Stonebridge Financial Group Expands Alphabet Holdings Stonebridge Financial Group LLC has acquired a significant stake in Alphabet Inc., purchasing 30,686 shares valued at $5.8 million during Q4 2024. This move aligns with broader institutional interest, as 40.03% of Alphabet's stock is held by such investors. Recent insider sales, including Ruth Porat's $3.2 million transaction, highlight dynamic trading activity.1