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Indian equities ended the week on a volatile note, with the Sensex and Nifty witnessing sharp swings and closing lower as uncertainty around the US–Iran conflict kept investors on edge.The impact spilled beyond equities. The rupee slid to record lows near 95 against the US dollar, pressured by surging oil prices and persistent foreign outflows.Sectors like metals and PSU banks bore the brunt of the sell-off, highlighting a broader risk-off sentiment driven more by geopolitics than domestic fundamentals.In a market driven by headlines and uncertainty, volatility has once again taken centre stage. For the retail investors investing through SIPs, the question is immediate—should you stay the course or step aside?As Adhil Shetty, CEO of BankBazaar told TOI, “Geopolitical events tend to trigger two responses in markets. One is short-term volatility driven by uncertainty and sentiment. The other is a more lasting shift where earnings, costs, or capital flows are structurally affected. For investors, the challenge is to distinguish between the two.”Thus, while volatility often triggers fear and knee-jerk reactions, the core design of a Systematic Investment Plan is built to navigate exactly these phases; turning market swings into a potential long-term advantage for disciplined investors.

Let’s dive deep into SIPs to understand how volatility becomes an opportunity.

Two market scenarios

To understand why volatility can actually benefit SIP investors, consider two simplified market conditions.

In a stable market, an investor putting in Rs 10,000 every month accumulates units at largely similar price levels. With limited price movement, the average cost of investment remains relatively flat, and returns depend mainly on gradual market appreciation.Contrast this with a volatile market. Here, prices swing sharply, falling during periods of stress and rising during recoveries. The same Rs 10,000 investment buys more units when markets dip and fewer when markets rise. Over time, this leads to a lower average cost per unit.When markets recover, the additional units accumulated during downturns begin to deliver stronger gains.The takeaway is counterintuitive: the very volatility that unsettles investors is what allows SIPs to work more efficiently, provided the investor stays consistent.

The behavioural trap

If volatility mathematically benefits SIPs, why do investors still panic and act against their own interests?The answer lies in behavioural finance, the study of how cognitive biases and emotions influence financial decision-making, often leading to suboptimal outcomes.At the core, investors are not wired for long-term wealth creation. They are wired for immediate risk avoidance. In financial markets, that instinct tends to misfire, because volatility feels like danger, even when it may represent opportunity.Three behavioural biases typically dominate during periods of market stress:Loss aversionA key principle of Prospect Theory (Daniel Kahneman and Amos Tversky), which studies how people make decisions under uncertainty, states that individuals evaluate outcomes relative to a reference point (usually their purchase price) and feel losses far more intensely than equivalent gains.In effect, the pain of losing is psychologically about twice as powerful as the pleasure of gaining.In the context of the current market volatility, driven by war-led uncertainty, falling indices, and a weakening rupee, this bias becomes highly visible. A 10 per cent drop in portfolio value is not seen as a temporary fluctuation, but as an urgent threat.This is what pushes investors to pause SIPs or redeem investments, even though falling markets are precisely when SIPs are designed to accumulate more units at lower prices.Recency biasRecency bias refers to the tendency to give disproportionate weight to recent events and assume they will continue.When markets decline over consecutive sessions, as seen this week, investors begin to extrapolate the trend forward. Short-term corrections start to feel like sustained downturns.As a result, SIP contributions are paused or delayed, with decisions driven by recent losses rather than long-term return potential.Herd behaviourIn uncertain environments, individuals look to others for cues. When markets are falling and headlines turn negative, selling becomes socially validated.The logic shifts from “Is this the right decision?” to “Everyone else is doing it—should I too?” This reinforces panic cycles and accelerates exits.

The cost of getting it wrong

If behavioural biases explain why investors react, the real damage shows up in how those reactions play out over time.In volatile phases, like the current market environment shaped by geopolitical tension, the most common mistake made is trying to time decisions around uncertainty.The pattern is familiar. Markets fall sharply, often triggered by an external shock such as war. In response, investors pause SIPs or exit positions to avoid further losses. As volatility persists, they wait for signs of “stability” or confirmation that the worst is over.But by the time that certainty appears, markets have typically already begun to recover.Re-entry then happens at higher levels, after a portion of the upside has been missed.The cost of this sequence is not always immediately visible, but it compounds over time. Investors lose the opportunity to accumulate units at lower prices, and long-term returns are diluted as a result.Even missing a handful of strong recovery sessions, when markets rebound sharply, can have a disproportionate impact on overall performance. These recovery phases are often clustered and difficult to predict, making precise timing nearly impossible.Various studies, such as ones done by JP Morgan Asset Management show that investors who stay invested tend to outperform those who attempt to time the market. Their analysis highlighted that missing just a handful of the market’s best-performing days, often clustered around periods of sharp declines, can significantly reduce long-term returns.Rajni Kant Mishra, Founder and Chairman, Amrawati Group, bringing a perspective from the real estate sector where investment cycles are long and sentiment-driven, also told TOI, “Patience has always proven effective when compared to market timing.”Thus, to reiterate, in SIP investing, the biggest risk is not volatility, it is the knee-jerk reaction triggered by panic without thinking.

When should you actually worry?

