Portfolio123 incorporates free IEX Real Time prices in many places to improve the user experience. IEX is a new stock exchange founded in 2012. Based on our own observation we have determined that their real time prices are quite accurate regardless of market cap.
However IEX's bid-ask spreads are not very useful for lower liquidity stocks right now due to IEX's relatively low trading volumes. We are therefore not showing them at the moment to avoid confusion.
The IEX prices presented on Portfolio123 are best efforts by both IEX and Portfolio123. We will fall back to delayed (SIP) prices via IEX for stocks without recent trades on IEX.
Note: Canadian stocks and any other instrument not listed on IEX will fall back to previous close. In addition, holdings in your brokerage accounts which are not currently supported by Portfolio123 (such as options) will use a recent price updated once daily.