Mr. Trump's meme coin soared after it debuted, hitting a peak of almost $75 each. But the price has shed about 45% of its value since then, settling at about $40 per coin on Monday afternoon ...

In the up-and-down world of cryptocurrency, so-called meme coins are perhaps the most bewildering. The joke-inspired digital currency is all over the internet with new tokens popping up every day ...

The meme is not under McDonald’s control, but this level of engagement and enthusiasm can’t be bought; the Grimace Shake meme is free advertising, a viral marketing campaign led by the public ...