I logged into Vanguard. Clicked on Exchange to reduce my position in Fund A and increase my position in Fund B.
Do I have to pay taxes on unrealized capital gains in Fund A?
For example:
Fund A was purchased in Dec 2018 for $100
Fund A on Dec1st 2020 appreciated to $150
On Dec 1st 2020 I exchanged Fund A to Fund B.
Now on Dec 1st 2020 my position in fund B is $150
Do I need to pay taxes on the unrealized capital gain of $50

In Vanguard when I go to page for Fund A, I see three options:
1. Buy
2. Sell
3. Exchange.
I did not click on Sell or Buy.

