Hey Zoloma — so sorry for the late reply, totally missed this! That was a put sell (cash-secured put) at the $110 strike — meaning I sold the right for someone else to put shares to me at $110. I collected the premium upfront and my job is to wait for it to decay. If MRK stays above $110, I keep the full premium. If it drops below, I get assigned 300 shares at an effective cost of ~$107.96 (strike minus premium). Either outcome works for me since I'm fine owning MRK. I'll be checking comments more regularly going forward — appreciate you following along and don't hesitate to ask questions!