The broad market exchange-traded fund SPDR S&P 500 ETF Trust (SPY) was up 0.2% and the actively traded Invesco QQQ Trust (QQQ) was 0.4% higher in Tuesday's premarket activity as stalled US-Iran talks weigh on investors.
US stock futures were mixed, with S&P 500 Index futures up 0.1%, Dow Jones Industrial Average futures slipping 0.03%, and Nasdaq futures gaining 0.3% before the start of regular trading.
The National Federation of Independent Business' monthly Small Business Optimism Index rose to a reading of 99.8 in July from 97.4 in June but was below a reading of 100.3 a year earlier.
The existing home sales data for July will be released at 10 am ET.
In premarket action, bitcoin was up by 0.7%. Among cryptocurrency ETFs, the cryptocurrency fund ProShares Bitcoin Strategy ETF (BITO) was 0.8% higher, Ether ETF (EETH) advanced 0.9%, and Bitcoin & Ether Market Cap Weight ETF (BETH) gained 0.5%.
Power Play:
Consumer
The State Street Consumer Staples Select Sector SPDR ETF (XLP) was down 0.02%, the Vanguard Consumer Staples Index Fund ETF Shares (VDC) was 0.7% lower, and the iShares US Consumer Staples ETF (IYK) was inactive. The State Street Consumer Discretionary Select Sector SPDR ETF (XLY) lost 0.02%. The VanEck Retail ETF (RTH) and the State Street SPDR S&P Retail ETF (XRT) were inactive.
Upwork (UPWK) shares were down more than 18% pre-bell after the company posted Q3 and 2026 guidance that trailed analyst estimates.
Winners and Losers:
Financial
The State Street Financial Select Sector SPDR ETF (XLF) advanced 0.03%. Direxion Daily Financial Bull 3X Shares (FAS) was down 0.01%, while its bearish counterpart, Direxion Daily Financial Bear 3X Shares (FAZ), was 0.03% lower.
Riot Platforms (RIOT) shares were up 16%, a day after that company said that it signed a computing agreement expected to generate $9.10 billion in revenue over the initial 20-year term and includes two five-year extension options that could bring total contract value to $16.10 billion.
Industrial
The State Street Industrial Select Sector SPDR ETF (XLI) advanced 0.3%, the Vanguard Industrials Index Fund (VIS) was flat, and the iShares US Industrials ETF (IYJ) was inactive.
Plug Power (PLUG) stock was up more than 14% before the opening bell after the company reported a narrowed Q2 adjusted net loss and higher revenue.
Health Care
The State Street Health Care Select Sector SPDR ETF (XLV) retreated 0.01%, the Vanguard Health Care Index Fund (VHT) gained 0.01%, while the iShares US Healthcare ETF (IYH) was inactive. The iShares Biotechnology ETF (IBB) was 0.4% lower.
Legend Biotech (LEGN) stock was up more than 4% premarket after the company reported forecast-beating Q2 earnings and revenue.
Energy
The iShares US Energy ETF (IYE) was up 0.1%, while the State Street Energy Select Sector SPDR ETF (XLE) was down by 0.2%.
HighPeak Energy (HPK) stock was up more than 4% after the company reported higher Q2 earnings and revenue late Monday.
Technology
The State Street Technology Select Sector SPDR ETF (XLK) advanced 0.6%, the iShares US Technology ETF (IYW) was flat, and the iShares Expanded Tech Sector ETF (IGM) was down 0.03%. Among semiconductor ETFs, the State Street SPDR S&P Semiconductor ETF (XSD) was 2.4% higher, while the iShares Semiconductor ETF (SOXX) rose by 1.4%.
Nvidia (NVDA) shares were 1% higher pre-bell after the chipmaker said it partnered with six major financial institutions to raise $500 billion in third-party capital for the development of artificial intelligence infrastructure.
Commodities
Front-month US West Texas Intermediate crude oil advanced by 0.4% to $82.43 per barrel on the New York Mercantile Exchange. Natural gas was 0.04% lower at $2.79 per 1 million British Thermal Units. The United States Oil Fund (USO) increased by 0.1%, while the United States Natural Gas Fund (UNG) was 1% higher.
Gold futures for November gained by 0.7% to reach $4,451.70 an ounce on the Comex. Silver futures retreated 0.2% to $65.18 an ounce. SPDR Gold Shares (GLD) was up by 0.2%, and the iShares Silver Trust (SLV) was 1.1% higher.