The first question: Winning the bid means you bought it. Generally, when new funds accept subscriptions, they may encounter oversubscription. In other words, I wanted to issue 10 billion units, but ended up having to apply for 60 billion yuan. At this time, various methods will be used, such as proportional distribution or drawing of lots. Therefore, investors will find that they clearly want to buy 10,000 yuan, but only 1,000 yuan is the winning bid. This is because you only have 1,000 that can be successfully drawn, or the funds you subscribe for are ten times the limit.
Second question: There is no right or wrong, because old funds (you should be talking about open funds) are open for redemption. As long as there are no restrictions, you can buy as much as you want.