Here are a few options for a formal rewrite, depending on your focus:

• President Ruto Questions Opposition Agenda Amid Allegations of Public Misinformation (Most standard and precise)
• President Ruto Challenges Opposition Strategy Amidst Misinformation Allegations (More formal register)
• Ruto Critiques Opposition Stance Amid Claims of Disseminating Public Misinformation (Formal and descriptive)

Recommendation: The first option is the most balanced and professional for a news-style or formal report headline.

Here is a formal, concise version of your title:

Global Financial Markets and Economic Update: Live Stock, Indices, and IPO News

Here are a few options for a formal rewrite, depending on the level of conciseness you prefer:

• Option 1 (Most formal): Trump Attributes Failed Gubernatorial Endorsement in Iowa to Misinformation
• Option 2 (Direct): Trump Claims Misinformation Impacted His Iowa Gubernatorial Endorsement
• Option 3 (Concise): Trump Cites Misleading Information for Failed Iowa Endorsement

Recommendation: Option 1 is the most professional and appropriate for a news headline.