By Shakti Tiwari — Nifty Option Trader, NISM-Certified (Series-XII), Research Analyst & XGBoost Expert. Research only, not SEBI-registered advice.
Published: 27 Jul 2026, 04:31 PM IST | Market data as of: 27 Jul 2026, 04:31 PM IST (delayed — Yahoo Finance for NSE prices, Coingecko for BTC) | Source: Yahoo Finance (NSE prices) + Coingecko (BTC) + Google News RSS (sentiment).
As of 27 Jul 2026, 04:31 PM IST, Nifty 50 is at 23,996 and Bitcoin near $65,287. This scan ranks Nifty 50 constituents by a transparent weighted anomaly score (news negative-sentiment %, volume, sentiment momentum) refreshed live.
Method note: The score is a documented weighted heuristic —
0.5·neg% + 0.3·(vol×10, capped at 100) + 0.2·shock— wherevolis the raw fresh-headline count andshockis a placeholder (currently 0, pending intraday-history integration). It is not a trained XGBoost model and not a price prediction. It flags attention zones only.
Top Anomaly Rankings (Live)
| Rank | Stock | Price ₹ | Neg % | News Vol | Score |
|---|---|---|---|---|---|
| 1 | AXISBANK | 1,228 | 100% | 6 | 68.0 |
| 2 | HDFCBANK | 740 | 83% | 6 | 59.7 |
| 3 | ICICIBANK | 1,446 | 83% | 6 | 59.7 |
| 4 | SBIN | 1,021 | 50% | 6 | 43.0 |
| 5 | INFY | 1,079 | 33% | 6 | 34.7 |
| 6 | RELIANCE | 1,280 | 17% | 6 | 26.3 |
| 7 | TCS | 2,296 | 17% | 6 | 26.3 |
| 8 | ITC | 286 | 17% | 6 | 26.3 |
| 9 | TATAMOTORS | N/A | 17% | 6 | 26.3 |
| 10 | M&M | 3,239 | 0% | 6 | 18.0 |
What The Score Means
- Neg % = share of recent news flagged negative by our sentiment model (Google News RSS headlines classified POSITIVE / NEGATIVE / NEUTRAL).
- News Vol = raw count of fresh headlines (momentum proxy). The score scales it ×10, capped at 100.
- Score = 0.5·neg% + 0.3·(NewsVol×10, capped 100) + 0.2·shock, where shock = 0 today. Higher = bigger anomaly.
- Worked example (top rank): 0.5×neg% + 0.3×60 (6 headlines ×10) + 0.2×0.
How To Use It
Pair anomalies with option-chain OI + max pain before any trade. High negative score = caution/contrarian zone, not a blind sell.
Frequently Asked Questions
What is the Nifty 50 anomaly scan?
A daily live ranking of Nifty 50 stocks by news-sentiment anomaly + volume, scored with a transparent weighted (XGBoost-style) heuristic by Shakti Tiwari — not a trained model.
Is this a buy/sell signal?
No. It flags attention zones. Always confirm with price action, option chain and risk stop.
Methodology
Live prices via Yahoo Finance; news sentiment via Google News RSS; composite score is a transparent weighted model (documented). Research, not advice.
Auto-generated via nse_ai_agent on 27 Jul 2026, 04:31 PM IST.
Disclaimer
Independent research, not investment advice. Consult a SEBI-registered advisor.
About the Author
Shakti Tiwari is a Nifty Option Trader, Research Analyst and XGBoost Expert publishing daily NSE India research.
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