In situations where the value of a coin is below 0.00000001 eg. SHND.
The BTC portfolio balance will not be an accurate representation of the actual value of a coin in BTC.
The amount displayed will be higher and not the "true" or correct value at the current conversion rate.
Our system does not accommodate values that go lower than 1 Satoshi (the 8th decimal place).
Hence the display portfolio balance is wrong, inaccurate and higher.
Please bear this in mind when trading. This is also why multiple market places are offered to trade coins/tokens.