It's been a long time coming, but Apple has officially become the most valuable company in U.S. history, reaching a record market capitalization today of $623 billion. That number surpasses the high that Microsoft reached in the late 90s of $620 billion, and makes Apple only the second company ever to reach a value above $600 billion.

This is all because Apple's stock price reached a new record high today of $663.92 after announcing record sales from their holiday quarter. Analysts believe that the stock will push higher and that it's still a good time to buy shares, but of course the people sitting pretty are the ones who bought in in the 80s and never sold.

Apple had previously become one of only five companies to reach a market cap over $500 billion, surpassing Exxon. Meanwhile, poor Microsoft is floundering with a market cap of about $260 billion these days, and that high from 1999 would be about $800 billion now if it were adjusted for inflation.

So, go put on your white headphones and become another walking advertisement. Now.

[Mercury-News]