The idea that investors should “do nothing” during volatility is often misunderstood. It does not imply ignoring risk altogether, it means distinguishing between noise and signal.Short-term market swings triggered by events such as geopolitical conflict tend to fall into the category of temporary volatility. They are sharp, sentiment-driven, and often reverse as uncertainty fades.Structural risks, however, are different. These include sustained economic slowdowns, prolonged earnings deterioration, or fundamental shifts in growth trajectories.For investors, the discipline lies in telling the two apart.As Nirav Karkera, Head of Research at wealth-tech firm Fisdom told TOI, “Geopolitical shocks should first be assessed through their transmission into fundamentals rather than price action. Short-term volatility is typically liquidity- and sentiment-led… Structural risk, on the other hand, reflects in sustained earnings downgrades, widening credit spreads, currency instability, or lasting shifts in supply chains and capital flows.”In the current context, while war-driven uncertainty has unsettled markets, it does not automatically translate into a long-term impairment of economic fundamentals. That distinction is critical.Where action is warranted is at the portfolio level. If financial goals have changed, if risk tolerance was overestimated, or if asset allocation has become imbalanced, then recalibration is justified. But that is a strategic adjustment, not a reaction to short-term volatility. The BankBazaar CEO Adhil Shetty offered his opinion for investors to analyse.

SIPs as a behavioural tool

Much of the value of SIPs lies beyond returns, it lies in behaviour.By design, a Systematic Investment Plan reduces the number of decisions an investor has to make. Investments happen automatically, regardless of market conditions. This limits the scope for emotional interference, which is often the biggest source of error in investing.In volatile environments, this structure becomes even more valuable. Instead of repeatedly asking whether it is the “right time” to invest, the SIP framework removes that question altogether.Rohit Shah, financial planner, in his advice to investors who worry.

The investor participates in the market without needing to predict it.In a landscape where timing decisions are both difficult and costly, this automation acts as a form of behavioural discipline; ensuring consistency when it is hardest to maintain.

The counterintuitive strategy

One of the central challenges of investing is that the optimal strategy often feels uncomfortable in the heat of the moment.When markets are rising, confidence is high and investing feels intuitive. When markets fall, uncertainty rises and investing feels risky.Yet from a long-term perspective, the relationship works in reverse.Higher market levels imply lower future return potential, while lower entry points improve long-term outcomes. This creates a fundamental paradox: the moments that feel safest to invest are often the least attractive financially, and vice versa.SIPs help resolve this contradiction. By enforcing consistency across cycles, they ensure that investors continue allocating capital in both favourable and unfavourable conditions, without relying on sentiment.Ravikant, Founder, Elegance Enterprises & Elegance Infra, a real estate advisory and property development firm, bringing a perspective from a sector where investment decisions are often shaped by long cycles and market sentiment, told TOI, on the relevance of SIP-investing in volatile markets.

Simple frameworks like maintaining asset allocation, continuing SIPs and periodic portfolio reviews help investors stay anchored when emotions run high. From a real estate perspective, we often see that such phases don’t weaken intent they make decision-making more measured, with investors focusing on long-term value rather than reacting to short-term headlines.

Ravikant, Founder, Elegance Enterprises & Elegance Infra

War, uncertainty, and the long view

Geopolitical conflicts are a recurring feature of global markets. Their immediate impact is almost always the same: heightened volatility, risk aversion, and sharp price reactions.But over longer horizons, markets tend to be shaped by deeper forces such as economic growth, corporate earnings, and innovation.Conflicts can disrupt these drivers in the short term, particularly through channels like energy prices or trade flows. However, they rarely alter the long-term trajectory of markets in a permanent way.For long-term investors, this distinction is essential.A SIP is not built to navigate short-term stability. It is built on the premise that, despite periodic disruptions, markets trend upward over time.Staying invested through uncertainty is not a passive choice; it is a deliberate strategy aligned with how markets have historically evolved.

Stay, pause, or exit?

What should retail investors do when markets turn volatile due to war and global uncertainty?Rohit Shah, financial planner, talked to TOI on his advice for investors. “First, assess your own context, not the headline risk. If you need liquidity for key goals or life transitions in the next 2–3 years, review your asset allocation and ensure adequate safer assets for those needs.” “A well-constructed multi–asset portfolio already provides “shock absorbers” via fixed income, precious metals and global equity. In many cases, conflict-driven volatility is temporary and better handled through disciplined, opportunistic rebalancing—booking some profits where valuations are rich and adding to relatively undervalued, long-term assets—rather than changing SIPs in panic,” he added.For most long-term investors, the answer lies in understanding the design of SIPs.Sandesh Sharda, Founder, Golden Yug & Gro More Portfolio LLC, had some advice that he shared with TOI.

A shift in SIP strategy should only be considered if the conflict meaningfully changes the investor’s own situation or the long-term market outlook — for example, sustained inflation, a sharp and lasting rise in oil prices, higher interest rates, currency pressure, or a direct impact on corporate earnings.

Sandesh Sharda, Founder, Golden Yug & Gro More Portfolio LLC

Thus, to simplify, continuing to invest aligns with the core principle of disciplined, time-based allocation. It allows investors to benefit from lower prices during downturns and participate in eventual recoveries.Pausing, on the other hand, is rarely a strategic decision. It is typically driven by discomfort with short-term losses. But stepping back during periods of decline interrupts the very mechanism that makes SIPs effective, which is consistent accumulation across market cycles.Exiting altogether carries the highest cost. It not only locks in losses during periods of stress but also creates the risk of missing the recovery phase, which is often sharp and difficult to anticipate.The weight of evidence, from market data to behavioural insights, points in a consistent direction. Investors who remain invested through volatility tend to achieve better long-term outcomes than those who attempt to time their entry and exit.In that sense, the decision is less about predicting markets and more about maintaining discipline.Because in volatile times, the real test of investing is not identifying the perfect moment to act, but having the conviction to stay invested when it feels hardest.(Disclaimer: Recommendations and views on the stock market, other asset classes or personal finance management tips given by experts are their own. These opinions do not represent the views of The Times of India. Investors should consult a qualified financial adviser before making decisions.)