--- title: "Dragon and Tiger List | Optics Tech (300489) fell 8.74%, with the top 5 buyers purchasing a total of 707 million yuan, and the top 5 sellers selling a total of 677 million yuan. Reason for being listed: The top 5 securities with a daily amplitude reaching 30%" type: "News" locale: "en" url: "https://longbridge.com/en/news/287523415.md" description: "Optics Tech (300489) fell 8.74% on May 25, closing at 123.2 yuan, with a circulating market value of 17.081 billion yuan. The buying amount on the Dragon and Tiger List was 729 million yuan, while the selling amount was 735 million yuan, resulting in a net buying amount of -5.8481 million yuan. The top 5 buyers collectively bought 707 million yuan, and the top 5 sellers collectively sold 677 million yuan. The expected operating revenue for 2025 is 2.08 billion yuan, with a net profit of -33 million yuan" datetime: "2026-05-25T10:46:33.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/287523415.md) - [en](https://longbridge.com/en/news/287523415.md) - [zh-HK](https://longbridge.com/zh-HK/news/287523415.md) generator: "portal-rs" --- # Dragon and Tiger List | Optics Tech (300489) fell 8.74%, with the top 5 buyers purchasing a total of 707 million yuan, and the top 5 sellers selling a total of 677 million yuan. Reason for being listed: The top 5 securities with a daily amplitude reaching 30% According to Tongbi Finance, on May 25, Optics Tech (300489) appeared on the Dragon and Tiger List. Reason for being listed: this stock's daily volatility reached 30%, making it one of the top 5 securities. The buying amount on the Dragon and Tiger List was 729 million yuan, the selling amount was 735 million yuan, and the net buying amount was -5.8481 million yuan. The top 5 buying amounts totaled 707 million yuan. Among them, the first buying position was for institutional use, with a purchase of 285 million yuan; the second buying position was for institutional use, with a purchase of 164 million yuan; the third buying position was for institutional use, with a purchase of 98.6918 million yuan; the fourth buying position was for institutional use, with a purchase of 96.9271 million yuan; the fifth buying position was from GF Securities Co., Ltd. Zhengzhou Agricultural Road Securities Business Department, with a purchase of 62.5842 million yuan. The top 5 selling amounts totaled 677 million yuan. Among them, the first selling position was for institutional use, with a sale of 242 million yuan; the second selling position was for institutional use, with a sale of 139 million yuan; the third selling position was for institutional use, with a sale of 132 million yuan; the fourth selling position was for institutional use, with a sale of 93.2442 million yuan; the fifth selling position was from Changjiang Securities Co., Ltd. Shanghai Dongming Road Securities Business Department, with a sale of 71.5424 million yuan. As of the close on May 25, Optics Tech (300489) fell by 8.74%, with a closing price of 123.2 yuan, a circulating market value of 17.081 billion yuan, and a turnover rate of 20.86%. *Tongbi Finance Tip:* *Optics Tech (300489.SZ) is projected to have an operating income of 2.08 billion yuan in 2025, with an operating income growth rate of 42.96%. The net profit attributable to the parent company is -33 million yuan, with a net profit growth rate of -370.86%, and a return on equity of -5.11%.* *In the first quarter of 2026, the company's operating income was 568 million yuan, with an operating income growth rate of 20.49%. The net profit attributable to the parent company was 15 million yuan, with a net profit growth rate of 60.81%.* *Currently, the company belongs to the materials industry, with main product types being aluminum processing materials, specialized equipment, and components. In the 2025 report, the main composition was infrared optics and laser materials: 89.01%; aluminum alloy materials and components: 10.99%.* ### Related Stocks - [300489.CN](https://longbridge.com/en/quote/300489.CN.md) - [000776.CN](https://longbridge.com/en/quote/000776.CN.md) - [01776.HK](https://longbridge.com/en/quote/01776.HK.md) - [000783.CN](https://longbridge.com/en/quote/000783.CN.md) ## Related News & Research - [Hocklynn Releases Industry Study Highlighting Fatigue-Risk Advantages of Punching Over Laser Cutting](https://longbridge.com/en/news/296635862.md) - [Negative Link Announces Global Expansion and Next Phase of Growth](https://longbridge.com/en/news/296644416.md) - [FOCUS-Green giant: How Taylor Farms became a top salad supplier before US diarrhea outbreak](https://longbridge.com/en/news/296469939.md) - [SpareBank 1 Østlandet employee share buyback offer book closes Aug. 20 at 16:00 CEST](https://longbridge.com/en/news/296449504.md) - [JDC: Record growth in turnover and EBITDA, with strong outlook driven by new regulation and AI](https://longbridge.com/en/news/296247395.md) --- > **Disclaimer: This article is for reference only and does not constitute any investment advice.**