PET Copper Foil Concept Falls 1.79% as Main Funds Net Outflow RMB 488 Million
On September 17, 2026, the PET copper foil concept fell 1.79%, ranking among the worst-performing concept sectors. Defu Technology led declines with a 4.31% drop and the largest main-fund net outflow of RMB 423 million. The sector saw a total main-fund net outflow of RMB 488 million, with 30 stocks recording outflows and five exceeding RMB 100 million. Zhongtian Technology, Woguang Optoelectronics and Jiayuan Technology led inflows.
As of the close on September 17, 2026, the PET copper foil concept fell 1.79%, ranking among the top decliners among concept sectors. Within the sector, Taijin New Energy, Yinglian Shares and Defu Technology led the declines, with Taijin New Energy down 6.30%, Yinglian Shares down 6.12%, Defu Technology down 4.31%, Dongwei Technology down 4.10% and Hangdian Shares down 4.07%. Eight stocks in the sector rose on the day, with Zhongtian Technology, Woguang Optoelectronics and Jinjia Shares leading the gains at 3.41%, 2.59% and 1.95%, respectively.
Among other concept sectors on the same day, genetically modified organisms rose 4.04%, corn gained 3.74%, the grain concept rose 2.85%, soybeans added 2.16%, the CRO concept rose 2.09%, agricultural planting gained 1.82%, cellular immunotherapy rose 1.72%, land transfer rose 1.65%, recombinant protein rose 1.65% and childcare services rose 1.48%. On the downside, lead metal fell 2.31%, zinc metal dropped 2.17%, the gold concept declined 1.87%, PET copper foil fell 1.79%, the MLCC concept dropped 1.72%, copper metal fell 1.53%, nickel metal declined 1.52%, combustible ice fell 1.42%, the minor metals concept dropped 1.32% and ultra-supercritical power generation fell 1.30%.
On the capital front, the PET copper foil concept sector recorded a main-fund net outflow of RMB 488 million on the day, with 30 stocks seeing main-fund net outflows and five stocks recording net outflows exceeding RMB 100 million. Defu Technology had the largest net outflow at RMB 423 million; Dongcai Technology, Nuode Shares and Yuandong Shares recorded net outflows of RMB 391 million, RMB 183 million and RMB 162 million, respectively. Concept stocks with the largest main-fund net inflows were Zhongtian Technology, Woguang Optoelectronics and Jiayuan Technology, at RMB 689 million, RMB 416 million and RMB 103 million, respectively.
In terms of individual stock fund flows, Defu Technology had a turnover rate of 8.24% on the day and a main-fund net outflow of RMB 423.3304 million; Dongcai Technology fell 3.70% with a turnover rate of 10.47% and a net outflow of RMB 390.5975 million; Nuode Shares fell 2.63% with a turnover rate of 9.16% and a net outflow of RMB 182.6788 million; Yuandong Shares fell 2.56% with a turnover rate of 11.25% and a net outflow of RMB 161.5300 million; Hangdian Shares fell 4.07% with a turnover rate of 13.47% and a net outflow of RMB 158.9779 million.
Tongguan Copper Foil fell 2.37% with a turnover rate of 3.82% and a main-fund net outflow of RMB 80.7071 million; Guanghua Technology fell 2.64% with a turnover rate of 7.63% and a net outflow of RMB 76.2391 million; Taijin New Energy fell 6.30% with a turnover rate of 23.43% and a net outflow of RMB 54.2502 million; Hengtong Shares fell 2.30% with a turnover rate of 2.85% and a net outflow of RMB 41.1782 million; Jiemei Technology fell 1.40% with a turnover rate of 3.28% and a net outflow of RMB 38.3074 million. Zhongyi Technology, Shuangxing New Material, Dongwei Technology, Tongfeng Electronics and Oulai New Material recorded net outflows of RMB 36.1550 million, RMB 31.5380 million, RMB 31.2708 million, RMB 30.7879 million and RMB 26.1394 million, respectively, while Jiejia Weichuang, Hailiang Shares and Shengli Precision recorded net outflows of RMB 18.7722 million, RMB 15.4211 million and RMB 13.6804 million, respectively.
On the main-fund net inflow side, Zhongtian Technology rose 3.41% with a turnover rate of 9.08% and a net inflow of RMB 689.2983 million; Woguang Optoelectronics rose 2.59% with a turnover rate of 19.69% and a net inflow of RMB 416.0974 million; Jiayuan Technology closed flat with a turnover rate of 6.69% and a net inflow of RMB 102.7830 million; Xiandao Intelligent rose 0.54% with a turnover rate of 2.28% and a net inflow of RMB 54.9257 million; Fangbang Shares fell 4.09% with a turnover rate of 6.37% and a net inflow of RMB 51.8238 million. Delong Laser, Huicheng Vacuum and Hengli Petrochemical recorded net inflows of RMB 19.2294 million, RMB 19.0338 million and RMB 15.1715 million, respectively, while Sanfu New Materials, Jiadeli and Jinjia Shares recorded net inflows of RMB 14.8826 million, RMB 10.7082 million and RMB 9.3692 million, respectively.