Spot Price
The live, right-now price of an asset in the cash market — the anchor from which every futures and options contract derives its value.
Definition
The spot price is the current prevailing market price at which an asset can be bought or sold for immediate delivery and settlement. In the context of Indian equity derivatives, the spot price of an index such as Nifty 50 or Bank Nifty is the live computed index value based on the last traded prices of its constituent stocks on NSE. For individual equities, the spot price is simply the last traded price (LTP) in the cash segment. Every futures contract and options premium ultimately traces back to the spot price of the underlying.
Why it matters
In F&O trading, the spot price plays three distinct roles. First, it determines moneyness: whether a given strike is in-the-money, at-the-money, or out-of-the-money is always relative to the current spot. Second, it anchors the fair value of futures through the cost-of-carry relationship — futures trade at a premium or discount to spot depending on prevailing interest rates and expected dividends. Third, at expiry all index options on NSE settle against the Special Opening Quotation (SOQ) — a volume-weighted average of the spot index computed in the final 30 minutes of trading. This means a position's profit or loss is ultimately determined by where spot lands at that settlement print, not where futures traded. Tracking spot versus futures premium (basis) tells traders whether institutional positioning is net long or net short relative to the underlying.
How it works
For NSE indices, the spot value is recalculated in real time throughout the continuous trading session (9:15 AM–3:30 PM IST) as constituent stock trades print on the exchange. The index divisor — a normalisation factor maintained by NSE — ensures that index-level changes reflect only price movements, not corporate actions like splits or bonuses. During pre-open (9:00–9:15 AM) the spot is determined by a call auction mechanism. After market hours, the spot price freezes at the closing value, which is itself the weighted average price of the last 30 minutes of cash-market trading. Derivatives writers such as option sellers closely watch spot relative to their short strikes; a rapid spot move is what triggers gamma risk and accelerates delta changes across the option chain.
Example
Suppose Nifty's spot index reads 23,850 at 11:30 AM on a Wednesday. The near-month Nifty futures contract might be quoting at 23,880 — a premium of 30 points, reflecting roughly two days of cost of carry before the Thursday expiry. The 24,000 CE is out-of-the-money because the strike (24,000) is above the spot (23,850). If spot rallies sharply to 24,050 by 1:00 PM, the 24,000 CE crosses into in-the-money territory, its delta jumps, and its premium expands rapidly. Conversely, the 24,000 PE shifts from in-the-money to out-of-the-money and its premium collapses. Every re-pricing across the entire option chain is triggered by this spot-price movement — illustrating why monitoring live spot is the primary input in real-time options analysis.
Track live spot alongside the full option chain
TradePulse displays the live Nifty and Bank Nifty spot values, futures premium, and basis so you always know where options are anchored.