Worst S&P 500 stocks in the first half of 2026.
By Vlad from Bastion on
Three dominant themes.
Software: 18 of the bottom 40. Nearly half. 🧾 Intuit $INTU -60% 🏠 CoStar $CSGP -58% 💼 Accenture $ACN -53% 💻 Cognizant $CTSH -53% 📺 The Trade Desk $TTD -52% 📊 Gartner $IT -49% 👔 Workday $WDAY -43% ☁️ Salesforce $CRM -41% 🎨 Adobe $ADBE -41%
Tax prep ($INTU), professional tools ($ADBE), CRM ($CRM), HR ($WDAY), ad-tech ($TTD), IT consulting ($ACN, $CTSH). AI agents are threatening the same workflows these companies monetize. The market is repricing the entire software layer.
MedTech & Healthcare: 6 stocks, led by $BSX -55%. 🫀 Boston Scientific $BSX -55% 💉 Insulet $PODD -46% 🐾 Zoetis $ZTS -42% 🏥 Universal Health $UHS -32% 🤖 Intuitive Surgical $ISRG -30% 🩺 Abbott $ABT -27%
Insulet ($PODD, insulin pumps) is the clearest GLP-1 casualty: fewer diabetics means fewer pump users. Boston Scientific dropped 55% despite strong fundamentals, a pure valuation reset after trading at 50x+ earnings. Zoetis ($ZTS, animal health) caught a downgrade cycle.
Consumer: tariffs and slowing spend. 🧘 Lululemon $LULU -45% 🚜 Tractor Supply $TSCO -36% 👟 Nike $NKE -35% 🍕 Domino's $DPZ -28%
Nike and Lululemon share the same problem: global supply chains exposed to tariffs, plus slowing consumer spend in core markets. Tractor Supply ($TSCO) is a rural consumer bellwether signaling real weakness. Even Domino's ($DPZ), typically defensive, is down 28%.