What is an Arbitrage Fund?
An Arbitrage Fund exploits price differences between the cash market (spot) and the futures market of the same stock. The fund simultaneously buys a stock in the cash market and sells it in the futures market at a higher price, locking in a near-riskless spread.
The key insight: futures prices converge to spot prices at expiry. Arbitrage funds profit from this convergence. Because the trade is fully hedged (buy spot, sell futures), the fund carries near-zero directional equity risk — yet qualifies as an equity fund for taxation since it holds >65% in equities (including derivatives).
Stock trades at ₹1,000 in the cash market. Futures price for next month: ₹1,012. Fund buys cash at ₹1,000 and sells futures at ₹1,012. At expiry, both converge. Profit locked: ₹12 (~1.2% in ~30 days = ~14.4% annualised before costs). Real-world returns after costs: 6–7.5% p.a.
Fund Profile: Arbitrage Funds
| Parameter | Details |
|---|---|
| SEBI Category | Hybrid — Arbitrage Fund |
| Min. Equity/Derivatives | ≥ 65% in arbitrage positions |
| Risk Level | Very Low (Riskometer: Low to Moderate) |
| Ideal Holding Period | 3 months – 1 year |
| Tax Treatment | Equity fund (STCG 20% <1yr, LTCG 12.5% >1yr above ₹1.25L) |
| Exit Load | 0.25%–0.50% if redeemed within 30 days (varies by fund) |
| Benchmark | Nifty 50 Arbitrage Index |
Arbitrage Fund — AUM Trend
| Period | Category AUM | No. of Funds | YoY Change |
|---|---|---|---|
| Mar 2022 | ₹65,000 Cr | 26 | — |
| Mar 2023 | ₹78,200 Cr | 27 | +20.3% |
| Mar 2024 | ₹1,02,400 Cr | 27 | +31.0% |
| Mar 2025 | ₹1,18,600 Cr | 28 | +15.8% |
| Jun 2026* | ₹1,21,000 Cr | 29 | +2.0% (YTD) |
*Indicative estimate. AUM surged with rate cycle — arbitrage spreads widen in high-rate environments.
Asset Allocation
SEBI mandates arbitrage funds to maintain at least 65% in equity arbitrage (cash-futures). The remaining can be parked in short-duration debt for liquidity management.
| Component | Typical Allocation | Purpose |
|---|---|---|
| Equity — Cash Market (Hedged) | 65–80% | Arbitrage positions |
| Equity Derivatives (Short Futures) | Mirrors cash holding | Hedge against price risk |
| Short-Duration Debt / Liquid | 20–35% | Margin, liquidity management |
Trailing Returns — Arbitrage Fund Category
| Period | Category Avg. | Best Fund | Worst Fund | FD (1yr equiv.) |
|---|---|---|---|---|
| 1 Month | 0.55% | 0.62% | 0.48% | 0.58% |
| 3 Month | 1.68% | 1.82% | 1.51% | 1.73% |
| 6 Month | 3.42% | 3.61% | 3.18% | 3.46% |
| 1 Year | 6.95% | 7.48% | 6.32% | 6.80% |
| 3 Year | 6.12% | 6.54% | 5.71% | 6.50% |
Calendar Year Returns
| Calendar Year | Avg. Return | Liquid Fund Avg. | FD (1yr) |
|---|---|---|---|
| 2021 | 3.8% | 3.5% | 5.0% |
| 2022 | 4.2% | 4.0% | 5.5% |
| 2023 | 7.1% | 6.8% | 6.9% |
| 2024 | 7.4% | 7.0% | 7.0% |
| 2025 | 6.9% | 6.5% | 6.8% |
Rolling Returns (3-Year Window)
Rolling returns assess consistency — how the fund performed over every possible 3-year window in the past decade.
| Metric | Arbitrage Fund Category | Liquid Fund Category |
|---|---|---|
| Min. 3-Year Return | 3.4% | 3.2% |
| Max. 3-Year Return | 7.6% | 7.1% |
| Median 3-Year Return | 6.1% | 5.8% |
| % of periods >5% | 74% | 68% |
Category Fund Inflows / Outflows
| Quarter | Gross Inflow | Gross Outflow | Net Flow |
|---|---|---|---|
| Q1 FY26 | ₹38,400 Cr | ₹35,200 Cr | +₹3,200 Cr |
| Q2 FY26 | ₹42,100 Cr | ₹39,800 Cr | +₹2,300 Cr |
| Q3 FY26 | ₹44,600 Cr | ₹41,200 Cr | +₹3,400 Cr |
| Q4 FY26 | ₹46,200 Cr | ₹44,100 Cr | +₹2,100 Cr |
The Taxation Twist: Arbitrage vs Liquid Fund
This is the core reason why sophisticated investors use arbitrage funds for short-term parking. Both carry similar risk, but the after-tax outcome can differ significantly:
| Parameter | Arbitrage Fund | Liquid Fund |
|---|---|---|
| Pre-tax Return (1 yr) | 6.9% | 6.5% |
| Tax (30% slab, <1yr) | 20% STCG | 30% income slab |
| Post-tax Return (30% slab) | 5.52% | 4.55% |
| Tax (10% slab, <1yr) | 20% STCG | 10% |
| Post-tax Return (10% slab) | 5.52% | 5.85% |
| Best for | 30% slab taxpayers | 10–20% slab taxpayers |
| Holding >1 year | 12.5% LTCG (above ₹1.25L gains) | Income slab |
If you're in the 30% income tax bracket and need to park money for 3–12 months, arbitrage funds typically deliver better post-tax returns than liquid funds or FDs. For holding beyond 1 year, the LTCG advantage becomes very compelling.