Tactical Equity Models: Four Distinct Short-Term Quantitative Setups

Issuance: Once Weekly · Settlement: Daily Late-Night Expiry Cron · Universe: NSE NIFTY 100 & F&O Equities

Abstract—High statistical confidence in short-term equities trading requires moving past generalized indicators into sharply defined structural regimes. Rather than deploying a monolithic screening rule, Kosh classifies tactical setups into four specialized quantitative categories: Dual Momentum Breakouts, Contrarian Mean-Reversions, Derivatives Open Interest Build-Ups, and Post-Earnings Announcement Drift (PEAD). Every call carries an explicit Call Date and Expiry Date. A daily late-night settlement cron evaluates all calls reaching their maturity date, settling them strictly as Hit or Miss, with automated causal post-mortems for every missed objective.

I. The Four Tactical Categories

To achieve institutional confidence, every short-term bet must satisfy the precise invariants of one of four distinct market anomalies. A generic setup that partially matches multiple patterns without fulfilling all gates of a specific category is rejected by the screener.

1. Dual Momentum BreakoutTrend-following model capturing strong relative strength alpha over the benchmark accompanied by institutional volume expansion.
2. Contrarian Mean-ReversionOversold bounce model identifying high-quality large caps experiencing temporary panic liquidation with heavy delivery absorption.
3. Derivatives Long Build-UpFutures and options flow model detecting aggressive institutional buyer accumulation through rising open interest and positive basis.
4. Post-Earnings Momentum (PEAD)Fundamental catalyst model exploiting the post-earnings announcement drift following a significant consensus EPS surprise.

II. Mathematical Specifications & Formulas

1. Dual Momentum & Volume Surge (Trend Continuation)

Captures equities demonstrating sustained institutional accumulation and alpha generation over the Nifty 50. Requires structural trend confirmation, relative momentum outperformance, and expanding volume velocity.

1. Trend Invariant:      Price(t) > EMA(20, t) > SMA(50, t)
2. Relative Strength:    [Return(Stock, 20d) / Return(NIFTY 50, 20d)] ≥ 1.25
3. Volume Velocity:      Volume(t) ≥ 1.80 × SMA(Volume, 20)
4. Momentum Sweet Spot: 55.0 ≤ RSI(14, t) ≤ 68.0
Stop-Loss = Entry Price − [ 1.50 × ATR(14) ]
Target    = Entry Price + [ 3.00 × ATR(14) ]  (1 : 2.0 R:R)
Cadence   = Called once weekly; Expiry set to 10–20 sessions

2. Contrarian Mean-Reversion (Oversold Quality Bounce)

Captures high-probability counter-trend reversals in premier large-cap businesses experiencing transitory liquidation into major structural support, confirmed by elevated delivery absorption.

1. Volatility Band:      Price(t) ≤ LowerBand(Bollinger, 20, 2σ)
2. Oscillator State:     RSI(14, t) ≤ 30.0
3. Delivery Inflow:      Delivery Percentage ≥ 55.0% on NSE
4. Quality Baseline:     Market Cap ≥ ₹25,000 cr & TTM Operating Profit > 0
Stop-Loss = Min(Low, 5 sessions) − 0.50%
Target    = EMA(20) Mean-Reversion Bound
Cadence   = Called once weekly; Expiry set to 10–15 sessions

3. Derivatives Institutional Long Build-Up (F&O Flow Breakout)

Identifies aggressive institutional positioning in F&O constituents where significant cash accumulation is paired with accelerating futures open interest and a positive basis.

1. Open Interest Surge: ΔOI(Today) ≥ +8.0% with Price Change ≥ +1.50%
2. Futures Basis:       Futures Price > Cash Spot Price (Positive Basis)
3. Put-Call Ratio:      PCR(OI) ≥ 0.90 and rising from support
4. Cash Volume Support: Cash Delivery Volume ≥ 1.50 × SMA(Delivery, 10)
Stop-Loss = VWAP(Breakout Day) − 0.75%
Target    = Highest Call Strike OI Resistance Wall (or +2.50 × ATR(14))
Cadence   = Called once weekly; Expiry set to expiry week or 15 sessions

4. Post-Earnings Announcement Drift (PEAD Momentum)

Exploits the empirically proven market underreaction anomaly following substantial quarterly earnings beats. Institutions often take 2 to 4 weeks to adjust model price targets and accumulate full positions.

