Sandisk falls premarket despite US$11B quarter and 8-for-1 split

What happened: growth and a falling share price

Sandisk released fiscal first-quarter results on October 29 for the quarter ended October 2, 2026. Revenue reached US$11.031 billion, up 23% from the preceding quarter and 378% year over year. Management also announced an eight-for-one stock split and forecast another sequential revenue increase. All dollar amounts below are U.S. dollars, and earnings figures are pre-split. [1]

The initial market response was not a simple celebration. Yahoo Finance’s saved snapshot showed $1,228.02 at 06:15:57 ET on October 30, down $102.03, or 7.67%, from Thursday’s regular close. This is a dated premarket observation, not a live or executable quote; Friday’s regular session had not begun. [2][3]

Thursday’s $1,330.05 close was already down $74.72, or 5.32%, from October 28. Yahoo’s daily-history series counted 8,179,100 shares, versus a preceding 20-session average of 8,246,235. The chart deliberately uses only regular-session closes: Thursday’s decline preceded the earnings release, and Friday’s premarket decline is not plotted. [1][2]

Why strong results do not settle the debate

The operating growth is real in the reported numbers. Datacenter revenue reached $4.802 billion, up 61% sequentially, while Edge revenue rose 7% to $5.832 billion. Sandisk’s chief executive attributed the performance to robust product demand and particularly strong datacenter growth. This is the company’s explanation of its business, not proof of why every investor sold the shares. [1]

The revenue outlook’s $12.4 billion midpoint is about 12.41% above the reported quarter. Yet consumer revenue fell 29% sequentially to $397 million, showing that the strength is not uniform across end markets. GAAP and non-GAAP earnings also differ: reported net income included a $513 million gain on equity securities, so the two EPS measures should not be treated as interchangeable. [1]

• Demand: datacenter growth is the clearest positive driver in this report. [1]
• Durability: Sandisk identifies selling-price fluctuations, customer deployment timing and competitive pricing as risks; today’s margin is not a guaranteed future margin. [1]
• Sector context: MU fell 4.98% and WDC 0.25% in Thursday’s regular session. Those earlier moves cannot have been caused by Sandisk’s later earnings release. [4][5]

The useful distinction is between explaining the reported growth and claiming to know the entire cause of the selloff. The figures support a demand-led expansion with uneven end markets. They do not establish a single cause for Friday’s selling, or make a rebound inevitable. [1][3]

What it means for option sellers

For the wheel, the first question is the obligation being accepted, not the size of an advertised premium. A cash-secured put can require buying shares at its strike even after a further fall. A covered call limits upside while leaving most share-price downside in place; neither structure converts this earnings reaction into a low-risk income stream. [8][9]

Current post-report implied volatility and IV rank were not independently established for this article. A large stock move is not an IV measurement, and Thursday’s option quotes cannot be assumed to be Friday’s tradable premiums. The next regular-session chain needs its own timestamp, bid/ask spread, open interest and contract terms before any setup can be evaluated.

An illustrative pre-split $1,400 covered-call strike would cap the share sale price at $1,400 if assigned, with premium accounted for separately. It would not remove a decline below the owner’s purchase price. These strikes explain mechanics only: they are not recommendations, support levels or verified listings for a particular expiry. [9]

What to watch next

The broader rate backdrop still matters. The Federal Reserve kept its target range at 3.75%–4.00% on October 28 and said inflation remained elevated. Friday’s scheduled wage-cost report is therefore a separate macro checkpoint, not a confirmed explanation for Sandisk’s premarket move. [6][7]

For the company, watch whether the next quarter reaches its revenue and margin ranges without assuming that datacenter demand offsets every weakness. No next earnings-release date is confirmed here. The split is an administrative milestone; demand, pricing and cash generation remain the business tests. [1]

Hero: archival November 8, 2015 photograph of a Sandisk mSATA SSD, not current datacenter hardware or this earnings event. Photo © Raimond Spekking / CC BY-SA 4.0 (via Wikimedia Commons), cropped and resized; the adapted photograph remains under CC BY-SA 4.0. [10][11]