What functions does the Alternative Display Facility not provide to its participants?

Quotation collection, quotation dissemination, and the comparison of reported trades

Automated order routing, execution facilities, and linkages between the trading centres using it

Trade reporting outside normal market hours, and the modifiers that designate such trades

Access to quotations displayed on national securities exchanges and other off-exchange venues

What access must a trading centre using the Alternative Display Facility provide, and to whom?

Indirect access through a sponsoring member, to any FINRA member that asks and meets the sponsor's terms

Direct electronic access to every other trading centre using the facility, but to no FINRA member that is not one

Direct electronic access to every other trading centre using the facility, and to any FINRA member that asks for it

Direct electronic access to any national securities exchange displaying a protected quotation in the security

What is the Alternative Display Facility's current operating reality, as against the function it was built for?

It has no active quoting participants, so it now serves mainly as a transaction reporting facility

It has no active reporting participants, so it now serves mainly as a quotation display venue

It has been superseded by the trade reporting facilities and accepts neither quotations nor reports

It operates as designed, with quotation display and transaction reporting both in regular use

What prompted the creation of the Alternative Display Facility?

The adoption of Regulation NMS, which required every self-regulatory organisation to operate its own quotation facility

Nasdaq's departure to become an independent exchange, which left members who would not join it without a FINRA-run venue

The consolidation of the NASD and NYSE regulatory functions, which required a neutral facility standing outside either of the two markets

The growth of electronic communication networks, which had no means of reporting their transactions to any facility

How do the Alternative Display Facility's operating hours compare with those of the trade reporting facilities?

It opens and closes at the same times as they do, the difference lying in the securities each accepts

It closes at 8:00 p.m. Eastern Time where they close at 6:30 p.m., a difference of ninety minutes

It closes at 6:30 p.m. Eastern Time where they run to 8:00 p.m., a difference of ninety minutes

It closes at 4:00 p.m. Eastern Time where they run to 8:00 p.m., a difference of four hours

A member executes an off-exchange transaction in an NMS stock at a quarter past seven in the evening. What are its reporting options?

Real time to the Alternative Display Facility only, every one of the trade reporting facilities having shut for the evening at half past six

Real time to either, since both remain open for trade reporting after their quotation sessions have ended

Next business day to either, since neither accepts a real-time report of a transaction executed that late

Real time to a trade reporting facility, but only next business day and on an as-of basis to the Alternative Display Facility

What are the mandatory business hours for a trading centre using the Alternative Display Facility?

Open by 9:30 a.m. and closing no earlier than 4:00 p.m. Eastern Time, with the surrounding periods voluntary

Open by 8:00 a.m. and closing no earlier than 6:30 p.m. Eastern Time, matching the facility's own session

Open by 9:30 a.m. and closing no earlier than 6:30 p.m. Eastern Time, with the morning period voluntary

Whatever hours the trading centre publishes in advance, provided they fall within the facility's session

The reporting standard reads 'as soon as practicable but no later than ten seconds after execution'. What does the as-soon-as-practicable requirement add to the ten-second deadline?

A member may exceed ten seconds where its systems cannot reasonably achieve that speed on the trade

A member may not hold a report until the last permissible second — systems must be built to report promptly

A member must report within a shorter period for electronically executed trades than for manual ones

A member must report before the counterparty to the trade does, whichever of the two of them is technically able to do so first

A transaction is executed at ten past five in the evening, inside the facility's session but outside normal market hours. How must it be reported?

Within ten seconds, with no modifier, the modifier being reserved for trades executed after the session closes

By the end of the facility's session, carrying the modifier that designates execution outside normal market hours

Within ten seconds, carrying the modifier that designates execution outside normal market hours

On the next business day on an as-of basis, since normal market hours have already ended for that day

How does the deadline for reporting a cancellation depend on when the cancellation is made?

Within ten seconds if made by 4:00 p.m., and at any point during the following session if made after that

Within ten seconds whenever it is made, the original trade's execution time being irrelevant to it

Before the session ends whenever it is made, cancellations never carrying the ten-second obligation

Within ten seconds if made by 4:00 p.m., but only before the session ends if made after that

What granularity must a firm use for the time fields in its trade reports to the Alternative Display Facility?

