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Flex (FLEX) shares have been volatile following news late Friday that it will join the S&P 500 before the open on June 22, a move that typically creates buying demand from index-tracking funds and brings a larger spotlight to the company. FLEX shares had already been climbing since its Q4 (Mar) report on May 5, when it posted upside results and issued Q1 and FY27 EPS and revenue guidance above expectations. The stronger underlying story is management's confidence that AI and data center demand is durable, with power, cooling, and cloud infrastructure becoming a larger part of the mix.

• Business: Flex is an advanced manufacturing and supply-chain partner that helps customers design, build, and scale complex products across cloud, communications, industrial, automotive, healthcare, and lifestyle markets. The company has increasingly shifted toward higher-value areas like data center infrastructure, where customers want integrated power, cooling, and compute solutions.
• Margin quality: Recent operating performance has improved, with Q4 adjusted gross margin reaching a record 9.9%, up 50 bps yr/yr, and adjusted operating margin expanding to a record 6.7%, supported by stronger mix and continued operational efficiency.
• Segment balance: CPI is the clear growth engine, with revenue up 31% yr/yr to $1.8 bln in Q4, driven by strength in both Cloud and Power. RMS revenue grew 13% to $2.7 bln, supported by Industrial and Healthcare, while ITS revenue grew 13% to $2.9 bln as Communications strength offset Lifestyle softness.
• Capacity and execution: Management has secured substantial incremental business with hyperscaler and data center customers, and is increasing capacity to support AI infrastructure programs. CapEx is expected to remain elevated in FY27 as FLEX scales power and cooling infrastructure, before returning closer to historical levels in FY28.
• SpinCo: FLEX plans to spin off its Cloud and Power Infrastructure segment into a separate public company by 1Q27. Management expects CPI revenue to grow 65-75% in FY27 and more than 80% in FY28, reflecting strong demand for grid-to-chip power, cooling, and compute infrastructure tied to AI data centers.

Briefing.com Analyst Insight

The S&P 500 addition is a milestone event for FLEX and highlights the transformation the company has made. Recent results show that its mix is shifting toward higher-value products, helping drive stronger growth and better margins. FLEX has moved beyond a traditional EMS profile, with greater exposure to AI data center infrastructure, power, cooling, and advanced manufacturing. The planned CPI spin-off should make that high-growth infrastructure business easier for investors to value, while the remaining Flex business becomes a more focused manufacturing platform. A key focus from here will be whether data center and power strength can continue to outweigh softness in consumer-related markets, especially as FLEX ramps capacity to support hyperscaler demand. Overall, index inclusion adds another layer of recognition, but the more important question is whether FLEX can execute through this next phase of growth and turn its AI infrastructure exposure into sustained revenue growth, margin expansion, and a higher valuation profile.