S&P 500's Top Stock Was A Big Winner Monday. So Were These 2026 Losers.

• Sandisk surged 11.8% to a record 952.50 on news it will join the Nasdaq 100 on April 20, extending its 2026 gain to the top of the S&P 500 after rallying from a March 30 low of 558.58.
• Oracle jumped 12.7% above its 50-day moving average for the first time in 2026, benefiting from AI sentiment and a software sector rebound, though the stock remains down 20.2% year-to-date.
• Fair Isaac plunged 14% on Friday to its lowest level since late 2023 before rebounding 8.5% Monday, while KKR gained 7.6% back above its 50-day line after private credit concerns drove a 23% decline in 2026.

Market Summary: S&P 500 Monday Movers

Key Market Action

The S&P 500 saw significant gains Monday among both top 2026 performers and year-to-date laggards, with five stocks leading the benchmark index higher.

Top Performers

Sandisk (SNDK) surged 11.8% to $952.50, hitting another record high after announcing it will join the Nasdaq 100 on April 20, replacing Atlassian. The flash memory giant remains the S&P 500's top performer in 2026 by a wide margin, having rocketed higher since its March 30 low of $558.58.

Oracle (ORCL) jumped 12.7% to $155.62, closing above its 50-day moving average for the first time in 2026. The tech giant showcased AI capabilities at its Customer Edge Summit and benefited from a broader rebound in software and AI compute stocks. However, Oracle remains down 20.2% year-to-date.

Notable Rebounds Among 2026 Losers

Fair Isaac (FICO) leaped 8.5% to $1,000.91 after plunging 14% Friday to its lowest level since late 2023. The credit-score company is down 41% in 2026.

Cadence Design Systems (CDNS) rallied 8.5% to $288.20, approaching its 50-day moving average. The chip-design software maker is down 7.8% year-to-date.

KKR & Co. gained 7.6% to $98.14, reclaiming its 50-day line for the first time in nearly three months after recovering from private credit concerns. The stock remains down 23% in 2026.

Market Implications

The strong Monday performance among beaten-down technology and financial stocks suggests potential stabilization in previously troubled sectors, though many names remain significantly below 2026 starting levels.