The same granularity it uses when reporting to the Consolidated Audit Trail, however fine that is

Milliseconds, whatever finer granularity its own systems may be capable of capturing

Whichever granularity the facility specifies, independently of what the firm reports elsewhere

Whole seconds, since sub-second precision is required only for the reports a firm submits to the Consolidated Audit Trail

One of the sub-series' child rules restricts what a participant may display. What does it prohibit?

Quotations in a security for which the participant is not a registered market maker

Quotations that lock or cross a protected quotation displayed on another trading venue

Quotations in an increment finer than the minimum applying to the security's price band

Quotations displayed simultaneously on another venue at a different price or size

How does a registered reporting market maker in the facility differ from a registered reporting electronic communication network?

The market maker must register in every eligible security; the network may choose the securities it displays

The market maker displays orders it has received from its own customers; the network displays quotations for its own account and at its own risk

The market maker reports its transactions to the facility; the network reports through a clearing participant instead

Records generated by participation in the facility must be preserved for a minimum period. How is that period structured?

Six years in total, with the first two of them kept somewhere easily accessible

Three years in total, all of which may be held in archival storage requiring special retrieval

Two years in total, with the first of them kept somewhere easily accessible

Three years in total, with the first two of them kept somewhere easily accessible

A member's ADF last sale reports are sometimes transmitted more than ten seconds after execution. When does its late reporting amount to a violation of FINRA Rule 2010?

When it forms a pattern or practice of late reports without exceptional circumstances

As soon as any single report is transmitted after ten seconds, whatever the reason

Only when a late report is shown to have been withheld to gain a trading advantage

Only once late reports exceed a fixed share of its reported trades in a calendar month

A member and its counterparty agree to cancel a trade that the member had reported through the Alternative Display Facility. Where must the cancellation be reported?

To whichever trade reporting facility is still open at the time of cancellation

To FINRA Market Regulation by written notice, outside any reporting facility

To the Consolidated Audit Trail, which then relays it to the original facility

A trade reported through the Alternative Display Facility is later cancelled under the clearly erroneous transaction rules of the FINRA Rule 11890 Series. How does the ADF cancellation reporting requirement apply to it?

It applies, but the cancellation is reported the next business day as/of

It applies in full, and the cancellation must be reported within ten seconds

It does not apply, trades cancelled under that Series being expressly excepted

It applies, but only where the cancellation is made after 4:00 p.m. Eastern

In what time convention must execution time be expressed in a trade report submitted to the Alternative Display Facility?

Eastern Time, in twelve-hour format marked a.m. or p.m.

Coordinated Universal Time, written in twenty-four-hour format

The member's own local time zone, in twenty-four-hour format

Eastern Time, written in military (twenty-four-hour) format

Before Nasdaq became an independent exchange, how was its quotation system operated?

Directly by NASD, with Nasdaq running as a dealer market under its auspices

By an independent exchange operator working under a contract with NASD

By the SEC's own market systems office, with NASD acting as its agent

Jointly by the regional stock exchanges under a shared national plan

Beyond giving non-exchange members somewhere to quote and report, what wider market-structure outcome did establishing the ADF secure?

Nasdaq-listed stocks could from then on be traded only through FINRA-operated systems

NMS stock quotation display and trade reporting were not left wholly to exchanges

Exchanges were barred from operating quotation display and trade reporting facilities of their own

Market makers had to route all their NMS stock orders through a FINRA-run facility

When FINRA assesses whether an ADF last sale report sent after the ten-second deadline was justified, what does it take into account?

Whether the counterparty to the trade had already reported its own side of it

The member's overall trading volume in that security across the whole trading day

The trade's complexity and how far it had to be handled manually

Whether the trade was executed at a price away from the then prevailing quote

A member executes an off-exchange trade in an ADF-eligible security at 8:45 a.m. Eastern Time. How must it report the trade to the ADF?

Within ten seconds of execution, carrying the .T modifier

Within ten seconds, with no modifier, the facility being open

By 9:30 a.m. that day, when normal market hours begin

Next business day by 8:15 a.m., on an as/of basis

For ADF reporting, which execution times fall outside normal market hours but still inside the facility's operating hours?

8:00 to 9:30 a.m. and 4:00 to 8:00 p.m. Eastern

8:00 to 9:30 a.m. and 4:00 to 6:30 p.m. Eastern

6:30 to 9:30 a.m. and 4:00 to 6:30 p.m. Eastern

4:00 to 6:30 p.m. Eastern only, with no morning band

A trade executed at 9:00 p.m. Eastern Time is reported to the ADF at 8:40 a.m. on the next business day. How is that report treated?

