It’s a momentous day for Mark Zuckerberg and the Facebook team as the founder rang the NASDAQ’s opening bell at 9:30am this morning on the East Coast of the United States.

To celebrate the moment, Zuckerberg updated his status to read: “Mark Zuckerberg listed a company on NASDAQ. — with Chris Cox and 4 others.”

the status update went live just as Zuckerberg was ringing the bell, which means that it was configured by engineers to appear just as he was in action.

According to Venture Beat, engineers actually “hacked” the NASDAQ button to post the update according to David Garcia, a senior software engineer at Facebook:

“We hooked up our hack to run at exactly the same time as Mark pushed the button to turn on the light and ring the bell. Then we attached a wire that hooks to the hack and into the headset jack of a cell phone,” Garcia said. “When the button was pressed, it sent a signal through the hack, and the phone got the signal that triggered the custom action through our Open Graph API, posting a story onto Mark’s Timeline. It worked.”

Facebook shares will begin trading at a price of $38 each, at around 11am Eastern time in the U.S. on Friday morning. Since boosting its IPO by 25 percent on 16 May, Facebook’s valuation sits at about $104 billion.