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Column · Argument · Stock Trading

Skip an IPO's First Day and Let the Chart Form First

Buying an IPO on its first day means trading a stock with no support, no resistance and no normal range to put a stop against. Wait for the chart to form a base, then trade it like any other stock.

AI-assisted, reviewed by the The Margin Report human editor: John Todora → 4 min read Published

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The call

Skip the first day of an IPO and wait for a base or the first quarterly report, so the stop has a price history to sit against.

Stop distance
$6
Shares for $300 of risk
50
Shares on a $1.50 stop
200

Somewhere in every prospectus is a section on shares eligible for future sale, and inside it a lockup: the company’s officers, directors and early holders have agreed with the underwriters not to sell for a stated period after the offering. It is a short paragraph. Read it before you buy on day one. Many of the shares that exist can’t be sold yet, and the people who own them will be free to sell later, on a date already printed in the filing.

That is the supply side of a first day. The chart side is worse.

A stock with no chart

An established stock arrives with history. Buyers stepped in at some prices, sellers took over at others, and the daily range can be measured. A stop goes past that noise, at the level that would prove the idea wrong, and the distance to it tells you how many shares to buy.

A new listing has none of that. It has no prior low and no base. The only reference points are the offer price and whatever the first few hours of trading happen to produce, which is to say the stop gets set against some of the most volatile hours the stock will ever have.

Even the offer price is a weak anchor. In the example below the stock opens at $30 against a $24 offer, ($30 - $24) / $24 = 25% above it before a single public trade has printed, which tells you the open came from a crowd of orders meeting a limited supply of shares and says very little about where buyers will defend the stock next week.

What the first day does to position size

Take a hypothetical IPO priced at $24. It opens at $30 and swings between $27 and $36 before the close. You buy at $33. The stop goes under the day’s low, the only level the chart offers.

Fifty shares against two hundred, on the same dollar risk. The IPO trade is a quarter of the size, and that’s the honest version. The dishonest version keeps the share count a trader wanted and tightens the stop to make the risk look like $300, at which point the stop sits inside a range the stock crossed several times before lunch and will almost certainly be hit by noise. Neither is a good trade. The position size calculator will show you the same thing for any first-day range you plug in.

The float and the lockup

The public float is the set of shares that trade on day one. It is often a small slice of the shares outstanding. A thin float moves hard on modest demand, in both directions, and the price that results says more about the imbalance of the first few hours than about the business.

The rest of the shares are held back by the lockup. A lockup period is set in the underwriting agreement and disclosed in the prospectus. When it ends, a large block of stock becomes free to sell, and anyone holding the shares has to reckon with that date whether or not the business has changed.

Non-marginable means no borrowed money. The shares are paid for in full and add nothing to buying power. The answer on why a stock isn’t marginable explains how brokers make that call.

The alternative: wait for a base or a report

One reasonable point to step in is the first base: a stretch of days or weeks in which the stock stops making wild swings and settles into a range, giving you a low to put a stop under and a high to watch for a breakout. Another is the first quarterly report as a public company, which gives you actual numbers to compare against the story in the prospectus; the lesson on reading an earnings release shows where to find them. Either way, you get a defined stop. The trade can then be sized like any other.

The course on filtering weak setups and when to sit out treats a trade that can’t be sized properly as one to pass on until it can.

The objection: some IPOs never look back

The strongest argument against waiting is that some IPOs never trade near their first-day price again. They open high and keep going. The trader who waited watches from the side.

That happens. A missed trade costs no capital, though, and the one you avoided might just as easily have been the listing that opened at $30, ran to $36 and spent the next quarter below $24. Nobody knows on the first morning which kind it is. The wait trades an unknown chance at a big gain for a trade you can size, stop and explain, and a stock that keeps rising will usually form a base somewhere along the way that lets you in at a defined risk.

Skip the first day, and let the stock show you where the stop goes

The call holds for anyone trading from a stop and a fixed risk budget. It holds with extra force around the lockup date. Supply changes then. It stops holding for an investor who has decided to own the company for years and will accept a large drawdown without a stop; that is a different decision, made on different terms. For a trader, day one tends to demand the widest stop the stock will need. Let someone else pay for it.

Readers also ask

Why is an IPO priced differently from where it opens?

The offer price is set by the company and its underwriters before trading starts, and shares are sold at that price to the buyers allocated in the offering. The opening price is whatever the first public trades settle on once orders from everyone else meet the limited supply of shares available.

When does the IPO lockup period end?

Insiders agree the lockup terms with the underwriters before the offering, and the prospectus spells them out, so the date sits in each company's filing. Until it passes, insiders and early holders are restricted from selling. Read the lockup section of the prospectus for the exact terms and any early-release conditions.

Can you buy a new IPO on margin?

Often not at first. Many brokers treat a newly listed stock as non-marginable for a period, so it has to be paid for in full and does not count toward buying power. The rules vary by broker, and the stock's detail page or the broker's margin list shows its status.