According to a report on December 30 by the Financial Association (Editor: Li Wei), A-share investors often say, "There are golden houses within the books," diligently studying listed companies' announcements to discover wealth secrets. However, some believe that the public nature of announcements diminishes their advantage. So, what is the actual effectiveness of announcements? Which announcements can yield greater returns? How can announcements be efficiently interpreted?

This article reviews the 20 most profitable announcements of 2024, reflecting on these excellent announcements and sharing some practical tips to help investors accurately uncover the value of announcements.

The definition of "most profitable" in this article is the percentage increase between the announcement date and the highest stock price within that year, requiring the announcement to clearly contain the logic for future stock price increases. This ranking excludes new stocks, Recent IPOs, Special Treat stocks, and stocks listed on BSE.

Through the classification of announcements, we can find which types of announcements are more worthy of our attention.

The year 2024 will be a big year for the speculation of A-share asset restructuring, giving birth to many strong stocks.

On September 10, Hainan Shuangcheng Pharmaceuticals announced that the company plans to purchase a total of 100% shares of Ningbo Aola Semiconductors from 25 trading parties via issuing shares and paying cash, and to raise matching funds. The target company is mainly engaged in the research and development, design, and sales of analog chips and mixed-signal chips, with main products including clock chips, power management chips, Sensors, RF chips, etc. Upon completion of this transaction, the listed company will achieve a strategic transformation and focus on developing analog chips and mixed-signal chip design business, which will help the listed company find new profit growth points and further enhance its continuous operation capability.

On October 13, Optics Technology Holding announced that the company plans to purchase 100% of Xianxing Electronics Technology Co., Ltd. shares held by all 55 shareholders of Xiandai Electronic Materials through issuing shares and paying cash, and also plans to issue stocks to no more than 35 specific investors to raise matching funds. The target company is committed to the research, production, and sales of advanced PVD sputtering Target Material and vapor deposition materials, and is also engaged in the recycling, purification, preparation, and sales of high-purity rare metal and compounds.

After the announcement of Hainan Shuangcheng Pharmaceuticals' restructuring, the company's stock price skyrocketed nearly 7 times, making this announcement the most profitable one in the A-share market for 2024. Following the announcement from Optics Technology Holding, the stock price increased by more than 4 times in the specified range.

It is worth noting that not all restructuring announcements lead to such significant increases. In addition to market sentiment, there are similarities in the announcements of the major stocks.

A typical example is Hainan Shuangcheng Pharmaceuticals. Before the asset restructuring, the listed company primarily engaged in the research and development, production, and sales of chemical synthetic peptide drugs, which belonged to the Active Pharmaceutical Ingredient sector. However, the symbol company involved in the restructuring mainly focuses on the research, design, and sales of analog chips and mixed-signal chips, with major products including clock chips, power management chips, sensor chips, and radio frequency chips. After this transaction is completed, the listed company will achieve a strategic transformation, emphasizing the design business of analog chips and mixed-signal chips. This switch in industry has attracted significant interest from A-share investors.

Announcing an upward abnormal trading movement indicates that the company's stock price has significantly increased in the past few days. Valuable abnormal movement announcements often provide incremental information, confirming the logic behind the rise in the company's stock price, making it a leading figure in market hotspots, thereby further promoting the stock price increase and even acting as a booster for tenfold stocks.

On September 23, Hytera Communications Corporation announced an abnormal trading movement regarding the recent expansion of its Middle East business, stating: In recent years, the company has continuously strengthened its business layout in emerging market countries in the Middle East, South Asia, Latin America, Africa, and the Belt and Road Initiative Concept regions. In the first half of the year, facing the business opportunities in the Middle East, the company has increased its market layout and overseas brand promotion efforts in that region, facilitating business expansion.

This announcement coincided with the 'Lebanon pager explosion' incident becoming a market hotspot, where the company is one of the global major providers of professional wireless communications equipment, specializing in intercom terminals and trunking systems. After the commercialization of the 5G network, it provides intercoms, explosion-proof intercoms, police, wireless, and security intercoms to clients. In this abnormal trading announcement, the company confirmed its business expansion in the Middle East, establishing itself as the undeniable leader in this market hotspot, with stock price increases exceeding 600% in the specified range after the announcement.

On April 12, Jiangsu Zhengdan Chemical Industry issued a supplementary announcement regarding abnormal stock trading fluctuations, stating that, influenced by market supply and demand factors, the market price of the company's main product, phthalic anhydride, has risen significantly, which is expected to positively impact the company's performance in 2024. However, due to the uncertainty of the sustainability of phthalic anhydride product price fluctuations, it is currently impossible to predict the extent of the impact on the company's performance. The company noted recent rumors circulating on platforms like stock forums about the permanent shutdown of INEOS's phthalic anhydride facilities in the USA, but the company has not yet received a formal announcement from INEOS regarding the shutdown.

In the April 12 announcement, Jiangsu Zhengdan Chemical Industry confirmed the significant increase in the market price of its main product, phthalic anhydride. After the announcement was released, the stock price saw a maximum cumulative increase of nearly 500%.