It means that the buyer has put in a buy price of $1. That is the maximum price that he (lets asssume it is a he) is prepared to pay for the shares. If the indicative price is 95cents, then the buy and sell will match up at open and a sale will transact at market price - in ths case 95 cents or id it runs up, the price will happen at any price up to a dollar.
It is a way to ensure that your buy happens on the open and is only ususally done when you think that the price may runup quickly on open and you are prepard to put a premium in to make sure it happens - a good sign generally
the opposite can happen also - if you are worried about a SP dive. You can put your shares up for sale at 90 cents even though the opening price was 95cents. This would ensure you an immediate sale on open
Only a crazy person would be contemplating this with UNI imo
hope this helps?
UNI Price at posting:
95.0¢ Sentiment: Buy Disclosure: Held
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