SEIJPY Breaks Bollinger Band, Volume Spikes as Support Tests

Summary
• Price declined sharply from 10.08 to 9.59 amid heavy volume and bearish engulfing patterns.
• Strong bearish momentum confirmed by MACD and RSI dipping into oversold territory.
• Volatility expanded as price dropped below Bollinger Band support.
• Volume surged above average, especially during early Asian session.
• Key support at 9.60–9.63 tested, with potential to extend to 9.55–9.58.

Market Overview
Sei/Yen (SEIJPY) opened at 10.07 on 2026-03-21 and closed at 9.59 by 12:00 ET on 2026-03-22. The 24-hour range was 10.08 (high) to 9.59 (low). Total volume traded was 298,127.0 units, with notional turnover of 2,858,982.05 JPY.

Structure & Formations

Price action displayed a strong bearish bias, with a large bearish engulfing pattern forming after a brief rebound above 9.85. A key support level emerged between 9.60 and 9.63, where price found temporary buying interest. A doji formed near 9.63, hinting at short-term indecision, though the prevailing downward pressure remains intact.

Moving Averages

On the 5-minute chart, price closed below both the 20-period and 50-period EMAs, reinforcing bearish momentum. Daily averages suggest further support could come into play if price tests the 50-day average, which may be located in the 9.45–9.50 range.

MACD & RSI

The MACD line remained negative throughout the session, with a bearish crossover observed early in the Asian session. RSI confirmed overbought conditions in the morning, before plunging into oversold territory in the afternoon and evening, suggesting limited immediate short-term upside.

Bollinger Bands

Volatility expanded significantly as price broke below the lower Bollinger Band during the early Asian session. This breakout suggests a potential continuation of the downward trend unless a reversal develops near the 9.60–9.63 range.

Volume & Turnover

Volumes spiked during the Asian session, particularly in the 03:15–04:30 ET window, coinciding with a decline from 9.85 to 9.81. Notional turnover surged to over 458,000 JPY during this period, reinforcing the bearish move. A divergence between price and volume was observed in the late afternoon, indicating temporary exhaustion.

Fibonacci Retracements

Applying Fibonacci to the key 10.08–9.59 move, the 61.8% retracement level is near 9.63, which was tested during the session. A breakdown below this level could bring the 50% retracement (9.83) into focus for a possible countertrend bounce.

Looking ahead, a test of the 9.55–9.58 support zone could trigger further downside, but a bounce from the 9.60–9.63 range may attract short-covering buyers. Investors should remain cautious as the pair appears to be in a high-risk consolidation phase.