Dating a gun by serial number
It began the day trading at a high of .19 per share.
It is normal for the share price of gun makers to spike immediately after a mass shooting.
Security video shows the owner being pushed down to the ground and pummeled by the gunman.
Wednesday's mass shooting at a Florida high school which killed 17 people briefly lifted shares of gun manufacturers before coming back down to pre-shooting levels on Thursday.
During trading on Wall Street, the stock prices of Sturm Ruger and Smith and Wesson's parent company, American Outdoor Brands, rose by as much as 2.8 percent and 4.5 percent respectively, according to CNBC.
But with Barack Obama no longer president and a pro-NRA Donald Trump in the Oval Office, gun sales have recently slowed down.
This is due to the fact that there's no sense of urgency among gun owners to buy more firearms with the Republicans firmly in charge in Washington, according to Bloomberg News.