Zscaler Gains 1.47% on $240M in Volume Ranks 426th as Institutional Investors Trade Amid Cybersecurity Surge

Zscaler (ZS) rose 1.47% on August 15, 2025, with a trading volume of $0.24 billion, ranking 426th among stocks by daily liquidity. Institutional investors, including SouthState Corp and Vanguard Group, increased their stakes, while entities like ING Groep NV and Raiffeisen Bank International AG added to their positions. Meanwhile, firms such as Allianz Asset Management and EFG Asset Management Americas Corp reduced holdings. The stock’s recent performance coincided with heightened market focus on cybersecurity threats, as Zscaler reported a 146% surge in ransomware attacks in 2025.

The company’s strategic expansion continued with the acquisition of Red Canary, aiming to enhance agentic AI-driven security operations. Additionally, Zscaler partnered with IGEL to expand zero-trust capabilities via the Zscaler Client Connector on the IGEL App Portal. Analysts at UBS raised the price target to $365, reflecting confidence in the firm’s growth trajectory. Short interest in ZS rose sharply in July, a potential indicator of near-term volatility.

Zscaler’s 27.1% trailing free cash flow margin and 24.3% annualized ARR growth underscore its financial strength. However, the cybersecurity sector remains competitive, with rivals like Palo Alto Networks and Fortinet also influencing market dynamics. Institutional trading activity suggests mixed sentiment, balancing optimism about Zscaler’s innovation with caution amid sector-wide challenges.

The strategy of buying the top 500 stocks by daily trading volume and holding them for one day from 2022 to 2025 yielded a total profit of $10,720, with a cumulative return of 1.08 times the initial investment. This approach highlights the role of trading volume in identifying active stocks, though outcomes may vary with market conditions.