1105_5.1 畫幾張線圖
import yfinance as yf
import matplotlib.pyplot as plt
import pandas as pd # List of companies and their ticker symbols
companies = { “NVIDIA”: “NVDA”, “TSMC”: “2330.TW”, “Broadcom”: “AVGO”, “ASML”: “ASML”, “Samsung Electronics”: “005930.KS”, “AMD”: “AMD”, “Qualcomm”: “QCOM”, “Texas Instruments”: “TXN”, “Applied Materials”: “AMAT”, “Arm Holdings”: “ARM”, “Micron Technology”: “MU”