Pattern Day Trader Rule: What Replaced It

The pattern day trader rule is gone. FINRA's amendments to Rule 4210 took effect on June 4, 2026, and they eliminate four things retail traders knew by heart: the pattern day trader designation, the count of four day trades in five business days, the $25,000 minimum equity requirement, and day trading buying power. What replaced it measures the margin an account uses during the day rather than counting round trips.

What replaced the pattern day trader rule

The Securities and Exchange Commission approved the amendments on April 14, 2026 (Release 34-105226, filing SR-FINRA-2025-017). FINRA set the effective date at June 4, 2026 in Regulatory Notice 26-10.

The replacement is the intraday margin level, or IML. A firm computes an intraday margin deficit when a customer enters transactions that reduce the account's intraday margin level. Firms may monitor that in real time, and an end of day calculation is also permitted.

A deficit must be satisfied promptly and may not remain outstanding for more than 15 business days. A de minimis carve out keeps small amounts out of scope entirely: a deficit below the lesser of 5% of the account's equity or $1,000 requires nothing. Ordinary margin minimums continue to apply on top, including the general $2,000 minimum equity for a margin account.

One penalty remains, and it attaches to unmet obligations. A customer who makes a practice of failing to satisfy intraday margin deficits, and who passes the five business day mark, receives a 90 calendar day restriction on establishing new short positions and on increasing debits.

Before any of this shows up on your screen, one caveat. Firms may phase in the amendments through October 20, 2027. A broker that has not finished implementation may still run legacy pattern day trader logic on your account today, flag included. Your firm's margin disclosure states its current treatment.

What the old pattern day trader rule did

Under the old text, an account was designated a pattern day trader once it executed four or more day trades within five business days, provided those day trades made up more than 6% of the account's total trades over the same period. A day trade meant buying and selling the same security inside one session.

The designation carried a hard number: $25,000 in equity, required before day trading and maintained afterward. Below that line, the account was restricted to closing transactions for up to 90 calendar days, or until the equity was restored. Above it, the account received day trading buying power of up to four times maintenance margin excess.

That structure worked by proxy. It counted a behavior and inferred the exposure. The IML framework measures the exposure directly.

Trades that were blocked before and are allowed now

A $5,000 margin account takes a fourth day trade in a week. Old outcome: the fourth round trip inside five business days produced the designation. With equity under $25,000, the firm issued a day trading equity call, and the account was restricted to closing transactions until the call was met, for up to 90 calendar days. New outcome: nothing counts the trade. The fourth round trip is handled like the first. Ordinary margin governs, meaning the $2,000 general minimum plus whatever intraday margin deficit the day's transactions create. On $5,000 of equity the de minimis threshold is $250, being 5% of equity and lower than $1,000.

An account that day trades most weeks and never holds $25,000. Old outcome: it stayed flagged and cycled through restrictions, or the trader moved to a cash account and traded settled funds only. New outcome: frequency is invisible to the rule. There is no count, no flag, and no equity threshold tied to day trading. Each session either creates an intraday margin deficit or it does not.

A deficit that goes unmet. Suppose that same account runs a $600 intraday margin deficit, above its $250 threshold. It must be satisfied promptly, and it may not remain outstanding more than 15 business days. A trader who repeatedly leaves deficits unmet past the five business day mark meets the definition of making a practice of failing to satisfy them, and the firm applies the 90 calendar day restriction. The penalty survived the rewrite. The condition that invokes it moved from a trade counter to an unpaid obligation.

How many sessions a five business day window holds

The old count ran on business days, and the number of sessions inside them moves with the holiday calendar. Monthly session counts on file since January 2025:

WITH trading_days AS (
    SELECT DISTINCT toDate(toTimeZone(window_start, 'America/New_York')) AS session_date
    FROM global_markets.delayed_stocks_minute_aggs
    WHERE ticker = 'SPY'
      AND window_start >= toDateTime('2025-01-01 05:00:00')
      AND window_start < toDateTime('2026-07-01 04:00:00')
)
SELECT formatDateTime(toStartOfMonth(session_date), '%Y-%m') AS month,
       formatDateTimeInJodaSyntax(toStartOfMonth(session_date), 'MMMM yyyy') AS month_label,
       count() AS sessions
FROM trading_days
GROUP BY month, month_label
ORDER BY month

Across the 18 months charted, from January 2025 to June 2026, the counts sit in a narrow band: 20 sessions in the first month and 21 in the last. The dips are the months carrying market holidays, and a holiday week gave the old counter four business days to work with instead of five. Market holidays and early closes lists the calendar, and stock market hours covers the daily open and close.

