Any ideas on why the price went from 44.5 c prior to the end of...

Any ideas on why the price went from 44.5 c prior to the end of day auction and then close at 46.5c. I can't understand why you would wait till the end of the day to pay 46.5c for a stock that you could have bought for 45.0c during the day? I was watching the market depth on and off during the session and there was more than 100,000 shares on the sell side at 45.0c which hardly got a nibble. I missed watching the auction so I am at a loss to understand what happened. Did the 45.0 ask get pulled during the auction?