endeavor, under the radar (O)

노력, 시도, 애씀
“Endeavor" is a noun that refers to a concerted and sustained effort towards achieving a goal. It implies a determined and purposeful action or undertaking, often involving hard work, dedication, and perseverance. An endeavor can range from personal pursuits such as academic or career achievements to collective efforts like scientific research, business ventures, or community projects. In essence, it encapsulates the idea of striving towards something with resolve and commitment.
 
암암리에, 비밀리에, 은밀히
"Under the radar" is an idiom that means something is happening or existing without attracting much attention, scrutiny, or awareness. It originated from the concept of aircraft flying below the range of radar detection to avoid detection by enemy forces. In broader usage, it can refer to anything that is operating, developing, or progressing quietly or unnoticed, often intentionally. For example, a business might be growing under the radar if it's expanding without drawing significant attention from competitors or the public. Similarly, a person might be living their life under the radar if they're not attracting much attention or scrutiny from others.
 

Six stocks are making big investments in AI, with the latter doing so in a more under-the-radar fashion.

• "Six stocks" refers to six companies or businesses.
• "Making big investments in AI" means these companies are allocating significant resources (such as money, time, and effort) towards advancements in artificial intelligence (AI) technology.
• "The latter" is referring to one or some of the six stocks mentioned earlier in the context.
• "Doing so" is referring to making big investments in AI, as mentioned in the previous part of the sentence.
• "In a more under-the-radar fashion" means that the mentioned stocks are making these investments quietly or without attracting much attention. They are likely not publicizing their investments extensively or are not as widely recognized for their involvement in AI compared to the other stocks mentioned earlier.

Overall, the sentence is highlighting that among the six stocks making significant investments in AI, there are some that are doing so in a less visible or noticeable manner.