It is timely, as/of reports being accepted at any point that business day

It is timely, next-day reports being accepted until 9:30 a.m. opens trading

It is designated late, the as/of report having been due by 8:15 a.m.

It is rejected, after-close trades having to go to a trade reporting facility

A trade executed at 2:00 p.m. Eastern Time is cancelled at 5:00 p.m. the same day. By when must the cancellation be reported to the ADF?

By 8:00 p.m. that day, when the reporting facilities close

Within ten seconds of the cancellation being made at 5:00 p.m.

By 8:15 a.m. on the next business day, on an as/of basis

Before the facility's session ends at 6:30 p.m. Eastern that day

A firm's systems capture execution time to the microsecond, and it reports to the Consolidated Audit Trail in microseconds. In what granularity must its ADF trade reports carry time fields?

Microseconds, matching the granularity it uses for its CAT reporting

Milliseconds, being the finest increment the facility will accept

Whole seconds, with the sub-second detail going only to the CAT

Nanoseconds, being the finest increment the CAT itself can hold

Under the definitions rule of the ADF sub-series, what does the term Registered Reporting Member cover?

Registered reporting market makers only, ECNs being defined separately

Both registered reporting market makers and registered reporting ECNs

Any FINRA member that reports a trade to the ADF, registered or not

Registered reporting ECNs only, market makers having their own term

An ADF participant holds trade reports it submitted to the facility two and a half years ago. What does the retention framework require of those reports?

They must be kept easily accessible until the full three years have run

They may now be destroyed, the retention period having ended at two years

They must still be preserved, but need not be kept easily accessible

They must be transferred to FINRA's custody for the remainder of the period

Which records generated by participation in the ADF fall within the SEC Rule 17a-4 retention framework described for participants?

Direct access records alone, the remaining data being FINRA's to retain

Trade reports alone, the facility itself retaining all quotation data

Quotation logs alone, trade reports being retained by the facility itself

Quotation logs, direct access compliance records and trade reports alike

FINRA Rule 6200: The Alternative Display Facility (ADF) Explained

Alternative Display Facility

FINRA Rule 6200 is the sub-series marker for the Alternative Display Facility (ADF) subsection of the FINRA Rule 6000 series — the organizational designation grouping all rules governing the operation, participation requirements, quotation display, transaction reporting, session hours, and recordkeeping obligations applicable to FINRA's own quotation display and trade comparison facility for NMS stocks traded otherwise than on a national securities exchange.

FINRA Rule 6200 has no operative text of its own. Its FINRA.org page returns only the title — 6200. ALTERNATIVE DISPLAY FACILITY — with no rule text, no amendment history, and no selected notices. It serves exclusively as the organizational container for its child rules, each of which addresses a specific dimension of ADF participation.

FINRA Rule 6200 sits within the 6000 Quotation, Order, and Transaction Reporting Facilities series, immediately following FINRA Rule 6191 — the final substantive rule of the FINRA Rule 6100 NMS Stocks sub-series — and immediately preceding FINRA Rule 6210, the first substantive child rule of the ADF sub-series.

What the ADF Is

The Alternative Display Facility is a facility operated by FINRA for members that choose to quote or effect trades in ADF-eligible securities otherwise than on an exchange. As FINRA Rule 6210's operative text directly states — the operative text that describes the ADF itself within the sub-series — the ADF collects and disseminates quotations and trade reports, and compares trades. FINRA members using ADF systems for quotation or trade reporting activities must comply with the Rule 6200 and 7100 Series, as well as all other applicable FINRA rules and the federal securities laws.

The ADF is a display-only facility — it does not provide automated order routing functionality, execution facilities, or linkages between ADF trading centers. ADF trading centers are required by FINRA rule to provide direct electronic access to all other ADF trading centers and to provide such access to all FINRA members that request it, reflecting the Access Rule's equal-access requirements under SEC Regulation NMS. All FINRA members in good standing are eligible to participate in the ADF, pending execution of appropriate contracts and meeting specific requirements as set forth by FINRA. As of the current period, there are no active quoting ADF participants — confirmed on FINRA's ADF information page — meaning the ADF currently operates primarily as a transaction reporting facility rather than as an active quotation display venue.

