S&P 500-0.36%▼: 7,473.37, modest intraday decline. Nasdaq-1.21%▼: 26,198.03, led lower by weakness in Technology and Communication Services. Russell 2000+0.66%▲: 2,999.31, small-cap strength pushing the index higher. Dow+0.27%▲: 51,704.92, gains concentrated in Basic Materials and Energy. VIX+3.22%▲: 17.32, up on the session. Crypto: BTC+0.66%▲ near $64,510 and ETH+0.43%▲ near $1,732. What's driving the market this week — A surprise resignation by U.K. Prime Minister Keir Starmer broke overnight political news and added an element of policy uncertainty in European markets. Progress reported in U.S.–Iran peace talks over the weekend has reduced immediate oil-risk premia and helped cyclicals and energy-related names earlier in the session. Technology weakness traces to renewed selling pressure following a major chip supplier’s guidance miss earlier in June, which prompted sectorwide downward revaluation and continued pressure on the Nasdaq.