1. Consensus Beat:      Reported Net Profit ≥ Street Consensus + 10.0%
2. Volume Gap-Up:      Opening Gap ≥ +2.50% with Volume ≥ 2.50 × SMA(Volume, 20)
3. Day 1 Close Guard:   Close(Earnings Day) > Open(Earnings Day)
4. Quality Baseline:     TTM Operating Profit Margin expansion YoY
Stop-Loss = Low(Earnings Day) − 0.50%
Target    = Entry Price + [ 2.50 × ATR(14) ]
Cadence   = Called once weekly; Expiry set to 15–20 sessions

III. The Daily Settlement Cron & Post-Mortem Architecture

Every tactical call carries a deterministic lifecycle. A dedicated automated cron job executes daily at 23:00 IST:

  1. Expiry Identification: The engine queries all active bets where expiryDate ≤ today.
  2. Price Settlement: Official closing prices and intermediate candle extremes (high/low) are evaluated. If the price achieved or exceeded the target, the call is settled strictly as HIT. Otherwise, it is settled strictly as MISS.
  3. Causal Post-Mortem: For every call graded as a Miss, Gemini is invoked to audit the trade against intraday tape records, sector rotation, and corporate filings. It logs two mandatory plain-text analyses: What went wrong and How could we have avoided it.

IV. Active Tactical Calls

Frequency: Weekly · Active Count: 7
TickerCategoryCall DateExpiry DateEntryTargetStopScoreTriggers & Thesis
TRENTTrent LtdDual Momentum Breakout2026-10-022026-10-23₹7,120₹7,650₹6,85592
20 EMA > 50 SMA; RS vs Nifty 1.42; Vol 2.1x SMA20; RSI 62.4
Sustained retail network expansion driving operating margin leverage; relative volume outperformance confirms institutional accumulation.
APOLLOHOSPApollo HospitalsHigh-Momentum 52W Breakout2026-10-112026-10-25₹8,027.5₹8,670₹7,70685
Relative Volume Surge > 1.8x; 7-day return +4.7%; RSI > 58
Weekly momentum leader with sustained accumulation volume and breakout past resistance.
ITCITCHigh-Momentum 52W Breakout2026-10-112026-10-28₹266₹287₹25582
Relative Volume Surge > 1.8x; 7-day return +4.3%; RSI > 58
Weekly momentum leader with sustained accumulation volume and breakout past resistance.
APOLLOHOSPApollo HospitalsHigh-Momentum 52W Breakout2026-10-122026-10-26₹8,027.5₹8,670₹7,70685
Relative Volume Surge > 1.8x; 7-day return +4.7%; RSI > 58
Weekly momentum leader with sustained accumulation volume and breakout past resistance.
ITCITCHigh-Momentum 52W Breakout2026-10-122026-10-29₹266₹287₹25582
Relative Volume Surge > 1.8x; 7-day return +4.3%; RSI > 58
Weekly momentum leader with sustained accumulation volume and breakout past resistance.
TECHMTech MahindraHigh-Momentum 52W Breakout2026-10-182026-11-01₹1,790₹1,933₹1,71885
Relative Volume Surge > 1.8x; 7-day return +8.5%; RSI > 58
Weekly momentum leader with sustained accumulation volume and breakout past resistance.
WIPROWiproHigh-Momentum 52W Breakout2026-10-182026-11-04₹184.4₹199₹17782
Relative Volume Surge > 1.8x; 7-day return +5.9%; RSI > 58
Weekly momentum leader with sustained accumulation volume and breakout past resistance.

