S&P 500 closes at 7,730.99 on August 27, 2026 — Nasdaq up 1.57%, Dow up 0.2%
The Standard and Poor 500 index closed at 7,730.99 on August 27, 2026, up 0.72 percent. The Nasdaq Composite rose 1.57 percent to 26,541.35 and the Dow Jones Industrial Average gained 105.56 points, about 0.2 percent, to 53,569.44. Nvidia rose 8.7 percent following its earnings beat and added 442 billion dollars in market value, with Salesforce and CrowdStrike results lifting software shares. The 1.37 percentage point gap between the Nasdaq and the Dow indicates the session's gains were concentrated rather than broad
The three lines
- Indexes — S&P 500 at 7,730.99, up 0.72 percent. Nasdaq 1.57 percent, Dow 0.2 percent
- Driver — Nvidia up 8.7 percent, with Salesforce and CrowdStrike lifting software
- Concentration — A 1.37 point Nasdaq-Dow spread. The indexes rose; most stocks did not
Key questions
- Where did the S&P 500 close on August 27, 2026?
- **7,730.99**, up **0.72 percent**. The same session, the **Nasdaq Composite closed at 26,541.35, up 1.57 percent**, and the **Dow Jones Industrial Average at 53,569.44, up 105.56 points or about 0.2 percent**. All three rose, but by very different amounts — the Nasdaq outpaced the Dow by **1.37 percentage points**. That spread describes the character of the day better than any single index level does. What lifted the market was not the market; it was **technology, and within technology, AI**.
- What drove the gains?
- **One stock did a disproportionate share of the work.** Nvidia reported second-quarter revenue of **96.2 billion dollars** after the August 26 close, up 106 percent year on year, and guided to roughly **70 percent revenue growth** next fiscal year. Its shares rose **8.7 percent** the following session, adding **442 billion dollars** of market value — the **second largest single-day gain by any stock on record**. Results from **Salesforce** and **CrowdStrike** lifted software names alongside it. The read across the market was that the AI capital expenditure cycle has more room to run than skeptics had priced.
- The indexes rose. Why did my portfolio not?
- **Because the advance was narrow, and cap-weighted indexes hide that.** The 1.57 percent Nasdaq gain against 0.2 percent for the Dow is the evidence: the Dow's 30 large-cap constituents carry relatively little AI exposure, the Nasdaq is technology-heavy, and a spread that wide means the gains sat in a small set of names. One outlet characterized the session as Nvidia adding hundreds of billions **while the average stock fell**. The mechanism is index construction — the S&P 500 and Nasdaq are **weighted by market capitalization**, so a company worth roughly 5.5 trillion dollars rising 8.7 percent can carry an index upward even as several hundred smaller constituents decline. This publication examined the same dynamic in "Only the Dow at a fifth straight record — the US rally starts to split."
The S&P 500 closed at 7,730.99 on August 27, 2026 — up 0.72 percent.
All three major indexes rose. The amounts were not close.
1. Three numbers
| Index | Close | Change |
|---|---|---|
| S&P 500 | 7,730.99 | +0.72% |
| Nasdaq Composite | 26,541.35 | +1.57% |
| Dow Jones Industrial Average | 53,569.44 | +105.56 pts (+0.2%) |
The Nasdaq beat the Dow by 1.37 percentage points.
That spread describes the session more accurately than any single close. What rose was not the market. It was one part of it.
2. What did the lifting
| Stock | Move | Note |
|---|---|---|
| Nvidia | +8.7% | +$442 billion in market value |
| Salesforce | Higher | Earnings |
| CrowdStrike | Higher | Earnings |
Nvidia reported second-quarter revenue of 96.2 billion dollars (up 106 percent year on year) after the August 26 close and guided to roughly 70 percent revenue growth next fiscal year.
Its 442 billion dollar single-session gain in market value is the second largest by any stock on record. Detailed in "Nvidia adds $442 billion in market value on August 27, 2026."
Salesforce and CrowdStrike results lifted software alongside it. The read across the market: the AI capital expenditure cycle has more room than skeptics had priced.
3. The indexes rose while the average stock fell
One outlet summarized the day as Nvidia adding hundreds of billions while the average stock declined.
The mechanism:
| Element | How it works |
|---|---|
| Index construction | Market-capitalization weighted |
| Nvidia's valuation | roughly $5.5 trillion (largest in the world) |
| Consequence | One constituent rising 8.7% can carry the index alone |
When a company that size gains 8.7 percent, several hundred smaller constituents can slip and the index still closes green. This is also why the Dow only managed 0.2 percent — its 30 constituents carry comparatively little AI exposure.
This publication examined the same split in "Only the Dow at a fifth straight record — the US rally starts to split" and in "Why a good earnings report can still sink a stock."
4. August context
| Date | S&P 500 close |
|---|---|
| August 20 | 7,641.16 |
| August 21 | 7,674.37 |
| August 24 | 7,652.86 |
| August 25 | 7,677.28 |
| August 27 | 7,730.99 |
Still 68 points below the August 13 record of 7,798.99.
5. The Asian read
Korea's KOSPI closed up 1.53 percent at 6,912.37 the same day — a larger gain than any US index, because of index composition. Nvidia demand translates into high bandwidth memory demand, and SK Hynix and Samsung Electronics sit at the center of that market.
Korea also had a domestic offset the US did not: the Bank of Korea raised its policy rate to 3.00 percent that morning, and the index gave back part of its early advance. Covered in "KOSPI closes at 6,912.37 on August 27, 2026."
6. What we could not confirm
- The close — some pages listed 7,673.04, but that source dated August 27 as a Monday, which is wrong. This piece uses 7,730.99.
- Dow figures — 53,569.44 and the 105.56 point gain rest on one source.
- Market breadth — advancer-decliner counts and equal-weight data behind the "average stock fell" claim were not directly verified.
- Individual names — Salesforce and CrowdStrike moves and earnings figures were not examined.
- Rates and dollar — not reviewed for this session.
Sources
- Yahoo Finance — Stock market today: Dow, S&P 500, Nasdaq rally as Nvidia earnings revive AI optimism, software stocks roar back
- CNBC — S&P 500, Nasdaq Composite close higher Thursday as Nvidia rallies on revenue guidance
- Bloomberg — Nvidia Adds $442 Billion in Second Biggest Ever Stock Surge
- Eastern Herald — S&P 500 Today, August 27, 2026: NVIDIA Adds Market Value as the Average Stock Falls
- Forbes — Nvidia Soars Almost 10%, Pushing Value Back Above $5.5 Trillion
- Investing.com — S&P 500 historical data