WebNotes

Sensibull (options analytics platform)

From WebNotes, a public knowledge base. Last updated . Reading time ~14 min.

Sensibull is an options analytics and strategy-building platform accessible at sensibull.com, developed by Sensibull Technologies Private Limited and integrated with Zerodha’s Kite platform via the Kite Connect API. Sensibull provides retail and semi-professional options traders with tools for analysing the NSE options market: option chain visualisation with real-time data, payoff diagram construction for multi-leg strategies, implied volatility (IV) surface analysis, Greeks computation, options strategy comparison, and position management analytics.

The platform is accessible within the Kite interface via the Option Chain link and as a standalone web application at sensibull.com. Multi-broker support was added in subsequent versions, allowing clients of Upstox, Angel One, HDFC Securities, and other brokers to use Sensibull, though the tightest integration remains with Zerodha.

Sensibull was among the first Indian retail-facing platforms to present options analytics in a format comparable to the tools historically available on institutional desks. Retail traders participating in NSE index and stock options had previously relied on the exchange’s own option chain (on nseindia.com) and on spreadsheet-based calculations for Greeks and payoff analysis. Sensibull’s integration of real-time data, automatic Greeks computation, and payoff visualisation reduced the information gap between institutional and retail participants.

History and background

Sensibull was founded by Abhijit Phatak, a derivatives trader with experience in institutional options trading, and launched as a public platform in 2018. Zerodha invested in Sensibull and integrated it as a partner within the Kite platform, placing the Kite Option Chain link (which opens Sensibull) directly in Kite’s navigation. The partnership was announced in a Z-Connect blog post that described Sensibull as a tool designed to reduce the analytical disadvantage faced by retail options traders.

The motivation for Sensibull’s founding, as stated by its founders in public interviews, was the observation that retail traders participating in NSE options were making decisions based on incomplete or incorrectly interpreted data. Common errors included treating high open interest at a strike as a hard support or resistance level (ignoring that OI reflects the position of options sellers, not necessarily a price floor or ceiling), buying far out-of-the-money options without understanding the theta decay embedded in the premium, and constructing strategies without mapping the full payoff profile.

Sensibull’s design addresses these gaps by making the necessary analytics computational rather than manual: traders see the payoff at expiry automatically, they see the Greeks of each leg and the combined strategy, and they see the current IV percentile relative to the instrument’s history.

Following Zerodha’s investment, Sensibull expanded its content offering with educational articles and videos on options concepts and strategies, building a community of options traders who engage with the platform beyond its analytical tools.

Features

Option chain

Sensibull’s option chain view is the primary market data interface. For a selected underlying (NSE indices such as Nifty 50, Bank Nifty, Fin Nifty, or individual NSE stocks) and expiry, the chain presents:

Open interest visualisation: A bar chart below or beside the option chain shows open interest by strike for calls and puts, commonly used by traders to identify “OI walls” where large concentrations of written options may create support or resistance at specific price levels. This interpretation is heuristic and not guaranteed to produce accurate price level predictions.

Change in OI: The incremental change in open interest from the previous settlement, indicating new positions built or old positions unwound during the session.

IV display: The implied volatility for each option is computed from the last traded price (or bid-ask midpoint) using a Black-Scholes-Merton model inversion, with the risk-free rate sourced from short-term government securities yields or overnight MIBOR, and time to expiry calculated to the minute.

Real-time data in the option chain is sourced from Kite Connect’s WebSocket feed. The chain updates at the exchange’s data dissemination rate.

Strategy builder (payoff charts)

Sensibull’s strategy builder allows construction of multi-leg options positions. A leg is added by selecting option type (call or put), transaction type (buy or sell), expiry, strike, and quantity. The strategy builder supports:

For each completed strategy, the builder computes and displays:

Payoff at expiry: A line chart showing the net profit or loss at expiry as a function of the underlying price at expiry, across a range from the current price. The breakeven points (where the payoff line crosses zero) are explicitly marked.

Breakeven prices: The exact underlying price at which the strategy produces zero P&L at expiry.

Maximum profit and maximum loss: For strategies with defined risk (iron condor, vertical spreads), these are shown as explicit numbers. For strategies with theoretically unlimited risk (naked short call, for example), the maximum loss is shown as “unlimited.”

Current P&L: The strategy’s current mark-to-market P&L based on the current market prices of all legs.

