US Market Crash: Here's what triggered Friday's steep Wall Street sell-off

CNBC-TV18 reported on a steep Friday sell-off on Wall Street, though the headline alone does not specify the precise trigger, so the underlying cause cannot be confirmed from this source. The broad equity decline pressured the S&P 500 and the Nasdaq-100, indices whose heavy weighting toward large-cap growth and technology names makes them especially sensitive to shifts in discount rates and risk appetite. A sharp repricing of risk typically transmits through higher real yields, which lower the present value of long-duration earnings, and through forced de-risking by leveraged or momentum-driven positions, amplifying index-level moves. The Nasdaq-100 is generally the more exposed of the two given its concentration in high-multiple technology stocks, while the S&P 500 reflects a wider cross-section of sectors. Traders should watch the next scheduled US inflation print and Federal Reserve communications for evidence on whether rate expectations are driving the pressure or whether the move reflects a broader growth or earnings concern.

The Nasdaq-100 (NDX) is the US large-cap tech benchmark. NDX is more sensitive to rate decisions than SPX because of longer-duration cash flows, and heavily concentrated in Tech/Comms names — mega-cap earnings season dominates price action.

HIGH-impact news is typically a market-moving event with multi-pip or multi-percent intraday reactions. Examples include central bank rate decisions, major CPI/NFP releases, geopolitical shocks, mega-cap earnings beats/misses, and regulatory announcements. Traders typically position-reduce or hedge ahead of scheduled HIGH-impact events, and follow the wire in real time to react to unscheduled ones (war headlines, central-bank emergency statements, surprise corporate actions). The Trading News Terminal squawk box reads every HIGH-impact headline aloud the moment it hits the wire — so active traders don't have to stare at the feed.

Active traders typically follow a three-step workflow when a market-moving headline hits the wire: (1) read the headline on the terminal or hear it on the squawk box; (2) assess whether the news is already priced in (by checking intraday price action in the seconds before) or whether it's genuinely new information; (3) act — either entering a breakout position, fading an overreaction, or tightening stops on existing trades. Trading News Terminal's Pro plan delivers wire-grade headlines within seconds of the source, with automatic audio squawk on every HIGH-impact event, so the read-assess-act cycle never waits on a refresh button.