Those keen to get their mitts on a piece of Mighty River Power have three weeks to apply, with the SOE expected to be listed on the stock exchange on May 10.
Nearly half a million had already pre-registered. The minimum application is $1,000, and Kiwis are guaranteed the first $2,000 they apply for, whether or not they pre-registered.
Shares will be offered at a price between $2.35 and $2.80, although that could be pushed higher by demand.
Here's a taster of what others have to say on the matter:
"It seems the surest of sure things. 'What could possibly go wrong,' the herd thunders.
Quite a lot, it turns out, if you read the 257 page offer document, as all potential investors should."
"Although Mighty River Power's prospective gross yields are higher than bank deposits it is important to remember that shares are far more risky than interest-bearing deposits at the four major trading banks."
"When I buy things I expect to know the price before I am obligated to purchase, regardless of whether it is a car, the groceries or a new ice axe. I know of no other commercial transaction where people are asked to hand over their money, and the vendor then decides how much you will get. Imagine if you went to the supermarket, gave the person on the checkout $100 and they then decided what groceries they were going to give you."
"It is a utility supplying an essential infrastructure, its main resources - hydro and geothermal power - are renewable and its customers' demands are much more predictable than, say, a clothing maker's. The sum of the parts makes for strong and relatively stable cashflows."
"Investors weighing up the Mighty River Power share offer would do well to take a peek at rival company Contact Energy."
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