In Q3 2025, Harbor Capital Advisors sold 51,177 shares of F5, Inc. for an estimated $16.02 million, reducing its stake to 17,112 shares valued at $5.53 million. This move represents 1.24% of their total assets under management (AUM) for the quarter. F5 shares were priced at $343.17 on October 14, 2025, up 56.39% year-over-year. The company provides multi-cloud application security and delivery products, with revenue from software, hardware, and services sales to large enterprises globally. Harbor Capital’s portfolio decreased from $2.4 billion to $1.3 billion from Q2 to Q3 2025.

The sale of F5 stock by Harbor Capital Advisors seems timely, as F5 recently disclosed a security breach where threat actors accessed its systems. Shares have dropped about 13% since this revelation on October 15, 2025. Despite this setback, F5 is expected to report its fiscal fourth quarter results on October 27, 2025. With 1,339 total positions and $1.29 billion in U.S. equity AUM in Q3 2025, Harbor Capital’s move away from F5 reflects shifting market dynamics and potential risks in the cybersecurity sector.

Read more at Nasdaq: Harbor Capital Advisors Sells 51,000 F5, Inc. (FFIV) Shares for $16 Million