What Was a Pattern Day Trader, and Does the Rule Still Apply?

Under FINRA Rule 4210 as it read before June 4, 2026, a pattern day trader was any customer who made four or more day trades within five business days in a margin account, provided those day trades were more than six percent of the customer’s total trades in the account over the same five days. Once flagged, the account needed 25,000 dollars of equity to keep day trading.

FINRA has since replaced the whole arrangement. Your broker may not have caught up yet.

A day trade meant opening and closing the same position in the same security on the same trading day. Buy in the morning, sell in the afternoon: one. Short at the open and cover before the close: also one. An overnight hold never counted, because selling it the next morning closed a position opened on a different day.

What the flag used to mean

A flagged account needed a minimum of 25,000 dollars in equity for every session in which it day traded, and the money had to be there before the session’s first trade, so a trader who started the day short of the line couldn’t rely on that day’s gains to lift the balance over it. Below the line, new day trades were blocked. Buying and holding still worked.

The flag usually came with larger intraday limits, the kind described under buying power.

Brokers could also go further than FINRA. Some flagged accounts on their own judgment and kept the label long after the activity stopped.

An account under 25,000 dollars wasn’t shut out. It could make three day trades in any rolling five-day window. The fourth set the flag.

How the old count rolled

The window was always the current business day plus the four before it. A trade dropped out on the fifth business day after it was made, with weekends and market holidays skipped.

The six percent test only bit for very busy accounts. Someone placing hundreds of trades a week could make four day trades and stay under the ratio. For nearly everyone else, four in five days did it.

Scaled entries were messier. Buying in three pieces and selling all at once could be one day trade at one broker and a different number at another, which is still worth asking about if your firm runs the count. The day trade counter walks the same rolling window over a list of dates.

What replaced it on June 4, 2026

Approval from the SEC arrived on April 14, 2026, under Release No. 34-105226. FINRA’s Regulatory Notice 26-10 followed on April 20, 2026, and it scrapped the old day trading margin requirements whole. The day trade count went. So did the 25,000 dollar minimum.

In their place sit intraday margin requirements. On a day when a margin account makes trades that reduce its margin level, the firm works out an intraday margin deficit, meaning the shortfall between the maintenance margin required and the account’s equity, and FINRA expects the account to cover it as promptly as possible; an account that keeps failing to meet deficits promptly can be restricted for 90 days.

FINRA’s 25% maintenance minimum on long margin-eligible stock now applies throughout the day. Firms can set it higher. The 2,000 dollar minimum equity for margin is unchanged.

Why your broker may still count

Firms got a transition. Any firm can take until October 20, 2027 to move over, and before it does it may keep applying the old day trading rules, flag and 25,000 dollar minimum included, or it may switch ahead of that date, so a pattern day trader label can still block trades at one broker while another has stopped counting altogether.

The timing question gets its own page: is the pattern day trader rule still in effect.

Finding out which rule you’re under

Ask the firm. One message settles it: which day trading rules apply to the account today, and when it plans to switch.

The platform gives clues too. A visible day trade tally near the balances, or a pattern day trader label on the account, suggests the old count is still live. So does a margin disclosure that still describes a flag after four day trades. Plan around the old rule until the firm confirms otherwise.

Cash accounts

Cash accounts were never under the rule. Nothing changed for them on June 4.

A cash account can day trade as often as its settled cash allows. Buying with proceeds that haven’t settled and then selling before they do runs into good faith violations, and the rest of the settlement detail is in day trading in a cash account.