A 10-Year-Old GameStop Investor Cashed In. His Return? Over 5,000%

“All of a sudden, I heard ‘ding, ding, ding, ding, ding,’” Ms. Carr, 31, referring to the stock alerts, said in an interview on Friday. “I grabbed my phone, and I was looking at it, and it said $351. I was shocked: ‘I bought this thing at $6,’ I thought, ‘there’s no way this can be right.’”

Ms. Carr, a nutritionist, quickly pulled her son out of virtual learning and asked him what he wanted to do. “I was trying to explain to him that this was unusual,” she told mySanAntonio.com, a segment of the San Antonio Express-News. “I asked him, ‘Do you want to stay or sell?’”

Jaydyn decided to sell his shares, earning $3,200 — a return of more than 5,000 percent on an investment of about $60.

“I felt shocked and excited at the same time,” he said in a phone interview on Friday.

He said he had decided to save $2,200 and invest the remaining $1,000, most likely in shares of Roblox, an multiplayer gaming universe popular with young children, if and when the platform goes public.

“Long-term investing is important because that is how I got this money,” Jaydyn said.

The surge has piqued Jaydyn’s interests in amateur day trading. “He’s definitely ready to jump full force into the market,” his mother said.