ASIC Market Integrity Rules (Securities Markets) Determination 2025/862

The central concepts are Tier 1 Equity Market Product and Tier 2 Equity Market Product. These terms are defined in the Rules (not in this determination). The determination merely says that each product with a stock code listed in Schedule 1 is a Tier 1 product, and each product with a stock code listed in Schedule 2 is a Tier 2 product. Under the Rules, the distinction typically reflects liquidity, market capitalisation, and trading activity. Tier 1 products are generally the most liquid and heavily traded, attracting tighter market making obligations and more restrictive trading halts. Tier 2 products are less liquid, often subject to broader price bands and longer halt periods or different waiver conditions. The instrument also defines stock code as the unique symbol assigned to a product under Rule 9.2.3 of the Rules. This is important because stock codes may be reused or changed over time. The instrument lists both the stock code and the issuer name for convenience, but the classification attaches to the stock code, not the issuer. If an issuer changes its name or listing structure but retains the same stock code, the product stays classified as per the determination. Conversely, if a stock code is de-listed and reassigned, the classification would need to be re-determined. The instrument’s interpretation section states that capitalised terms (unless contrary intention) have the same meaning as in the Rules. Thus, Equity Market Product is defined by the Rules - it includes shares, ETFs, units, and other securities traded on an Australian securities market. The instrument applies only to products admitted to trading on ASX or other market operators subject to the Rules. Notably, the determination does not replace or update the classification for every product on the market; it covers only 112 securities. Products not listed in either schedule remain unclassified (or fall under default categories in the Rules). Market participants must therefore cross-reference this instrument with the existing classification framework. The schedules are exhaustive tables - each item has a single stock code and issuer. There is no catch-all or residual category. The determination is a standalone instrument, but its effect is entirely derivative of the Rules.

The determination directly affects market participants, including brokers, market makers, algorithmic traders, high-frequency traders, and any entity that places orders or executes trades in the listed securities. It also affects the market operator (ASX) and other licensed markets that trade these products. For each Tier 1 or Tier 2 product, the Rules impose different obligations. For example, market makers registered for Tier 1 products may have to maintain narrower spreads and deeper quote sizes than those for Tier 2 products. Brokers must apply correct trade reporting timelines and price thresholds. The classification may also affect which products are eligible for certain waivers (e.g., pre-trade transparency waivers for orders of large size). The listed entities themselves - the companies and ETF issuers - are indirectly affected. Being classified as Tier 1 may subject them to more frequent monitoring and stricter trading halts, but may also be seen as a signal of liquidity and market depth, potentially lowering their cost of capital. Conversely, Tier 2 classification may imply lower liquidity and wider bid-ask spreads, which can increase trading costs for shareholders and affect the entity’s index inclusion. Investors, both retail and institutional, are affected because the classification influences trading costs, execution speed, and availability of certain order types. For instance, retail traders using a broker who applies spread-based pricing may face wider spreads for Tier 2 products. ASIC itself is affected as it must maintain and update the determination as needed. The determination also has implications for regulatory reporting: trade data must be categorised by tier, and any breach of obligations tied to tier classification falls under ASIC’s enforcement purview. Compliance teams within brokerages and trading firms must update their systems to correctly flag each product as Tier 1 or Tier 2. They must also monitor changes - if ASIC issues a subsequent determination reclassifying a product, all systems must be updated accordingly. The determination is particularly relevant for firms that rely on automated trading logic that responds to tier-specific thresholds. The cost of compliance is not trivial: each time a new product is issued or reclassified, firms must adjust their internal rulebooks, risk controls, and monitoring dashboards. For smaller brokers, this may be a disproportionate burden relative to the trading volume in those securities.

