"Exxon Mobil, Lockheed Martin, and Walt Disney: Pre-market and Today's Biggest Stock Movers"

Walt Disney's stock rose after activist investor Nelson Peltz's Trian Fund Management increased its stake and may seek multiple board seats; Arm Holdings saw a 3% increase in shares after JPMorgan initiated coverage with an overweight rating; Spotify Technology fell 2% after being downgraded by Redburn Atlantic; Zscaler edged higher after being upgraded by Barclays; Exxon Mobil, Chevron, and Occidental Petroleum experienced stock gains as oil prices rallied due to the recent attack on Israel by Hamas.