Google's parent company Alphabet didn't last long as the world's biggest company. Apple has managed to take the throne back as the company's shares have risen since Monday. They are now trading up US$0.55 at $96.38, while Alphabet's share have slid down. This puts Apple's market capitalization (or the value of all its shares together) at $534 billion compared to Alphabet's $508 billion.
Richard Windsor, an independent analyst at Radio Free Mobile, told Independent that Apple is at a better position as Google has an increasing dependence on Apple for revenue while Apple is taking steps away from Google. They're developing Apple Maps to combat reliance on Google Maps and have allowed ad-blockers on its browsers to keep Google from making money on ads. If Apple will become successful in "booting" Google out, Google could lose $13 billion in annual revenue as well as a "collapse in its valuation."
Source: Independent