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Options Trading Spotlight | Storage Sector Soars! SanDisk's Shares Surge 21% Post-Earnings in After-Hours Trading; Some Option Traders Make 5x Returns! Is There Still Opportunity?

This article comes from the 'Options Market Insights' column, which aims to position itself at the forefront of investment trends, providing readers with insights into market opportunities and teaching them how to seize these opportunities using options. If you are interested, feel free to subscribe.Click hereUpon joining the learning platform, you will receive notifications when subsequent columns are updated.

*The following content is for investment education purposes only, does not represent any investment advice, and the information has timeliness. Data as of before the US stock market open on January 30; please exercise caution.*

The storage sector has been extremely hot recently. Today, we must highlight SanDisk, which just released its earnings and saw a significant surge in after-hours and overnight trading. $SanDisk (SNDK.US)$ 。

1. Behind the better-than-expected earnings, SanDisk’s strategic narrative is changing.

$SanDisk (SNDK.US)$ The report card for the second quarter of the 2026 fiscal year, released after the market closed yesterday (January 29), was very impressive.Revenue and profits not only significantly surpassed the company's previous forecasts but also beat all Wall Street analysts' expectations.

Quarterly revenue reached $3.025 billion, up 31% sequentially and 61% year-over-year, significantly higher than the guidance range of $2.55 billion to $2.65 billion provided earlier by the company. It also greatly exceeded market consensus (approximately $2.68-$2.69 billion).

GAAP gross margin reached 50.9%, a substantial increase of 21.1 percentage points from the previous quarter. Non-GAAP gross margin also hit 51.1%. This high level of gross margin reflects the combined impact of supply and demand tensions in the NAND flash memory market, rising prices, and an increased proportion of high-value products.

The key point is that this growth engine isn't driven by selling more units, but by selling more expensive and higher-end products. Shipment volumes grew slightly, but average selling price (ASP) surged over 30%. Meanwhile, revenue from the high-margin data center business skyrocketed 64%, with the product mix rapidly shifting toward more profitable segments.

Management provided a highly optimistic forecast for the next quarter, further strengthening market confidence. The company expects revenue in the next quarter to be between $4.4 billion and $4.8 billion, with non-GAAP earnings per share projected at $12.00 to $14.00—far exceeding the pre-earnings market expectation of around $2.6 billion.

This strong performance received a positive market reaction. Following the earnings release, the company’s stock price surged significantly in after-hours trading, with gains reaching as high as approximately 21% as of this writing. Year-to-date, as of the earnings announcement date, the stock price has cumulatively risen 127%, making it one of the best-performing stocks in the S&P 500 index for 2025.

More important than the impressive numbers is the fact that the company is attempting to transition from its past narrative as a cyclical stock heavily influenced by industry cycles, towards becoming a critical infrastructure enterprise with long-term pricing power and stable cash flow.This transformation is built on three pillars:

First, pricing power: Market undersupply (especially due to AI demand) allows the company to proactively raise prices. Guidance for the next quarter reveals that even with expected shipment volumes slightly declining, the company is confident in pushing gross margins to 65%-67%, relying entirely on price increases and product mix optimization.

Second, a shift in demand structure: AI-driven data center demand is experiencing step-like growth. The company forecasts that this market will become the largest application for NAND by 2026, providing a long-term structural foundation for growth.

Third, a reshaping of the business model: The company is actively promoting multi-year supply agreements with customers, along with upfront payments. This aims to transform volatile quarterly orders into predictable long-term commitments, stabilizing future cash flows and reducing earnings volatility.

If the new strategy succeeds, it may change the market's valuation logic for Western Digital.Looking ahead, its data center demand forecast has been continuously revised upward, and new technology demands like NVIDIA’s KV Cache have yet to be fully factored in, indicating further upside potential.

However, risks remain. The key to whether this transformation will succeed lies in how long the current seller’s market structure can be maintained and how many key customers are willing to accept the new long-term contract model. If supply and demand reverse or if agreements progress slowly, the current optimistic expectations will face challenges.

