Bing found the following results
Windows XP - Wikipedia
XP Inc (XP) Stock Price & News - Google Finance
XP Inc. (XP) Stock Price, News, Quote & History - Yahoo Finance
XP Inc. (XP) Stock Price, Quote, News & Analysis - Seeking Alpha
XP Inc. Class A Common Stock - Nasdaq
Windows XP support has ended - Microsoft Support
XP Inc. (XP) Stock Historical Prices & Data - Yahoo Finance
XP Inc. (XP) Latest Stock News & Headlines - Yahoo Finance
XP | XP Inc. Cl A Stock Price & News - WSJ - The Wall Street Journal
Green Hills Forever: Windows XP Is 20 Years Old - How-To Geek