Why Is Nasdaq 100 Moving Today? US100 Tests Key Support

Market mover Neutral bias Oct 16, 2026, 16:36 UTC

Oliver HayesMarket Risk Analyst · ForexR analyst

US100 has fallen 1.58% to 29448.6 in New York trading, with support at the previous day low of 29406.1 and resistance at S1, 29556.8. Evidence is mixed: price sits above its 200-day average but below faster-moving levels on the four-hour and hourly charts.

A Sharp New York-Session Pullback

US100 last traded at 29448.6, down 471.9 points, or 1.58%, from the previous close of 29920.5. The session opened at 29900.6, reached a high of 30020.6, and has fallen to a day low of 29406, putting the day's range at 614.6 points.

That range already equals about 130% of the 14-day average true range of 472.8 points, and today's decline alone is roughly one full ATR reading. The move also stands out against recent history: the index is down 4.28% over the last five sessions, even though the 20-day change is close to flat at 0.1%.

The trend picture is mixed rather than one-directional. Price remains above its 200-day exponential average on the daily chart, even as the daily trend itself is labeled mixed and price sits below both the 20- and 50-day exponential averages. The four-hour and one-hour trends are both down, and the daily RSI reads 44, just under the midpoint. With a longer-term signal pointing one way and the shorter frames pointing the other, the setup reads as neutral rather than a clean trend in either direction.

What's Being Reported

Newsflow volume around the index is elevated, and the coverage leans toward a rotation theme. Investopedia flagged signs that the Nasdaq 100's recent run of weekly gains could be coming to an end, while Seeking Alpha framed part of the backdrop as the Dow Jones closing ground on the Nasdaq 100 amid a shift in enthusiasm toward artificial-intelligence-linked names. Invezz separately noted that Dow futures were firmer heading into Wall Street's open. MarketWatch, for its part, argued investors may not want to abandon tech exposure altogether despite the pullback. Earlier, the WSJ reported that Japan's Nikkei had tracked Wall Street's gains. None of this proves why price moved today, but it frames the conversation around the session's decline.

Key Levels for US100

Price is positioned between S2 at 29193 and S1 at 29556.8. The nearest resistance is S1 at 29556.8, just 108.2 points above current levels, while the nearest support is the previous day's low at 29406.1, only 42.5 points below. The daily pivot sits higher at 29769.8, with R1 at 30133.6, R2 at 30346.6 and R3 at 30710.4 above that; on the downside, S3 sits at 28980, close to the round number at 29000, while R1 sits not far above the round number at 30000.

The five-day window shows a high of 31063.3 against a low of 29406.1. The 20-day window is wider still, spanning a high of 31365 down to a low of 29355.1, underlining how far the index has pulled back from its recent extremes.

Scheduled Risk Today

The US Monthly Budget Statement is due at 18:00 UTC today, a medium-impact release where the estimate stands at -29 against a previous reading of -166.8. Tomorrow brings an IMF meeting at 00:00 UTC, also flagged as medium impact, with no estimate on record. Using an economic calendar alongside price levels can help frame how close the index sits to key points before and after such releases.

Positioning, Yields and Sentiment

The latest CFTC Commitments of Traders data, as of the week to October 6, showed large speculators net long Nasdaq 100 (US100) in futures, and they added to that net long position over that week. That snapshot is now more than a week old and describes positioning, not a forecast for today's session.

US Treasury yields at the close on October 15 showed the 2-year at 4.77%, down 5 basis points, and the 10-year at 5.10%, down 9 basis points, context for the broader rate backdrop rather than a cause of today's move.

News volume around US100 is running at 218% of its 90-day average, and the opportunity read from that coverage currently stands at -88, a bearish reading. That same measure had briefly swung from -92 to -8 within the past 24 hours, a reminder that this gauge of coverage tone moves quickly and is not a forecast of price direction.

Scenarios From Here

A break above R1 at 30133.6 would open the way toward R2 at 30346.6, a move of 213 points; slipping back below the daily pivot at 29769.8 would call that bullish case into question.

Alternatively, a break below S2 at 29193 would open a path toward S3 at 28980, also a 213-point move; reclaiming the daily pivot at 29769.8 would invalidate that bearish read. Either path involves a distance well beyond today's spread of 2.5 points, so position sizing deserves attention regardless of direction; a position size calculator can help frame that before acting on any scenario.

Bottom Line

US100 has moved roughly one ATR lower today, sitting between S1 at 29556.8 and S2 at 29193, with the previous day low at 29406.1 the nearest support. The evidence is split between a longer-term position above the 200-day average and shorter-term trends pointing down, which keeps the near-term read neutral. The Monthly Budget Statement at 18:00 UTC and tomorrow's IMF meeting are the scheduled events to frame against these levels, alongside the rotation theme running through today's newsflow.