Musk’s “ingratitude” tweet might be the most costly social media post of all time

Unless you were on a social media cleanse yesterday, you probably saw that the world’s wealthiest man and the president of the United States are no longer friends. They made that clear by exchanging barbs that started off with a policy disagreement and ended up very personal.

It appeared the gloves came off when Musk said Trump would not be in office if it weren’t for him.

“Such ingratitude,” Musk posted on X, his social media site. Of course, the president responded through his own social media site, Truth Social.

By the end of the day, Tesla had lost $153 billion of its market cap and Musk had lost $33.9 billion of his personal wealth, as the company’s ability to continue benefiting from its CEO’s coziness with the government became unknown.

When you stack it up against other well-known posts that destroyed lots of shareholder value, the “ingratitude” post appears to go down as the most costly social media post ever, by far:

In 2022, a fake Twitter account posing as Eli Lilly posted that “insulin is free now.” The company lost $15.6 billion in market value.

In 2018, Kylie Jenner posted a modest critique of Snap that led the company to lose $1.3 billion in market value. (At the time, the company had just changed its app layout and it appeared to be unpopular with more people than just the reality TV star.)

On 2017, Trump tweeted that Amazon was hurting tax-paying retailers and costing jobs, causing it to lose as much as $6 billion in market value during intraday trading. It closed $2.1 billion slimmer.

Not included on this list are tweets that destroyed and then quickly recovered market value, of which there are many. I mean, how could we forget this?