Every trading day, billions of dollars flow through the options market. Most of it is noise. Retail traders buying lottery tickets. Market makers hedging inventory. Algorithms executing spread adjustments.
But buried in that noise, sometimes you find a signal. A stock that normally trades 2,000 option contracts suddenly trades 25,000. That kind of spike doesn’t happen by accident. Someone knows something. Or at least, someone with a lot of capital thinks they do.
Finding those spikes is what sizzle screening is all about.
What Is the Sizzle Index?
The sizzle index is a ratio that compares a stock’s current options volume to its average options volume over the past five trading days.
Sizzle = Today’s Options Volume / 5-Day Average Options Volume
A sizzle of 1.0 means normal activity. Nothing unusual. A sizzle of 2.0 means twice the normal volume is trading. A sizzle of 5.0 or higher? Something is happening that the broader market may not have caught onto yet.
Thinkorswim popularized this metric, and it remains one of the cleanest ways to screen for unusual activity. Most professional platforms have some version of it.
The concept is simple. When smart money makes big bets, they leave footprints in the options chain. The sizzle index helps you see those footprints.
Call Sizzle vs. Put Sizzle
Total sizzle tells you something unusual is happening. Breaking it into call sizzle and put sizzle tells you which direction the money is flowing.
High call sizzle, normal put sizzle: Bullish. Traders are loading up on calls. They’re positioning for upside. Could be an earnings beat, an acquisition, a catalyst that insiders are getting ahead of.
High put sizzle, normal call sizzle: Bearish. Large put buying often precedes bad news. It can also indicate hedging by institutional holders who own the stock but want downside protection. Either way, it’s defensive positioning.
Both high: The market expects a big move but isn’t sure which direction. This often shows up before binary events like FDA decisions, major legal rulings, or contested earnings. Straddle and strangle buyers drive this pattern.
The directional skew of the sizzle is more informative than the raw number. A stock with 4x call sizzle and 1x put sizzle is telling a very different story than one with 4x sizzle on both sides.
What Makes Good Sizzle
Not all unusual activity is worth following. Here’s how to filter signal from noise.
Volume vs. open interest. If a stock trades 10,000 contracts at a strike that had 50 open interest, those are new positions being opened. That’s aggressive positioning. If the same strike had 12,000 open interest and 10,000 contracts traded, it might just be existing positions being closed. New positions matter more than closing trades.
Where in the chain? Out-of-the-money calls with heavy volume and low open interest are aggressive bullish bets. Someone is paying up for the right to buy at a higher price. Same logic applies to OTM puts on the bearish side. ATM activity is harder to read because it could be hedging, rolling, or market-making flow.
Size of individual trades. A single block order of 5,000 contracts is more meaningful than 5,000 contracts scattered across hundreds of small trades. Block orders indicate institutional or professional activity. Scattered small orders are more likely retail.
Time of day. Unusual activity in the first hour of trading is often institutional. Activity in the last 30 minutes can be closing adjustments or end-of-day positioning. Midday blocks, when retail attention wanders, are often the most telling.
Dark Pool Prints and Options Flow
Options activity doesn’t exist in a vacuum. The smartest screeners cross-reference options flow with dark pool activity.
Dark pools are private exchanges where large institutional orders execute away from public exchanges. When a stock shows heavy dark pool buying (large blocks at or above the ask) combined with elevated call sizzle, that’s a multi-signal confirmation. Big money is buying stock AND buying calls. That’s conviction.
Services like FlowAlgo, Cheddar Flow, and Unusual Whales track this kind of activity in real time. The raw data is available through the FINRA ADF and TRF feeds, but unless you’re building your own scanner, a dedicated platform saves hours.
What you’re looking for: convergence. Options sizzle pointing one direction and dark pool prints confirming it. When multiple signal types agree, the probability of a meaningful move increases.
Combining Sizzle with Insider Buying
This is where things get really interesting.
Insider buying is one of the strongest signals in equities research. When a CEO drops $2 million of personal money into their own stock, they’re putting their wallet where their mouth is. Studies going back to the 1960s show that stocks with significant insider buying outperform the market by 7-10% annually.
Now layer options sizzle on top of that. A stock where the CFO just bought 50,000 shares on the open market AND call sizzle is running at 3x normal? That’s two independent signals pointing in the same direction from two different pools of informed capital.
Corporate insiders know the business. Options market participants know the flow. When both groups are betting the same way, something is usually brewing.
This multi-signal approach is the foundation of how we think about opportunities at Money Printer Pro. Any single signal can be wrong. Insiders buy stocks that go down. Options flow can be misleading. But when you stack signals from different information sources, the hit rate goes up materially.
Building a Screening Routine
Here’s a practical daily workflow.
Morning scan (before 10 AM ET): Pull up your sizzle screener. Filter for stocks with sizzle above 2.0 and average daily volume above 1,000 contracts (filters out illiquid names where one trade skews everything). Note the call vs. put breakdown.
Cross-reference: For any stock that pops up, check recent insider filings on the SEC’s EDGAR system. Has anyone bought shares in the last 90 days? Check the news feed. Is there a catalyst on the calendar?
Evaluate the chain: Look at where the volume is concentrated. What strikes? What expiration? Is it new positions or closing trades? A cluster of activity at a specific strike and date gives you a clear read on what the smart money expects.
Decision framework: If sizzle confirms your existing thesis on a stock, it’s a green light to add or initiate a position. If it contradicts your thesis, it’s a warning flag. If it shows up on a stock you’ve never looked at, it’s a research prompt, not an automatic trade.
What Sizzle Won’t Tell You
The sizzle index has real limitations. It won’t tell you why activity is elevated. A pharmaceutical stock with 5x call sizzle could be ahead of a drug approval, or it could be a large fund rolling a hedging position. Both look the same on the screener.
It also won’t tell you timing. Heavy call buying at the January 2027 expiration is a very different signal than heavy call buying at this Friday’s expiration. Long-dated institutional positioning is a slow burn. Short-dated activity implies an imminent catalyst.
And it can be wrong. Smart money loses money too. Following flow blindly is just a more sophisticated version of following tips. The edge comes from combining sizzle with your own analysis, confirming through multiple signals, and sizing your trades so that the inevitable misses don’t hurt you.
Sizzle screening is a tool. A good one. But like any tool, it works best when you know what you’re building with it.