The Straddle Option Chain (Combined OC) combines Call and Put option data for each strike into a single row, while the regular Option Chain shows them separately.

Key Differences:

• Straddle OC: Shows combined metrics (Volume, OI, LTP) for both calls and puts together
• Regular OC: Displays calls and puts in separate columns
• Use Straddle OC when: You want to quickly identify high-activity strikes or analyze total market interest at each strike level
• Use Regular OC when: You need to compare call vs put activity side-by-side or analyze individual option contracts

• Vol: Total Volume (CE Volume + PE Volume)
• Vol Chg: Volume change from previous day
• Vol Chg %: Percentage change in volume from previous day
• LTP Chg: Change in Last Traded Price
• Comb LTP: Combined Last Traded Price (CE LTP + PE LTP)
• VWAP: Volume Weighted Average Price
• VWAP Chg: Change in VWAP (LTP - VWAP)
• LTP VWAP%: Percentage deviation of LTP from VWAP
• Avg IV: Average Implied Volatility (CE IV + PE IV) / 2
• Comb OI: Combined Open Interest (CE OI + PE OI)
• OI Diff: OI Difference (PE OI - CE OI). Positive = bullish, Negative = bearish
• OI PCR: Put-Call Ratio (Put OI / Call OI). >1.2 = bullish, <0.8 = bearish

Most common reasons:

• Market Hours: Options data is limited outside trading hours (9:15 AM - 3:30 PM IST)
• Weekends/Holidays: No trading = no fresh data
• New Strikes: Newly added strikes might not have active trading yet
• Low Activity: Some strikes may have zero volume or OI

Quick fixes: Try refreshing the page, check if markets are open, or select a more popular stock/symbol.

Click the Settings button in the top-right corner to open the settings modal. From there, you can:

• Toggle column visibility by checking/unchecking boxes
• Switch between displaying quantities in "Lots" or "Quantity"
• Adjust the number of strikes to display (Above/Below ATM)
• Hover over the info icons (ℹ️) next to column names for detailed explanations

Click the Historical button to expand the historical date navigation panel. You can:

• Select a specific date from the calendar
• Use Previous/Next buttons to navigate between trading days
• For subscribed users, select a specific time during the trading day
• Click Go Live to return to real-time data

The Straddle Option Chain helps identify key support/resistance levels and market sentiment:

• High Combined Volume: Indicates strong interest at that strike - potential support/resistance
• OI PCR > 1.2: Bullish sentiment (more put OI suggests downside protection)
• OI PCR < 0.8: Bearish sentiment (more call OI suggests upside protection)
• OI Diff Positive: More put OI than call OI - generally bullish
• LTP VWAP%: Shows if current price is above/below average - helps identify overbought/oversold conditions