Where the trading inside a session sits

A day trade opens and closes inside one session. Volume across that session is not spread evenly. Half hour buckets of SPY volume across the week of July 6, 2026, in Eastern time:

SELECT formatDateTime(toStartOfInterval(toTimeZone(window_start, 'America/New_York'), INTERVAL 30 MINUTE), '%H:%i') AS et_time,
       round(toFloat64(sum(volume)) / 1e6, 1) AS shares_millions
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'SPY'
  AND window_start >= toDateTime('2026-07-06 08:00:00')
  AND window_start < toDateTime('2026-07-11 00:00:00')
GROUP BY et_time
ORDER BY et_time

The half hour beginning 09:30 ET carried 21.2 million shares over that week, and the half hour beginning 15:30 carried 37.8 million. The half hour starting 04:00, deep in the premarket, carried 0.5 million. After hours and premarket trading covers the sessions at the edges, and why spreads widen at the open covers the quoting side of the same curve.

How far a single session travels

The other half of the mechanics is range. High to low across the whole trading day, premarket through after hours, measured against the day's first price, for eight familiar names over the first half of 2026:

WITH daily AS (
    SELECT ticker,
           toDate(toTimeZone(window_start, 'America/New_York')) AS session_date,
           toFloat64(max(high)) AS day_high,
           toFloat64(min(low)) AS day_low,
           toFloat64(argMin(open, window_start)) AS day_open
    FROM global_markets.delayed_stocks_minute_aggs
    WHERE ticker IN ('SPY', 'QQQ', 'AAPL', 'MSFT', 'NVDA', 'TSLA', 'KO', 'JNJ')
      AND window_start >= toDateTime('2026-01-01 05:00:00')
      AND window_start < toDateTime('2026-07-01 04:00:00')
    GROUP BY ticker, session_date
)
SELECT ticker,
       round(quantileDeterministic(0.5)(100 * (day_high - day_low) / day_open, cityHash64(session_date)), 2) AS median_range_pct,
       round(quantileDeterministic(0.9)(100 * (day_high - day_low) / day_open, cityHash64(session_date)), 2) AS p90_range_pct
FROM daily
WHERE day_open > 0
GROUP BY ticker
ORDER BY median_range_pct DESC

TSLA posted the widest median at 3.93% of the day's first price, and SPY the narrowest at 1.18%. The 90th percentile column carries the tail: 6% on the widest name against 2.31% on the narrowest. These are descriptions of past sessions, not forecasts, and the rule change does not touch them.

What did not change

• Cash accounts and settlement. A cash account still trades settled funds, and US stocks still settle on T+1.
• Regulation T initial margin and the maintenance margin floor. Both sit outside these amendments.
• The general $2,000 minimum equity for a margin account.
• House rules. A firm may set requirements stricter than the regulatory floor, and many do.
• Order handling. Market order vs limit order still describes how a fill is priced, and paper trading before real money still describes where the mechanics get rehearsed.

Pattern day trader rule FAQ

Is the $25,000 day trading minimum gone?

Yes. The $25,000 minimum equity requirement for pattern day traders was eliminated on June 4, 2026 along with the designation itself. The general $2,000 minimum equity for a margin account still applies, and a broker still phasing in the amendments may enforce the old requirement until October 20, 2027.

What is an intraday margin level?

It is the margin level a firm computes for an account during the trading day. When a customer enters transactions that reduce it, the firm calculates an intraday margin deficit against it. Real time monitoring is optional for the firm, and an end of day calculation is permitted.

How long can an intraday margin deficit stay open?

It must be satisfied promptly and may not remain outstanding more than 15 business days. A deficit below the lesser of 5% of account equity or $1,000 falls under the de minimis carve out and requires nothing.

Can I day trade in a cash account now?

Cash account rules were not part of these amendments. A cash account trades settled funds, and US stocks settle on T+1, which is the binding constraint there rather than any day trade count.

Does my broker have to follow the new rule already?

The amendments took effect on June 4, 2026, and firms may phase in implementation through October 20, 2027. An account may still carry a pattern day trader flag at a firm that has not finished. The firm's margin disclosure states the treatment that applies today.

Every panel above is a stored query with its SQL attached. Open any of them, or run your own on the Strasmore terminal.