Companies registered by month in 1891
- January - 4 companies registered
- February - 7 companies registered
- March - 6 companies registered
- April - 11 companies registered
- May - 10 companies registered
- June - 11 companies registered
- July - 7 companies registered
- August - 5 companies registered
- September - 5 companies registered
- October - 5 companies registered
- November - 6 companies registered
- December - 12 companies registered