四方达涨2.03%，成交额1.46亿元，主力资金净流出46.47万元

Group 1 - The core viewpoint of the news is that Sifangda's stock has shown significant fluctuations, with a year-to-date increase of 32.21% but a recent decline of 11.45% over the last five trading days [1] - As of December 18, Sifangda's stock price was 14.61 yuan per share, with a market capitalization of 7.096 billion yuan [1] - The company has been active in the stock market, appearing on the "龙虎榜" four times this year, with the latest appearance on December 3, where it recorded a net purchase of 241 million yuan [1] Group 2 - Sifangda operates in the mechanical equipment sector, specifically in general equipment and abrasives, and is involved in concepts such as cultivated diamonds and oil and gas exploration [2] - For the period from January to September 2025, Sifangda reported a revenue of 407 million yuan, reflecting a year-on-year growth of 2.13%, while the net profit attributable to shareholders decreased by 36.62% to 59.5635 million yuan [2] - The company has distributed a total of 579 million yuan in dividends since its A-share listing, with 193 million yuan distributed over the past three years [3]