Nvidia said it would invest 5 billion in Intel, sending shares of the embattled chipmaker soaring Thursday. Cesc Maymo / Getty Images Close Tech stocks surged in recent trading, pushing the Dow, S&P 500, and Nasdaq to record highs. Intel (INTC) was the best-performing stock in the S&P 500 after Nvidia said it would invest 5 billion in the struggling chipmaker, and the two agreed to co-develop new data center and PC chips. Nvidia (NVDA) shares were up as well. Shares of PayPal (PYPL) and Google-owner Alpha ...