New ETF Trading Rules Roll Out – What Investors Need to Know

Starting tomorrow, September 7, the way exchange‑traded funds (ETFs) move on Indian bourses will be a little different. The Securities and Exchange Board of India (SEBI) has issued a fresh set of trading rules that tighten the gap between an ETF’s market price and the value of the assets it actually holds.

At the heart of the change is a shift in the “base price” that the exchanges use to decide how far an ETF can swing in a day. Earlier, the base price was the net asset value (NAV) from two trading days ago – the so‑called T‑2 NAV. Now it will be the volume‑weighted average price (VWAP) of the ETF’s trades in the last 30 minutes of the previous session. In plain English, the price range for today will start from where the fund actually finished trading yesterday, not from a stale number that could be days old.

But the base price is only one piece of the puzzle. SEBI is also tailoring the daily price bands to the nature of the underlying asset. Equity and debt ETFs will begin the day with a 10 % band around the base price, which can stretch to 20 % in incremental steps. Each time the limit is tested, trading will pause for 15 minutes – a “cool‑off” meant to give the market a breather.

Gold and silver ETFs, on the other hand, will start with a tighter 6 % band, but because bullion prices can jump dramatically overseas while the Indian market is closed, the bands can expand in 3 % increments with no ceiling. This flexibility helps those funds catch up to a new fair value after a big overnight move.

Liquidity‑focused ETFs, which rarely see big price swings, will stay in a fixed 5 % band – the status quo.

Another noticeable tweak is the introduction of a pre‑open call auction for gold and silver ETFs. Much like equities, buy and sell orders will be collected before the market opens and matched at a single equilibrium price. The goal is a smoother opening price that reflects collective demand rather than a lone stray order.

Why does all this matter? Imagine an ETF whose NAV was Rs 100 on Monday evening. By Wednesday, the underlying market has surged and the fair value is now Rs 125. Under the old 20 % flat band, the ETF could only trade up to Rs 120, leaving it stuck below its true worth. The new rules, with a fresher base price and tighter, asset‑specific bands, aim to let the fund’s price chase its real value more closely.

Of course, the opposite problem can also arise. In thinly traded funds, even a few aggressive orders could push the price far away from the NAV. The new, narrower bands for most ETFs should curb that excess drift.

“Think of it as a better guardrail,” says Balkrishn Bagaria, founder of Sharpe Financials. “We’re not eliminating the possibility of premiums or discounts – those come from supply‑demand dynamics – but we’re making sure the guardrails are positioned where they actually matter.”

Investors should still do their homework. An ETF may still trade at a premium or discount to its iNAV (intraday NAV), especially if liquidity is low. Using limit orders and keeping an eye on the iNAV remains prudent.

These changes were originally slated for September 1, but SEBI pushed the rollout to September 7 to give exchanges a little extra time to fine‑tune their systems. This is only phase one. Come April 1, 2027, the base price will shift once more to the previous day’s closing NAV, once any operational hiccups are ironed out.

In short, the new framework should make ETF prices more responsive to market movements, especially for gold and silver funds, while still preserving the fundamental mechanics of premiums, discounts, costs and tax treatment. For the everyday investor, the key takeaways are: watch the iNAV, consider limit orders, and be aware that price swings should now be less erratic – but not entirely gone.