Top 20 public companies headquartered in Illinois and north-west Indiana, US

Rank	Company	Market capitalisation
1	Abbott Labs	104,403
2	McDonald’s	90,539
3	Caterpillar	57,481
4	Boeing	57,438
5	Mondelez	45,778
6	Baxter Intl.	36,946
7	Walgreen	34,279
8	Deere	33,431
9	Illinois Tool Works	28,405
10	Kraft Food	26,978
11	Exelon	25,505
12	Discover Fin. Svcs.	19,434
13	Allstate	19,420
14	Ventas	18,918
15	General Growth	18,449
16	Arch. Dan. Mid.	18,295
17	Equity Residential	18,210
18	CME Group	16,916
19	Motorola Solutions	15,310
20	W.W. Grainger	13,899

Source: Chicago Tribune