The average advance-to-decline ratio on Indian stock markets fell to 0.9 in October so far, its lowest level since March 2026, even as the Sensex and Nifty kept climbing. In plain terms, more stocks are falling than rising, and the headline indices are hiding that weakness.

The Sensex has gained 2.3% and the Nifty 1.4% this month. Underneath, the BSE MidCap 150 has dropped 3% and the BSE SmallCap 250 has fallen 4.2%. That reverses the broader trend this year, when small- and mid-cap stocks had been leading the market.

The divergence most investors are not pricing in

The ratio has now stayed below 1 for a second consecutive month. That means declining stocks have outnumbered advancing ones, and the weakness in market breadth is continuing. The last time the ratio was this low was in March 2026, when the Iran-US war triggered a selloff in global equities.

The gap between frontline stocks and the broader market is the problem. When a handful of large companies carry the index higher while most individual shares slide, the rally rests on a narrow base. Market breadth is often the first place where that fragility shows up.

Jio Platforms and the liquidity squeeze

Ravi Singh, chief research officer at Master Capital Services, attributed a significant part of the recent weakness to the Jio Platforms IPO. Investors set aside funds for the issue, and that money came out of the secondary market. Less cash chasing existing shares puts direct pressure on prices, especially in segments that already look expensive.

Profit-booking and the price of growth

Market experts said profit-booking after the strong rally in midcap and smallcap stocks has weighed on sentiment. Stretched valuations and uneven corporate earnings have added to the pressure. Investors are no longer willing to pay high prices for growth that has not yet shown up in the numbers.

Investors are becoming less willing to pay high prices based on future growth expectations when earnings and cash flows do not justify valuations.

That shift is the core of the warning. Money is not leaving the market in a panic. It is moving out of stories that depend on future growth and into companies that can show profits and cash today. Institutional money is rotating toward larger, more liquid companies with stronger balance sheets and predictable earnings. That rotation is the reason benchmark indices have held up while the rest of the market has come under strain.

Energy costs, rates and the dollar

Rising energy costs are a second concern for India. The country depends heavily on imports, and higher energy prices feed directly into inflation and corporate margins. Every rupee of extra input cost is a rupee that companies cannot put into profit.

Experts also pointed to uncertainty over global interest rates, rising US bond yields, a stronger dollar and geopolitical risks. Foreign investor selling has added to the pressure. Together, these factors have dampened risk appetite across the market.

Tejas Shah, head of trading at Equirus Securities, said these conditions have made investors far more selective. Selling pressure is now concentrated on companies that are fundamentally weaker, highly leveraged or overvalued. In a market like this, the stocks that look cheapest on the surface can be the ones carrying the most risk.

The leverage question nobody can settle

Borrowed money is another pressure point. The margin trading facility book has declined for three consecutive weeks. But how much it has fallen depends on which period is measured. Data cited in the original figures showed a 4.7% decline in October up to October 23.

That figure matters because leveraged positions are usually the first to be forced out when prices turn. A shrinking margin book can mean traders are cutting exposure, but it does not erase the risk that remains. Experts flagged leverage as an ongoing concern, not a resolved one.

What the data is telling investors

Taken together, the picture is uncomfortable. Benchmark indices are rising, yet most stocks are not keeping pace. Liquidity is being pulled toward a large IPO. Valuations are being questioned. Energy costs, global rates, a firm dollar and foreign selling are all weighing on risk appetite. Leverage is still in the system.

The sources do not say when market breadth will recover, or whether the current divergence will end with the indices falling toward the broader market or the broader market catching up. What they do make clear is that the strength in the headline numbers is not the same as strength across the market. Investors who only watch the Sensex and Nifty may be missing the signal that matters most right now.