Oct 27 2026 09:05 PM EST

Oct 27 2026 09:00 PM EST

AI Security Wins for Zscaler, While Brazilian Financials Face Election‑Driven Volatility

Zscaler, Inc. (NASDAQ: ZS) rallied 18.4% over the past five trading days, reaching $191.73 after reporting fourth‑quarter results that beat consensus and issuing FY27 revenue guidance of $3.91‑$3.94 billion. In contrast, Brazilian‑listed financials — XP Inc., Banco Bradesco and Companhia de Saneamento Básico do Estado de São Paulo (Sabesp) — experienced weaker five‑day performance as investors weighed election‑related sentiment, capital‑return programmes, credit‑quality concerns and the impact of recent tariff adjustments.

Zscaler’s AI‑Security Momentum Fuels Rally

The rally was anchored by a 25% YoY increase in Q4 revenue to $898.2 million, surpassing the $877 million consensus, and an adjusted EPS of $1.19, a 9% beat. Management highlighted a more than 50% sequential rise in “security for AI” bookings and a 75% growth in the AI‑security pipeline, underscoring accelerating demand for its zero‑trust offerings. The company also announced the Agentic SOC platform and expanded its Z‑Flex purchasing model, while securing a $122 million government contract.

Brazilian Financials React to Election‑Driven Sentiment and Capital Strategies

XP Inc. reported corporate‑wholesale revenue of R$606 million, a 117% YoY surge driven by derivatives, FX and credit cross‑sell, pushing total net revenue to R$4.9 billion. The firm continued an aggressive share‑repurchase programme, cancelling 11.79 million Class A shares (2.3% of total) and authorising a R$1 billion buy‑back for 2026. New digital‑asset trading platforms for bitcoin and ether were launched in August, and an AI‑driven wealth‑advisor was introduced in September, aimed at offsetting retail‑brokerage fee compression.

Banco Bradesco posted Q2 2026 net income of R$7.1 billion, up 16.2% YoY, and ROAE rose to 16.2%. The bank announced a cash dividend of BRL 0.342 per share and a R$10 billion capital increase earmarked for digital, AI and crypto‑custody projects. Insider purchases totalling $0.9‑$1.5 million signaled confidence, while short interest fell 18%.

Sabesp’s Q1 2026 results showed adjusted EPS of R$0.44, up 29% YoY, and EBITDA of R$3.8 billion, delivering a 63% margin. Shareholders approved an amended bylaws package that enables a R$70 billion investment programme through 2029, with a longer‑term plan of R$260 billion to 2060. The regulator ARSESP approved a 6.5% tariff increase effective Jan 1 2026, supporting revenue outlook.

Common Themes and Diverging Risks

Zscaler’s upside reflects sector‑wide recovery in cloud‑native security, where peers such as Fortinet and CrowdStrike have also posted strong results, and investors are rewarding AI‑driven product pipelines. The company’s forward P/S multiple of 6.41 and forward PE of 36‑41x remains below direct peers, reinforcing a risk‑reward case despite a moderated FY27 growth outlook and recent sales‑leadership turnover.

The Brazilian financial stocks are unified by election‑related volatility. The October 4 runoff between Flávio Bolsonaro and President Lula generated a surge in market‑friendly sentiment that lifted Bradesco and Sabesp shares, yet concerns persist over credit‑quality (Stage 2 loans rising, NPL ratio near 4.3%), high borrowing costs (SELIC at 13.75‑14.25%), and competitive pressure from fintech rivals. XP’s growth narrative is tempered by a leverage ratio of roughly 642% and fee‑compression in its retail brokerage franchise.

The five‑day moves illustrate how sector‑specific catalysts—AI‑driven security for Zscaler and election‑linked macro dynamics for Brazil’s financials—are reshaping investor positioning. Continued strength in Zscaler’s AI pipeline could sustain its upside, whereas the trajectory of XP, Bradesco and Sabesp will hinge on election outcomes, credit‑risk developments and the execution of capital‑intensive projects.