Why is there a difference in the LTP on the market watch and on different time frame charts?
This issue happens if you have opened Heiken Ashi charts. Even though they look like candle charts, they behave differently.
In a candle chart, Open, High, Low, Close is the actual OHLC for that time period. In a Heiken Ashi chart, it is calculated as below, this is done to filter out the noise and to help better spot the trend.
HA-Close = (Open(0) + High(0) + Low(0) + Close(0)) / 4
HA-Open = (HA-Open(-1) + HA-Close(-1)) / 2
HA-High = Maximum of the High(0), HA-Open(0) or HA-Close(0)
HA-Low = Minimum of the Low(0), HA-Open(0) or HA-Close(0)
In a normal live candle, the close of the candle is the LTP price as per MarketWatch. In Heiken Ashi, it is based on the above formula. Hence the LTP will never match the Live Heiken Ashi (HA) closing price.
To switch from HA to normal candles, click on 'display' on the charts and select 'candles' instead of Heiken Ashi.