2. Buying Calls the day before earnings release—did someone quietly make 5x their money?

ThroughSNDK Stock Details > Options > Option RankingsFollowing this path, we can see that on January 29, there were options with notable trading volumes, mostly call options (Calls) expiring on January 30 after the earnings release. Clearly, many investors were betting on a rise in the stock price before the earnings announcement.

Taking SNDK 260130 600C as an example, let’s roughly calculate how much profit investors who bought this option would realize.

This option was priced at a low of $3.6 and a high of $10.32 on January 29, closing at $8.6. A relatively moderate value, such as $7, can be taken for estimation purposes.

So, by the time the market opens on January 30th, what will be the price of this options contract? ThroughSNDK stock details page > Options > Options ranking > Details page for this option > Scroll down to enter the options price calculator, a simple calculation can be done (actual values may be higher or lower).

Assuming the price after the market opens is calculated at $645, implied volatility (IV) might experience a sudden sharp drop, assuming it falls to around 100% as seen earlier in January. Then, the theoretical price of the option would be approximately $45.

From $700 per contract to $4,500 per contract, that’s a whopping gain of $3,800 on this single option, with a return rate of about 543%! The characteristic of options to leverage small amounts for big gains is fully demonstrated here.

If you've been following the recent performance of other storage concept stocks, you would know that SK Hynix, $Seagate Technology (STX.US)$ 、 $Western Digital (WDC.US)$ have recently submitted strong earnings reports to the market. Moreover, the production capacities of major storage suppliers (such as Micron, SK Hynix, and Samsung) have already been fully booked through 2026, and they have started negotiating orders for 2027.

Going a step further, we understand that AI has moved from the 'training' phase into the 'inference' phase, causing an explosive growth in demand for High Bandwidth Memory (HBM), completely altering the traditional cyclical logic of the storage industry. Thus, the market naturally holds relatively optimistic expectations for $SanDisk (SNDK.US)$ 's earnings this time around.

As for why this opportunity wasn't seized by you, there could be several reasons behind it.

It’s possible that you haven’t paid attention to these market dynamics or don’t quite understand the underlying logic. This requires you to be more proactive in participating in the market and more dedicated to analyzing and understanding industry logic. Follow more of Option Sir and Niuniu Classroom content!

It’s also possible that you don’t understand options and have no idea how to trade. In fact, if used properly, options can become a very practical tool for you, helping upgrade your perception and break out of the cycle of merely guessing market ups and downs, adding a sense of security to your investments.

Because we noticed that many fellow investors face bottlenecks when investing in stocks and feel lost wanting to switch to options, we recently launched the 'Beginner's Guide to Options Trading' column to help new options traders cultivate their mindset, enhance their understanding, and practically seize opportunities. We hope to accompany you on a path to continuous improvement. If you’re interested, you're welcome to join.Click hereUpon joining the learning platform, you will receive notifications when subsequent columns are updated.

It’s also possible that you understand options but were discouraged by $SanDisk (SNDK.US)$ the high cost of options. Because it’s hard to bear the risk of potentially losing all principal, choosing not to participate is very reasonable and normal. However, the result is missing out on this opportunity.

Is there any solution? If you can't afford the expensive ones, look at some cheaper alternatives. You can pay attention to low-cost, low-priced options, which, if judged correctly, can offer significant profit opportunities — though you must be mentally prepared to lose all your principal. Check out Option Sir's recent article on starting with small capital: 'Beginner's Guide to Options Trading | Using Popular Symbols RDW, ONDS as Examples: Opening Your First Option for Less Than $100'》。

Or perhaps you know there might be an opportunity here but feel the market is unpredictable, whether up or down, so you choose not to participate. That’s fine too as long as you make investment decisions based on your own logical judgment. Missing this opportunity doesn’t matter; there will always be another one. Your core trading system itself should provide you with continuous stability.

