Most of the time there have been what might be termed long worms as the market moved sideways, such that the CSI 300 index, has averaged the same level over the past five years.
1. as the market moved sideways 时间状语。“随着市场的横盘整理”（股市语）

2. such that...也可以引导“目的或结果状语从句”，跟 so that 类似。例如：

The objective is to obtain a balance such that the discontent disappears.
其目的是获得一种平衡，使不满情绪消失。

Some people are not "totally depraved", such that they cannot be persuaded by reasoning with them.
有些人并不是“完全堕落”，以至于无法通过与他们讲理来说服他们。