Who is Tencent? It's the largely unknown (maybe because it's pretty media shy) parent company of China's ubiquitous WeChat social media app.
Their market cap is $330b, more than JPMorgan Chase.
500m people in China (of 650m total) use WeChat for communicating, finding goods and services, getting directions, and paying for things.
Who else is on the top 10 list?
Google is still #1, for the last 11 years. It's market cap is around 600b.
After that, there's Apple, Microsoft, Amazon, Facebook, AT&T, Visa, Tencent at #8, IBM, and McDonald's.