The ADF's Origins and Purpose

The ADF was established by FINRA (then NASD) in the early 2000s in connection with Nasdaq's transition from an NASD-operated market to an independent national securities exchange registered with the SEC. Prior to this transition, Nasdaq operated as a dealer market under NASD's auspices — NASD operated the quotation system directly. When Nasdaq received SEC approval to operate as an independent exchange, FINRA needed an alternative facility through which market makers and ECNs that chose not to register as exchange participants could continue to display quotations in Nasdaq-listed and other NMS stocks and report their transactions.

The ADF was designed specifically to serve this function — providing a FINRA-operated alternative to exchange quotation and reporting facilities available to any FINRA member choosing to display quotations or report transactions without going through an exchange. The ADF's establishment preserved a FINRA-operated alternative in the market infrastructure, preventing a situation where all NMS stock quotation display and transaction reporting was controlled exclusively by independent exchange operators.

ADF Operating Hours — The Critical 6:30 p.m. ET Session End

One of the most directly exam-tested facts about the ADF is its operating hours, which differ from those of the Trade Reporting Facilities. The ADF operating hours are 8:00 a.m. to 6:30 p.m. Eastern Time for both quotation display and trade reporting. By contrast, the TRFs operate from 4:00 a.m. to 8:00 p.m. Eastern Time each business day. This 90-minute differential between the ADF's 6:30 p.m. ET session end and the TRFs' 8:00 p.m. ET session end is a directly testable distinction on the Series 24 and Series 57.

The practical consequence of this difference: a member that executes an off-exchange NMS stock transaction at, say, 7:15 p.m. ET can report that transaction in real time to a TRF (since the TRFs remain open until 8:00 p.m.), but cannot report it to the ADF in real time — any such transaction must instead be submitted to the ADF on a next-business-day as/of basis by 8:15 a.m. ET.

FINRA Rule 6273 — the Normal Business Hours rule within the 6270 sub-series — establishes that ADF trading centers must be open for business as of 9:30 a.m. Eastern Time and must close no earlier than 4:00 p.m. Eastern Time, with voluntary extended-hours quotation activity permitted between 8:00 a.m. and 9:30 a.m. ET and between 4:00 p.m. and 6:30 p.m. ET. ADF trading centers whose quotes are open during these voluntary extended-hours periods must comply with all FINRA rules applicable to those periods.

FINRA Rule 6282: Transaction Reporting Through the ADF — Timing, Modifiers, and Obligations

FINRA Rule 6282 — Transactions Reported by Members to the ADF — is the operative transaction reporting rule within the FINRA Rule 6280 sub-series and is the most directly exam-relevant operative rule within the entire FINRA Rule 6200 sub-series. Three aspects of FINRA Rule 6282 are particularly significant.

The 10-second reporting requirement during normal market hours.

Members shall, as soon as practicable but no later than 10 seconds after execution, transmit to the ADF last sale reports of transactions in ADF-eligible securities executed between 9:30 a.m. and 4:00 p.m. Eastern Time otherwise than on an exchange. Transactions not reported within 10 seconds after execution shall be designated as late. A pattern or practice of late reporting without reasonable justification or exceptional circumstances may be considered conduct inconsistent with high standards of commercial honor and just and equitable principles of trade in violation of FINRA Rule 2010. The as soon as practicable standard means members may not deliberately hold reports until the final permissible second — systems must be designed to report promptly, and FINRA will consider the complexity and manual nature of a trade when assessing whether late reporting was justified.

The outside-normal-hours framework and the .T modifier.

Transactions executed outside normal market hours — meaning before 9:30 a.m. ET and after 4:00 p.m. ET but within ADF operating hours — must be reported within 10 seconds of execution and shall carry the .T modifier designating execution outside normal market hours. Specifically: transactions executed between 8:00 a.m. and 9:30 a.m. ET and between 4:00 p.m. and 6:30 p.m. ET must be reported within 10 seconds and designated .T. Transactions executed between 6:30 p.m. ET and midnight — after the ADF has closed — must be reported the following business day by 8:15 a.m. Eastern Time, designated as/of and carrying the unique trade report modifier to denote execution outside normal market hours. Reports submitted after 8:15 a.m. on T+1 for such trades are designated as late.

Cancellation and reversal reporting.

