broker can not manipulate the price to do a buy back and there are very specific rules around how many can be bought every day (as a % of what is sold that day) and also how much they move the market.
As you will see in the announcements they have a min and max price they are allowed to pay to ensure that they are buying at the market price rather than moving or making the price. I think it is worked out as a % move of the last 5 days average price. As such I think they will struggle to buy the 13m over the next 12 months.
The buy back however will pay large dividends at a eps level esp if they can keep getting them around 10 - 11c.
I think that it is a great share to hold as a small % of your portfolio as I can't see much downside from here. Also if we get more upwards pressure on the price of oil then suddenly a lot of the slowly moving projects will move faster!
ISS Price at posting:
10.0¢ Sentiment: LT Buy Disclosure: Not Held