Where the name came from is unclear. One theory says that on this day traders' trades are so high that they can compensate for the losses and, thus, return to black from the "red numbers". Thus, entry into Black Friday marked the hotly contested Christmas business. In addition to Black Friday, the so-called "Cyber Monday" also established itself in Germany, where many discounts are also expected from online stores. Cyber Monday will be held this year on Monday after Black Friday.