Yo Pit Crazies,

The VIX closed Monday at 15.77.

That's the lowest reading in a month. Look at that number alone and you'd think somebody put the whole market to sleep.

Don't believe it.

The VIX measures what traders expect the S&P 500 to do over the next 30 days.

Right now that number is telling you almost nothing about what's happening to your actual positions.

One Number, Two Completely Different Markets

Here's the deal: Over the last 30 sessions the S&P delivered realized volatility (how much something has actually moved, as opposed to how much traders guess it will move) of about 13 percent.

The Invesco QQQ Trust (QQQ) delivered nearly twice as much, 25 percent.

The VanEck Semiconductor ETF (SMH)? 54 percent.

Chips have been four times as violent as the index that supposedly speaks for them.

Want it plainer? Over those same 30 sessions, SMH moved more than two percent in a day 20 separate times.

The SPDR S&P 500 ETF (SPY)? Not once.

And before somebody tells me a couple of gap days are carrying the math, I threw out the three biggest moves in each name.

SMH still comes in at 46 percent.

SPY still comes in at 11.

The Oven Is On and the Window Is Open

The average temperature in my house would read just fine right now. The oven's going in the kitchen and the back window is wide open. Average says comfortable, and neither room is comfortable.

That's your index. Money isn't leaving this market, it's moving across it, and the S&P absorbs the traffic so smoothly that the headline volatility number goes quiet.

Again, the calm is real. It just isn't where you're standing.

Here's the part that should stop you: QQQ's 30-day realized vol is higher today than it was in mid-April, when the market was scraping its lows. Nobody called April calm.

Two Takeaways

Stop sizing single-stock positions off an index number. If you're in chips, your risk isn't 13 percent vol, it's 54. Size for the market you're standing in, not the one on the ticker crawl.

Second one nobody wants to hear: the S&P's 10-day realized vol is 16.4 and climbing while the VIX sits at 15.77. Index options are charging you less than the index has actually delivered for two weeks.

When I was a floor trader, we had a word for selling something below what it's worth. A mistake.

Cheap protection doesn't stay cheap. It stays cheap right up until it doesn't.

Speaking of things the index isn't pricing, Mark, Garrett and the crew break down the SpaceX situation live Tuesday at 4:15 PM ET. Tap this link for the primer and the room details:

Hopefully this was helpful,

Andrew