With the exception of trades cancelled in accordance with the FINRA Rule 11890 Series, members must report cancellations and reversals of ADF-reported trades to the same ADF facility through which the original trade was reported. Cancellations of trades executed between 9:30 a.m. and 4:00 p.m. ET and cancelled at or before 4:00 p.m. must be reported within 10 seconds of the cancellation. Cancellations of trades executed between 9:30 a.m. and 4:00 p.m. ET but cancelled after 4:00 p.m. and before the ADF's 6:30 p.m. session end must be reported, on a best-efforts basis, by 6:30 p.m. ET on the date of execution, and otherwise by 6:30 p.m. ET on the following business day.

Timestamp Granularity Requirements

FINRA has amended its reporting rules — effective November 15, 2021 for the ADF and TRFs — to require firms to report time fields in trade reports submitted to FINRA equity trade reporting facilities using the same timestamp granularity that they use when reporting to the Consolidated Audit Trail (CAT). Firms whose systems capture execution time in increments finer than milliseconds — including up to nanoseconds — must report to the ADF in that same finer granularity. Execution time must be expressed in hours, minutes, seconds, and sub-second increments based on Eastern Time in military format. This timestamp consistency requirement ensures that ADF trade report timestamps align precisely with the CAT order lifecycle data, enabling regulators to match reported transactions against the full order event sequence captured in CAT.

The ADF Sub-Series: Child Rules and Their Functions

The complete child rule list confirmed from FINRA.org includes the following within the FINRA Rule 6200 sub-series:

FINRA Rule 6210 — General establishes the foundational description of the ADF and confirms that ADF participants must comply with the Rule 6200 and 7100 Series as well as all applicable FINRA rules and federal securities laws.

FINRA Rule 6220 — Definitions establishes the operative definitions for the ADF sub-series, including: ADF-eligible security; Registered Reporting ADF Market Maker (a FINRA market maker registered in a designated security that displays quotations in the ADF and holds itself out as willing to buy and sell on a regular and continuous basis); Registered Reporting ADF ECN (an ECN that elects to display orders in the ADF); Registered Reporting Member (either category of registered ADF participant); and normal unit of trading (the round lot assigned to a security under SEC Regulation NMS Rule 600(b)).

FINRA Rule 6230 — Use of Alternative Display Facility Data Systems provides that FINRA may at any time authorise the use of ADF data systems on a test basis for whatever studies it considers necessary and appropriate.

FINRA Rule 6240 — Prohibition from Locking or Crossing Quotations in NMS Stocks prohibits ADF participants from displaying quotations that lock or cross protected quotations on other trading venues, implementing Regulation NMS Access Rule requirements.

FINRA Rule 6250 — Quote and Order Access Requirements requires ADF trading centers to provide direct electronic access to all other ADF trading centers and to all requesting FINRA members.

FINRA Rule 6260 — Review of Direct or Indirect Access Complaints establishes the complaint review process for FINRA Rule 6250 compliance disputes.

FINRA Rule 6270 — Quoting and Trading in ADF-Eligible Securities is itself a sub-marker organizing FINRA Rules 6271 through 6279, which address ADF market participant registration, quotation requirements, FINRA Rule 6273's normal business hours framework, clearance and settlement, and the withdrawal and termination of quotations; FINRA Rule 6280 — Transaction Reporting is a separate sub-marker covering FINRA Rules 6281 and 6282, including FINRA Rule 6282's transaction reporting obligations.

Recordkeeping Obligations for ADF Participants — Three Years, Two-Year Accessibility

ADF participants are subject to SEC Rule 17a-4's broker-dealer recordkeeping requirements, which require that records created in connection with ADF participation — including quotation logs, direct electronic access compliance records under FINRA Rule 6250, trade reports submitted under FINRA Rule 6282, and related supervisory and business communications — be preserved for a minimum of three years, with the first two years maintained in an easily accessible place.

This three-year/two-year accessibility framework is the standard retention schedule under SEC Rule 17a-4 for the category of records that ADF participation generates — including order and trade data, and compliance documentation. FINRA Rule 4511(c) further requires that all FINRA-required books and records be maintained in a format and media complying with SEC Rule 17a-4.

The practical significance for ADF participants is that FINRA examination staff assessing compliance with quotation display, access, and transaction reporting obligations under the Rule 6200 Series will expect firms to produce quotation logs, access provision records, and trade report data on demand throughout the full three-year retention period — with records from the most recent two years immediately accessible without special retrieval procedures.