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A two-leg options position that recreates the exact payoff of owning the underlying outright — for a fraction of the capital, and with a genuinely simple, straight-line payoff unlike every other strategy on this site.

A Synthetic Long Stock combines buying one call and selling one put, at the same strike (typically at-the-money) and the same expiry. This combination replicates owning the underlying itself almost exactly: your profit rises point-for-point as the underlying rises, and falls point-for-point as it falls — the same linear relationship a real shareholding has, achieved with a small options position instead of buying the full underlying.

The long call gives unlimited upside, the same as owning the underlying. The short put is what makes it "synthetic" rather than just a Long Call — it removes the premium cushion a plain call has, replacing it with real downside exposure that mirrors what an actual shareholding would experience. Together, they cancel out the option-specific kinks and leave a plain, straight-line payoff.

This is the simplest payoff shape covered on this site — genuinely different from every zone-based or capped strategy explained elsewhere here. There's no flat zone, no cap, and no kink at any strike: the position's value moves in an unbroken straight line with the underlying, for every possible price at expiry. A move up by X points is a gain of roughly X points (adjusted for the small net premium paid or received); a move down by X points is a loss of roughly X points, all the way down.

This is a direct, mechanical consequence of options math known as put-call parity: a long call and a short put at the same strike combine to exactly cancel out their individual kinks, leaving only the linear relationship both had a share of — the same one the underlying itself has.

A Synthetic Long Stock position fits situations where you want direct, linear exposure to the underlying without buying it outright — most commonly to free up capital, since the amount tied up is far smaller than the underlying's full value, while the directional exposure is nearly the same. It's also used when a trader already has a view expressed elsewhere in options and wants a clean, simple way to add plain directional exposure alongside it, without introducing the capped or zone-based behavior every other strategy on this site has.

Suppose Nifty is trading at 24,000 with a weekly expiry coming up, and lot size is 65. You want direct upside exposure without buying the full underlying.

1. Confirm the setup. You want Nifty exposure that behaves like actually holding it.
2. Buy 1 call at the 24,000 strike (at-the-money) for a premium of 145.
3. Sell 1 put at the same 24,000 strike, collecting a premium of 140.
4. Calculate the net cost: 145 − 140 = 5 points, or ₹325 at this lot size — a small amount compared to the underlying's actual value, since the call and put premiums mostly offset each other.
5. Calculate the breakeven: 24,000 + 5 = 24,005.
6. Understand the shape: above 24,005, every further point of Nifty gain is a further point of profit, with no cap. Below it, every point of Nifty fall is a further point of loss, all the way down.
7. See how it resolves at expiry:
   • Nifty finishes at 25,000 → profit is roughly (25,000−24,005) × 65 = ₹64,675.
   • Nifty finishes at 24,005 → you exactly break even.
   • Nifty finishes at 23,000 → loss is roughly (24,005−23,000) × 65 = ₹65,325.

Quick reference for the same trade:

Based on the worked example above. Notice this is a single straight line with no kinks anywhere — unlike every capped or zone-based strategy elsewhere on this site. Move the cursor over the chart to see profit/loss at any price.

• This is genuinely undefined risk, just like holding the underlying itself. There is no cap on the loss (aside from the underlying theoretically falling to zero) — it behaves exactly like ordinary share ownership in this respect, not like a typical defined-risk options strategy.
• Margin requirements reflect the short put's obligation and are generally substantial, since the position carries the same downside exposure real ownership would.
• Dividends and financing costs create small, real differences from actually owning the underlying, even though the payoff shape is nearly identical — for index options this is usually a minor effect, but it's not exactly zero.
• Index options on NSE are typically European-style and cash-settled — no early-assignment risk on the short put leg.