Nvidia adds $442 billion in market value on August 27, 2026 — second biggest ever, behind Microsoft
Nvidia shares rose 8.7 percent on August 27, 2026, adding 442 billion dollars of market value in a single session. That is the second largest one-day gain by any stock on record, trailing only Microsoft's 450 billion dollar surge less than a month earlier — a gap of just 8 billion dollars. The move followed second quarter revenue of 96.2 billion dollars, up 106 percent from a year earlier, and guidance pointing to roughly 70 percent revenue growth in the next fiscal year. Nvidia's market capitalization stands at about 5.5 trillion dollars, the largest in the world
The three lines
- Record — 442 billion dollars added in one session, second largest ever, 8 billion behind the record
- Move — Shares up 8.7 percent, the biggest since April 2025, when the company was worth less than half as much
- Basis — Q2 revenue of 96.2 billion dollars, up 106 percent, plus guidance for about 70 percent growth next year
Key questions
- How much market value did Nvidia add in one day?
- **442 billion dollars.** Shares rose **8.7 percent** on August 27, 2026, and the resulting single-session increase in market capitalization is the **second largest by any stock in history**. The record holder is **Microsoft at 450 billion dollars**, set less than a month earlier — the two are separated by just **8 billion dollars**, under 2 percent. The 8.7 percent move was Nvidia's largest since **April 2025**, and that comparison carries a caveat worth stating: in April 2025 the company was worth less than half what it is now, so **the same percentage now represents a far larger sum**. After the move, Nvidia's valuation stands at roughly **5.5 trillion dollars**, the largest of any company in the world.
- What drove it?
- **The forward guidance mattered more than the quarter itself.** Second-quarter revenue, reported after the close on August 26, came in at **96.2 billion dollars**, up **106 percent** year on year and **18 percent** above the previous record of 81.6 billion. The data center segment reached **89 billion dollars**, up **117 percent** and accounting for **92 percent** of total revenue. But what moved the stock was guidance pointing to roughly **70 percent revenue growth in the next fiscal year**. The market's standing question about Nvidia has been whether this pace is sustainable, and the company answered that it is. Notably, as this publication reported on the earnings themselves, the third-quarter guidance **assumes zero revenue from China** — meaning that growth rate is being promised without the Chinese market.
- Why does this matter outside the US?
- **Because memory demand is the transmission channel, and it runs through South Korea and Taiwan.** Every Nvidia accelerator ships with high bandwidth memory, a market held largely by SK Hynix, Samsung Electronics and Micron. More accelerators sold means more HBM ordered. On August 27, **SK Hynix rose 2.49 percent** and **Samsung Electronics 1.72 percent**, and Korea's KOSPI closed up **1.53 percent at 6,912.37**, a third straight gain. Korean outlets read the guidance as the basis for a **memory upcycle**. The complication that day was domestic: the Bank of Korea raised its policy rate to 3.00 percent, and the index gave back part of its morning advance — an external tailwind and a domestic headwind arriving within hours of each other.
Nvidia shares rose 8.7 percent on August 27, 2026.
The resulting single-day increase in market value: 442 billion dollars.
That is the second largest one-day gain by any stock in history.
1. Eight billion behind the record
| Rank | Company | One-day gain | When |
|---|---|---|---|
| 1 | Microsoft | $450 billion | August 2026 (within the month) |
| 2 | Nvidia | $442 billion | August 27, 2026 |
The two are separated by 8 billion dollars — under 2 percent. And both were set in the same month, which says something about the scale at which this market is now moving.
The 8.7 percent move was Nvidia's largest since April 2025. That comparison needs one line of context to be accurate: in April 2025 the company was worth less than half what it is today. The same percentage now represents a far larger sum.
Post-move valuation: roughly 5.5 trillion dollars. The most valuable company in the world.
2. The numbers underneath
Reported after the US close on August 26:
| Item | Value | Comparison |
|---|---|---|
| Quarterly revenue | $96.2 billion | +106% year on year |
| Previous record quarter | $81.6 billion | This quarter +18% |
| Data center segment | $89 billion | +117% year on year |
| Data center share | 92% of total revenue | — |
But none of these are what moved the stock 8.7 percent. That was the guidance: revenue growing roughly 70 percent in the next fiscal year.
The market has carried one standing question about Nvidia — can this pace hold? The company answered yes, and the share price responded to the answer rather than to the quarter.
3. The growth is promised without China
This publication covered the earnings themselves in "Nvidia Q2 revenue of $96.2 billion (August 26) — China is booked at zero in the Q3 outlook."
That structure amplified the reaction. The company projected roughly 70 percent growth while assuming no revenue from China at all. If the Chinese market reopens, it becomes upside that is not currently in the number.
It is also the risk. A plan that grows without China has no cushion if the plan slips.
4. The broader US session
| 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 led and the Dow barely moved — gains concentrated in Nvidia and software rather than spread across the market. Covered in "S&P 500 closes at 7,730.99 on August 27, 2026."
5. The channel to Asia — memory
Every Nvidia accelerator ships with high bandwidth memory, and that market is held largely by SK Hynix, Samsung Electronics and Micron. More accelerators means more HBM.
Same-day reaction in Seoul:
| Stock / index | Change |
|---|---|
| SK Hynix | +2.49% (1,730,000 won) |
| Samsung Electronics | +1.72% (266,000 won) |
| KOSPI | +1.53% (6,912.37) |
Korean outlets read the guidance as the basis for a memory upcycle.
The complication was domestic. The Bank of Korea raised its policy rate to 3.00 percent the same morning, and the KOSPI gave back part of its early gain. An external tailwind and a domestic headwind, hours apart.
Background on the memory stack is in "What HBM is" and "Training versus inference — why the same GPU sells twice."
6. What we could not confirm
- The percentage — Bloomberg reported 8.7 percent, Forbes "almost 10 percent." This piece uses Bloomberg.
- The record date — Microsoft's $450 billion day was not pinned down against a second source.
- Valuation — sources ranged from about $5.45 to $5.51 trillion.
- Guidance status — whether the ~70 percent figure is formal guidance or management commentary.
- The warnings — figures behind reported concerns on receivables and margins were not examined.
Sources
- Bloomberg — Nvidia Adds $442 Billion in Second Biggest Ever Stock Surge
- Forbes — Nvidia Soars Almost 10%, Pushing Value Back Above $5.5 Trillion
- Yahoo Finance — Stock market today: Dow, S&P 500, Nasdaq rally as Nvidia earnings revive AI optimism
- Ajunews — Nvidia posts another record on AI investment; margins and China remain variables
- Money Today — Nvidia sees 70% revenue growth next year, fueling a memory upcycle
- Newsspace — Nvidia tops 133 trillion won in quarterly revenue; warnings in China and receivables