Market moves and mechanics
The Indian rupee's advance on Monday lost momentum as corporate players entered arbitrage trades between the onshore spot market and the non-deliverable forward (NDF) market, taking advantage of a dislocation created by the central bank's recent tightening of banks' foreign-exchange positions. The Reserve Bank of India imposed new limits on onshore positions of banks late on Friday, a step that forced lenders to sell dollars into the domestic market while buying in the NDF market.
Market participants estimate the size of the positions affected by the central bank's action to be between $25 billion and $35 billion. That scale of rebalancing pushed the onshore dollar/rupee rate to quote well below the NDF rate, creating a wide arbitrage opportunity that corporates rushed to exploit.
Corporate response and impact on the rupee
Companies bought dollars in the onshore market and sold dollars in the NDF market to capture the spread, a flow that checked the rupee's rally and produced uneven price action across trading segments. Heavy importer demand from large corporates seeking to hedge near-term liabilities compounded the effect, prompting the currency to give back a substantial portion of its early gains.
At the opening, the rupee had jumped by more than 1% to 93.60, but it later eased to trade at 94.72 per dollar, representing a gain of just 0.1% on the day.
Arbitrage dynamics and market quotes
The one-month NDF-onshore spread widened dramatically, at one point exploding to over 1 rupee before narrowing to roughly 40-50 paise. Even after this contraction, the spread remained far wider than typical levels. In recent months, that spread has usually sat in the 1-5 paise range, making the current differential notably attractive to corporate treasuries.
"If you a corporate, you absolutely want to take advantage of these once-in-a-decade opportunities. Yes, there’s mark-to-market risk, however that can be absorbed if you hold till maturity."
A banker at a private sector bank characterised the new arbitrage window as both lucrative and directly caused by the RBI's move to curb banks' arbitrage activity.
Traders described an early start to client activity. "Clients have been trading since 8:15 a.m. (IST)," an FX salesperson at a foreign bank said, adding that they had calls with clients over the weekend in preparation for this repricing in markets.
Key takeaways
- The RBI's limits on banks' onshore forex positions forced large-scale rebalancing across spot and NDF markets.
- Estimated positions affected range between $25 billion and $35 billion, producing a sizable onshore-NDF spread that corporates have moved to capture.
- Large corporates' arbitrage activity and importer hedging checked the rupee's early rally, producing uneven pricing across market segments.
Risks and uncertainties
- Mark-to-market risk for corporates engaging in the arbitrage if positions are not held to maturity - this affects corporate treasuries and balance-sheet risk management.
- Ongoing volatility and segmented pricing between onshore and NDF markets create execution and hedging uncertainty for importers and banks.
- The scale of positions being rebalanced - estimated at $25 billion to $35 billion - implies continued potential for market dislocation while flows unwind.