Editor’s note: This is general educational information about South African settlement infrastructure, not investment advice, and it does not recommend any strategy. It is based on the official documents listed at the end.
Analysis: the short sale is a settlement position, not a trading position
The mechanism explains a common misreading. A short position is often described as a bet on price. In settlement terms it is a dated delivery obligation with a fine attached, and the constraint that binds is not conviction but the availability of stock whose owner has consented in writing to its use.
Two features of the design carry most of the weight. The first is that debit balances are not permitted and imbalances must be reconciled within 24 hours, which means the system cannot quietly carry an unmatched short. Something either delivers or fails, and failure is visible to the depository the same day. The second is the moment of finality. Because revocation is blocked by system functionality after that point and the securities leg cannot settle unless the cash leg settles, the two sides of a short close together or not at all.
What this framework establishes is legal certainty about delivery. Strate’s disclosure grounds that certainty in the Financial Markets Act, the Companies Act and the National Payment System Act, and states that finality is maintained even in insolvency proceedings. What it does not establish is anything about the size or direction of short positions. None of these documents is a position-reporting regime, and none of the rules cited here tells a reader how much of a given security has been lent.
The forward-looking questions therefore point at the plumbing rather than the trade. A reader tracking settlement stress would look at the incidence of failed settlements under Rule 7.3.1.2 and the fines imposed under Rule 7.3.2.2, at whether shortages are showing up as intraday delays or as end-of-day failures, and at the split between segregated and omnibus account structures, since that split determines how quickly a lender’s securities can be identified when a recall is made.
What the documents say
Selling a share you do not own is a trading decision. Delivering it three days later is an infrastructure problem, and it belongs to somebody else. Between the trade and the delivery sits a chain of statutory duties, depository rules and central bank accounts that decides whether the sale completes at all. Most of that chain is invisible from a trading screen, and all of it is public.
The account structure that makes a borrow possible
A short seller has to deliver securities it does not hold, which means borrowing them from someone who does. The Financial Markets Act, 2012, published in Government Gazette 36121 on 1 February 2013, sets the boundaries on what can be done with client stock. Section 22 requires every authorised user to deposit securities held for its own account and for clients in separate securities accounts, and to ensure that client securities are identifiable as belonging to specific persons. Balances must be reconciled daily against the participant or depository holding them unless exchange rules provide otherwise, and reconciling differences must be rectified within a prescribed period.
Section 18 restricts what an authorised user may do with pledged securities: it may not borrow against them an amount exceeding the outstanding balance it lent the pledgor against them, and it may not repledge them without the pledgor’s written consent. Section 20 allows an authorised user to alienate listed securities deposited with it only where the depositor has authorised that alienation in writing. Together those provisions mean lendable stock is not simply whatever sits in a broker’s system. It is stock whose owner has agreed, in writing, to its use.
Ownership of the borrowed shares is itself a statutory construct. Section 37 provides that where securities are deposited with a participant or a central securities depository, the owner at the time of deposit becomes entitled to an interest as co-owner of all securities of the same kind in that account, with the interest calculated by reference to the proportion the holding bears to the total of that kind held in the account. A written statement from the participant or the depository specifying that interest is sufficient proof of title. Securities held for another person must be segregated and identifiable and are treated as trust property under the Financial Institutions (Protection of Funds) Act.
What happens on settlement day
Strate, South Africa’s principal central securities depository, is regulated by the Financial Sector Conduct Authority, the Prudential Authority and the Oversight Division of the National Payment System at the South African Reserve Bank, and it operates as a self-regulatory organisation that writes and enforces its own rules and directives.
Those rules turn a trade into an obligation in two steps. Strate Rule 7.3.2.1 provides that once a participant’s conditional commitment to settlement becomes unconditional as stipulated by directive, the participant must ensure the transaction settles on settlement day. Rule 7.3.1.2 defines the failure case: any settlement that fails because a participant cannot meet its commitment is a failed settlement and must be dealt with under the rules, directives and, where applicable, the rules of the relevant exchange. Rule 7.3.2.2 lets Strate impose a fine on a participant that is not in a position to settle an on-market or off-market trade on settlement day, or proceed under its disciplinary procedures.
Settlement itself runs in batches. Strate’s own disclosure describes settlement runs triggered at regular intervals during the settlement day, with temporary shortages of funds or securities causing intraday delays and permanent shortages resulting in settlement failure and potential penalties. Unresolved transactions fail at end of day. Settlement of the securities leg always depends on successful settlement of the cash leg, and Strate provides rolling cash projection obligations to the central bank to improve visibility over pending settlements.
The money moves in central bank funds. Strate conducts all money settlements through the central bank real-time gross settlement system on an irrevocable basis, settles only in rand, and does not settle in commercial bank money. Delivery versus payment occurs on settlement date, and transfer of ownership is final, irrevocable and unconditional. Ownership passes by book entry: under Rule 7.3.3.2 a transferee becomes the owner of securities on the crediting of its securities account.
The point of no return
Section 35(2)(w) of the Financial Markets Act empowers Strate to determine the point of irrevocability of an instruction. Strate Rule 7.3.2.4 provides that no settlement instruction may be revoked by a participant, client or settling party after the moment of finality stipulated by directive, and system functionality blocks withdrawal once that point is reached. The narrow exceptions are set out in law and directive, including insolvency, death and reversal instructions from an exchange. Rule 7.3.2.3 preserves the right to revoke a commitment before the moment of finality where insolvency proceedings are brought against a participant, client or settling party, under section 35A of the Insolvency Act and section 35(2)(w) of the Financial Markets Act.
Around that core sit integrity controls. Strate acts only on authenticated instructions from licensed participants or exchanges, mandates daily balancing with participants and issuers with imbalances reconciled within 24 hours, does not permit debit balances, and prohibits the use of securities in client accounts for any purpose other than as instructed. Clients may choose between segregated and omnibus account structures.
