Is there a way to add SPY volume to SPX chart?

[OliviaTOS]

I wonder if there is a way to add volume of SPY to the lower panel of SPX chart. The following study works if the main chart is a stock or etf such as AAPL or QQQ. However, it doesn't work if the main chart is SPX -- I guess it's because SPX doesn't have volume data and therefore the lower volume panel is by default missing? Any idea of how to make it work on the SPX chart? Much appreciated!

input ticker="SPY";​

declare lower;​

plot data = volume(ticker);​

data.setPaintingStrategy(PaintingStrategy.Histogram);​

data.SetDefaultColor(Color.Dark_Green);​

data.SetLineWeight(5);​

 

[Svanoy]

@OliviaTOS
You could just put your chart on an instrument like /ES and then use a study to hide the chart and plot the open, close, high, and low of SPX.
That would allow the lower chart to display your study for SPY volume.

input ticker = "SPX";
def SPXOpen = open(ticker);
def SPXClose = close(ticker) ;
def SPXLow = low(ticker);
def SPXHigh = high(ticker);

HidePricePlot(yes);
#Red Candlesticks -----------------------------------------------------------------|

def SPXOpen_fall = if SPXOpen > SPXClose
              then SPXOpen
              else Double.NaN;
def SPXHigh_fall   = if SPXOpen >= SPXClose
              then SPXHigh
              else Double.NaN;
def SPXLow_fall    = if SPXOpen >= SPXClose
              then SPXLow
              else Double.NaN;
def SPXClose_fall    = if SPXOpen >= SPXClose
              then SPXClose
              else Double.NaN;

AddChart(growColor = Color.DOWNTICK, fallColor = Color.UPTICK, neutralColor = Color.CURRENT, high = SPXHigh_fall, low = SPXLow_fall, open = SPXOpen_fall, close = SPXClose_fall , type = ChartType.CANDLE);


def SPXOpen_rise = if SPXOpen < SPXClose
                then SPXClose
                else Double.NaN;
def SPXHigh_rise  = if SPXOpen <= SPXClose
              then SPXHigh
              else Double.NaN;
def SPXLow_rise   = if SPXOpen <= SPXClose
              then SPXLow
              else Double.NaN;
def SPXClose_rise   = if SPXOpen <= SPXClose
              then SPXOpen
              else Double.NaN;

AddChart(growColor = Color.UPTICK, fallColor = Color.DOWNTICK, neutralColor = Color.CURRENT, high = SPXHigh_rise, low = SPXLow_rise, open = SPXOpen_rise, close = SPXClose_rise, type = ChartType.CANDLE);

 

[OliviaTOS]

Thanks so much, @Svanoy, for the nice trick! I tried and it works!

I just realized that a similar approach is to add a comparison study, and choose SPX as the secondary security and "candle" as the comparison style. But I like your approach better because drawings work on your phantom SPX chart, but not with the comparison study.

The only caveat is that the values on the chart (y axis, candle high/low/open/close, etc.) are for the hidden ticker (ES) but not for SPX. Showing the SPX values would help with option trading. I guess I can do the subtraction in my mind but wonder if there's an automatic fix. Lemme know if there is any suggestion.

Much appreciated!