On August 13, SanDisk closed at 1528 in the U.S. East time zone, up about 13.7% from the previous close of 1344. After-hours trading continued to push it to around 1570. A week ago, the market was still digesting cautious guidance, yet today investors’ day “twisted” sentiment in the direction of optimism. Is this a repricing of the long-term model, or a sentiment spike that first rushes higher?
See the daily K-line structure in the chart. The market figures are from Yahoo, and the company numbers are from Sandisk’s August 13 Investors’ Day press release.
【What happened today first】
(See the cover and the accompanying image in the body; compare the blue line oscillations and the Fib dashed lines on the right.)
During regular trading hours, it opened at 1339, traded as low as 1332, hit a high of 1581, and closed at 1528. Volume was about 21.65 million shares, clearly higher than the roughly 15.68 million average volume over the past ten days and also higher than the about 13.38 million longer-period average volume. The after-hours quote was around 1570, about 2.7% higher than the close.
The driver came from the New York Investors’ Day, not from a new quarterly earnings report. The company laid out a long-term financial framework for FY2028 to FY2030, and wove AI storage, long-term customer agreements, and cash returns into the same narrative.
【What investors’ day emphasized】
A few of the most eye-catching points in the press release can be noted first.
Revenue growth targets are in the high-teens to low double-digits range, roughly in the same direction as bit growth. For non-GAAP, the gross margin is expected to be maintained around 80%, non-GAAP operating margin around 75%, and the expense ratio kept around 5% of revenue. The target for adjusted free-cash-flow profit margin is about 50%. After investing in the business, management intends to return 100% of any excess cash to shareholders.
On the business model, the company emphasizes the New Business Model with long-term agreements. It has already signed up eight customers, representing about half of FY2027 bit volume, and about two-thirds for FY2028. The official explanation is that commitment volumes, minimum financial protections, and structured pricing reduce volatility across the traditional NAND cycle.
On the technology side, it also mentions the BiCS roadmap, data-center flash TAM of about 1.2 ZB by 2030, and high-bandwidth flash narratives such as HBF. These are more mid-to-long-term industry stories. The after-hours “pulse” is mainly still repricing the financial model and the visibility of long-term deals.
【Don’t forget last week’s ‘knife】
The Aug 5 after-hours earnings report itself wasn’t bad. Adjusted EPS was about 39.25, above the then-expected ~34.52, and it also came with about $14 billion of share repurchase authorization. The market got stuck on the guidance: next-quarter revenue was around $10.3 billion to $10.8 billion, with pricing relatively cautious, and the price target was subsequently cut.
As a result, on Aug 6 it bottomed around 1163 and closed at 1259. Over the following days it churned between roughly 1190 and 1280. On Aug 11 it closed at 1271, and on Aug 12 at 1344—only then did the post-earnings-guidance volatility slowly grind higher. Today, a single bullish candle jumped above the Aug 4 high of about 1447, and it also diluted, to some extent, the market’s price-memory of the panic around last week’s guidance.
So today’s rally is more like a short-term expectation switch from “next-quarter guidance is a bit soft” to “the FY2028–FY2030 model is more robust.” Because the time horizons differ, people who can’t connect the dots may feel like they’ve been slapped in the face from one moment to the next.
【How to read the after-hours move in the K-line】
Starting from the July 29 low of about 998, to the Aug 4 close of 1428, it took five days and nearly clawed back 40%—that was sentiment repair following panic. The earnings report and guidance “bled” that profit back to a large extent. Now Investors’ Day has sent the price back above 1500, and after-hours it even tested the 1570 area. In terms of structure, it looks more like an end to the post-gap consolidation and a renewed acceleration of trend; simply filling the gap no longer fully explains it.
The key observation levels can be organized into four tiers.
Up top, first look at the intraday high of 1581. If around 1570 in after-hours can hold up at the open and stand firm during the regular session tomorrow morning, it suggests overnight follow-through is still in play. Only then does it make sense to talk about challenging even higher sentiment levels. The 52-week high is still around 2354—far away—so don’t treat distant ceilings as tomorrow’s target.
In the middle, the close at 1528 is today’s long/short dividing line. If tomorrow morning it quickly drops back below 1528, then the after-hours premium should be treated first as an exaggeration.
Below that, the prior high area from 1447 to 1428 becomes the first pullback observation zone. Next, look at 1344, which is the Aug 12 closing price. If this breaks, the “golden value” of today’s Investors’ Day bullish move will be discounted.
The deeper level is 1163. That was the low on the day after the earnings release. Unless sentiment fully reverses, there’s no need to focus on it for the short-term narrative just yet—but if it fails, it’s still on the map.
On valuation, Yahoo’s rolling P/E is about 21x, and the forward P/E is about 5.8x. Market cap is around $223 billion. The forward multiple embeds the optimistic model in advance. Whether the model can be realized matters more than the additional 2 to 3 percentage points gained after hours.
【How to use the after-hours move】
The after-hours push around 1570 only indicates that buyers didn’t immediately disappear on the night of Investors’ Day. Proper confirmation requires the regular-session close on Aug 14.
If the open retraces to and holds between 1528 and 1447, the bullish bias can be watched and confirmation can be waited for—don’t chase the first overnight impulse.
If it immediately slams back below 1344, it suggests today is more like single-day sentiment pricing; handle it as a post-peak pullback first.
Only if the close continues to stand above 1581 and volume expands can you discuss trend continuation. For a one-off announcement-driven行情 assumption, that’s when it would hold.
Do you believe more in the FY2028–FY2030 story of 80% gross margin and 50% free cash flow, or are you more concerned that someone has bought the long-term thesis in one go with short-term hype?
$SNDK #闪迪 #美股盘后 #Investors’ Day
Captain Dragonfly｜A finance blogger who likes analyzing data and K-lines.
