Jessica Inskip turns to cornerstones of the market through financials and consumer staples on today's Big 3. She notes Walmart's (WMT) OpenAI partnership as a sign its seeking to improve productivity, Blackrock's (BLK) momentum in crypto tokenization and digital finance, and Citigroup (C) as a "high quality" dividend play amid market volatility. Rick Ducat uses technical analysis to highlight key levels investors should watch in all three stocks.