This determination itself does not impose any duties or confer any rights. All substantive duties and rights arise from the parent Rules, which are triggered by the tier classification. Under the Rules, market participants have a duty to comply with market integrity obligations that are tier-dependent. For Tier 1 products, these may include: stricter pre-trade transparency requirements (meaning orders below certain thresholds must be displayed), tighter price band parameters (so orders cannot be placed too far from the last traded price), and faster trade reporting times. Market makers registered for Tier 1 products typically have a duty to continuously quote two-way prices during normal trading hours, with maximum spreads and minimum quote sizes. For Tier 2 products, the duties may be less onerous: wider tolerated spreads, larger price bands, longer reporting windows, and possibly fewer market maker obligations. Participants also have a duty to correctly classify each product when reporting trades or applying for waivers. The determination does not grant any rights to listed entities, although being listed in Schedule 1 may implicitly confer the benefit of being treated as a high-liquidity security, which could reduce regulatory friction for large block trades. The main right is the right to rely on the determination as authoritative evidence of a product’s classification. If a market participant follows the duties applicable to the correct tier, it is protected from enforcement for misclassification (provided the classification matches the determination). Conversely, if a participant mistakenly treats a Tier 1 product as Tier 2, it may breach the Rules and face potential penalties. The determination does not provide a mechanism for listed entities to challenge their classification - that would be a matter for ASIC under the Rules. There is no obligation on ASIC to reclassify products automatically; the determination is a snapshot as at 2025. If a stock’s liquidity changes, ASIC may choose to issue a new determination, but there is no statutory right to demand reclassification.

The determination contains no penalty provisions. Enforcement is through the parent Rules and the ASIC Act. Under the Rules, breaches of tier-specific obligations are subject to civil penalty provisions. For example, if a market participant fails to meet market making commitments for a Tier 1 product, ASIC may issue infringement notices, seek civil penalties in court, or suspend or cancel the participant’s market integrity licence. The maximum civil penalty amounts are specified in the Rules (subject to indexation) and can be substantial - often up to $1 million for an individual and $10 million for a body corporate per contravention. Criminal penalties may apply for serious breaches such as market manipulation or false trading, but those are not particular to tier classification. ASIC may also impose administrative sanctions: banning orders, adverse publicity, or requiring compliance programs. The determination itself is a legislative instrument; if ASIC incorrectly includes a product or a stock code is misprinted, there could be procedural challenges, but the instrument is likely protected from invalidity unless there is a jurisdictional error. Enforcement risk for market participants arises if they mischaracterise a product’s tier - for instance, if a firm’s systems incorrectly treat Zip Co (Tier 1) as Tier 2 and apply weaker price controls, ASIC could allege inadequate risk controls. The determination creates a clear evidentiary record: the stock code is the definitive identifier. Participants cannot argue that they believed a product was Tier 2 if the stock code appears in Schedule 1. This reduces ambiguity but also removes flexibility. The instrument provides no transitional relief for legacy trades or for errors in data feeds. Market participants must ensure their reference data is updated by the commencement date. Failure to do so could expose them to multiple breaches (e.g., each trade that is incorrectly reported or each order that does not comply with tier-specific price bands counts as a separate contravention). The cumulative potential penalty could be enormous for high-frequency firms.

This instrument is made under subrule 6.2.1(4) of the ASIC Market Integrity Rules (Securities Markets) 2017, which is itself a legislative instrument made under the Australian Securities and Investments Commission Act 2001 (ASIC Act) and the Corporations Act 2001. The Rules have the force of law and override inconsistent provisions in market operators’ business rules (e.g., ASX Listing Rules) to the extent of the inconsistency. The determination interacts with the following key laws: (1) Corporations Act 2001 - particularly Chapter 7 (financial services and markets). The Rules operate alongside the market integrity provisions in the Corporations Act, such as sections 1041A-1041H (misleading conduct, market manipulation, etc.). The tier classification can affect what qualifies as a large trade that is exempt from immediate pre-trade disclosure. (2) ASIC Market Integrity Rules (Securities Markets) 2017 - this is the primary instrument that the determination plugs into. The Rules define the obligations triggered by tier classification. (3) ASIC Market Integrity Rules (Market Administration) 2018 - may contain complementary provisions on operator obligations. (4) ASIC Market Integrity Rules (Competition in Exchange Markets) 2022 - if relevant, though that instrument deals with clearing and settlement. (5) Financial Markets (CSM) Regulations - not directly, but ecosystem. (6) Taxation laws - classification potentially affects the tax treatment of income streams like market maker rebates, but that is indirect. The determination does not override ASIC’s general powers under the ASIC Act. It also does not affect the operation of the Anti-Money Laundering and Counter-Terrorism Financing Act 2006, which remains applicable. Market participants must also comply with the Privacy Act 1988 and the Competition and Consumer Act 2010. The determination is subject to the Legislation Act 2003 as a legislative instrument. The Federal Register of Legislation must publish it. The instrument is disallowable by either House of Parliament within 15 sitting days after tabling. It could also be subject to judicial review under the Administrative Decisions (Judicial Review) Act 1977 if a person is aggrieved by the classification decision. However, the determination is likely a legislative instrument, not a decision, and thus judicial review may be limited. The interaction with foreign laws is minimal as the Rules apply only to trading on Australian markets. However, global firms that trade these products from overseas branches must ensure compliance with Australian laws when their trading affects Australian markets.

