Minimum Marketable Parcel (MMP)

The Australian Securities Exchange (ASX) requires a minimum investment of A$500 (excluding brokerage) when purchasing shares in any ASX-listed security for the first time. This is known as the ‘Minimum Marketable Parcel’ (MMP) of shares. 

If you sell all your shares in a company and later decide to buy into it again, this buy order will again be subject to the MMP rule.

The MMP applies to all CHESS-sponsored trades. If you have an account with another platform that does not require an initial A$500 initial minimum order for each security, they may be operating on a Custodial model, where all your shares are linked to the broker’s HIN. Learn more about the difference between Custodial and CHESS models here.

Minimum Order Size After MMP 

Once the minimum marketable parcel is met you can place smaller order sizes to increase your position in that same security. The minimum value of subsequent buy orders is A$20, which is to ensure that orders always meet market integrity rules.

Please note, this rule does not apply to sell orders.

MMP and Pending Sell Orders

If you submit a sell order for your entire position on a security and attempt to place a new buy order for the same security, your new buy order will be subject to the MMP rule even while the sell order remains active.