Chinese index futures midday: CSI 300 index futures (IF) most-active contract down 0.50%, SSE 50 index futures (IH) down 0.29%, CSI 500 index futures (IC) down 0.36%, CSI 1000 index futures (IM) down 0.05%.

9月22日A股低于3%换手率股票连降三日至70.52%，高于5%换手率股票占比从上周刷新的两年低点回升至15.42%，继续向阈值水平靠近；整体来看，换手率暂时止跌，留意能否打破7月以来震荡下行趋势。 -------- 注：1、当换手率低于3%的股票占比上升接近中长期的高位，尤其是接近历史高位附近（图中虚线，图为反转走势）时，意味着市场很有可能遇到一个阶段低点，容易产生反转或反弹。 2、当高换手率高于5%的股票占市场总数比例保持在阈值（图中虚线）上方，市场才会出现强的赚钱效应，使得行情具有持续性。牛市的时候，该指标会持续保持在阈值上方，市场迎来普涨行情；而熊市的时候，该指标大多时候在阈值下方，偶尔超过阈值反而要小心冲高回落的风险。

Copper eased from near-record highs as traders reevaluated the US rate outlook amid oil price swings and hawkish Fed comments. LME copper fell as much as 0.8% on Wednesday, snapping a six-day advance. Several Fed officials voiced concern about inflation—Richmond Fed's Barkin said inflation shocks may take time to fade and others signaled possible further tightening. A stronger dollar on rising bets of tighter Fed policy weighed on dollar-priced metals. Nickel slid 0.3%, giving back part of Tuesday's 1.9% gain after drought-related water shortages forced smelters at Indonesia's Morowali processing hub to cut nickel pig iron output.