What is the Accumulation Activity score?
The Accumulation Activity score is a descriptive indicator that surfaces stocks with recent institutional activity. It combines three observable signals — delivery volume trends, FII/DII sector flows, and earnings surprises — into a single number from 0 to 100.
A score of 72 means "something is happening here — institutional participants appear active in this stock." It does not mean the stock price will go up.
The three signals
Delivery Volume Trend (40% weight)
When a stock is bought via delivery (not intraday speculation), it signals that buyers intend to hold. A rising delivery percentage over recent sessions suggests accumulation — informed participants building positions. This factor compares the current delivery % against its recent average.
FII/DII Sector Flow Alignment (35% weight)
Foreign Institutional Investors (FIIs) and Domestic Institutional Investors (DIIs) are the largest market participants. When FII money flows into a sector and a stock belongs to that sector, it increases the probability of sustained institutional interest. This factor checks whether the stock's sector is among the top recipients of institutional flows.
Earnings Surprise (25% weight)
When a company's reported earnings exceed market expectations, it often triggers institutional re-evaluation. A positive earnings surprise (more than 5% above estimates) is a strong catalyst. This factor measures how the latest quarterly results compared to consensus estimates.
How the composite is calculated
Each signal is normalized to a 0–100 range using sigmoid normalization, then combined using the weights above. The composite score is:
score = (deliveryTrend × 0.40) + (fiiDiiAlignment × 0.35) + (earningsSurprise × 0.25)
Scores are computed daily at 3:00 AM IST and reflect the prior trading session's data.
What this score does not do
- It doesnot predict future price movements. Institutional activity can persist for months without price appreciation, or can reverse.
- It doesnot account for hedging, derivatives positions, or off-market transactions that offset visible delivery activity.
- It doesnot consider macro factors, regulatory risk, promoter pledging, or governance issues.
- It doesnot replace fundamental analysis or due diligence.
How to use it
Think of the score as an attention router. With 5,000+ stocks on the NSE, it surfaces names worth investigating further. A high score says "look closer," not "buy this."
Always check the component breakdown — a high composite driven by a single factor is a weaker signal than one where multiple factors align. Use the score alongside your own research, not as a substitute for it.
Data sources
- Delivery volume: NSE Bhavcopy (daily)
- FII/DII flows: NSE daily institutional activity data
- Earnings: Company quarterly filings via BSE/NSE
Future improvements
We log daily scores and plan to publish backtested performance data once sufficient history is available. If individual factors prove to have predictive value over specific time horizons, we may introduce a separate predictive signal with full methodology and hit-rate disclosure.