V. Expiry Settlement & Causal Audit Ledger

Closed Record: 11
TickerCategoryCall DateClosed OnEntryExit PriceReturnOutcome
BHARATFORGBharat Forge LtdDual Momentum Breakout2026-10-022026-10-20₹1,485₹1,835+23.57%[HIT]
HDFCBANKHDFC Bank LtdContrarian Mean-Reversion2026-10-022026-10-18₹1,640₹728.85-55.56%[MISSED]
TATAMOTORSTata Motors LtdDual Momentum Breakout2026-09-112026-09-29₹975₹1,052+7.9%[HIT]
BAJFINANCEBajaj Finance LtdContrarian Mean-Reversion2026-09-082026-09-26₹7,250₹6,980-3.7%[MISSED]
TESTHITTest Hit LtdDual Momentum Breakout2026-10-012026-10-08₹100₹112+12%[HIT]
TESTMISSTest Miss LtdContrarian Mean-Reversion2026-10-012026-10-08₹100₹92-8%[MISSED]
TRENTTrent LtdDual Momentum Breakout2026-10-012026-10-05₹7,120₹7,800+9.55%[HIT]
INFYInfosysHigh-Momentum 52W Breakout2026-10-042026-10-18₹1,035₹1,161.2+12.19%[HIT]
HDFCLIFEHDFC Life InsuranceHigh-Momentum 52W Breakout2026-10-042026-10-21₹534.2₹545.5+2.12%[MISSED]
INFYInfosysHigh-Momentum 52W Breakout2026-10-052026-10-19₹1,035₹1,161.2+12.19%[HIT]
HDFCLIFEHDFC Life InsuranceHigh-Momentum 52W Breakout2026-10-052026-10-22₹534.2₹545.5+2.12%[MISSED]

Post-Mortem Analysis on Missed Calls

HDFCBANK · Contrarian Mean-Reversion (Called: 2026-10-02 → Closed: 2026-10-18)

What went wrong: The primary failure was an unforeseen major corporate action, likely a stock split or a specific scheme of arrangement, which caused a structural price reset of HDFCBANK shares by 55.56%. This event rendered all pre-existing technical support levels and the mean-reversion investment thesis entirely irrelevant.

How could we have avoided it: To prevent similar catastrophic outcomes, a mandatory pre-entry screening filter must be implemented to identify any scheduled corporate actions within the trade horizon. Furthermore, all active positions should be subject to immediate review and potential closure upon the announcement of any unanticipated corporate action during the holding period.

BAJFINANCE · Contrarian Mean-Reversion (Called: 2026-09-08 → Closed: 2026-09-26)

What went wrong: Unsecured consumer credit delinquency data deteriorated across NBFCs mid-month, causing persistent institutional liquidation that broke the ₹7,050 stop loss without any reversal wick.

How could we have avoided it: Avoid contrarian mean-reversion entries in financial services when the RBI credit risk regime is active or sector-wide NII growth is decelerating.

TESTMISS · Contrarian Mean-Reversion (Called: 2026-10-01 → Closed: 2026-10-08)

What went wrong: Price broke below support due to sector-wide liquidation.

How could we have avoided it: Enforce stricter delivery absorption thresholds prior to trade entry.

HDFCLIFE · High-Momentum 52W Breakout (Called: 2026-10-04 → Closed: 2026-10-21)

What went wrong: The short-term momentum in HDFCLIFE failed to sustain past "565.85, leading to insufficient follow-through buying required to overcome minor overhead resistance and reach the ">577 target. This indicates a lack of continued institutional accumulation or strong retail participation, resulting in early profit-booking just shy of the objective.

How could we have avoided it: Implement a pre-entry screening filter to identify and avoid setups where the target price falls within 2% of a significant prior resistance level or an area of high volume-by-price accumulation, which can absorb momentum just shy of the objective.

HDFCLIFE · High-Momentum 52W Breakout (Called: 2026-10-05 → Closed: 2026-10-22)

What went wrong: The setup failed due to a dissipation of buying pressure and momentum just shy of the target price, encountering resistance likely from profit-taking or overhead supply near the ₹565-₹570 level. While initial algorithmic triggers validated the breakout, sustained follow-through conviction was absent to overcome this final hurdle and achieve the full quantitative objective.

How could we have avoided it: Implement a tactical profit-taking rule: if the price reaches 95% of the target but fails to breach it within two trading sessions on declining volume, liquidate 50% of the position to capture partial gains. Alternatively, require the target price to be at least 3% above the nearest significant historical resistance level to ensure clear upside potential.