Key takeaways · 6
screen float>500m rs<40is the control group for the whole low-float thesis in this series: names with a battleship-sized float, 500 million shares or more, that are also ranking below the market's median relative strength.- Float size alone says nothing about quality. Money-center banks, integrated energy majors and decades-old industrial names routinely carry floats in the hundreds of millions or billions of shares, simply from years of secondaries, mergers and stock splits.
- Price impact scales inversely with float. The same dollars of net buying that can send a 20 million-share float up double digits barely register against a 500 million-share float, because the demand is diluted across far more standing supply.
- Drop the
rs<40ceiling andfloat>500malone returns a very different list: some of the market's most durable multi-year leaders carry enormous floats and still rank in the 90s onleaders. The laggard read only appears once weak relative strength joins the huge float. - A big share count and a loose float are not the same thing. A stock can carry 500 million shares outstanding and still be tightly held if insiders control most of it; float and float percent (
fp) answer different questions. - This is the same command grammar the rest of the cluster runs, pointed at the opposite structural condition. It is exactly as reproducible on tonight's close as any low-float screen: a lens on the mechanic, not a stock pick.
The stock that shrugs off good news
Every so often a company beats on earnings or lands a real piece of news, and the stock moves a point and a half. Meanwhile a name a tenth its size gaps double digits on a press release nobody outside the ticker had heard of that morning. The difference is rarely the quality of the news. Often it is arithmetic: how much supply sits between a buyer and a real move in price.
Every other essay in this cluster argues that a thin float amplifies a stock's response to demand. The way to test that argument is to build the opposite screen: go looking for the largest public floats trading today and see what their relative strength looks like. screen float>500m rs<40 is that screen, the control group the rest of the thesis leans on.
Typed live: the control-group command decoded clause by clause. The same dollars of buying move a 500M float about 25x less than a 20M float.
Running the control group
screen float>500m rs<40 combines the float floor with a relative-strength ceiling: rs<40 keeps only names ranking below the market's median strength. Space-separated predicates AND automatically, so the result is the intersection: battleship floats that are also underperforming, a narrower group than float>500m alone.
Run it against tonight's close and read the list the way you would read any other screen: one row is one name, and a weak RS column sitting next to a nine- or ten-figure float count confirms that size of supply and strength of demand are separate questions. Treat it as a way to watch the float mechanic play out on real names, rather than taking the thesis on faith.
Price impact per dollar of buying scales inversely with float. A battleship float needs an outsized wave of demand just to produce the kind of move a thin float manages on ordinary volume.
Big float, no verdict
Pull the rs<40 ceiling back off and float>500m by itself returns a much friendlier list. Some of the market's most durable multi-year trends sit on top of enormous floats: names carrying hundreds of millions or billions of shares that still show up ranked in the 90s on leaders. Float size, on its own, is just a supply number, no quality judgment attached.
What correlates with grinding, reluctant price action is the pairing: a huge float and weak relative strength together. That combination means a stock needs an outsized wave of demand just to hold its place in the market's ranking, and right now it is not getting one. Swap the ceiling for a floor, screen float>500m rs>80, and the lesson flips: enormous floats the market is still bidding for anyway. Float is a constraint on a move. It is not a verdict on the stock.
Float and float percent are separate questions too. A 500 million-share float sitting inside a company with 2 billion shares outstanding is loosely held, a quarter of the register free to trade. The same 500 million-share float inside a company with 600 million shares outstanding is almost entirely public, tightly wound around a small base. Same float count, two different structures; fp is the field that tells them apart.
Back to the thin-supply thesis
Reading a name through this screen is a diagnostic habit. If a stock on your watchlist turns up with a battleship float and a weak RS reading, that is a structural reason it might grind through decent news rather than gap on it, and a reason a swing setup on it may need more time and more confirmation before it resolves.
Everything the screen reports, float count, RS percentile, is captured at the close and stated plainly: a fact and a derived label, not advice. What the pairing tells you is how much demand a given move requires. Whether that changes how you treat a name on your watchlist, the trade is yours.
Open the terminal and run screen float>500m rs<40 against tonight's close, then run it again with the ceiling flipped to see the other half of the picture. The terminal is part of tickerstance Pro at $28 a month, grandfathered, so the price you join at is the price you keep.
Frequently asked questions
What does `screen float>500m rs<40` find?
It returns names with a float of 500 million shares or more that are also ranking below 40 on relative strength, the battleship-supply names posting weak recent performance. It is the deliberate inverse of the low-float leader screens the rest of this cluster runs, built to make the float mechanic visible by looking at its opposite.
Is a high float always a bad sign for a stock?
No. Float size by itself carries no quality judgment: drop the rs<40 filter and float>500m on its own returns plenty of the market's most durable, widely held leaders, some ranking in the 90s on leaders despite carrying floats in the hundreds of millions or billions of shares. What correlates with sluggish price action is the pairing of a big float with weak relative strength, rarely the float count on its own.
Why does a bigger float mean a stock needs more demand to move?
Price impact scales with dollars of buying spread across the shares available. The same wave of net buying that moves a 20 million-share float sharply barely dents a 500 million-share float, because that demand is diluted across a far larger pool of tradeable supply. It is arithmetic, not sentiment.
What is the difference between float and float percent (`fp`)?
Float is a share count, aliased flt; float percent (fp/floatpct) is that count divided by total shares outstanding (shares/so). A stock can carry 500 million shares outstanding and still have a low float percent if insiders or founders hold most of it, in which case its tradeable supply is tighter than the raw float number suggests.
How is this different from the low-float leader screens in this series?
Same command grammar, opposite thresholds. low-float-leaders runs leaders rs>90 float<40m to find thin-supply names with strong relative strength; this screen flips both sides, a floor of float>500m and a ceiling of rs<40, to find heavy-supply names with weak relative strength. Running the mechanic backwards is how you confirm it forwards.
Can `float>500m` be combined with other filters?
Yes. Space-separated predicates AND automatically, so screen float>500m rs<40 dollarvol>20m adds a liquidity floor, and screen float>500m rs>80, dropping the ceiling for a floor, shows the opposite lesson: enormous floats the market is still bidding for. Every field in the grammar composes the same way regardless of which screen you are running.