Plough, The MYG share price has risen 50% in just over a week -...

Plough,
The MYG share price has risen 50% in just over a week - with no announcement to suggest why it has occurred. Then a trading halt is called - possibly because the price was running away and mucking around with the "corporate combination" ratios and/or making the counter party grumpy and putting the deal at risk. If there was a reason other than "corporate combination" for the price rise that is related to MYG business it should be announced and taken into account in the valuation of MYG. Just left wondering what the other reason for the price rise would be; unrelated to MYG business and unrelated to the corporate combination.