SEBI proposes API-based overhaul of institutional trade processing
Synopsis
SEBI has flagged that a single provider handles 95–99% of all institutional STP traffic in India — a systemic single point of failure. Its proposed fix: scrap the centralised hub and let service providers talk directly via APIs. The shift could redraw the competitive map of India's market infrastructure.
Key Takeaways
SEBI released a consultation paper on 19 May proposing an API-based replacement for the centralised STP hub used in institutional trade processing.
A single service provider currently handles 95–99% of all STP traffic in India, creating a systemic single point of failure.
The proposed API framework would allow service providers to communicate directly, cutting latency and reducing costs.
Brokers , custodians , and institutional investors will not need major system-level changes under the new model.
Optional API-based communication within the same provider is also proposed to eliminate error-prone manual file transfers.
Public comments on the proposal are open until 9 June .
The Securities and Exchange Board of India (SEBI) on Tuesday, 19 May proposed a sweeping overhaul of the Straight Through Processing (STP) framework that underpins institutional stock market transactions, aiming to eliminate latency, reduce costs, and dismantle a dangerous concentration of infrastructure risk. The proposal, floated via a consultation paper, would replace the existing centralised hub model with a direct, API (application programming interface)-based communication architecture.
What Is Being Changed and Why
STP is the backend plumbing of institutional markets — it facilitates the exchange of electronic contract notes, settlement instructions, and other trade-related messages among brokers, custodians, and institutional investors. Its use is mandatory for institutional trades settled through custodians. Under the current setup, every message between service providers must pass through a single centralised hub before reaching its destination, adding transmission time and inflating operational charges for all participants.
The more pressing concern flagged by SEBI, however, is concentration risk. According to the regulator, roughly 95–99% of all STP traffic in India is currently handled by a single service provider — a structural vulnerability that creates the conditions for a systemic single point of failure in the country's institutional trading ecosystem.
How the API Framework Would Work
Under the proposed model, STP service providers would communicate directly with one another via APIs, bypassing the centralised hub entirely. SEBI said this shift would improve operational efficiency, enhance scalability, and strengthen the resilience of the trade-processing system. Critically, the regulator clarified that brokers, custodians, institutional investors, and other STP users would not need to undertake major system-level modifications to comply with the new framework.
The regulator has also proposed enabling optional API-based communication between users serviced by the same provider. This is aimed at reducing reliance on manual file uploads and downloads — a legacy practice that remains susceptible to operational errors and processing delays.
The Concentration Risk Problem
The near-total dominance of a single provider over STP traffic is the sharpest concern underlying this proposal. A technical outage or service disruption at that provider could, in theory, paralyse institutional settlement across the market. This is the kind of systemic fragility that regulators globally have moved to address in the wake of post-pandemic infrastructure stress tests. SEBI's proposed decentralisation mirrors similar moves by regulators in the European Union and the United Kingdom, where single-point infrastructure dependencies in clearing and settlement have been progressively unwound.
Next Steps and Industry Implications
SEBI has invited public comments on the consultation paper until 9 June. The regulator's assurance that end-users will not face major system overhauls is designed to pre-empt industry pushback, though the incumbent STP provider stands to lose significant market share under the new framework. Industry bodies representing custodians and institutional brokers are expected to weigh in before the comment deadline. How SEBI balances transition timelines against operational continuity will be the key detail to watch in the final circular.
Point of View
And it has been hiding in plain sight. A single provider controlling virtually all institutional STP traffic is not a market — it is a monopoly with systemic consequences, and SEBI is right to act. The API shift is technically sound, but the harder question is transition governance: who certifies new providers, how quickly can alternatives scale, and what happens to settlement continuity during the switchover? SEBI's assurance that end-users won't need major modifications is reassuring on the surface, but the incumbent provider's exit timeline and liability framework during any parallel-run period will determine whether this reform delivers or merely reshuffles the concentration risk to a different layer.
NationPress
4 Jul 2026
Frequently Asked Questions
What is SEBI's proposed overhaul of the STP system?
SEBI has proposed replacing the existing centralised Straight Through Processing hub — which routes institutional trade messages through a single intermediary — with a direct API-based communication framework. The change aims to reduce latency, lower costs, and eliminate the concentration risk created by near-total dependence on a single provider.
Why is the current STP hub model a problem?
According to SEBI, roughly 95–99% of all STP traffic is handled by a single service provider, creating a systemic single point of failure. The centralised hub also adds transmission delays and higher operational costs for brokers, custodians, and institutional investors.
Will brokers and custodians need to overhaul their systems?
No. SEBI has clarified that the proposed API framework will not require brokers, custodians, institutional investors, or other STP users to make major system-level modifications, easing the compliance burden of the transition.
What is the deadline to submit comments on the SEBI consultation paper?
SEBI has invited public comments on the proposal until 9 June. Industry participants, custodians, and institutional brokers are expected to respond before the deadline.
How does the proposed API model improve market resilience?
By enabling direct communication between service providers without routing through a central hub, the API model distributes infrastructure risk, improves scalability, and reduces vulnerability to outages at any single provider. It also addresses manual file-transfer errors by enabling optional API links within the same provider's user base.
