Have in mind, that blue chips are not only tech or nano technology stocks!
Blue chip stock is qualified as a high-quality and usually high-priced stock. It has high price because of public confidence in company's long record of steady earnings.
Blue chip company is very strong financially, with a solid track record of producing earnings and only a moderate amount of debt. It also has a strong name in its industry with dominant products or services. Typically, these companies are large (international) corporations that have been in business for many years and are considered to be very stable.
There is no formal requirement for being a blue chip.
Blue chip index is indicator used to measure and report value changes in representative stock groupings. It is often price-weighted, it means that stocks with the highest prices will have the most influence and those with the lowest, the least influence.
→ Check out the most famous indices