Sectoral and Thematic mutual funds explained

Every few years, a particular corner of the Indian economy catches fire. Sometimes it's the technology sector riding a global boom. Sometimes it's infrastructure, powered by government spending. Sometimes it's pharmaceuticals, thrust into the spotlight by a pandemic. And every time one of these waves rises, mutual fund houses are quick to launch or highlight funds that promise to capture that very opportunity. These are sectoral and thematic mutual funds, and they occupy one of the most exciting, and most misunderstood, corners of the Indian mutual fund landscape.

For investors who have graduated beyond simple index funds and diversified equity funds, sectoral and thematic funds represent a deliberate, concentrated bet on a specific idea. Done well, they can deliver extraordinary returns. Done poorly or without proper understanding, they can wipe out years of patient wealth-building.

A sectoral mutual fund is a fund that invests a minimum of 80% of its corpus in stocks belonging to a single sector of the economy. The Securities and Exchange Board of India (SEBI) mandates this concentration threshold, which means the fund manager has very little room to diversify outside the defined universe.

In India, popular sectoral fund categories include banking and financial services, technology (IT), pharmaceuticals and healthcare, fast-moving consumer goods (FMCG), energy, infrastructure, and real estate. When you invest in a banking sectoral fund, for instance, your money is channelled almost entirely into stocks like HDFC Bank, ICICI Bank, Kotak Mahindra Bank, Axis Bank, State Bank of India, and their peers. The fortunes of your investment are, therefore, almost entirely tied to the fortunes of that one sector.

This concentration is both the appeal and the risk. If the sector performs well, driven by favourable regulation, economic tailwinds, or strong earnings, the fund can dramatically outperform a broad market index. If the sector faces headwinds such as rising non-performing assets in banking, drug pricing pressure from the US FDA in pharmaceuticals, or margin erosion in IT, then the fund can fall just as sharply.

Thematic mutual funds are slightly broader in their investment mandate, though they are often confused with sectoral funds. A thematic fund invests in stocks that align with a central theme or investment idea, and that theme may cut across multiple sectors. SEBI also requires thematic funds to invest at least 80% of their assets in stocks related to the theme.

The distinction matters. Consider an "Infrastructure" thematic fund in India. Such a fund would not just buy construction companies. It would also include cement manufacturers, steel producers, logistics firms, power companies, and capital goods makers. The connecting thread is not a single industry classification but a shared exposure to a broader economic idea; the building of India's physical backbone.

Similarly, a "Make in India" thematic fund would span manufacturing companies across electronics, defence, auto components, and textiles where companies benefiting from the government's push to boost domestic production. An "ESG" (Environmental, Social, and Governance) thematic fund would pick stocks from across sectors but only those that score well on sustainability parameters. A "consumption" theme fund might own companies in retail, discretionary spending, durables, and media, all linked by the idea of the rising Indian consumer.

The broader canvas of thematic funds gives fund managers more flexibility to construct a portfolio, but they are still highly concentrated compared to a diversified equity fund. The risk is lower than a pure sectoral bet, but the thematic focus still makes these funds susceptible to sharp swings when the underlying narrative falls out of favour.

SEBI's 2017 mutual fund categorisation circular was a landmark moment for Indian investors. Before this, fund houses used loose terminology that made it hard to compare products across the industry. After SEBI's intervention, all equity mutual funds were bucketed into well-defined categories and sectoral and thematic funds were recognised as a distinct class within the equity fund universe.

Under SEBI norms, sectoral and thematic funds are categorised together as a single type, allowing fund houses to launch multiple funds under this umbrella as long as each has a distinct sectoral or thematic focus. This is one of the few equity fund types where SEBI permits multiple funds from the same house because a banking fund and a pharma fund, for example, are genuinely different products serving different investment objectives. This flexibility has led to a proliferation of offerings, with most large fund houses in India now running half a dozen or more such funds under their umbrella.

India's economic story has given rise to a rich and evolving set of sectoral and thematic opportunities. Understanding the current landscape helps investors contextualise which of these funds exist and why.

The banking and financial services sector remains the most popular and most tracked in India. Given that financials make up a significant chunk of both the Nifty 50 and the BSE Sensex, a dedicated banking sectoral fund (such as those benchmarked against the Nifty Bank index) allows investors to take a pure-play bet on India's credit growth story, the formalization of the economy, and rising financial inclusion.

The technology sector has been another evergreen favourite. Indian IT companies like TCS, Infosys, Wipro, HCL Technologies, and Tech Mahindra are world leaders in software services and digital transformation. Sectoral IT funds thrive when global technology spending is robust and the Indian rupee is weak (since most revenues are in US dollars). However, they suffer during periods of global IT slowdown or when US corporations tighten their technology budgets.

The pharmaceutical and healthcare sector gained enormous prominence after the COVID-19 pandemic. India's position as the "pharmacy of the world" supplying generics globally and vaccines during the pandemic made pharma sectoral funds enormously attractive during 2020 and 2021. However, the sector's cyclical nature and its dependence on US FDA approvals mean sharp reversals are common.

Infrastructure is a theme that aligns closely with India's policy agenda under the National Infrastructure Pipeline (NIP), which envisions massive capital expenditure in roads, railways, ports, airports, urban transit, and housing. Thematic infrastructure funds have benefited from this multi-year government commitment, and the PLI (Production Linked Incentive) scheme has further energised the manufacturing angle of these themes.

