My model portfolios are both based on $1,000,000.00. It’s unlikely you want purchases of less than $1,000.00 per holding so if your starting portfolio is $10,000.00, keep in mind you are limiting yourself to 10 purchases or less, to get started. I’m suggesting $1,000.00 per holding since many discount brokerage firms charge $9.99 per trade which is equivalent to about 1% of $1,000.00. If you choose to hold a mutual fund, as one or more of your holdings, the minimum purchase is generally $5,000.00 per fund.
[Note: I often hold one or two Mawer Mutual funds for global and/or international equity exposure. They are best-in-class money managers. As noted, initial purchase requirement is $5,000.00 for purchases of their funds. [Exchanged Traded Funds (ETFs) do provide more flexibility here, as there is no minimum purchase.]