The California State Teachers' Retirement System (CalSTRS) purchased 40,446,580 shares of Fiserv, Inc. This transaction increased the pension fund's stake by 4,348.7%.

CalSTRS now holds 41.38 million total shares. This position represents 7.78% of the company. The total investment is valued at approximately $2.03 billion.

Fiserv's recent quarterly revenue and earnings per share fell below analyst expectations. Institutional investors now own 90.98% of the company's stock.