Teradyne Inc. (TER) emerged as the top-performing constituent of the S&P 500 in early Monday trading, with shares up 8.4%. The semiconductor testing equipment provider has maintained strong momentum year-to-date, posting an 80.5% gain. Meanwhile, Intuit Inc. (INTU) ranked as the index’s weakest performer during the same period, as its shares fell sharply amid market volatility.
