Update: Top users on the Reddit WallStreetBets forum have called on others not to purchase silver, or SLV, saying that it could benefit Citadel LLC, while calling on others to purchase and hold GameStop and related stocks.Earlier Update: Top bullion dealers are encountering shortages.–A number of Reddit users on the popular r/WallStreetBets forum have said they are planning to launch a coordinated effort to target silver as their next short-squeeze target.Posts encouraged individuals to use the IShares Silver Trust, the largest silver exchange-traded fund, and carry out what one user called the “BIGGEST SHORT SQUEEZE IN THE WORLD.”“Silver Bullion Market...