1. **Cainiao Network**:

- Alibaba issued an announcement on March 26, 2024, announcing the withdrawal of Cainiao Network's listing application and acquiring its remaining equity for US$3.75 billion in cash, including all equity of minority shareholders (including employees) and equity vested by employees. This means that Alibaba has completed its full control of Cainiao Network.

In addition, the knowledge base you provided does not contain equity acquisition information of other specific companies. However, as a world-renowned e-commerce and technology giant, Alibaba has carried out a series of investment and M&A activities in the past few years, involving e-commerce, financial technology, cloud computing, logistics, entertainment, medical health and other fields.

The following are some of the more well-known acquisitions by Alibaba Group in history (please note that the following information is based on historical records, may not be complete, and does not include the latest acquisitions):

2. **Important Acquisition Cases**:

- **Youku Tudou**: In 2015, Alibaba completed the full acquisition of Youku Tudou and brought it under its umbrella, strengthening its layout in the digital entertainment and video content fields.

- **Ele.me**: In 2018, Alibaba and Ant Group completed the full acquisition of Ele.me, further strengthening the local life service sector.

- **Lazada**: Alibaba gradually increased its stake in Southeast Asian e-commerce platform Lazada and eventually achieved full control over it, thereby deepening its e-commerce layout in the Southeast Asian market.

- **Sun Art Retail**: Through the acquisition, Alibaba became the majority shareholder of Sun Art Retail (which owns supermarket brands such as RT-Mart and Auchan), accelerating the new retail strategy of online and offline integration.

- **NetEase Kaola**: In 2019, Alibaba acquired NetEase Kaola to strengthen its leading position in the cross-border e-commerce market.

- **Intime Department Store**: Through a series of equity transactions, Alibaba became the controlling shareholder of Intime Department Store, promoting the application of the new retail strategy in the department store industry.

- **UCWeb**: Alibaba acquired the mobile browser company UCWeb in the early years and integrated it into its mobile Internet business.

To obtain a complete record of Alibaba Group's equity acquisitions, it is recommended to consult the official annual report, investor relations information, special reports in financial news media, or visit professional corporate databases (such as Crunchbase, Qichacha, Tianyancha, etc.), which usually provide more detailed and updated acquisition and investment information. Since the knowledge base you provided does not specifically list the details of equity acquisitions other than Cainiao Network, and your inquiry spans the entire history of Alibaba Group, it is impossible to provide you with a detailed list of acquired companies here. If you need to know the acquisition activities in a specific period or the investment situation in a specific industry, please provide a more specific time range or industry category so that I can query or analyze it for you.