Transaction revenue increased $633.2 million, or 137%, for the year ended December 31, 2020 compared to the year ended December 31, 2019 primarily due to a 142% year over year increase in Trading Volume.<p>Subscription and services revenue increased $25.0 million, or 126%, for the year ended December 31, 2020 as compared to the year ended December 31, 2019.<p>Wow, $1B transaction revenue and $44M subscription revenue. These guys are making a lot of money for a pure digital product.