> but I've never understood what the employee gets out of it
They may get money?
Some of these companies have valuation in hundreds of billions, and a small bit of news can nudge that +/- 0.5-2% or more which could be a couple billions dollars. If you own just 0.1% of the stock, that would be several $m opportunity . So, paying your informer, say, $100K or something, sounds reasonable, if you can execute it properly, even accounting for fake informers.
They may get money?
Some of these companies have valuation in hundreds of billions, and a small bit of news can nudge that +/- 0.5-2% or more which could be a couple billions dollars. If you own just 0.1% of the stock, that would be several $m opportunity . So, paying your informer, say, $100K or something, sounds reasonable, if you can execute it properly, even accounting for fake informers.