Most ETF educational material focuses on the benefits. This page focuses on a real and underappreciated risk: what happens when you invest in an ETF that almost nobody trades. The consequences range from overpaying on entry to being unable to exit at a fair price.
Explore India's ETF Directory →Before listing the risks, it is important to state that low exchange volume alone is not necessarily a red flag for an ETF. The underlying liquidity of the portfolio matters far more than the on-screen daily traded volume.
A Nifty 50 ETF that trades only ₹5 Cr per day on NSE is still backed by a portfolio of the 50 most liquid stocks in India. An Authorized Participant can easily assemble or disassemble a creation basket worth ₹50 Cr in minutes. So even if few people trade the ETF on the exchange, any serious mispricing would be instantly arbitraged away.
The genuine risks arise when both the ETF's exchange liquidity AND its underlying portfolio liquidity are low — or when the number of active APs providing market-making support drops to zero or one.
Major AP names in India (examples): ICICI Securities, HDFC Securities, Kotak Securities, SBI Capital Markets, JM Financial, Nuvama, Motilal Oswal, IIFL, Jane Street (through its registered entities), Goldman Sachs (India) Securities, Morgan Stanley India and Nomura India are commonly seen in ETF market-making/AP ecosystems. If a niche ETF has none of these (or just one AP), liquidity risk can rise meaningfully. Always verify current AP names in the latest AMC disclosures.
Turnover note: AP-wise yearly turnover is usually not publicly available. What you can verify publicly is ETF-level traded value and volume on NSE/BSE.
The two-layer test: Always evaluate (1) How liquid are the underlying stocks/assets? and (2) How many APs are actively quoting this ETF? If both answers are "not very", proceed with extreme caution or choose an alternative.
The most insidious risk of a low-liquidity ETF is that you can pay significantly more than the ETF is actually worth. Consider this scenario:
This premium can persist because the underlying stocks in the sectoral ETF may themselves be illiquid enough that assembling a creation basket is expensive and risky for APs. The cost of arbitrage exceeds the benefit, so the premium is never closed.
⚠️ Rule of thumb: Before placing any buy order on an ETF in India, compare the market price to the day's iNAV (available on the NSE website under the ETF's listing page → "Indicative NAV"). If the market price is more than 0.25% above iNAV for a domestic equity ETF, or more than 0.50% for a sectoral ETF, place a limit order at or near the iNAV rather than hitting the prevailing ask price.
On a ₹1 lakh investment, a 2% round-trip spread cost is ₹2,000. For a Nifty 50 ETF it's ₹40–80. This difference compounds over multiple trades and explains why active traders should stick exclusively to the most liquid ETFs.
A well-funded, liquid ETF can replicate an index with a tracking error of 0.02–0.10% per year. A low-liquidity ETF faces several handicaps that amplify tracking error:
1. Rebalancing impact cost: When the index adds or removes a constituent, the ETF must buy or sell that stock. For small-cap stocks in a thematic ETF, the ETF's own trades may move the stock price against it — it pays more to buy and gets less when selling compared to the theoretical rebalancing price.
2. Cash drag: Low-volume ETFs may accumulate more dividend cash in the fund before they can efficiently reinvest it (because reinvesting large cash amounts in illiquid stocks causes further impact cost). This cash earns a lower return than the index, creating drag.
3. Partial replication: For highly illiquid indices (e.g., a 50-stock index of very small companies), the ETF manager might deliberately hold only 30–40 stocks that are liquid enough to trade — using sampling optimization. This means the ETF does not hold the full index, and its returns will differ in unpredictable ways.
Consider an investor who has accumulated ₹25 lakh in a thematic ETF that trades only ₹40–50 lakh per day in total on NSE. This investor wants to exit. Their options are:
| Exit Option | Feasibility | Cost | Time |
|---|---|---|---|
| Market sell order (immediate) | Very poor — you'll hit every ask below the current bid | 2–5% loss vs iNAV | Instant but terrible price |
| Limit order at NAV | May take days | 0–0.5% below NAV | 3–10 trading days |
| Gradual exit over weeks | Feasible | Close to NAV | 2–4 weeks |
| Direct redemption with AMC | Retail investors cannot — APs only | N/A | N/A |
| Switch to similar mutual fund | Not possible — no direct switching | N/A | N/A |
This illustrates why position sizing matters. Never invest so much in a low-liquidity ETF that you cannot exit gracefully. A general rule: your holding should be exitable within 5–10 trading days at no more than 0.3% discount to NAV. If the daily volume cannot support this, the position is too large.