitative suddenly release restrictions! What signal? 】 On September 22, the investment promotion quantitative selection, which has lowered the purchase limit several times this year, suddenly "loosened the brake" and raised the purchase limit. At present, a number of public offering active quantitative products that have attracted market attention are still in a restricted state. Industry insiders said that "scale, income and volatility" is an impossible triangle of quantitative strategy, and the three should be balanced to control the size of the fund at a reasonable level.