The September 21, 2026 U.S. regular trading session (09:30–16:00 ET) was marked by strength in large-cap technology stocks. The Nasdaq Composite rose 2.26% and the S&P 500 gained 1.49%, while Meta surged 11.34% among the tracked stocks, substantially outpacing the indexes. By contrast, SanDisk fell 1.41%, diverging from the closing direction of the major indexes and many technology stocks.

Nasdaq +2.26%, S&P 500 +1.49% at regular-session close

All figures below are based on September 21, 2026 U.S. regular-session closing data. Index levels and changes from the previous day are in points, and percentage changes are in %.

Major index September 21, 2026 close (points) Change from previous day (points) Change
S&P 500 7,764.70 +114.20 +1.49%
Nasdaq Composite 27,122.09 +599.55 +2.26%
Dow Jones 52,048.83 +366.19 +0.71%
Russell 2000 2,875.36 +14.96 +0.52%

According to S&P 500 closing data, the S&P 500 closed at 7,764.70 points on September 21, 2026. It opened at 7,692.83 points, reached an intraday high of 7,779.22 points and an intraday low of 7,691.19 points, with volume of 3.26708 billion shares.

Nasdaq Composite closing data shows that the Nasdaq Composite rose 599.55 points to 27,122.09 points on September 21, 2026. The Dow Jones closed at 52,048.83 points, according to Dow Jones closing data, while the Russell 2000 ended the regular session at 2,875.36 points, according to Russell 2000 closing data. The data confirm that the Nasdaq Composite’s gain exceeded that of the other major indexes at the close, but this simultaneous movement alone cannot identify the cause of the advance.

Meta surges +11.34%, while SanDisk moves opposite to the indexes

Based on Meta closing data, Meta closed at $741.25 on September 21, 2026, up $75.50 (11.34%) from the previous day. It opened at $680.29, reached an intraday high of $753.00 and an intraday low of $679.60, with volume of 48,269,329 shares. This was the largest percentage move among the tracked stocks and substantially exceeded the Nasdaq Composite’s 2.26% gain on the same trading day. Further historical analysis of Meta is available in the Meta stock hub.

Conversely, SanDisk closing data shows that SanDisk ended the regular session at $1,766.64 on September 21, 2026, down $25.18 (1.41%). Its intraday high was $1,834.49, its intraday low was $1,737.01, and volume was 10,282,319 shares. The directional difference between SanDisk’s closing decline and gains of 1.49% in the S&P 500 and 2.26% in the Nasdaq Composite is confirmed by the data, but closing-price changes alone cannot establish the reason behind it. Related records are available in the SanDisk stock hub.

According to Tesla closing data, Tesla closed at $375.30 on September 21, 2026, up $11.03 (3.03%). Its intraday high was $378.36, its low was $371.10, and volume was 36,123,485 shares. Previous analysis is available in the Tesla stock hub.

Semiconductor and platform large caps also close higher

Nvidia closing data shows that Nvidia closed at $227.38 on September 21, 2026, up $5.11 (2.30%). It opened at $222.93, reached an intraday high of $228.50 and an intraday low of $221.56, with volume of 108,450,493 shares. Nvidia’s individual stock performance can be followed in the Nvidia stock hub.

Based on Micron closing data, Micron closed at $1,043.96 on September 21, 2026, up $28.16 (2.77%). Its intraday high was $1,064.49, its low was $1,030.68, and volume was 27,101,272 shares. Historical Micron analysis is available in the Micron stock hub.

Amazon, according to Amazon closing data, closed at $258.45 on September 21, 2026, up $4.74 (1.87%), while Microsoft, according to Microsoft closing data, closed at $501.61, up $7.83 (1.59%). Amazon’s intraday high was $259.49 and volume was 40,690,914 shares, while Microsoft’s intraday high was $501.87 and volume was 26,025,479 shares. Related historical analysis is available in the Amazon stock hub and the Microsoft stock hub.

According to Alphabet closing data, Alphabet closed at $354.97 on September 21, 2026, up $5.43 (1.55%), while Apple, according to Apple closing data, closed at $338.98, up $2.85 (0.85%). Alphabet’s intraday high was $357.58, and Apple’s intraday high was $339.64. Previous records for the individual stocks are available in the Alphabet stock hub and the Apple stock hub.

Lower yields and oil prices, along with higher stock prices, were observed together

As of the September 21, 2026 close, the U.S. 10-year Treasury yield was 4.963%, down 0.035 percentage points (0.70%) from the previous day. WTI crude oil closed at $91.97 per barrel, down $8.33 (8.31%), while the VIX rose 0.01 points (0.07%) to 14.82 points. The U.S. Dollar Index rose 0.214 points (0.21%) to 100.434 points.

In the editor’s interpretation, stock-index gains, declines in the 10-year Treasury yield and WTI crude oil, and a gain in the U.S. Dollar Index occurred together at the September 21, 2026 regular-session close. However, the simultaneous movement of these closing figures alone cannot support the conclusion that changes in yields or oil prices caused stock prices to rise.

The collected Charles Schwab original article cited lower oil prices and yields in its headline as the backdrop for higher stocks. That is the interpretation presented by the report, and the closing data above do not independently establish causation. In addition, the Federal Reserve FOMC statement stated that on September 16, 2026, it raised the target range for the federal funds rate by 0.25 percentage points to 3.75–4.00%. This is not asserted to be a direct cause of the September 21, 2026 closing movements.

3 items to check in the next regular session

  1. Check how the September 21, 2026 closing levels of 7,764.70 points for the S&P 500, 27,122.09 points for the Nasdaq Composite, 52,048.83 points for the Dow Jones, and 2,875.36 points for the Russell 2000 change at the next regular-session close.

  2. Review the differences in stock-specific moves shown on September 21, 2026: Meta at $741.25 (up 11.34%), Tesla at $375.30 (up 3.03%), Nvidia at $227.38 (up 2.30%), and SanDisk at $1,766.64 (down 1.41%).

  3. Check together the changes at the next regular-session close in the U.S. 10-year Treasury yield, which was 4.963% on September 21, 2026; WTI crude oil, which was $91.97 per barrel; the VIX, which was 14.82 points; and the U.S. Dollar Index, which was 100.434 points.