Hey trader,
Most flow alerts lie.
You have probably watched a 1,000-contract block get flagged on a flow service and waited for a move that never came. The setup looked clean and the print sounded urgent. The stock did absolutely nothing afterward.
The tell is one filter most services skip.
Volume at the strike has to exceed the open interest sitting there, or the contracts trading are position-holders stepping out, not new buyers stepping in.
Akamai illustrated this on Friday.
The May 15 $115 calls had 1,000 contracts trade through the session.
A surface-level scan would tag that as a block.
Open interest at the strike sat far above the volume.
The key threshold is 1.2x – the day’s volume divided by open interest at the strike.
Below that number, the print is closing churn. Above it, the print is fresh institutional positioning.
One of Friday’s 21 qualifying prints called Wells Fargo’s midday break before the chart confirmed it.
The Block Hunter Console runs the volume-to-open-interest math on every print as it lands. 21 meaningful trades surfaced in seconds Friday rather than an hour of manual filtering through 551.
The Console has lit up opportunities producing 375% on KSS in 13 days, 206% on PLUG in 5 days, and 100% on VFC in just 24 hours.
Monday at 2PM EST, I’m walking through the Console live and breaking down how the volume-to-open-interest filter surfaces the prints worth trading.
Click Here to Add the Block Hunter Webinar to Your Calendar
Why Volume Has To Exceed Open Interest
Open interest counts every contract currently held by someone in the market. When the day’s volume at a strike comes in below that number, the most likely explanation is closing trades.
Two traders with existing positions on opposite sides agree to exit. The contract changes hands. Volume registers on the tape. No new conviction enters the market.
A print like that does not show fresh positioning. The contracts are already on the books, and somebody is just stepping out of an old trade.
For a print to indicate institutional accumulation, the day’s volume has to clear the existing open interest. That is the mechanical signal that new contracts are being written rather than old ones unwound.
The Akamai Trap
Akamai is the kind of name that gets called out on lower-quality flow services.
The stock made a big move on earnings, the chart looks active, and a 1,000-contract print on the May 15 $115 calls registers on a time-and-sales scan.
A flow service tagging that print as a block would have nothing else to say about it. Open interest at the strike sat well above 1,000, which means the contracts trading were already in someone’s account, changing hands at a high delta because the strike had moved deep in the money.
Calling that a buy signal is the same mistake retail traders make every day. They see size and assume conviction.
The Block Hunter Console did not flag Akamai on Friday at all. The volume-to-open-interest test ran on the print before it ever surfaced, and it failed. The print never reached the working list.
The Thresholds That Actually Work
The filters in the Console reflect levels I have used to separate real prints from noise for 18 years.
Volume minimum sits at 2,000 contracts. Below that number, even a perfect ratio is not large enough to represent meaningful institutional sizing.
The volume-to-open-interest ratio at 1.2 is the floor for minimum significance.
A ratio of 2.0 or higher pushes the print into block trade territory, where the highest-conviction flow lives.
Tightening the volume alert to 3,000 and the ratio to 2.0 narrows the daily list further to roughly 20 to 30 prints by the close.
That is the working set worth reviewing. Anything below those numbers can be ignored without losing meaningful signal.
The Wells Fargo Print That Cleared Every Filter
Wells Fargo proved the framework on Friday morning. 26,000 June 18 $70 puts crossed the tape, with the bulk traded at or near the ask in a sweep across exchanges.
Open interest at the strike was a fraction of the volume. The volume-to-open-interest ratio came in well above 1.2. The trade size cleared the 2,000 contract floor by an order of magnitude.
The buyer wanted those puts at full price and was willing to lift the offer across multiple venues to get filled. That is what conviction looks like on the tape.
By midday WFC had broken through its $80 put wall, and the negative dealer gamma below that level pulled the price lower into the close. The print led the move rather than confirming it.
How The Framework Gets Used Daily
The Console runs the math automatically as prints land. The volume floor sits at 2,000 to 3,000 contracts. The volume-to-open-interest ratio sits at 1.2 or higher. The noise drops out before it ever surfaces.
The result is a working list short enough to actually review. The Console showed 21 qualifying prints on Friday instead of 551.
From that filtered list, the basic formula is to identify ten prints worth reviewing, build two to three trade ideas from them, and take two to three positions across the week. That is how the Console gets used by traders who treat options flow as a repeatable process.
The filter does the bulk of the work before the chart ever opens.
See exactly how Block Hunter catches institutional positioning before the crowd catches on.
Brandon Chapman, CMT
Creator of Ghost Prints
