Stock market today: Dow, S&P 500, Nasdaq rose on hopes of US-Iran talks, oil drops below $100 Yahoo FinanceStock market today: Dow, S&P 500, Nasdaq rise on hopes of US-Iran talks, oil drops below $100 Yahoo FinanceTech Stocks Rise as Traders Keep Focus on Iran Talks WSJWall Street advances as investors bet on Mideast de-escalation ReutersStocks rally, oil prices fall amid talk of Iran ceasefire NBC News