Microsoft (MSFT) had two of the top three Vol/OI (volume-to-open-interest) ratios on Thursday. Options volume was below average yesterday; that shows in the unusual options activity, with Lucid (LCID) the only other stock to have a Vol/OI ratio over 100.
The Oct. 30 $600 call and $525 call had identical 14,875-contract trades at 11:21:05 a.m. ET yesterday. The former accounted for 99% of the $600 call’s volume, while the latter accounted for 97% of the $525 call’s volume. The trades accounted for 13% of Microsoft’s total options volume that day, well below the 30-day average of 476,190.