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Fade the gap or chase it? NIFTY opening gaps, tested

NIFTY · Apr 2023 – Mar 2025 · 194 gap days · spot
Disclaimer: For educational purposes only. These are backtested past results, not investment advice. Trading involves risk, and past performance does not guarantee future returns.
query › "When NIFTY gaps over 0.3% at the open, fade it (short gap-ups, long gap-downs) vs go with it. Exit at close."
+1,328
Fade · net pts
−1,328
Chase · net pts
52.1%
Fade win rate
194
Gap days
−2,150
Fade max drawdown
Cumulative P&L (points · NIFTY spot)
0+1000+2000Fade the gapChase the gap

NIFTY opens away from yesterday's close all the time. The eternal question: does a gap fill (fade back toward the prior close) or does it run (continue in the gap's direction)? We took every day NIFTY gapped more than 0.3% — 194 of them over two years — and tested both plays: fade the gap (short a gap-up, long a gap-down), or chase it. Enter at the open, exit at the close.

Fading edged it out

Fading the gap won 52.1% of the time and netted +1,328 points. Chasing did the exact opposite — it's the mirror trade, so it lost the same 1,328 points and did it with a bigger drawdown (−3,306 vs −2,150). Over this window, the crowd that bought the excited gap-up and sold the panicked gap-down was, on net, wrong.

A thin edge, not a free lunch
The fade won only ~52% of days and average win (+110) barely beat average loss (−105). This is a small statistical lean, not a money printer — and a −2,150-point drawdown means even the winning side had long stretches of pain. On a strong-trend gap day, the fade gets run over.

Takeaway

On average, NIFTY gaps mean-revert more than they continue — a mild edge for faders. But the margin is thin and the drawdowns real. The signal is a lean to combine with context (news, trend, level), not a standalone system.

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