FINRA has approved amendments to Rule 4210 that replace the existing Pattern Day Trader (PDT) provisions with a new intraday margin framework. This change shifts the focus from rigid limits on trade counts and minimum equity to dynamic, real-time risk management based on actual intraday trading exposure.
The SEC has approved the proposed rule change, and FINRA has announced the effective date of June 4, 2026 via Regulatory Notice. Alpaca will implement these changes for both Trading API users and Broker API partners on the effective date.
Upcoming PDT Changes for Trading API Users
What is Being Removed
The following restrictions tied to the former PDT rule will be removed from our platform on June 4, 2026:
- The Pattern Day Trader designation and all PDT-based account restrictions.
- The $25,000 minimum equity requirement for pattern day traders.
- Day trade counting and buying power logic.
- Any accounts currently restricted due to PDT violations will be unrestricted when the new framework goes live.
- Trading API users previously ineligible for the FDIC Sweep Program due to PDT status will be able to enroll in Alpaca’s High-Yield Cash program.
What Is Replacing It
FINRA is replacing the PDT provisions with an intraday margin framework. Under the new rules:
- Intraday Buying Power replaces Day Trade Buying Power. This is a running calculation of your available margin for intraday positions, updated throughout the trading day based on your equity, positions, and intraday profit and loss.
- Intraday Margin Calls replace Day Trade Margin Calls. If your positions exceed your available intraday margin, you will receive a margin call. If you repeatedly fail to meet intraday margin calls within five business days, your account may be restricted for up to 90 calendar days.
- Pre-Trade Checks will reject orders that would put your account into a margin deficit, helping prevent overextension in real time.
- Increased Buying Power Availability: For leverage-enabled accounts, the minimum equity requirement for 4x intraday buying power has been lowered from $25,000 to $2,000.
Actions Required
The primary impact is the removal and replacement of margin-related fields.
- If you use the API directly: Audit your integration for references to
pattern_day_trader,daytrade_count, ordaytrading_buying_powerfields. Plan to replace these withbuying_powerby June 4, 2026, as the previous fields will be completely removed from the API by July 6, 2026. - If you trade through the Alpaca Dashboard: No action is required. The changes will take effect automatically on your account on the effective date.
For more information, please read the following resources:
- Understanding FINRA’s New Intraday Margin Rule and the End of PDT
- FAQ: Intraday Margin Rule for Non-Leverage Margin Accounts
- FAQ: The Intraday Margin Rule
We will provide the following information on the go-live date:
- Updated API documentation
For Trading API users that have any questions or require further clarification, please reach out to our support team at [email protected].
Upcoming PDT Changes for Broker API Partners
What is Being Removed
The following restrictions tied to the former PDT rule will be removed from our platform on June 4, 2026:
- The Pattern Day Trader designation and all PDT-based account restrictions.
- The $25,000 minimum equity requirement for pattern day traders.
- Day trade counting and buying power logic.
These fields will return the following values until their complete removal from the API:
pattern_day_trader=falsedaytrade_count= 0daytrading_buying_power=buying_power
If your application reads, displays, or makes decisions based on any of these fields, your integration will need to be updated.
Additionally, accounts currently restricted due to PDT violations will be unrestricted when Alpaca implements the new framework.
What Is Replacing It
FINRA's new intraday margin framework applies existing maintenance margin requirements to intraday trading exposure. Here is what this means in practice on Alpaca:
- Intraday Buying Power replaces DTBP. This is a running balance that reflects your customers' available margin for intraday positions, updated throughout the trading day.
- Intraday Margin Deficit (IMD) Calls replace Day Trade Margin Calls. If a customer's intraday positions exceed their available margin, the system will issue an intraday margin call. If the deficit is not resolved within five business days and the customer makes a practice of failing to meet these calls, the account may be restricted for up to 90 calendar days.
- Real-time Pre-Trade Checks will reject orders that would create or increase an intraday margin deficit, preventing overextension before it occurs.
- FDIC Sweep Program limitations tied to PDT designations. Customers previously deemed ineligible due to PDT status will be able to enroll in your High-Yield Cash program.
- Intraday P&L will be factored into margin availability, providing real-time buying power throughout the trading day.
- Increased Buying Power Availability: For leverage-enabled accounts, the minimum equity requirement for 4x intraday buying power has been lowered from $25,000 to $2,000.
Actions Required
- Audit your integration for references to
pattern_day_trader,daytrade_count, ordaytrading_buying_powerfields. Plan to replace these withbuying_powerby June 4, 2026, as the previous fields will be completely removed from the API by July 6, 2026 - Review your UI to ensure you do not surface PDT status, day trade counts, or DTBP to end users. These will need to be updated or removed.
- Update any business logic that relies on PDT classification for order routing, risk checks, or account restrictions.
- Review how your platform handles margin calls - the new intraday margin call process works differently from DTMC. Calls are based on intraday margin deficits, not pattern day trading status.
- Test against our sandbox at the same time as the production change goes live (June 4, 2026).
For Broker API partners that have any questions or require further clarification, please reach out to your Customer Success Manager or our support team at [email protected].
Timeline
FINRA's Regulatory Notice sets the effective date at June 4, 2026. Alpaca will implement the changes on that date.
For more information, please read the following resources:
- Understanding FINRA’s New Intraday Margin Rule and the End of PDT
- FAQ: Intraday Margin Rule for Non-Leverage Margin Accounts
- FAQ: The Intraday Margin Rule
We will provide the following information on the go-live date:
- Updated API documentation
Margin trading involves significant risk and is not suitable for all investors. Before considering a margin loan, it is crucial that you carefully consider how borrowing fits with your investment objectives and risk tolerance.
When trading on margin, you assume higher market risk, and potential losses can exceed the collateral value in your account. Alpaca may sell any securities in your account, without prior notice, to satisfy a margin call. Alpaca may also change its “house” maintenance margin requirements at any time without advance written notice. You are not entitled to an extension of time on a margin call. Please review the Firm’s Margin Disclosure Statement before investing.
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