Sanmina's Cash Flow Gains Momentum: Can the Trend Continue?

Sanmina generated $702.0 million of operating cash flow in the first nine months of fiscal 2026, up from $421.6 million a year earlier, while free cash flow rose to $457.8 million from $341.4 million. Q3 revenue in communications networks, cloud and AI infrastructure reached $2.15 billion, increasing 173.2% on hyperscaler and OEM demand for accelerated computing, storage and networking products. The company has secured additional next-generation AI-compute orders, though capacity investments, tariff/trade-policy exposure and customer concentration could pressure near-term free-cash-flow growth. SANM shares are up 67.6%, trade at 14.86x forward earnings, and FY2026-FY2027 estimates have risen over the past 60 days.

Analysis

SANM’s cash conversion improvement matters less as a standalone valuation catalyst than as evidence that its AI-related mix is moving from prototype/NPI work into repeatable production. The key question for the next 1-3 quarters is whether working capital remains controlled while capacity is added; EMS earnings can look robust during a ramp but reverse quickly if inventory and receivables build ahead of customer deployment. Relative to JBL and CLS, SANM remains the lower-multiple catch-up vehicle, but its smaller scale and customer concentration make its multiple more sensitive to a single hyperscaler program delay.

The second-order beneficiary is the broader North American/nearshore manufacturing chain: AI system demand increasingly requires complex integration, optical interconnect, power delivery and liquid-cooling assembly rather than commoditized board manufacturing. That should favor CLS and JBL as well, but SANM can earn disproportionate incremental returns if it proves it can retain high-complexity programs through volume production rather than surrendering them to larger peers. Conversely, accelerating capex is not inherently bullish: return on invested capital will deteriorate if utilization does not rise fast enough, particularly if customers dual-source manufacturing capacity.

Near term, the positive cash-flow narrative is largely backward-looking after the share-price outperformance. A more durable rerating requires evidence in the next earnings cycle of gross-margin resilience, stable days sales outstanding/inventory, and AI revenue converting into higher operating income rather than merely higher throughput. Tariff escalation is asymmetric: it could redirect more production to Mexico/US facilities and create share opportunities, but abrupt country-of-origin changes can initially raise procurement costs and disrupt customer qualification cycles.

Consensus may be underestimating the dispersion within EMS rather than the AI opportunity itself. CLS and JBL have greater investor recognition as AI manufacturing beneficiaries; SANM’s discount offers upside only if management demonstrates that incremental AI revenue carries margins and cash conversion comparable with peers. Without that proof, the discount is justified by execution risk rather than mispricing.

Key Decisions for Investors

• Initiate a 1-3 month relative-value position: long SANM / short CLS in equal dollar beta-adjusted size. SANM offers catch-up potential if the next print confirms AI mix-driven margin and cash conversion; exit if SANM reports sequential inventory or receivable expansion materially above revenue growth, or cuts margin/FCF expectations.
• For lower execution risk, remain overweight JBL over SANM for the next 6-12 months. JBL has greater scale and demonstrated cash-generation capacity, making it a better core AI-infrastructure manufacturing exposure; use SANM only as a satellite position sized for higher customer-concentration risk.
• Do not chase SANM immediately following strength; add only on a pullback or after earnings validate utilization and margin progression. The required diligence items are AI-program revenue concentration, incremental capex guidance, and working-capital days—none are established by the cash-flow headline alone.
• Set an earnings watch alert for gross-margin compression, a material increase in capex without corresponding FCF guidance, or disclosed hyperscaler program timing changes. Any of these would undermine the premise that AI growth is producing economic, rather than volume-only, expansion and would favor the CLS/JBL shorts versus SANM.