The Bill & Melinda Gates Foundation Trust invested in Apple, Amazon, Alphabet, Alibaba, and Twitter last quarter.
The investment arm of the world's largest private foundation revealed the new tech bets, valued north of $450 million in total, in a recent financial filing.
The trust also trimmed its biggest holding, Warren Buffett's Berkshire Hathaway, likely to finance the foundation's efforts to combat coronavirus.
The coronavirus sell-off fueled a 19% drop in the value of its portfolio to about $17.4 billion.