Highlights
- CAS rollout triggers temporary arbitrage fund NAV volatility
- Cash-futures price mismatch drives one-time NAV swings
- Experts expect NAV volatility to normalise in coming sessions
NSE Closing Auction Session: The implementation of the new Closing Auction Session (CAS) has led to temporary volatility in the net asset values (NAVs) of arbitrage funds, with one-time price dislocations emerging as the cash and futures markets adjust to the new mechanism, according to market experts.
As a result of changes in closing prices under the revised framework, arbitrage fund NAVs may witness short-term fluctuations. However, experts told ET Now that the volatility is technical in nature and should not be viewed as a reflection of the underlying fundamentals of the funds.
According to market participants, the price gaps between the cash and futures markets are expected to narrow as participation in the closing auction improves. They also expect the recent NAV movements to normalise over the coming trading sessions as the market adapts to the new process.
Experts further said the long-term impact on arbitrage strategies is likely to remain limited. The closing auction has been introduced to improve price discovery and bring Indian market practices closer to global standards.
Analysts advised investors not to read too much into the temporary NAV fluctuations, adding that the initial volatility is expected to ease as the new framework settles in.
What is the Closing Auction Session (CAS)?
During the auction, buy and sell orders are matched to arrive at a single equilibrium closing price, improving price discovery and aligning with global market practices.
- Arbitrage fund NAVs witnessed unusually sharp one-day moves after the introduction of the NSE’s CAS.
- Some arbitrage funds reported one-day NAV gains of around 0.4%-0.5%, significantly higher than their typical daily returns.
- The movement was driven by changes in market pricing mechanics rather than any change in the underlying portfolio or strategy.
Why did arbitrage fund NAVs become volatile?
- Arbitrage funds simultaneously hold long positions in the cash market and short positions in the futures market.
- On the first day of CAS, the cash market closing prices moved sharply in some stocks, while futures prices did not adjust by the same magnitude.
- This temporary mismatch between cash and futures prices resulted in mark-to-market gains or losses, which got reflected in the funds’ daily NAVs.
Why is this considered temporary?
- The volatility stems from the transition to a new market mechanism rather than a structural change in arbitrage opportunities.
- As participation in the closing auction increases and price discovery becomes more efficient, the gap between cash and futures markets is expected to narrow.
- Fund managers expect NAV movements to normalise over the next few trading sessions.
What does it mean for investors?
- The one-day jump in NAV should not be interpreted as a permanent increase in returns from arbitrage funds.
- Investors should focus on the long-term return profile of arbitrage funds rather than isolated daily NAV movements.
- Experts view the recent volatility as a technical accounting impact rather than a change in the risk-return characteristics of the category.
