Market Performance - The optical and optoelectronic sector increased by 1.22% on January 21, with Sanli Pu leading the gains [1] - The Shanghai Composite Index closed at 4116.94, up 0.08%, while the Shenzhen Component Index closed at 14255.12, up 0.7% [1] Stock Performance - Notable gainers in the optical and optoelectronic sector included: - Sanli Pu (002876) with a closing price of 27.69, up 10.01% on a trading volume of 55,600 shares and a transaction value of 154 million [1] - Deep Textile A (000045) closed at 13.64, up 10.00% with a trading volume of 286,600 shares and a transaction value of 383 million [1] - Woge Optoelectronics (603773) closed at 39.16, up 10.00% with a transaction value of 716 million [1] - Chenglai Optics (688502) closed at 435.80, up 8.69% with a transaction value of 1.094 billion [1] - Wavelength Optoelectronics (301421) closed at 114.10, up 8.10% with a transaction value of 1.430 billion [1] Fund Flow - The optical and optoelectronic sector saw a net inflow of 981 million from institutional investors, while retail investors experienced a net outflow of 236 million [2] - Major stocks with significant fund flows included: - Sanan Optoelectronics (600703) with a net inflow of 3.12 billion from institutional investors [3] - TCL Technology (000100) with a net inflow of 2.11 billion from institutional investors [3] - Deep Textile A (000045) with a net inflow of 1.13 billion from institutional investors [3]