The below earlier LinkedIn post of well-defined nonlinear Stealth Support indicated price evolution for natural gas (UNG) was highly
likely on an unsustainable trajectory.
Within a month of the post, the market breached its well-defined Stealth Support Curve. In the 3 months that followed, this market lost 42% of its value.
The following R code reproduces the below Stealth Curve.
UNG Stealth Curve – R Code
library(tidyverse) library(readxl) # Original data source - https://www.nasdaq.com/market-activity/funds-and-etfs/ung/historical # Download reformatted data (columns/headings) from my github site and save to a local drive # https://github.com/123blee/Stealth_Curves.io/blob/main/UNG_prices.xlsx ung <- read_excel("... Insert your local file path here .../UNG_prices.xlsx") ung # Convert 'Date and Time' to 'Date' column ung[["Date"]] <- as.Date(ung[["Date"]]) ung bars <- nrow(ung) # Add bar indicator as first tibble column ung <- ung %>% add_column(t = 1:nrow(ung), .before = "Date") ung # Add 40 future days to the tibble for projection of the Stealth Curve once added future <- 40 ung <- ung %>% add_row(t = (bars+1):(bars+future)) # Market Pivot Lows using 'Low' Prices # Chart 'Low' UNG prices xmin <- 2250 xmax <- bars + future ymin <- 0 ymax <- 25 plot.new() background <- c("azure1") chart_title_low <- c("Natural Gas (UNG) \nDaily Low Prices ($)") u <- par("usr") rect(u[1], u[3], u[2], u[4], col = background) par(ann=TRUE) par(new=TRUE) t <- ung[["t"]] Price <- ung[["Low"]] plot(x=t, y=Price, main = chart_title_low, type="l", col = "blue", ylim = c(ymin, ymax) , xlim = c(xmin, xmax ) ) # Add Stealth Curve to tibble # Stealth Support Curve parameters a <- -444.56 b <- 6.26 c <- -2555.01 ung <- ung %>% mutate(Stealth_Curve_Low = a/(t + c) + b) ung # Omit certain Stealth Support Curve values from charting ung[["Stealth_Curve_Low"]][2550:xmax] <- NA ung # Add Stealth Curve to chart lines(t, ung[["Stealth_Curve_Low"]])Details of Stealth Curve parameterization are detailed in my ‘Stealth Curves: The Elegance of Random Markets’ text on Amazon.
Brian K. Lee, MBA, PRM, CMA, CFA
Feel free to contact me on LinkedIn.