Examine the evolution of SEBI's regulatory approach toward short selling in India since the early 2000s.

Short selling — sale of securities the seller does not own — is operationalised through the Securities Lending and Borrowing (SLB) mechanism. Since the early 2000s SEBI has shifted from scam-induced prohibition to a screened, calibrated liberalisation, without ever conceding on settlement discipline.

Phase I — Restrictive legacy (early 2000s)

• Stock market scam scandals exposed settlement and manipulation risk, prompting tighter cash-equities rules [5].
• Lending remained confined to the Securities Lending Scheme, 1997, with clearing corporations acting as Approved Intermediaries [2].

Phase II — Legitimisation (2007–08)

• The December 2007 circular permitted short selling by all classes of investors, retail and institutional [1].
• Naked short selling was barred: delivery at settlement made mandatory; institutions must disclose the short upfront and cannot square off intra-day [1].
• A screen-based SLB platform was created, with order matching and tenure up to seven days [2].

Phase III — Consolidation and caution (2017–20)

• The November 2017 review circular strengthened SLB operations [3].
• Collateral was retained at up to 130%, against roughly 100% in the US and Europe — a deliberately conservative buffer [5].
• Eligibility was tethered to the F&O segment: minimum average monthly turnover of ₹1 billion and market-wide derivatives exposure of ₹1 billion, leaving only 176 of NSE's ~2,600 listed companies eligible [5].

Phase IV — Codification and re-liberalisation (2024 onwards)

• SEBI's Framework for Short Selling (January 2024) consolidated scattered norms into a single code [4].
• SEBI is now deliberating a near doubling of eligible stocks to about 350 and a cut in collateral, to deepen the cash market and draw retail investors away from the riskier derivatives segment [5].

The trajectory shows a regulator that legitimised short selling as a price-discovery tool while ring-fencing it against default risk. Going forward, widening the lendable universe on liquidity-based rather than derivatives-linked criteria, paired with strong surveillance and investor awareness, can deliver a deeper, fairer cash market — the balance between market development and investor protection that SEBI's founding mandate envisages.