Starting 2/23 the exchange where ARYC is trading is OTO instead of the usual OBB. Not sure what the difference or implications are. Yahoo Finance does not show activity for ARYC since this change occurred.
ARYC - Time & Sales
Price Size Exch Time 0.29 700 OTO 10:22:37 0.221 4000 OTO 02/24 0.25 5000 OTO 02/24 0.25 2500 OTO 02/24 0.25 2500 OTO 02/24 0.24 1000 OTO 02/24 0.26 3900 OTO 02/24 0.21 750 OTO 02/24 0.25 10000 OTO 02/23 0.24 10000 OTO 02/23