Greeks of the combined position: Net delta, net gamma, net theta, net vega for the strategy as a whole. Net theta tells the trader whether the strategy is time-positive (profits from time decay, as in an iron condor or covered call) or time-negative (loses from time decay, as in a long straddle). Net vega indicates the strategy’s sensitivity to implied volatility changes.

Margin required: The estimated margin required to enter the strategy in a live trading account, computed using the exchange’s SPAN + exposure margining framework applied to the combined position.

Pre-built strategy templates: Sensibull provides one-click templates for common strategies: long call, long put, bull call spread, bear put spread, iron condor, iron butterfly, long straddle, long strangle, short straddle, short strangle, ratio spread, covered call, and others. Selecting a template populates the leg definitions; the client adjusts strikes, expiries, and quantities to their preference.

Implied volatility analysis

IV percentile and IV rank: These metrics contextualise the current IV level:

High IV percentile and rank are associated with expensive options (selling strategies may be favoured); low IV percentile and rank with cheap options (buying strategies may be favoured). Both metrics are informational rather than deterministic trade signals.

IV surface: A three-dimensional visualisation of IV across strikes (showing the volatility smile or skew) and expiries (showing the term structure of volatility). The NSE options market typically exhibits a negative volatility skew for index options (puts have higher IV than equidistant calls), consistent with demand for downside protection. Sensibull’s IV surface visualisation allows traders to identify deviations from typical skew patterns that may represent relative value opportunities.

Historical volatility comparison: Sensibull compares current IV against the underlying’s realised historical volatility (computed as the annualised standard deviation of daily log-returns over a specified period). When IV significantly exceeds historical volatility, options are more expensive than would be implied by past price movement; when IV is below historical volatility, options are cheaper.

Options strategy comparison

The strategy comparison module displays multiple strategies for the same underlying in a single view, showing for each: the payoff diagram, the net premium (net credit or debit), the maximum profit, the maximum loss, the breakeven points, and the margin required. This enables side-by-side evaluation of, for example, a bull call spread versus a cash-secured put versus a covered call when the trader has a moderately bullish view.

Scenario analysis

Scenario analysis models the value of an open or proposed options position under assumed changes in the underlying price, implied volatility, and time to expiry. A common use case is: “If the underlying falls 5% and IV increases 10% with ten days remaining to expiry, what is the P&L of my iron condor?” The scenario tool computes this by applying the Black-Scholes-Merton model with the adjusted inputs.

Live position analytics

For traders with a connected Zerodha account, Sensibull displays their current open options positions sourced from Kite Connect’s positions endpoint. The combined portfolio is displayed as:

This portfolio-level analytics view allows traders managing multiple options strategies across different instruments and expiries to see their aggregate risk profile in a single display.

Order placement

Multi-leg strategies constructed in Sensibull’s strategy builder are placed as basket orders via Kite Connect into the trader’s Zerodha account. Individual legs execute as separate exchange orders on NSE. The basket is submitted simultaneously; while exchange matching is not guaranteed to be simultaneous for all legs, the near-simultaneous submission minimises leg-execution risk relative to manually entering each leg sequentially.

Technical architecture

Sensibull’s back end processes real-time option chain data from Kite Connect’s WebSocket market data feed. For the NSE options market, this involves subscribing to the full-mode feed for all active strikes across multiple expiries for each underlying, which is a large data volume during high-activity sessions.

Implied volatility computation runs on Sensibull’s servers using a Black-Scholes-Merton (for European-style options; NSE’s European-exercise index options and American-exercise stock options require appropriate model selection) inversion on the mid-price of each option. Greeks are computed from the same model with the current underlying price, IV, risk-free rate, and time to expiry.

Sensibull’s web application communicates with its back end via REST and WebSocket. The platform is browser-based; a standalone mobile application for Android was available in certain periods.

Regulatory considerations

Options trading on NSE is governed by SEBI’s framework for exchange-traded derivatives. Sensibull’s order placement function routes through Zerodha’s OMS and Kite Connect, maintaining the required broker intermediation. Sensibull does not hold a stockbroker SEBI registration; it is a technology platform accessing a registered broker (Zerodha) for execution services.

SEBI’s Investment Advisers Regulations (2013) require personalised investment advice to be provided only by registered investment advisers. Sensibull’s strategy tools are designed as analytical utilities: they present payoff diagrams, Greeks, and risk metrics without recommending specific positions to specific clients. Sensibull’s educational content is general-purpose; personalised recommendations require a SEBI-registered adviser.

