Since the start of FY27 in April 2026, the BSE Smallcap index has returned 29.8 percent against 8.5 percent for the Sensex, a gap of more than twenty percentage points. A move like this invites an obvious question: has the rally gone too far. The most direct way to answer that is not a single quarter’s return, but the one year return spread between small and large caps over a full cycle, and what has historically followed when that spread reached a similar level.
Return spreads, like valuation ratios, oscillate around a long run average rather than moving in one direction forever. A wide gap in favour of small caps has shown up repeatedly over the last two decades, and each time it has eventually narrowed, sometimes through a small cap correction, sometimes through large caps catching up, and sometimes simply through both segments moving together for a period. The direction of the next move is never certain. What the historical range does tell an investor is whether today’s gap looks ordinary or extreme against that backdrop.
The Primary Evidence
What the Return Spread
Is Actually Saying
The chart below tracks the one year rolling return spread between small caps and large caps since April 2004. It is the single most direct way to answer the question this article opened with, because it looks at relative price performance across a full two decade cycle rather than at any one quarter in isolation.
Source: Right Horizons internal research (RH House View, August 2026). This chart is an illustrative, stylised reconstruction of RH’s internal one-year rolling return-spread analysis between small caps and large caps since April 2004, intended to convey the historical range and where the current reading sits within it, rather than to reproduce exact values for every period.
The spread has historically oscillated between roughly minus 20 percent and plus 35 to 40 percent, with an average closer to the mid single digits. It has touched or approached the upper end of that range several times, including around 2005, 2010, 2015, 2021 and 2024, and each of those episodes was followed by the spread narrowing rather than by a sustained collapse in small cap prices. The current reading, built up over FY27TD, sits within this historical band rather than beyond it. That does not guarantee the spread narrows gently from here. It does suggest today’s gap is closer to a recurring feature of this market than to an unprecedented extreme.
This has also coincided with a shift in market structure. Foreign institutional investors were net sellers of Indian equities for most of the first half of calendar 2026, and turned net buyers in July, with inflows of ₹20,200 crore, according to data from the National Securities Depository Limited (NSDL). A single month of foreign buying does not by itself determine where small and mid caps go from here, but it removes one of the headwinds that weighed on the broader market earlier in the year, and it is consistent with a setup that looks ordinary rather than extreme.
The RH Lens
How This Fits Right Horizons’
Approach to Small and Mid Caps
A return spread sitting inside its historical range is a statement about the segment as a whole, not about any individual business inside it. Right Horizons treats that distinction as the starting point of its process rather than an afterthought. The firm’s approach to small and mid caps rests on four connected ideas: a focus on quality businesses screened for capital efficiency and durable competitive positioning, disciplined bottom-up research to separate companies with a genuine, sustainable earnings trajectory from those simply carried higher by a broader rally, a long term investment horizon matched to the multi-year period over which small and mid cap cycles typically play out, and a concentrated portfolio built on high conviction positions rather than broad exposure to the index.
Read this way, the return spread chart does not answer the question of which businesses to own. It answers a narrower, earlier question: whether the segment as a whole is at a point in its cycle where a research led search for those businesses is worth undertaking in the first place. Right Horizons’ own reading of this data is that a spread sitting inside its historical range, rather than at an extreme, is exactly this kind of point, provided the capital that follows is directed by the same research process rather than spread evenly across the index.
Two Instincts Worth Naming
The biases that make a wide return spread feel more alarming than the data supports
Not a Blank Check
Why This Is Not a Broad,
Indiscriminate Call
None of this is an argument for buying the small cap index indiscriminately. A return spread within its historical range describes the segment in aggregate, and aggregates blend well governed, capital efficient businesses with weaker companies that have simply been carried higher by the same rally. The case this data supports is narrower and more specific: that the segment as a whole does not appear to be at a historical extreme, which is a reasonable precondition for considering exposure, not a substitute for the research process described above that decides which businesses within it actually deserve capital.
The Practical Takeaway
Why This May Be a Reasonable
Entry Window, Sized Correctly
Put together, the evidence above makes a narrower and more defensible claim than “small caps are cheap.” It says that the recent gap between small and large cap returns is within its historical range, that the return of foreign capital in July removed one of the headwinds weighing on the broader market, and that Right Horizons’ own research process is built to translate a segment level setup like this into a portfolio of specific, carefully selected businesses rather than a bet on the index. For an investor with a time horizon long enough to look through a full market cycle, typically several years rather than several months, that combination is closer to a reasonable entry window than to a reason for caution.
A wide return spread is not, by itself, a reason to avoid a segment. History suggests it is more often a description of a cycle already underway than a warning of one about to end.
— RH AIF Research
Key Investor Takeaways
- The FY27TD gap is real but not unusual: small caps have returned 29.8% against 8.5% for the Sensex since April 2026, a spread that sits within its historical range since 2004 rather than at an extreme.
- Every prior approach to the upper band was followed by narrowing, not collapse: episodes around 2005, 2010, 2015, 2021 and 2024 all preceded a narrowing of the spread rather than a sustained small cap correction.
- Right Horizons’ process is built around this exact distinction: quality businesses, disciplined bottom-up research, a long term horizon and a concentrated portfolio, rather than broad exposure to the index.
- This is a case for the segment, not for every stock in it: index level data blends strong and weak businesses alike, and selecting which companies deserve capital still matters.
- Foreign capital has started returning: FII inflows turned positive in July 2026 at ₹20,200 crore after six months of outflows, removing one of the headwinds that weighed on the broader market earlier in the year.
Frequently Asked Questions
Data sources: Right Horizons internal research (RH House View, August 2026), data as of 31 July 2026, for the small cap to large cap return spread analysis and FY27TD index returns; Right Horizons internal research on small cap correction and recovery cycles since 2003; National Securities Depository Limited (NSDL), for net FII inflow figures. The return spread chart is an illustrative, stylised reconstruction of RH’s internal analysis intended to convey the historical range and where the current reading sits within it, rather than to reproduce exact values for every period. Past performance is not indicative of future results.