Not investment advice. The company’s goal is forward guidance; after-hours liquidity is thin, so level confirmation should be made by the regular-session close.
See the daily K-line structure in the chart. The market figures are from Yahoo, and the company numbers are from Sandisk’s August 13 Investors’ Day press release.
【What happened today first】
(See the cover and the accompanying image in the body; compare the blue line oscillations and the Fib dashed lines on the right.)
During regular trading hours, it opened at 1339, traded as low as 1332, hit a high of 1581, and closed at 1528. Volume was about 21.65 million shares, clearly higher than the roughly 15.68 million average volume over the past ten days and also higher than the about 13.38 million longer-period average volume. The after-hours quote was around 1570, about 2.7% higher than the close.
The driver came from the New York Investors’ Day, not from a new quarterly earnings report. The company laid out a long-term financial framework for FY2028 to FY2030, and wove AI storage, long-term customer agreements, and cash returns into the same narrative.
【What investors’ day emphasized】
A few of the most eye-catching points in the press release can be noted first.
Revenue growth targets are in the high-teens to low double-digits range, roughly in the same direction as bit growth. For non-GAAP, the gross margin is expected to be maintained around 80%, non-GAAP operating margin around 75%, and the expense ratio kept around 5% of revenue. The target for adjusted free-cash-flow profit margin is about 50%. After investing in the business, management intends to return 100% of any excess cash to shareholders.
On the business model, the company emphasizes the New Business Model with long-term agreements. It has already signed up eight customers, representing about half of FY2027 bit volume, and about two-thirds for FY2028. The official explanation is that commitment volumes, minimum financial protections, and structured pricing reduce volatility across the traditional NAND cycle.
On the technology side, it also mentions the BiCS roadmap, data-center flash TAM of about 1.2 ZB by 2030, and high-bandwidth flash narratives such as HBF. These are more mid-to-long-term industry stories. The after-hours “pulse” is mainly still repricing the financial model and the visibility of long-term deals.
【Don’t forget last week’s ‘knife】
The Aug 5 after-hours earnings report itself wasn’t bad. Adjusted EPS was about 39.25, above the then-expected ~34.52, and it also came with about $14 billion of share repurchase authorization. The market got stuck on the guidance: next-quarter revenue was around $10.3 billion to $10.8 billion, with pricing relatively cautious, and the price target was subsequently cut.
As a result, on Aug 6 it bottomed around 1163 and closed at 1259. Over the following days it churned between roughly 1190 and 1280. On Aug 11 it closed at 1271, and on Aug 12 at 1344—only then did the post-earnings-guidance volatility slowly grind higher. Today, a single bullish candle jumped above the Aug 4 high of about 1447, and it also diluted, to some extent, the market’s price-memory of the panic around last week’s guidance.
So today’s rally is more like a short-term expectation switch from “next-quarter guidance is a bit soft” to “the FY2028–FY2030 model is more robust.” Because the time horizons differ, people who can’t connect the dots may feel like they’ve been slapped in the face from one moment to the next.
【How to read the after-hours move in the K-line】
Starting from the July 29 low of about 998, to the Aug 4 close of 1428, it took five days and nearly clawed back 40%—that was sentiment repair following panic. The earnings report and guidance “bled” that profit back to a large extent. Now Investors’ Day has sent the price back above 1500, and after-hours it even tested the 1570 area. In terms of structure, it looks more like an end to the post-gap consolidation and a renewed acceleration of trend; simply filling the gap no longer fully explains it.
The key observation levels can be organized into four tiers.
Up top, first look at the intraday high of 1581. If around 1570 in after-hours can hold up at the open and stand firm during the regular session tomorrow morning, it suggests overnight follow-through is still in play. Only then does it make sense to talk about challenging even higher sentiment levels. The 52-week high is still around 2354—far away—so don’t treat distant ceilings as tomorrow’s target.
In the middle, the close at 1528 is today’s long/short dividing line. If tomorrow morning it quickly drops back below 1528, then the after-hours premium should be treated first as an exaggeration.
Below that, the prior high area from 1447 to 1428 becomes the first pullback observation zone. Next, look at 1344, which is the Aug 12 closing price. If this breaks, the “golden value” of today’s Investors’ Day bullish move will be discounted.
The deeper level is 1163. That was the low on the day after the earnings release. Unless sentiment fully reverses, there’s no need to focus on it for the short-term narrative just yet—but if it fails, it’s still on the map.
On valuation, Yahoo’s rolling P/E is about 21x, and the forward P/E is about 5.8x. Market cap is around $223 billion. The forward multiple embeds the optimistic model in advance. Whether the model can be realized matters more than the additional 2 to 3 percentage points gained after hours.
【How to use the after-hours move】
The after-hours push around 1570 only indicates that buyers didn’t immediately disappear on the night of Investors’ Day. Proper confirmation requires the regular-session close on Aug 14.
If the open retraces to and holds between 1528 and 1447, the bullish bias can be watched and confirmation can be waited for—don’t chase the first overnight impulse.
If it immediately slams back below 1344, it suggests today is more like single-day sentiment pricing; handle it as a post-peak pullback first.
Only if the close continues to stand above 1581 and volume expands can you discuss trend continuation. For a one-off announcement-driven行情 assumption, that’s when it would hold.
Do you believe more in the FY2028–FY2030 story of 80% gross margin and 50% free cash flow, or are you more concerned that someone has bought the long-term thesis in one go with short-term hype?
$SNDK #闪迪 #美股盘后 #Investors’ Day
Captain Dragonfly｜A finance blogger who likes analyzing data and K-lines.
Not investment advice. The company’s goal is forward guidance; after-hours liquidity is thin, so level confirmation should be made by the regular-session close.