- How much has SanDisk stock fallen?
- Why is SanDisk stock falling?
- Why do chip prices matter so much to SanDisk?
- Why did SanDisk stock bounce back on October 15?
- What should investors watch next?
- Author’s Take
SanDisk stock has fallen for six trading days in a row, losing 17.58% in that time. Investors are worried about growing competition from China and whether companies will keep spending heavily on AI.
On October 15, the stock bounced back 9.31% from its lowest price of the day to close at $1,394.83. Even after that recovery, it ended 0.61% below the previous day’s closing price.
The main concern is easy to understand: SanDisk’s sales have grown quickly, helped by higher prices. Investors now want to know how long those prices can stay high.
How much has SanDisk stock fallen?
SanDisk closed lower on each of the following six trading days. Its biggest falls during this period came on October 8, October 12 and October 14.
| US trading date, 2026 | Closing price, USD | Change from previous close |
| October 8 | $1,609.46 | -4.90% |
| October 9 | $1,581.82 | -1.72% |
| October 12 | $1,487.33 | -5.97% |
| October 13 | $1,482.33 | -0.34% |
| October 14 | $1,403.34 | -5.33% |
| October 15 | $1,394.83 | -0.61% |
Sources: Stock Analysis and Investing.com.
By October 15, the stock was down 21.98% from its October 1 closing price. Measured from September 30, it had lost 19.83% in October so far.
It was also 40.76% below the $2,354.39 high reached during trading on June 22. There have been recoveries along the way, so the stock has not fallen every day since June.
Why is SanDisk stock falling?
Investors fear more competition from China
The Wall Street Journal’s October 13 report linked selling in chip stocks to reported technology progress at China’s ChangXin Memory Technologies, or CXMT.
The worry is simple: if more companies can make better memory chips, supply could increase. That could make it harder for existing chipmakers to keep charging high prices.
But CXMT and SanDisk focus on different types of memory. CXMT makes DRAM, which computers use while running tasks. SanDisk specialises in NAND flash, which stores data.
So CXMT’s progress does not prove that SanDisk has lost customers. It has added to worries about future profits across memory-chip companies. How much it will affect SanDisk remains uncertain.
Worries about AI spending are spreading
SanDisk is also being affected by selling across AI-related stocks. Investopedia reported early trading losses in memory and storage shares on October 15 as investors worried about AI spending and the money needed to fund it.
SanDisk supplies storage used in data centres. If companies slow their data-centre expansion, they could need less storage than expected. That is a risk, but a falling share price does not prove that SanDisk’s customers have already cut orders.
Why do chip prices matter so much to SanDisk?
Chip prices matter to SanDisk because higher NAND flash memory prices can boost its revenue and profits even without a similar increase in sales volume. This makes the company’s financial performance highly sensitive to changes in memory prices.
In fiscal Q4 2026, SanDisk reported $8.97 billion in revenue, up 51% from the previous quarter, alongside adjusted diluted earnings of $39.25 per share. A closer look at its results reveals that approximately two-thirds of the revenue increase came from higher prices, while the remaining one-third came from selling more products.
This dependence on pricing is also a potential risk. If memory prices stop rising or begin to decline, SanDisk’s revenue growth could slow even if demand for its storage products remains strong. Lower prices could also squeeze profit margins, particularly if production costs do not fall at the same pace.
However, SanDisk has some visibility into future demand. At its August 2026 investor day, the company said business model agreements covered approximately half of the memory capacity it expected to sell in fiscal 2027. These agreements help it plan supply and anticipate customer demand, although they do not guarantee future selling prices or profit margins.
For investors, the key question is whether rising memory prices can remain sustainable. Strong demand for data storage can support SanDisk’s business, but if prices weaken, the company may struggle to maintain the exceptional growth reflected in its latest results.
Why did SanDisk stock bounce back on October 15?
SanDisk fell to $1,276 during the day, putting it 9.07% below the previous close. It then recovered $118.83 to finish at $1,394.83, close to the day’s high of $1,397.64.
The wider US market also recovered. The Associated Press reported that AI stocks reduced their losses as trading continued. The Nasdaq ended 0.1% higher and the S&P 500 gained 0.3%.
The Wall Street Journal reported that US Treasury bond yields fell. Lower yields can make shares more attractive compared with bonds, helping create better conditions for a recovery. That does not establish the exact reason SanDisk rose from its low.
Some of SanDisk’s recovery faded after the market closed. At 7:59 p.m. EDT, MarketWatch and Stock Analysis showed the stock at $1,371.36, down another 1.68% from its regular closing price.
What should investors watch next?
SanDisk’s next earnings call is scheduled for October 29. In August, it forecast fiscal Q1 2027 revenue of 10.30 billion-10.80 billion and adjusted diluted earnings of 44-46 per share.
The key things to watch are whether customers are still placing strong orders, whether SanDisk can maintain its selling prices and what it expects for the following quarter.
Strong orders and steady prices would ease concerns about the business. Falling prices or a lower forecast would add to them.
SanDisk’s bounce shows that buyers returned as the wider market improved. A lasting recovery will depend on whether its sales and profits can continue to support investors’ expectations.
Author’s Take
SanDisk’s recent share-price decline reflects a growing gap between strong business performance and investor expectations. Higher NAND flash memory prices have supported revenue growth, but investors are questioning whether these conditions can last as competition increases and concerns about AI spending spread across the market.
The October 15 rebound offers some relief, but it does not yet signal a sustained recovery. The stock still closed 0.61% lower for the day, following five consecutive sessions of declines. The recovery from its intraday low shows that buyers returned, although the wider market’s improvement also contributed to the move.
The key factor to watch is whether SanDisk can maintain its pricing power and deliver on its earnings expectations. Competition from China remains a potential industry risk, but the impact on SanDisk’s NAND business is not yet established. Its October 29 earnings update should provide a clearer picture of demand, pricing and the outlook for fiscal 2027.
For investors, the distinction is between a short-term share-price rebound and a genuine improvement in the business outlook. Until there is stronger evidence on future memory prices, customer demand and earnings, neither a sustained recovery nor a further decline can be taken for granted.