$SNDK #Gate广场中秋团圆局 Up 11% overnight! Why has SanDisk become the strongest chip stock in U.S. equities?
At Friday's close on September 18, Eastern Time, SanDisk (SNDK) stood at $1,791.82, surging 10.99% in a single day.
What does that mean?
The day's trading value reached $31.08 billion, with a turnover rate of 12.15% and a volume ratio of 2.13. The PHLX Semiconductor Index rose 2.78%, while within the entire storage sector, SanDisk was the strongest performer—Seagate rose 6.93%, Western Digital gained 4.13%, and SK hynix climbed 2.46%; all had to take a back seat.
Even more astonishing is its performance in September: it rose 11.9% on September 4, then fell for three consecutive days on September 10, 11, and 14 (-4.06%, -3.5%, and -4.98%), rebounded 6.21% on September 17, and then surged another 11% on September 18. It recovered all its losses within a week and approached its previous high. This isn't a stock—it's a roller coaster.
I. Core reason for the surge: NAND prices are still rising
The strongest support for SanDisk's rally is that the storage price upcycle is still moving higher.
NAND wafer spot and contract prices are continuing to rise, industry inventories are at low levels, and demand for storage driven by AI continues to be released, with the supply-demand gap widening.
The clearest signal is this: Samsung raised prices for Apple by 30%-40%, and Apple accepted it. Even a customer with bargaining power as strong as Apple's accepted the price increase, showing that the shortage in this storage cycle is genuine, not just talk. As a core NAND player, SanDisk sits directly at the top of the price-increase chain.
II. Technical upside: CBA bonding + HBF
In addition to rising prices, SanDisk has gained another new narrative over the past two days.
It was the first to mass-produce the CBA bonding architecture, delivering a notable performance boost; meanwhile, its HBF technology for AI inference storage is viewed by the market as the next growth driver. This combination has made institutions willing to assign it a higher valuation—some have already raised their price target to $2,200. For tech stocks, strong earnings alone are not enough; they also need "imagination." CBA and HBF fill that gap.
III. Both capital flows and fundamentals are providing support
In terms of capital flows, JPMorgan data shows that retail investors made net purchases of approximately $202 million in SanDisk in mid-September, with money concentrating in core AI assets.
The fundamentals are even more remarkable: Revenue in the latest quarter surged 371.6% year over year, while the net profit margin reached as high as 77%. The company also provided guidance—revenue for fiscal 2027 and 2028 is expected to reach $53.15 billion and $71.04 billion, respectively. A 77% net profit margin is practically a "money-printing machine"-level figure in hardware manufacturing.
IV. The broader environment: Rate hikes delivered, capital returning to AI
One more backdrop cannot be ignored: On Wednesday, the Federal Reserve completed its first rate hike in three years, raising interest rates to 3.75%-4.00%. It sounds bearish, but the market actually breathed a sigh of relief—the uncertainty had been removed. The Nasdaq rose 0.39% that day, and capital returned to the AI sector. Despite the pressure from the Fed's rate hike and Treasury yields briefly surpassing 5%, tech stocks were still leading the gains, showing that the market's confidence in AI profitability remains strong.
One final reminder: SanDisk's current story is highly compelling: AI demand + rising storage prices + technological upgrades + high profitability, forming a fairly complete logical chain.
But remember—a stock that rises 11% in one day can also fall 5% in one day. Its three consecutive days of declines in mid-September are a ready example. In addition, the Fed's rate-hike cycle may only just be beginning, and institutions expect another hike may come in October, amplifying volatility in high-valuation growth stocks.$SNDK
At Friday's close on September 18, Eastern Time, SanDisk (SNDK) stood at $1,791.82, surging 10.99% in a single day.
What does that mean?
The day's trading value reached $31.08 billion, with a turnover rate of 12.15% and a volume ratio of 2.13. The PHLX Semiconductor Index rose 2.78%, while within the entire storage sector, SanDisk was the strongest performer—Seagate rose 6.93%, Western Digital gained 4.13%, and SK hynix climbed 2.46%; all had to take a back seat.
Even more astonishing is its performance in September: it rose 11.9% on September 4, then fell for three consecutive days on September 10, 11, and 14 (-4.06%, -3.5%, and -4.98%), rebounded 6.21% on September 17, and then surged another 11% on September 18. It recovered all its losses within a week and approached its previous high. This isn't a stock—it's a roller coaster.
I. Core reason for the surge: NAND prices are still rising
The strongest support for SanDisk's rally is that the storage price upcycle is still moving higher.
NAND wafer spot and contract prices are continuing to rise, industry inventories are at low levels, and demand for storage driven by AI continues to be released, with the supply-demand gap widening.
The clearest signal is this: Samsung raised prices for Apple by 30%-40%, and Apple accepted it. Even a customer with bargaining power as strong as Apple's accepted the price increase, showing that the shortage in this storage cycle is genuine, not just talk. As a core NAND player, SanDisk sits directly at the top of the price-increase chain.
II. Technical upside: CBA bonding + HBF
In addition to rising prices, SanDisk has gained another new narrative over the past two days.
It was the first to mass-produce the CBA bonding architecture, delivering a notable performance boost; meanwhile, its HBF technology for AI inference storage is viewed by the market as the next growth driver. This combination has made institutions willing to assign it a higher valuation—some have already raised their price target to $2,200. For tech stocks, strong earnings alone are not enough; they also need "imagination." CBA and HBF fill that gap.
III. Both capital flows and fundamentals are providing support
In terms of capital flows, JPMorgan data shows that retail investors made net purchases of approximately $202 million in SanDisk in mid-September, with money concentrating in core AI assets.
The fundamentals are even more remarkable: Revenue in the latest quarter surged 371.6% year over year, while the net profit margin reached as high as 77%. The company also provided guidance—revenue for fiscal 2027 and 2028 is expected to reach $53.15 billion and $71.04 billion, respectively. A 77% net profit margin is practically a "money-printing machine"-level figure in hardware manufacturing.
IV. The broader environment: Rate hikes delivered, capital returning to AI
One more backdrop cannot be ignored: On Wednesday, the Federal Reserve completed its first rate hike in three years, raising interest rates to 3.75%-4.00%. It sounds bearish, but the market actually breathed a sigh of relief—the uncertainty had been removed. The Nasdaq rose 0.39% that day, and capital returned to the AI sector. Despite the pressure from the Fed's rate hike and Treasury yields briefly surpassing 5%, tech stocks were still leading the gains, showing that the market's confidence in AI profitability remains strong.
One final reminder: SanDisk's current story is highly compelling: AI demand + rising storage prices + technological upgrades + high profitability, forming a fairly complete logical chain.
But remember—a stock that rises 11% in one day can also fall 5% in one day. Its three consecutive days of declines in mid-September are a ready example. In addition, the Fed's rate-hike cycle may only just be beginning, and institutions expect another hike may come in October, amplifying volatility in high-valuation growth stocks.$SNDK