I have a bit under 1/4 million shares in my IRA no

I have a bit under 1/4 million shares in my IRA now. I also took advantage of the last 2 weeks, sold shares from another company and invested all into here with 502,000 shares now. I have a total of 742,000 shares now total. I guess my putting more money into it after the sale of my house might not make it into these incredible share prices anymore. It looks like at least very easily my retirement 3 months back will have no more money worries down the road...