VFIAX vs. VOO are two very popular funds by Vanguard. When compared like for like, both assets have notable similarities, but a few differences distinguish one from the other.
If you are looking for long-term investment options, VFIAX vs. VOO are very good options because they are likely to appreciate several years down the line.
One of the major differences is that while VFIAX is a mutual fund, VOO is an ETF. That means that you can invest in VFIAX from $3,000, while you can invest in VOO starting from $1.