F&O Insights for 28/03/25: Unusual Options Activity

Disclaimer: This content is for educational purposes only, based on data as of 1 PM IST on March 28, 2025. This is not financial advice. Trading involves risks. Always do your own analysis and manage risk before trading.

Welcome to this today’s F&O Insights! We’re breaking down Futures & Options (F&O) data to help you spot market trends, whether you’re just starting or sharpening your skills. This edition focuses on new expiries launched for 24 April 2025, giving you a fresh lens on trader moves.

Section 1: Understanding Stock Activity Through OI Changes

Here’s what’s moving in key stocks based on price changes and Open Interest (OI) shifts.

Underlying Price Change Call OI Chg Put OI Chg Call Explanation Put Explanation
BAJFINANCE 8926 -0.89% 1628 1297 Short Buildup Short Buildup
HDFCBANK 1815.35 -0.54% 2612 929 Short Buildup Short Buildup
HINDUNILVR 2262.45 0.78% 2106 1490 Long Buildup Long Buildup
INFY 1576.85 -1.67% 6121 2345 Short Buildup Short Buildup
ITC 409.4 -0.01% 2601 1144 Short Buildup Short Buildup
KOTAKBANK 2164.6 1.71% 3111 3158 Long Buildup Long Buildup
MARUTI 11523 -1.70% 6358 2468 Short Buildup Short Buildup
RELIANCE 1275 -0.22% 7821 5436 Short Buildup Short Buildup
SBIN 769.5 -0.39% 3989 2612 Short Buildup Short Buildup
TCS 3607.1 -1.21% 2568 2540 Short Buildup Short Buildup

What Do These Terms Mean?

  • Long Buildup: OI rises with price moving favorably—up for calls (bullish) or down for puts (bearish). Traders are buying options, expecting that direction.

  • Short Buildup: OI rises, but price moves against buyers—down for calls (bearish) or up for puts (bullish). Suggests option selling.

  • Short Covering: OI drops with price rising (for calls) or falling (for puts). Short sellers buy back options, fueling the move.

  • Long Unwinding: OI drops with price falling (for calls) or rising (for puts). Long holders exit, signaling doubt.

Quick Take: Widespread Short Buildup (e.g., MARUTI, TCS) with price drops suggests bearish sentiment—watch for support levels!

Section 2: Spotlight on High-Activity Options

These options show notable trading volume relative to OI, pointing to strikes traders are eyeing.

Contract Volume/OI Ratio Explanation VOLUME OI IV
BAJFINANCE 8800 PE 24 Apr 2025 2.47 Long Buildup 2561 1036 26.25
BAJFINANCE 9000 CE 24 Apr 2025 2.25 Long Buildup 5356 2381 24.85
HDFCBANK 1820 PE 24 Apr 2025 3.64 Long Buildup 5016 1379 19.13
HDFCBANK 1920 CE 24 Apr 2025 2.85 Long Buildup 3084 1082 18.65
HINDUNILVR 2300 CE 24 Apr 2025 3.27 Long Buildup 8296 2540 19.09
HINDUNILVR 2260 CE 24 Apr 2025 2.62 Long Buildup 3048 1163 18.86
INFY 1580 PE 24 Apr 2025 3.01 Long Buildup 4017 1336 30.42
INFY 1580 CE 24 Apr 2025 2.63 Long Buildup 2847 1082 28.25
ITC 415 CE 24 Apr 2025 2.11 Long Buildup 2716 1289 18.13
KOTAKBANK 2180 CE 24 Apr 2025 2.12 Long Buildup 2168 1025 18.87
KOTAKBANK 2200 CE 24 Apr 2025 2.01 Long Buildup 4364 2172 19.1
MARUTI 11700 CE 24 Apr 2025 3.48 Long Buildup 3529 1015 19.89
MARUTI 11500 PE 24 Apr 2025 3.24 Long Buildup 3368 1040 22.83
RELIANCE 1340 CE 24 Apr 2025 2.29 Long Buildup 3963 1732 20.73
RELIANCE 1310 CE 24 Apr 2025 2.26 Long Buildup 3942 1747 20.64
SBIN 790 CE 24 Apr 2025 2.05 Long Buildup 3425 1667 19.21
TCS 3600 PE 24 Apr 2025 2.32 Long Buildup 5917 2552 24.47

How to Understand Volume/OI Ratio

  • What It Is: Compares today’s trading volume to existing OI. A higher ratio means more new trades.
  • What It Suggests:
    • Above 2: Notable activity—traders see this strike as a key level (e.g., MARUTI’s 3.48 at 11700 CE).
    • Above 3: Strong interest, often tied to expectations (e.g., HDFCBANK’s 3.64 at 1820 PE).
    • Below 1: Quiet—positions are likely being held or closed.
  • Why It Matters: High ratios highlight “hot” strikes—potential support or resistance zones.

Final Thoughts

F&O data lights the way—OI shifts reveal trader sentiment, and Volume/OI Ratios (like MARUTI’s 3.48) spotlight key levels. Banking’s mixed, IT’s weak, and consumer goods shine. Pair these clues with charts to stay ahead!

Happy trading—see you next time!

Disclaimer: This content is for educational purposes only, based on data as of 1 PM IST on March 28, 2025. This is not financial advice. Trading involves risks. Always do your own analysis and manage risk before trading.

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