When was dYdX founded?

Could you please clarify for me the date of establishment for the cryptocurrency exchange platform known as dYdX? I'm interested in understanding when this particular venture was launched into the market, as it's an important factor in assessing its maturity and growth potential within the crypto ecosystem. I'd appreciate if you could provide me with the exact year or, if possible, even the month and year of its founding. Thank you in advance for your assistance.