Disclaimer: This content is for educational purposes only, based on data as of 1 PM IST on March 21, 2025. This is not financial advice. Trading involves risks. Always do your own analysis and manage risk before trading.
Welcome to today’s F&O Insights! We’re decoding Futures & Options (F&O) data to help you spot big moves, no matter your trading level.
Let’s unpack the signals!
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 | 8950 | 3.11% | 880 | 4511 | Long Buildup | Long Buildup |
| KOTAKBANK | 2077.3 | 2.05% | 135 | 3846 | Long Buildup | Long Buildup |
| ICICIBANK | 1341.6 | 1.51% | -585 | 2113 | Short Covering | Long Buildup |
| TCS | 3598.25 | 0.97% | -4232 | 1901 | Short Covering | Long Buildup |
| MARUTI | 11877 | 1.25% | 684 | 2814 | Long Buildup | Long Buildup |
| INFY | 1594 | -1.36% | 3380 | 1372 | 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: High Put OI Chg (e.g., BAJFINANCE’s 4511) with Long Buildup often means hedging alongside bullish bets—dig deeper!
Spotlight on high-activity options
These options show unusual trading volume relative to OI, hinting at potential big moves.
| Contract | Volume/OI Ratio | Explanation | VOLUME | OI | IV |
|---|---|---|---|---|---|
| BAJFINANCE 9100 CE 27 Mar 2025 | 11.09 | Long Buildup | 25939 | 2340 | 23.78 |
| BAJFINANCE 8800 PE 27 Mar 2025 | 10.39 | Long Buildup | 22705 | 2186 | 25.43 |
| KOTAKBANK 2060 CE 27 Mar 2025 | 10.42 | Long Buildup | 13425 | 1288 | 14.39 |
| KOTAKBANK 2060 PE 27 Mar 2025 | 4.59 | Long Buildup | 7726 | 1684 | 21.4 |
| ICICIBANK 1340 CE 27 Mar 2025 | 9.76 | Long Buildup | 15694 | 1608 | 14.41 |
| ICICIBANK 1330 PE 27 Mar 2025 | 6.62 | Long Buildup | 7365 | 1113 | 20.35 |
| TCS 3600 CE 27 Mar 2025 | 9.57 | Long Buildup | 49849 | 5209 | 19.38 |
| TCS 3550 PE 27 Mar 2025 | 6.47 | Long Buildup | 18276 | 2824 | 20.82 |
| MARUTI 11900 CE 27 Mar 2025 | 7.95 | Long Buildup | 20534 | 2584 | 14.52 |
| MARUTI 11800 PE 27 Mar 2025 | 5.71 | Long Buildup | 10026 | 1755 | 19.44 |
| INFY 1580 CE 27 Mar 2025 | 7.91 | Long Buildup | 12506 | 1581 | 23.28 |
| INFY 1580 PE 27 Mar 2025 | 6.65 | Long Buildup | 20543 | 3088 | 23.82 |
How to understand Volume/OI Ratio
What It Is: Compares today’s trading volume to existing OI. A high ratio signals fresh action.
What It Suggests:
- Above 2: Notable interest—traders see this strike as key.
- Above 5: Unusual activity, often tied to big expectations (e.g., BAJFINANCE’s 11.09 at 9100 CE).
- Below 1: Quiet—positions are being held or closed.
Why It Matters: Ratios like 11.09 or 10.42 scream action—potential breakout zones!
Final Thoughts
F&O data is your edge—OI shifts reveal trader intent, and high Volume/OI Ratios (like BAJFINANCE’s 11.09) spotlight unusual action. Finance is surging, IT’s mixed, and opportunities abound. Pair these clues with charts to catch the next move!
Happy trading—see you next time!
Disclaimer: This content is for educational purposes only, based on data as of 1 PM IST on March 21, 2025. This is not financial advice. Trading involves risks. Always do your own analysis and manage risk before trading.