CSI 500 index futures (IC) front contract up 2.00% intraday at 6604.8 pts. CSI 1000 index futures (IM) front contract up 2.00% intraday at 6533.0 pts.

Deutsche Bank strategists say the US Treasury has asked primary dealers for views on structural shifts in investor demand and expectations for future Treasury auction sizes — a key step toward altering issuance. DB's analysis of Treasury holdings and portfolio-weighted average maturity (WAM) shows demand for long-dated Treasuries has weakened, driven by shrinking buy-and-hold portfolios and a shift toward shorter tenors. With larger financing needs ahead and WAM near historic highs, strategists say there is increasing justification to proactively shorten the maturity profile of new issuance.

Spanish media, citing rescue agencies, report a high-speed train collision near Toledo on the 28th has killed at least 39.