This is the first determination of its kind under subrule 6.2.1(4). It has no prior versions. It is a new instrument made on 2 December 2025 and registers on the Federal Register of Legislation at some date after that. The commencement date is 8 January 2026 or 20 business days after registration, whichever is later. Therefore, the instrument becomes effective no earlier than 8 January 2026. There is no transition period for market participants; the commencement date is a fixed point. After commencement, any trade or order must adhere to the classification. ASIC may issue a subsequent determination (2026/… or later) to amend the schedules. The instrument does not have a sunset date; it remains in force until revoked or replaced. The parent Rules have a sunset date under the Legislation Act (usually 10 years), but the determination would continue if the Rules are remade. Amendment history will track any future changes to the schedules. There is no trailing note or legislative history attached to this determination as it stands. Practitioners should monitor ASIC’s website for future determinations that add or remove products. The instrument is likely to be amended periodically as new stocks list, merge, delist, or as liquidity changes. However, there is no automatic updating mechanism. If a stock code is transferred from one issuer to another (e.g., corporate restructure), the classification persists unless ASIC issues a new determination. This creates a risk of stale classifications - a stock that was highly liquid in 2025 might become thinly traded a year later, but remains Tier 1 until ASIC acts. The lag between commercial reality and regulatory classification may distort market making incentives.

There is no litigation history mentioned in or for this instrument. As it is new, there have been no court challenges, no appeals, and no administrative review proceedings. However, we can anticipate potential litigation in the future. Possible grounds for challenge include: (1) Procedural error - if ASIC failed to consult as required under the rules regarding the determination. The instrument does not recite any consultation, but the parent rules may not require consultation for this type of determination. If it is made without proper delegation or improper purpose, it could be invalid. (2) Unreasonableness - if a particular stock was classified as Tier 1 despite clearly having low liquidity, a trader or issuer might argue that the classification is arbitrary and that the decision is vitiated by irrationality under the Wednesday doctrine (though in Australia the test is legal unreasonableness). (3) Jurisdictional error - if ASIC misinterpreted the term “Equity Market Product” or “stock code” in a way that excluded a product that should be classified, or included a product that is not an equity market product. The instrument lists Block Inc with stock code XYZ. Block Inc rebranded from Square; if the stock code was not properly assigned under Rule 9.2.3, there may be a debate. (4) Discrimination - if the classification treats similar products differently without justification, a breach of the implied freedom of political communication or equal protection? Unlikely, but not impossible. In practice, ASIC’s classification decisions are likely to be upheld if they are rationally based on objective criteria like market capitalisation and trading volumes. However, the instrument does not disclose the criteria used. The schedules appear to include a mix of large, mid, and small caps (e.g., Dronesheild, Zip Co, Whitehaven Coal in Tier 1; Westgold Resources, Vault Minerals in Tier 2). Without disclosed methodology, the classification may seem opaque. If challenged, ASIC would need to demonstrate that it had regard to relevant factors. There is no previous case law on this specific instrument. The parent Rules have been litigated occasionally (e.g., ASIC v NSG Services Pty Ltd), but those cases did not turn on tier classification. Practitioners should not assume the absence of future challenges.

