Dollar cost average stocks based on Yahoo Finance API

dca

#!/bin/bash

# Default values for tickers and DCA thresholds
tickers=("^GSPC" "AAPL" "AMZN" "GOOG" "MSFT" "NVDA" "PLTR" "TSLA")
dca_low=0.80
dca_high=0.95

# Function to display help
display_help() {
    echo "Usage: $(basename "$0") [options]"
    echo
    echo "Options:"
    echo "  -t, --tickers   Comma-separated list of stock tickers (e.g., \"AAPL,GOOG,MSFT\")"
    echo "  -l, --low       Low DCA threshold as a fraction of 52-week high (default: 0.80)"
    echo "  -h, --high      High DCA threshold as a fraction of 52-week high (default: 0.95)"
    echo "  --help          Display this help message"
    echo
    exit 1
}

# Function to check for dependencies
check_dependencies() {
    local dependencies=("jq" "curl")
    for dep in "${dependencies[@]}"; do
        if ! command -v $dep &> /dev/null; then
            echo "Error: $dep is not installed."
            echo "Please install $dep to run this script."
            echo "For example, you can install it using:"
            echo "  sudo apt-get install $dep"
            exit 1
        fi
    done
}

# Parse command line arguments
while [[ "$1" != "" ]]; do
    case $1 in
        -t | --tickers )   shift
                           IFS=',' read -r -a tickers <<< "$1"
                           ;;
        -l | --low )       shift
                           dca_low=$1
                           ;;
        -h | --high )      shift
                           dca_high=$1
                           ;;
        --help )           display_help
                           ;;
        * )                display_help
                           ;;
    esac
    shift
done

# Check for dependencies
check_dependencies

# Function to determine buying strategy
determine_strategy() {
    TICKER=$1
    ONE_YEAR_AGO=$(date -v-1y "+%s" 2>/dev/null || date -d '1 year ago' "+%s" 2>/dev/null)
    RESPONSE=$(curl -s "https://query1.finance.yahoo.com/v8/finance/chart/$TICKER?period2=$(date +%s)&period1=$ONE_YEAR_AGO&interval=1d")
    HIGH_52_WEEK=$(echo $RESPONSE | jq '[.chart.result[0].indicators.quote[0].high[]] | max')
    DAILY_HIGH=$(echo $RESPONSE | jq '.chart.result[0].meta.regularMarketDayHigh')

    THRESHOLD_AGGRESSIVE=$(echo "$HIGH_52_WEEK * $dca_low" | bc)
    THRESHOLD_NORMAL=$(echo "$HIGH_52_WEEK * $dca_high" | bc)

    if (( $(echo "$DAILY_HIGH < $THRESHOLD_AGGRESSIVE" | bc -l) )); then
        STRATEGY="Buy aggressively"
    elif (( $(echo "$DAILY_HIGH < $THRESHOLD_NORMAL" | bc -l) )); then
        STRATEGY="Buy normally"
    else
        STRATEGY="Don't buy"
    fi

    # Adjusted printf statement for better alignment
    printf "| %-8s | %12.2f | %18.2f | %12.2f | %12.2f | %-18s |\n" "$TICKER" "$DAILY_HIGH" "$HIGH_52_WEEK" "$THRESHOLD_AGGRESSIVE" "$THRESHOLD_NORMAL" "$STRATEGY"
}

# Print header with adjusted spacing
printf "| %-8s | %-12s | %-18s | %-12s | %-12s | %-18s |\n" "Ticker" "Daily High" "Year High" "High x $dca_low" "High x $dca_high" "Strategy"
printf "| %-8s | %-12s | %-18s | %-12s | %-12s | %-18s |\n" "--------" "------------" "------------------" "------------" "------------" "------------------"

# Loop through each ticker and determine strategy
for ticker in "${tickers[@]}"; do
    determine_strategy $ticker
done

LICENSE

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

NOTES: Created with the help of ChatGPT.

How to use?

1. Copy to your machine

    wget -O dca https://gist.githubusercontent.com/alexandremcosta/8ee7d1a677773e2e03a4f418a80be7e9/raw/02855af9d279059927d64b052a3e1249e9b86ba6/dca

2. Add executable permission: chmod +x dca
3. run ./dca