In recent years, entirely new themes have emerged and drawn investor attention. Defence is one with India aggressively pushing for indigenous defence manufacturing and reducing import dependence, dedicated defence-themed funds have launched and attracted significant inflows. Business Cycle funds, which rotate across sectors depending on where the economy is in its expansion-contraction cycle, are another novel thematic concept that has gained traction.

The primary motivation behind investing in a sectoral or thematic fund is a high-conviction view. An investor who believes, for instance, that India's renewable energy transition is inevitable and will play out over the next decade may want direct, concentrated exposure to companies in solar energy, wind power, green hydrogen, and EV infrastructure rather than diluted exposure through a diversified equity fund that owns hundreds of stocks across many sectors.

There is also a tactical use case. Experienced investors sometimes use sectoral funds to tilt their overall portfolio toward a sector they believe is undervalued or about to turn the corner. If someone believes that after years of underperformance, the Indian real estate sector is finally on a recovery path due to rising demand and improving developer balance sheets, they might add a small position in a real estate sectoral fund while keeping the bulk of their portfolio in diversified equity funds.

Some investors use thematic funds as a way to participate in macro trends without doing the hard work of picking individual stocks. If you believe in the India consumption story but don't know which individual retail or consumer durables company will win, a consumption thematic fund does that selection for you, within the framework of the theme.

Despite their appeal, sectoral and thematic mutual funds carry risks that are significantly higher than diversified equity funds, and Indian investors have learned this the hard way more than once.

The most fundamental risk is concentration. When you own a diversified equity fund, a bad quarter for one sector is cushioned by other sectors performing well. A sectoral fund offers no such cushion. When the entire banking sector was hit by the NPA (Non-Performing Assets) crisis that unfolded in India between 2015 and 2019, banking sectoral fund investors saw their portfolios stagnate or decline for years even as the broader Nifty 50 ground higher. Similarly, pharma sectoral fund investors who entered near the peak in 2015 had to wait almost five years to recover their capital as US FDA import alerts battered Indian pharmaceutical companies one after another.

The second major risk is poor timing. Human psychology is not kind to sectoral investing. Most retail investors are drawn to sectoral funds after a theme has already delivered spectacular returns and made the headlines. By the time a banking fund or an IT fund is generating buzz and attracting large inflows, the easy money has often already been made. The investor entering at the peak of a sectoral cycle can face years of underperformance and frustration.

A third risk is the illiquidity problem at a portfolio level. Sectoral funds hold concentrated positions in a relatively small number of stocks within a defined universe. During a sharp sector-wide selloff, these funds can face redemption pressure precisely when the underlying stocks are also falling, creating a compounding effect on NAV (Net Asset Value) erosion.

As a general rule, sectoral funds tend to carry higher risk than thematic funds, though this is not always the case. A pure banking sectoral fund is more concentrated than an "India Manufacturing" thematic fund, which spans many sectors. The thematic fund's broader mandate provides more room for diversification within the theme, which tends to smoothen returns over time.

However, some themes can be extremely narrow in practice. A fund themed purely around "defence" or "digital India" may end up with a portfolio that looks almost as concentrated as a sectoral fund, especially if the eligible stock universe is small. Investors should always look at the actual portfolio holdings of a thematic fund, not just its marketing label before drawing conclusions about its true risk profile.

Evaluating these funds requires a different mental model than evaluating a regular diversified equity fund. The first question to ask is not "which fund has the best past returns?" but rather "do I have a well-reasoned, long-term conviction in this sector or theme?"

Once the conviction question is answered honestly, the next step is to examine the fund's portfolio construction. How many stocks does it hold? The fewer the holdings, the higher the concentration risk. What are the top holdings and what percentage of the portfolio do they represent? A fund where the top five stocks account for 60% of the portfolio is significantly more volatile than one with a more spread-out construction.

The fund manager's track record and their depth of understanding in the specific sector also matters more here than in a diversified fund context. A fund manager with deep expertise in financial services companies will likely navigate a banking sectoral fund better than a generalist.

Financial planners in India consistently advise that sectoral and thematic funds should not form the core of a retail investor's portfolio. They are best used as satellite holdings, meaning, a small portion of the overall equity allocation, typically no more than 10% to 15% for most retail investors, reserved for those who have a genuine, research-backed conviction in a specific opportunity.

It is also worth noting that Systematic Investment Plans (SIPs) in sectoral funds work differently than in diversified funds. Since sectors and themes are cyclical, an SIP can help average out entry prices over a sector's cycle but only if the investor has the discipline to continue investing even when the sector is out of favour and the fund is underperforming. This requires considerably more emotional resilience than running an SIP in a broadly diversified fund.

One of the most common mistakes is chasing recent performance. Indian investors poured money into technology sector funds during the IT boom of 2021, only to see those same funds crash by 30%–40% in 2022 as global interest rate hikes hit high-growth tech valuations. Similarly, the rush into infrastructure funds after a period of strong government spending announcements often comes just as valuations are stretched.

Ignoring exit strategy is also a pitfall. Because sectoral funds are tied to a theme, investors need to actively monitor whether the original investment thesis is still valid. Unlike a diversified equity fund, which can be held passively for decades, a sectoral fund may require periodic reassessment. If the banking sector's outlook changes structurally, or a technology theme has fully played out, it may be time to exit even if that means crystallising a gain and paying taxes.