Dilution
Dilution is what happens to existing shareholders when a company issues new shares: each share becomes a smaller slice of the same company. Small caps dilute through offerings, at-the-market sales, warrant exercises and convertible notes, and the new supply can end a move in minutes.
Why it matters to a small-cap momentum trader
Most of the stocks on a low-float gainers list are small companies that spend more cash than they make. They pay for it by selling stock, and the best time to sell stock is when the price has just doubled on volume. The spike you are trading is often the company's chance to raise money, and the shares it sells land on the offer, right where you hoped to take profit.
That is why a low float is not a promise. A float of 5 million shares can become 9 million overnight, and a stock that ran on thin supply can turn heavy within minutes of a filing.
Where the new shares come from
- Offerings. The company sells a block of new shares, often at a discount, through an underwriter or a placement agent. See the offering page for the kinds.
- At-the-market (ATM) programs. The company sells shares into the market a little at a time, at whatever the price is, through a sales agent.
- Warrants. Holders pay the exercise price and receive new shares, usually when the stock trades above that price. See warrants.
- Convertible notes and preferred stock. Debt or preferred shares that turn into common stock, sometimes at a discount to the market price.
- Stock pay. Options and restricted shares for staff add shares slowly. They matter less to a day trader than the four above.
The rule that limits small companies: the baby shelf
Shelf registration. A company that files a Form S-3 and has it declared effective can sell registered shares off that shelf later, by filing a prospectus supplement under Rule 424(b), without a new registration each time.
The baby shelf limit. If the market value of the stock held by non-affiliates, its public float, is under 75 million dollars, the company can sell no more than one-third of that public float through its S-3 in any 12 months (Form S-3, General Instruction I.B.6).
Why traders watch it. A run that lifts the public float raises the amount the company is allowed to sell. A big move can open the door to a bigger raise.
A company that cannot use an S-3 at all registers shares on a Form S-1 instead, which takes longer. Neither form sells a single share by itself; they make a sale possible.
Dilution in Hindsight Markets
The float and the share count are read as of the moment you replay, from the filings the SEC had accepted by then, so an offering filed at 2:00 p.m. is not in the morning's float. The filings themselves arrive at the minute they were accepted, in their own window.
A worked example: what an offering does to a float
An illustration with round numbers, not a real stock or a real day.
Before. A company has 10 million shares outstanding and a float of 6 million. You hold 100,000 shares, which is 100,000 ÷ 10 million = 1% of the company.
The offering. After a run to 2.40 it sells 2.5 million new shares at 2.00, raising 2.5 million × 2.00 = 5 million dollars before fees.
After. Shares outstanding = 10 + 2.5 = 12.5 million. Your 100,000 shares are now 100,000 ÷ 12.5 million = 0.8% of the company. If every new share is free to trade, the float goes from 6 to 8.5 million, 2.5 ÷ 6 ≈ 42% more supply.
The price. Buyers in the offering paid 2.00. Some will sell as soon as they can at any profit, which is why a stock often drifts toward its offering price.
Common mistakes small-cap traders make with dilution
- Trusting a stale float. A company that sold stock last week has more shares out than its last annual report says. Check the recent filings, not only the number on the scanner.
- Ignoring an effective shelf. A company with an S-3 already effective can sell the same day it runs. The shelf is the warning; the sale is the event.
- Holding through the close on a spike. Many offerings are priced after the bell. A stock that ran all day can open well below the close.
- Reading every filing as bad. An 8-K can be a contract, a trial result or a deal. Read what it says before you sell it.
Common questions
- Is stock dilution good or bad?
- For the existing holder it shrinks their share of the company, so it is bad unless the cash is put to work well. For a day trader it is mostly a supply problem: new shares for sale near the high of a run.
- What is the difference between dilution and a stock split?
- A split changes the number of shares but not anyone's share of the company: a 2-for-1 doubles your shares and halves the price. Dilution adds new shares sold to other people, so your slice gets smaller.
- How can you tell if a company is about to dilute?
- Look for an effective S-3 shelf or an ATM program, a recent S-1, outstanding warrants priced below the stock, convertible notes, and a quarterly report that shows little cash. None of these says when, only that it can.
- Does dilution always make the price fall?
- Not always. A raise that ends a cash worry, or one bought by a strategic investor, can be taken well. On a small cap that just spiked, new supply at a discount usually weighs on the price.
- What is diluted EPS?
- Earnings per share counted as if every option, warrant and convertible that could become stock already had. It shows how much the earnings would shrink per share if all of them were exercised or converted.
How to practise it in Hindsight Markets
- Open a past trading day and run the Small Cap Low Float Top Gainers scan.
- Add the Shares out and News today columns beside the Float.
- Open the Filings window on a mover and read its Offerings tab: an S-1, an S-3 or a 424B that came before today, and anything that lands while you watch, marked new.
- In the chart settings, turn on SEC filings under Events. An F badge sits on the bar where each filing came out; hover it to read it.
- Trade it, then compare the time of your exit with the time of the filing.
Practice this on a real past day in Hindsight Markets
Open a real trading day, read the offering filings the market had seen by that minute, and trade the mover with simulated money.