What's happening below is a snapshot of 1/3 of a second of one stock's life while it's being bombed…

Pretty nuts. This next chart is just gorgeous. It shows everyone and their mom jumping into the tra…

This first chart shows actual executed trades in Amgen over 3 minutes. The gray part is the spread …

We've written about Nanex's powerful technology before, but this is just amazing. The research firm…

Firms can also capitalize on that early information by buying a related product on another exchange…

"They've firmly established their place in the market ecosystem, primarily serving as a facilitator…

John Normand, head of cross-asset fundamental strategy at JPMorgan, said in a note that his base ca…

"As we were already on the road to Jersey City, we got a call. Seems there’d been a slight software…

Authorities are exploring potential holes in the system, including new algorithms referred to as “n…

Day trading is a method of investing that relies on frequent trades of a security throughout the da…

At this point the book's message should be familiar. Lewis tells the story of a bunch of traders at…

Net income fell 82 percent to $24.6 million in the nine months ended Sept. 30, compared with $134.8…

Perhaps that's why CAST, a software analysis company that services many financial firms, sent us th…

Bloomberg Businessweek's Sam Grobart has a great little presentation this morning comparing one of …

New exchange-traded funds tied to Democratic and Republican stock holdings are designed to both tur…

Although we believe that the abuses identified in Flash Boys don't significantly impact us, our tra…

Valued at as much as $3 billion, the company was hoping to raise $100 million in its IPO - maybe ev…

The Trade Desk’s Tejinder Gill on why CTV and open internet is the future of programmatic advertisi…

Swing trading is a strategy where investors trade stocks and other securities based on "swings" in …

There is a regulation that requires stock exchanges to execute all trades at the National Best Bid …