The main difference between the statements is in the amount of shared information.

以上句子之间的主要区别在于共享信息的数量。

So one party agreeing to buy a certain amount of shares from another party.

因此， 一方同意从另一方购买一定数量的股份。

And another is about the capital stake, the amount of shares they own in each other.

另一个是关于资本股权，即他们彼此拥有的股份数量。

Joe understands that we have different life experiences, but we also have an incredible amount of shared values.

乔明白我们有不同的生活经历，但我们也有很多共同的价值观。

Basically, what happens is a company has a certain amount of shares that are out in the public market owned by people.

基本上，发生的情况是一家公司拥有一定数量的股票， 这些股票在公开市场上由人们拥有。

What happened next is, Twitter invited him to join the board, which would have put a cap on the amount of shares that he is able to own.

接下来发生的是，推特邀请他加入董事会，这将为他能够拥有的股份数量设定上限。