Comparison with competitors

Options analytics platforms in the Indian retail market as of 2024:

Opstra (by Definedge): Offers option chain analysis, IV analysis, strategy builder, and multi-broker execution. Competing directly with Sensibull in functionality depth. Available to traders across multiple brokers.

NSE’s own option chain (nseindia.com): Provides raw option chain data without payoff visualisation, Greeks, or IV analysis. The baseline reference that Sensibull significantly enhances.

Broker-native option chains: Upstox, Angel One, ICICI Direct, and HDFC Securities all offer option chains within their platforms; most display basic LTP, OI, and volume without the payoff diagram and IV analysis depth of Sensibull.

AlgoTest: More focused on systematic options strategy backtesting and live execution; less focused on real-time analytical tools for discretionary traders.

TradingView’s options analytics (limited for NSE): TradingView offers options chain functionality on its US-equity-focused platform; NSE options data coverage on TradingView was limited as of 2024.

Sensibull’s primary competitive advantage is the combination of deep real-time data (via Kite Connect’s full-mode WebSocket feed), integrated IV analytics, and seamless order placement into Zerodha’s account, all within a single authenticated browser session. Its position as the embedded option chain tool within Kite gives it a structural user-acquisition advantage that standalone analytics platforms lack.

The Indian options market context

Sensibull’s rise as a platform tracks the extraordinary growth of the Indian equity derivatives market in the 2015-2024 period. NSE’s Nifty 50 weekly and monthly options contracts, and later the Bank Nifty, Nifty Financial Services, and Sensex options contracts on BSE, attracted millions of retail participants. India’s equity options market became one of the largest in the world by number of contracts traded, driven predominantly by retail participation in index options.

This growth created a large market for options analytics tools: as more retail traders transitioned from equity cash market trading to options strategies, demand for tools that visualised the payoff profile, tracked Greeks, and displayed IV trends grew substantially. Sensibull was well-positioned to serve this demand as a platform purpose-built for the Indian options market’s specific instruments (NSE and BSE listed contracts, INR-denominated) with data sourced directly from exchange feeds.

SEBI’s 2024 measures to moderate retail derivatives participation (increases in contract lot sizes, changes to weekly expiry structures that reduced the number of weekly expiry contracts available simultaneously) affected the volume of options activity on which Sensibull’s user base was active. The platform’s analytics remain relevant regardless of market volume, but the contraction of retail options activity that followed SEBI’s 2024 measures had a structural impact on the addressable market for retail options analytics tools.

Educational content and options literacy

Sensibull publishes educational content on options trading mechanics on its platform and through associated channels, complementing Zerodha Varsity’s modules on options theory and strategies. This content covers topics such as understanding option Greeks in practice, selecting strike prices for different strategy objectives, and managing positions through expiry, practical applications of the theoretical concepts covered in Varsity.

The educational content serves a dual function: introducing options trading to investors who have not previously traded derivatives, and improving the trading outcomes of existing options traders who use Sensibull’s analytics. Better-informed traders are more likely to use the platform’s advanced features (IV surface, scenario analysis) and to trade with strategies that have positive expected value, which is consistent with Sensibull’s positioning as a tool that helps traders make better decisions.

See also

References

  1. Sensibull. “Sensibull, options analytics platform”. sensibull.com. Accessed May 2026.
  2. Zerodha Z-Connect Blog. “Introducing Sensibull, options made easy”. z-connect.zerodha.com. 2018.
  3. SEBI. “SEBI (Investment Advisers) Regulations, 2013”. sebi.gov.in. Accessed May 2026.
  4. NSE. “Equity derivatives, option chain”. nseindia.com. Accessed May 2026.
  5. NSE. “Futures and options contract specifications”. nseindia.com. Accessed May 2026.

Reviewed and published by

WebNotes Editorial Team

The WebNotes Editorial Team covers Indian capital markets, payments infrastructure and retail investor procedures. Every article is fact-checked against primary sources, principally SEBI circulars and master directions, NPCI specifications and the official support documentation published by the intermediary in question. Drafts go through a second-pair-of-eyes review and a separate compliance read before publication, and revisions are tracked against the SEBI and NPCI rule changes referenced in the methodology section.

Last reviewed
Conflicts of interest
WebNotes is independent. No relationship with any broker, registrar or bank named in this article.