This is a market on if Donald Trump will formally concede the 2020 US Election before December 1st, 2020, 12:00am EST. Conceding can be defined as publicly admitting to losing the election and thus not being president come next term. As per Wikipedia: "In politics, a concession is the act of a losing candidate publicly yielding to a winning candidate after an election after the overall result of the vote has become clear." If Trump tweets or publicly states that he lost or concedes the US Presidential Election, and will not be President come next term, this market will resolve to "Yes". If he says something to the effect of Joe Biden winning "but...", but in the context of him still contesting results, saying he should have won and he is taking action to try and still win, this market will resolve to "No". We are aware this market may be ambiguous, however it will be resolved in good faith as accurately as possible, by the Markets Integrity Committee (MIC). Also this Facebook Forecast question, https://www.forecastapp.net/q/TWFya2V0Ollwd0JkSUlOdzRB/, will be referenced as a leading resolution source, along with the Associated Press.