Robbie Burns tips nearly always go up after he tips them, however some do drop back.
The thing is if I was writing on the teletext pages, or any of us, then we would see the same effect. That's great when he is tipping one of your shares, such as OMH today.
The problem will come in one, two or may be more weeks time when he says he is selling them because i.e. they do not look like getting a deal to market the device for 'x' amount of time. Then we will see all the sheep selling out and the price drop back to less than what it started at today.
I hope Mr Burns has done his homework with this one and is going to hold it for the medium term when we may get news on a marketing partner and updates on other devices.
I think, though, that he picks certain stocks, such as OMH thast have a good following and knows he can get a quick rise out of tipping on the T.V. Let's hope I am wrong.