As this past holiday shopping season revealed, increasingly more consumers are buying goods and services online — and especially on mobile devices.

Globally, online transactions have seen increases across market segments from travel and accommodations to apparel and home goods. And for the global, publicly traded companies doing business online, the increase in Internet retailing has made it one of the top growth segments in the consumer discretionary sector. According to the S&P, the Internet retail and catalogue segment has an average year-over-year growth rate of 14.8 percent, which puts it far ahead of other retail goods and services firms.

Traders have noticed. The total market capitalization of the Internet retail and catalogue segment as classified by the S&P is $570 billion. But the lion’s share of that market cap is garnered by Internet giant, which takes the number-one spot with $273.5 billion in market cap.

The top 25 companies in the segment include with $52 million in market cap at number two, and Netflix in third with $39 million. has the number four position with $37.4 billion in market cap. Online fashion firm Yoox Net-a-porter Group SpA came in at number 14 with $4.4 billion in market cap.



Top 25 Internet Retail and Catalog Companies Ranked by Market Cap

Company: Market Cap (in $U.S. billions):
1. Inc. $273.5
2. The Priceline Group Inc. $52.0
3. Netflix Inc. $39.0
4. Inc. $34.7
5. International Ltd. $18.7
6. Liberty Interactive Corp. $15.9
7. Expedia Inc. $15.0
8. Rakuten Inc. $14.3
9. TripAdvisor Inc. $9.7
10. Zalando SE $8.3
11. Vipshop Holdings Ltd. $7.3
12. Qunar Cayman Islands Ltd. $5.9
13. Liberty Ventures $5.5
14. Yoox Net-a-porter Group SpA $4.4
15. Wayfair Inc. $3.7
16. ASOS Plc $3.6
17. Start Today Co. Ltd. $3.4
18. HSN Inc. $2.4
19. Ocado Group plc $2.3
20. Zulily LLC $2.2
21. ASKUL Corp. $1.7
22. Liberty TripAdvisor Holdings Inc. $1.7
23. Groupon Inc. $1.7
24. Happigo Home Shopping Co. Ltd. $1.6
25. Home Retail Group plc $1.5

Source: S&P Capital IQ as of Jan. 27, 2016