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  • Smaller Lots, Bigger Flows!

Smaller Lots, Bigger Flows!

Yash Tiwari
Sean Horgan
Yash Tiwari & Sean Horgan
Yash Tiwari & Sean Horgan

Dec 30, 2025

Smaller Lots, Bigger Flows!

TLDR

Market Recap: December 30, 2025

On December 30, Thin year-end, monthly expiry trade kept benchmarks flat: Sensex 84,675.08 (-20, -0.02%) and Nifty 50 25,938.85 (-3.25, -0.01%). Broader risk cooled with Nifty Midcap 100 -0.15% and Nifty Smallcap 100 -0.28%, while leadership rotated into metals, PSU banks, and autos as IT and defensives lagged. Volatility eased, with the India VIX at 9.61 (-1.13%), as FIIs were net sellers (in cash) and the rupee strengthened due to rebalancing flows.

Key Drivers :

  • Expiry-day positioning: Month-end squaring kept the tape range-bound, with hedges and rolls dominating flows and keeping directional conviction low.

  • FII-DII push-pull: Foreign selling persisted, but domestic buying absorbed supply, limiting downside in frontline indices despite weak market breadth.

  • Cyclicals take the wheel: Metals and select financials outperformed on rotation, offsetting drag from IT and consumption names in a low-volume session.

Today’s Top Stories:

  • NSE cuts index F&O lot sizes from Jan series: Smaller lots reset sizing and margins, likely driving early-Jan churn in rolls and strikes.

  • Nifty index rejig tomorrow: Passive flow window can spike volumes and create one-day price gaps in inclusion and exclusion names.

  • RBI liquidity waypoints ahead: Jan 5 OMO buy and Jan 13 FX swap are the next catalysts for rates, forward premiums, and rate sensitivities.

  • Bharat Forge defence order: ₹1,662 crore carbine win boosts order visibility and strengthens the defence execution narrative into 2026.

  • Shriram Finance AAA upgrade: CARE lift after MUFG deal supports funding costs and sentiment, with markets watching spread and growth follow-through.

Market Snapshot

CNBC

Nifty 50 Index Heatmap

TradingView

Top Gainers & Losers

TradingView

TOP STORIES

1. NSE cuts index F&O lot sizes (new Jan series)

Gemini-2.5

  • Change: Nifty 75→65, Bank Nifty 35→30, FinNifty 65→60, Midcap Select 140→120.

  • Why: Lowers per-lot risk; forces immediate sizing and margin recalibration for traders and brokers.

  • Market: Expect early-Jan churn as positions roll into new contract notionals.

    $NSEINDIA.P ( 0.0% )

NSE cuts index F&O lots. Impact?

  • Bullish: broader participation
  • Neutral: minor change
  • Cautious: churn risk

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2. Nifty index rejig goes live tomorrow

Gemini-2.5

  • Event: Quarterly index rebalance triggers forced passive realignment at close and next open.

  • Why: Flow-driven price gaps often appear in inclusion/exclusion names, then fade post-implementation.

  • Market: Watch delivery spikes and closing auction volatility.

    $NIFTY50.NSE ( 0.0% )

Rejig day tomorrow. Trade view?

  • Bullish: flow tailwind
  • Neutral: one-day noise
  • Cautious: whipsaw risk

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3. RBI liquidity waypoints: Jan 5 OMO, Jan 13 FX swap

Gemini-2.5

  • Event: RBI’s next OMO buy and longer-tenor USD-INR swap are the near-term catalysts.

  • Why: Liquidity and forwards impact bond yields, bank funding costs, and rate-sensitive equities.

  • Market: Rates desk will trade auction cut-offs and forward premium moves.

RBI OMO and FX swap ahead. Market effect?

  • Bullish: rates ease
  • Neutral: priced in
  • Cautious: cut-off shock

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4. Bharat Forge wins ₹1,662 cr close-quarter battle carbine order

Gemini-2.5

  • Order: ₹1,662 cr Defence Ministry CQB carbine contract lifts executable defence revenue visibility.

  • Why: Strengthens indigenisation narrative and improves odds of follow-on programs.

  • Market: Defence sentiment improves; milestones and margins are the durability check.

    $BHARATFORG.NSE ( ▲ 6.79% )

Bharat Forge CQB order. Your stance?

  • Bullish: orderbook rerate
  • Neutral: wait execution
  • Cautious: margin risk

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5. Shriram Finance gets AAA upgrade after MUFG tie-up

Gemini-2.5

  • Update: CARE upgrades Shriram Finance to AAA, improving liability optics post strategic partnership.

  • Why: Can lower borrowing costs and widen funding access for an NBFC.

  • Market: Stock firmed as investors priced cheaper funding and spread support.

    $SHRIRAMFIN.NSE ( ▲ 3.52% )

Shriram gets AAA upgrade. What next?

  • Bullish: funding edge
  • Neutral: gradual benefit
  • Cautious: growth risk

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GYAANI HOT TAKES

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