Core Viewpoint - The photoresist concept sector has seen a significant increase, with a rise of 2.83% as of the market close on January 15, leading among concept sectors [1] Group 1: Market Performance - Within the photoresist sector, 62 stocks experienced gains, with Qicai Chemical reaching a 20% limit up, while Tongcheng New Materials and Dongcai Technology also hit the limit up [1] - Notable gainers included Shanghai Xinyang, Chipsource Micro, and Hengkun New Materials, which rose by 16.60%, 10.63%, and 10.23% respectively [1] - Conversely, the biggest losers were Tianlong Group, Aerospace Intelligence, and Aolaide, which fell by 20.02%, 4.39%, and 3.10% respectively [1][6] Group 2: Capital Flow - The photoresist sector attracted a net inflow of 3.292 billion yuan, with 51 stocks receiving net inflows, and 11 stocks exceeding 100 million yuan in net inflow [1] - The top stock for net inflow was Nanda Optoelectronics, with a net inflow of 631 million yuan, followed by Dongcai Technology, Tongcheng New Materials, and Jingrui Electric Materials with net inflows of 417 million yuan, 379 million yuan, and 346 million yuan respectively [1][2] Group 3: Capital Inflow Ratios - Stocks with the highest net inflow ratios included Tongcheng New Materials, Jiuri New Materials, and Hengkun New Materials, with ratios of 16.85%, 13.92%, and 13.37% respectively [2] - The photoresist concept capital inflow leaderboard featured Nanda Optoelectronics, Dongcai Technology, and Tongcheng New Materials, with respective net inflow ratios of 6.71%, 10.33%, and 16.85% [2][3]