Stop laughing about GameStop’s stock mania — no, really

After watching a third consecutive day of Redditors helping to push the stock of a beleaguered retail chain to an undeserved record valuation of more than $10 billion Tuesday, I saw rapid fire jokes on Twitter about the situation.

So I fired off a response to the general tone of the conversation.

“I get that people think it’s funny when bad things happen to Wall Street types, but this GameStop GME, +2.68% thing is not a joke,” I tweeted. “These are stock traders conspiring to manipulate the markets in open...