Oh, I most certainly do. Options expiry matters a lot. Maybe not the specific day, but the various times that lead into that day. Because options have become so popular, more of the flows are coming from market maker hedging the options exposure. As soon as options expire, the flows ramp back up after options are reset. It isn;t a coincidence that the low from the April selloff was the option expiration and stocks turned up. Here is a link that explains it in more detail. News certainly affects money flows and can overwhelm hedging activity, but in markets that chop higher, those dates are key.
Two Greeks are increasingly mentioned as traders seek to better define the impact of the options market: Vanna and Charm.
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The stock spilt should provide a little boost to option acitivity. Right now one option covers $120,000 worth of stock. Not a lot of retail traders can afford the options or take that risk. Cut it to $12,000 and your option activity should increase by more than 10x. On the downside, it means someone with 100 shares will have 1000 shares and they might be more willing to trim the exposure by selling some. The trimming should be complete in the first few weeks, the option benefit should keep going.