3. Finally, let’s discuss the storage industry logic, outlook, and strategy.

The current storage industry is undergoing a fundamental transformation driven by AI. The core shift is from AI work moving from 'training' to 'large-scale inference,' triggering a structural surge in demand. Traditionally, the storage industry has been deeply affected by the cyclical nature of consumer electronics like smartphones and PCs, making it a highly cyclical sector. However, AI has completely changed this logic:

● Changes on the demand side:AI inference requires low-latency, high-throughput reading of pre-trained massive model parameters. This is driving enterprise-grade solid-state drives (SSDs) to evolve from traditional data storage devices into a key storage layer within AI servers used for hosting and quickly invoking model parameters. This new demand, driven by AI inference workloads, is both structural and long-term, becoming a core engine for growth in the storage market.

● Discipline on the supply side:Unlike the past cyclical pattern of 'price increases - aggressive capacity expansion,' this round sees major memory manufacturers exercising more rational capital expenditures with cautious capacity expansion. At the same time, technological upgrades to more advanced processes (such as SNDK's BiCS8) and new architectures (such as STX's HAMR Mozaic technology) objectively limit short-term capacity bursts, helping maintain tight supply-demand balance and price stability.

● Business models are also upgrading:Industry leaders are actively promoting multi-year long-term agreements with customers to replace traditional quarterly pricing negotiations, significantly improving future cash flow visibility and stability, and driving a shift in valuation models from cyclical stocks to growth-oriented infrastructure stocks.

● Confirmation of an industry cycle rebounding from its trough: Several companies have reported significant quarter-over-quarter and year-over-year earnings growth over multiple quarters, issuing strong guidance, strongly indicating that the storage industry has emerged from its downturn and entered a new upward cycle driven by AI.

Looking ahead, although the industry overall is in a strong upward cycle, the focus varies across different time horizons:

● Short-term (1-3 months):High market sentiment and technical adjustments may coexist. The stock price has seen a significant short-term rise, with the technical indicators showing severe overbought conditions, compounded by market volatility, making profit-taking likely. Key observations include whether the stock price breaks below critical moving averages and shifts in overall market risk appetite.

● Mid-term (6-12 months):The business model remains unproven. Market focus is shifting from price hikes to the implementation specifics of long-term agreements (LTAs). If more LTAs with upfront payments can be successfully signed, valuations will increase further; otherwise, the stock price may pull back. Closely monitor disclosures regarding the quantity and quality of LTA signings in subsequent earnings reports of leading companies.

● Long-term (more than 1 year):Whether structural growth can materialize depends on the sustainability of AI inference demand and the extent to which sluggish traditional consumer electronics demand weighs down the sector. The industry aims for data centers to replace mobile devices as the largest application market for NAND flash memory by 2026. Watch global AI capital expenditure and data center exabyte demand growth figures to validate this long-term growth thesis.

In terms of specific investment advice:

If you already hold related stocks, it is recommended to establish a trailing stop discipline (e.g., using the 20-day moving average as a reference) to lock in partial profits promptly and manage short-term high volatility. If you do not currently hold these stocks, avoid chasing highs; instead, wait for a pullback to key support levels before deploying capital in batches. You can also consider relatively lagging but still positively exposed stocks within the sector to diversify risks.

In a highly volatile environment, options may serve as an effective tool to help manage risk and enhance returns.

● Conservative strategy (Covered Call): If you hold the underlying stock and believe the short-term upward momentum will slow, you can sell out-of-the-money call options to collect premiums, thereby increasing income or hedging against potential pullbacks.

● Aggressive strategy (Bull Call Spread): If you remain bullish but are concerned about individual stock volatility or expensive option prices, you can buy a call option at one strike price while selling another call option at a higher strike price. This allows you to lock in upside gains at a lower cost while capping maximum losses.

● Event-driven strategy: Before major events such as earnings, implied volatility (IV) tends to rise, which can drive up options prices. Directional positions can be established based on earnings expectations, but beware of the risk of a sharp drop in IV after the event.

Alright, that's it for today. Welcome.Click hereJoin the learning group, and you will receive notifications when new updates to the column are published. We also strongly welcome any specific content suggestions!

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