evidence: The value of former President Donald Trump’s social media company spiked Monday after he was injured in an attempted assassination over the weekend. [...] At current prices, Trump’s 114.75 million shares in Trump Media are worth nearly $5 billion. That’s up from $3.5 billion on Friday, the day before Trump was shot at a rally in Butler, Pennsylvania. [...] Experts have said Trump Media is a meme stock: trading on momentum and hype, not fundamentals.