Several less obvious features of this determination could trip up market participants. First, the instrument lists both a stock code and an issuer name, but the legal classification attaches to the stock code, not the issuer. If an issuer changes its name but retains its stock code, the classification continues. However, if an issuer survives a corporate restructure but the stock code changes (e.g., BHP Billiton to BHP Group - but BHP stock code remained), then the product would lose its classification unless ASIC updates. This can create a compliance gap. Second, the schedules include several ETFs: Vanguard Australian Shares Index ETF (VAS) is Tier 1, while iShares S&P/ASX 200 (IOZ) and Vanguard MSCI Index (VGS) are Tier 2. There is no obvious rationale for this distinction - both VAS and IOZ track similar benchmarks. The difference likely reflects market capitalisation or liquidity, but a trader handling both must apply different rules, increasing operational risk. Third, the instrument uses the stock code as the primary identifier, but stock codes are not unique over time. For example, ‘XYZ’ is Block Inc’s code, formerly used by another company long ago. The instrument assumes that the code at the date of the determination is stable. Fourth, there is no grandfathering for existing trades or orders. On commencement, all open orders must comply with tier-specific price thresholds. Any order that was valid under the old classification (if there was one) may be immediately non-compliant, forcing cancellation. Fifth, the instrument does not create a positive duty for ASIC to notify issuers or participants of their classification. A listed entity may not learn that it has been classified until a broker contacts them. Sixth, the determination is exhaustive - if a product is not in either schedule, it is neither Tier 1 nor Tier 2 under this determination. That may mean the default rules in the parent Rules apply (possibly a ‘residual’ tier), which may be less favourable. Seventh, the instrument includes a minor formatting issue: the table in Schedule 2 lists ‘AGL ENERGY LIMITED.’ with a full stop after ‘Ltd’. This is likely a typographical error, but it creates ambiguity for automated scanning - the period is part of the issuer name in the instrument, but the Rules may not recognise it. Eighth, the determination is signed by an ASIC delegate, but there is no evidence of external consultation. If the delegation was not valid (e.g., subrule 6.2.1(4) may require ASIC as a body to make the determination, not a delegate), the entire instrument could be void. However, ASIC typically has broad delegation powers. Ninth, instruments made under the Rules are subject to disallowance. If either House disallows this determination within 15 sitting days of tabling, the classification would be void ab initio. Market participants who relied on it could face chaos. Finally, the commencement date is tied to registration plus business days, not a fixed date. If registration is delayed, the commencement shifts, creating uncertainty for IT system updates.

Compliance requires a systematic approach. Market participants must first identify all products they trade that are listed in Schedules 1 or 2. For each product, they must update their internal rulebooks, trading systems, and compliance procedures to apply the correct tier-specific obligations. The steps are as follows:

1. Reference data update: Immediately after the instrument is registered, assign each stock code to a tier database field. Ensure the mapping is one-to-one and include the issuer name for verification. Where a stock code appears in neither schedule, determine the default tier under the Rules (likely no specific tier, so the most onerous or residual rules apply depending on the Rule).

2. System integration: Program trading platforms to recognise tier for pre-trade controls (price bands, order size thresholds for transparency waivers) and post-trade reporting (reporting deadlines, large trade reporting criteria). For algorithmic trading, adjust order placement logic so that, for Tier 1 products, orders are not permitted beyond a narrower range, while Tier 2 may allow a wider range.

3. Market maker obligations: If your firm acts as a market maker for any listed product, verify whether the relevant market making agreement requires compliance with tier-specific quoting obligations. For Tier 1, ensure continuous two-sided quotes with maximum spread and minimum size. For Tier 2, ensure compliance with any less demanding obligations.

4. Trade reporting: Ensure that reported trade messages include the correct tier designation if required by the market operator. Though ASIC may not require explicit tier in reports, the timing and threshold flags depend on tier. For example, a large trade in a Tier 1 product may be exempt from immediate pre-trade disclosure, but only if correctly marked.

5. Training: Educate trading desk staff and compliance officers on the classification. Provide cheat sheets for the 112 stock codes. Include alerts for any changes in future determinations.

6. Monitoring: Implement monitoring for regulatory changes. Assign a compliance officer to check ASIC’s legislative instrument register at least weekly. If a new determination replaces this one, the same steps must be repeated. Consider subscribing to ASIC’s email alerts.

7. Audit trail: Maintain records of how each product was classified and when system changes were implemented. This will demonstrate due diligence if ASIC investigates a breach.

8. Testing: Conduct pre-commencement testing of all systems using dummy data. Confirm that orders that should be rejected (e.g., orders outside price bands for Tier 1) are actually rejected.

9. Documentation: Create a compliance manual section that reproduces the schedules and explains the import. Include a procedure for handling ambiguous cases (e.g., stock code not listed, or issuer name discrepancy).

10. External communication: If you provide services to clients (e.g., broker), inform them of the classification and any impact on their trading. For institutional clients, provide tier codes for their own compliance systems.

Given the determination’s simplicity, the main compliance risk is omission: firms that trade only a few of these products may overlook the need to update. The cost of noncompliance could be disproportionate to the effort required. Therefore, a small investment in reference data management upfront can avoid significant penalties.