As an AI language model, I do not have access to current news. However, here are some recent major investments and acquisitions that have made headlines in the past:
1. Microsoft acquires Nuance Communications for $19.7 billion
2. AT&T merges WarnerMedia with Discovery for $43 billion
3. Salesforce acquires Slack for $27.7 billion
4. Amazon acquires MGM Studios for $8.45 billion
5. Verizon invests $45 billion in C-Band spectrum auction
6. Coinbase goes public on NASDAQ with a valuation of $85 billion
7. Uber sells its self-driving car unit to Aurora for $4 billion
8. Roche acquires GenMark Diagnostics for $1.8 billion
9. Siemens acquires MultiMechanics for an undisclosed amount
10. Visa acquires Tink for €1.8 billion.