The crawl at the bottom of the screen on CNBC (or any other financial news source)…I understand (I think) that each entry is a trade: the company name/symbol, number of shares, price of that trade, and up or down on the day.
Which trades get listed? All of them?
Why are there two streams going (top and bottom half)? Why does the bottom half move more slowly than the top half?
They’re two different tickers. I think the fast one is the NYSE and the slow one is the NASDQ. But this is going from memory. I’ve not paid any attention for some time.
All trades get listed. The information gives the stock symbol, the price, and the number of shares. If no number of shares are listed, then it’s assumed 100 shares.
Thus “GE 19.75” means 100 shares of GE at $19.75.
“T 35.00 10,000” means 10,000 shares of AT&T at $34.
They’re different speeds so as to aid reading. If they were the same speed, you could only read one or the other. Moving differently causes the symbols to stagger.
I can’t imagine that all trades could be listed in the crawl at the bottom of the CNBC screen. I mean, there are hundreds of stocks on the NYSE and presumably dozens or hundreds of trades on each in a given hour. How could the crawl possibly show them all in real time?