The Sensex closed down 455.59 points at 78,499.17 on Friday, and the Nifty slipped 65.35 points to 24,570.65, with financial stocks doing almost all the damage. Bajaj Finance was the single biggest drag on both benchmarks, tumbling as much as 5.2% intraday — its sharpest single-day fall since March — while auto and IT stocks actually rallied and kept the overall decline from being worse. The trigger wasn't an earnings miss or a global cue. It was a regulatory proposal: the RBI wants to bar non-banking financial companies from offering revolving credit facilities altogether.

What the RBI is actually proposing

The draft rule would restrict NBFCs to term loans only, cutting off revolving credit — the open-ended, draw-and-repay lending structure that underpins a large share of Bajaj Finance's consumer lending book — as a product category. The carve-out is narrow: NBFCs already licensed to issue credit cards would be exempt, since revolving credit is inherent to how a card works. Everyone else in the shadow-banking space that has built a lending business around flexible, revolving credit lines would need to restructure that business around fixed-term loans instead.

Why the market reaction was this sharp, this fast

A 5% single-day move on a proposal — not a final rule, not an implementation date, just a draft — is a large reaction, and it tells you something about how central revolving credit is to the NBFC growth story investors have been pricing in. Bajaj Finance's market cap reportedly lost roughly ₹33,000 crore in the selloff. The stock wasn't trading down on a change to its existing loan book; it was trading down on the market repricing how big that loan book can plausibly get if the product line it has scaled fastest is no longer available to originate the same way. Term loans and revolving credit are structurally different businesses — different repayment patterns, different customer acquisition economics, different risk profiles — and a forced pivot from one to the other isn't a rounding error for a company that has built underwriting infrastructure around the flexible product.

It wasn't just Bajaj Finance

Tata Capital, L&T Finance, and Poonawalla Fincorp all traded lower alongside Bajaj Finance and its listed affiliate Bajaj Finserv, and the Nifty Financial Services index fell more than 1% on the day. That breadth matters — it's the market's way of saying this isn't a company-specific problem, it's a sector-wide repricing of how NBFCs are allowed to compete with banks and credit-card issuers going forward. Banks, notably, weren't dragged down the same way; if anything, a rule that narrows what shadow lenders can offer nudges some competitive pressure back toward traditional lenders and card issuers, which is presumably part of the RBI's underlying calculus.

What actually happens next

This is a draft proposal, not a finalized regulation — the RBI typically opens rules like this for industry comment before implementation, and NBFCs have a direct interest in pushing back on scope and timelines. The size of Friday's selloff suggests the market isn't waiting for that process to play out before repricing the risk; it moved on the headline itself. What's worth tracking from here is whether the final rule keeps the blanket restriction or carves out more exemptions, what transition window NBFCs get to unwind or restructure existing revolving facilities, and whether Friday's reaction proves to be an overreaction to a draft or an accurate read on how structurally important revolving credit really is to the NBFC growth model.