This market resolves YES after the MLB officially announces that a team will be based in Salt Lake City, Utah, and that team plays a home game. Only the official announcement needs to occur before 1 January 2030; the home game may occur after 1 January 2030.
[MLB Commissioner] would be disappointed if A’s Las Vegas ballpark not open by 2028, skeptical of Olympics
"Manfred said a decision to expand to 32 teams could be made within five years but the new teams wouldn’t start play until 2029 at the earliest."
https://apnews.com/article/mlb-owners-as-olympics-eb8546d78d9b556488d4748395dbf584
I thought my resolution criteria were watertight, but there appears to be some ambiguity with the A’s looking for a temporary home. I am going to sell my shares in each of my MLB expansion markets to avoid conflict of interest and put my profits thus far into the respective market’s liquidity.