Bitcoin (BTC) kept blowing through support levels during trading on Sept. 20 ahead of what promised to be a "very interesting" U.S. stock market open.

BTC/USD 1-hour candle chart (Bitstamp). Source: TradingView

No sweat for BTC traders after $42,500 visit

Data from Cointelegraph Markets Pro and TradingView tracked BTC/USD. It dipped briefly to near $42,500 before returning to hover near $44,000 in volatile conditions.

Monday's low was beneath that seen earlier in the month during the leverage cascade, with Bitcoin testing both its weekly higher low and 21-week exponential moving average (EMA) as support.

As Cointelegraph reported, a plethora of factors combined to produce sell pressure for BTC markets. These were led by concerns over Evergrande defaulting on hundreds of millions of dollars in debt, in turn pressuring stocks and strengthening the United States dollar. Rising Bitcoin exchange balances provided an additional catalyst from within the market, itself.

Traders, nonetheless, kept their cool.

"Why are you surprised today? Don’t be so emotional," popular Twitter account Anbessa told followers at the height of the rout.

Anbessa espied levels in the mid-$30,000 range as being the only definitive area of concern, with Bitcoin still well above $40,000 and a Fibonacci retracement level at $38,000.

For analyst and statistician Willy Woo, however, the stock market open should provide a debate in itself.

"SPX teetering, threatening a large sell-off," he warned in advance of Wall Street's return.

"BTC carving out a Wycoffian distribution pattern, speculators selling down in risk-off mode, meanwhile investors on-chain have been in strong accumulation. It's going to be an interesting opening to this morning's equities market."

Woo added that should stocks face a deeper crash, the situation may mimic 2020 when Bitcoin's supply squeeze ultimately sent it from $3,000 lows to new all-time highs in spite of initial misgivings.

S&P 500 1-day candle chart. Source: TradingView

Bulls' conviction proves hard to shake

Others were even less fazed by the events of Sept. 20, including popular trader Pentoshi, who revealed record BTC exposure at current levels.

Related: ‘Best bear market ever’ — 5 things to watch in Bitcoin this week

"Do I think 41k is possible? Yes. But I think we see 56k–58k within three weeks. I’m macro bullish," he said as part of comments on the day.

Meanwhile, data from monitoring resource Material Indicators captured the rapidly-changing picture on spot exchanges, where liquidity was being taken incrementally.

BTC/USD buy and sell levels (Binance) as of Sept. 20. Source: Material Indicators