Contract law, the stockbroker-client relationship and negligent misstatement

This topic links three ideas. The Contracts Act 1950 decides when an agreement is a binding contract and what happens when it goes wrong. The same Act's agency rules, backed by the CMSA and the Rules of Bursa Malaysia Securities, set what a stockbroking company owes its client and what it may do when the client does not pay. The tort of negligent misstatement, plus statutory liability under the CMSA, covers careless advice and false documents. Expect short scenarios: a posted acceptance, a disobeyed price limit, a third party phoning in an order, a raid on the trust account.

8 min read6 sections

Contracts Act 1950 (Act 136, AGC reprint text); Capital Markets and Services Act 2007 (Act 671, SC consolidated text incorporating amendments in force 1 January 2026) ss.90-97, 108, 111-115; Rules of Bursa Malaysia Securities Chapter 5 (as at 30 June 2021), Chapter 7 (as at 21 November 2024), Chapters 9 and 10, and Participating Organisations' Directives and Guidance (as at 9 July 2026), Directives No. 5-001 and 5.15-001, read on bursamalaysia.com; Hedley Byrne & Co Ltd v Heller & Partners Ltd [1964] AC 465; Caparo Industries plc v Dickman [1990] 2 AC 605. Checked 12 October 2026. As at October 2026. Independent prep, not endorsed by SIDC or the SC.

Must-know for the exam

Acceptance by post is complete against the proposer when posted, so the proposer can revoke only up to that moment (Contracts Act ss.4(2), 5(1)).
A contract needs free consent, competent parties, lawful consideration and object (s.10); a minor's agreement is void; coercion, fraud or misrepresentation make it voidable.
A broker acting for a client is an agent: it must follow directions, use skill and diligence, render accounts, and account for secret profits (Contracts Act ss.164-169).
The client must indemnify the broker for lawful acts within its authority (s.175); an agent loses pay only for the part of the business it misconducted (s.173).
Rule 5.15: verify identity, obtain essential information and sign a written agreement; only an Authorised Nominee may trade for another person.
A third party may instruct on a client's account only with the client's written authorisation; profit sharing is allowed only in a Discretionary Account (Directive 5-001).
Trust account monies: withdrawals only to entitled persons, for brokerage and charges, or as law allows; never available for the broker's debts (CMSA s.113).
Clients may obtain copies of book entries on demand for a reasonable charge, and inspect contract notes free (CMSA s.114).
A PO need not give a defaulting client notice before selling out (Rule 9.13); it may still accept payment before the selling-out is done (Rule 9.12(2)).
Record keeping for brokers runs to seven years: CMSA s.108(3), Rule 5.04(2), DBT declarations under Rule 10.09(2)(c), and research circulars under CMSA s.91(8).

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Traps that cost marks

Candidates think a matched trade binds the client whatever his instructions were; between client and broker, the agent bears losses from disobeying them.
Candidates swap the two rules: copies of book entries may carry a reasonable charge; inspecting contract notes is free.
Candidates think receiving the asking price ends the matter; an agent's secret profit belongs to the principal.
Candidates think a broker can only sell out and absorb any shortfall; the client must indemnify it.
Candidates think misconduct either wipes out all fees or affects none; s.173 strips pay only for the misconducted part.
Candidates assume Bursa vets each new account, when the PO's own designated officer approves it.
Candidates think disclosure or a power of attorney cures trading for someone else through one's own account.
Candidates think marriage or the client's own say-so is enough to use another person's CDS account.

Making a contract

Under s.10 of the Contracts Act 1950, agreements are contracts if made by the free consent of parties competent to contract, for a lawful consideration and with a lawful object. Writing is not required unless a statute says so.

•Communication: acceptance by post is complete against the proposer when posted, and against the acceptor when it reaches the proposer (s.4(2)); a proposal may be revoked until acceptance is complete against the proposer, but not afterwards (s.5(1)); a revocation itself binds the other party only when it reaches him (s.4(3)).
•A reply that changes the terms is a counter-proposal, not an acceptance (s.7(a)).
•Consideration may move from the promisee or any other person (s.2(d)); s.26 lists when an agreement without consideration is still valid.
•Capacity: a person under 18 cannot contract (s.11; Age of Majority Act 1971), so a minor's agreement is void.

Matching orders on Bursa's trading system creates a binding contract on the terms of the matched orders, governed by the Rules.

Trap: Letting the proposer revoke after the acceptance is posted. Once posted, acceptance is complete against him, so his revocation comes too late.

Takeaway: Free consent, capacity, consideration, lawful object; acceptance by post binds the proposer the moment it is posted.

When contracts fail

Defect	Effect	Provision
Coercion, undue influence, fraud, misrepresentation	Voidable at the option of the party whose consent was caused	ss.14-20

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