Qualys, Inc. (NASDAQ:QLYS) reported a significant shift in its ownership structure during the second quarter.

The California State Teachers Retirement System (CalSTRS) increased its stake in the cybersecurity firm by 13,255.9%.

CalSTRS purchased 5,609,484 additional shares according to the latest SEC filing.

The pension fund now holds a total of 5,651,801 shares.

This investment represents an approximate 16.33% ownership stake in Qualys.

The total position was valued at $777 million on the filing date.

Other large institutional investors have also reportedly increased their holdings in the company.