Memory stocks in 2026: MU, SNDK, SK hynix, WDC and STX by crowd sentiment

The five big US-listed memory and storage stocks are Micron, SanDisk, SK hynix (through its ADR), Western Digital and Seagate. All five fell between 12% and 25% over the past month, and the accounts we track kept calling each of them higher, by more than two to one.

In August those accounts split hard on the group, bullish on Micron and bearish on Western Digital. Since then they have come back together on four of the five, and Seagate still trails.

The memory stocks, ranked by crowd sentiment

Calls over the 30 days to October 21, 2026, with each name's seven-day signal score as of today.

	Calls	Bull : Bear	Trusted	Score	1 month	Off 2026 high
SanDiskSNDK	210	152 : 43	40%	78	-23.8%	-41.5%
SK hynixSKHY	113	84 : 25	18%	75	-25.4%	-29.6%
MicronMU	1,021	620 : 267	26%	72	-11.8%	-26.2%
Western DigitalWDC	63	41 : 15	11%	71	-17.5%	-51.2%
SeagateSTX	44	28 : 13	14%	53	-21.4%	-38.3%

Micron drew more calls than the other four combined. SanDisk has the strongest backing from accounts with a measured track record, 40% of its calls against 11% to 26% for the rest, and it tops the table on score. Western Digital flipped: in August it ran 27 bearish to 13 bullish and scored 37, and now it runs 41 to 15 the other way and scores 71, at about half its June high.

Seagate is the outlier: the lowest score at 53 and the narrowest bullish lead, 28 calls to 13.

August: when the crowd split on memory

Memory was the loudest story in the market that month: an AI-driven chip shortage, Samsung's co-CEO calling the squeeze unprecedented, and the best-performing corner of 2026 to that point. Most coverage treated it as one trade. The accounts we track split on the names inside it in late July, and the four scores we printed on August 12 ran from 86 down to 35.

Four names, four different readings in August

Between July 27 and August 11 we logged directional calls on the four big US memory and storage names, alongside the score each one had on August 12.

	Calls	Bullish	Bearish	Trusted share	Score (7d, Aug 12)
MicronMU	319	201	59	24%	86
SanDiskSNDK	375	140	126	23%	83
Western DigitalWDC	53	13	27	23%	37
SeagateSTX	23	9	11	57%	35

"Trusted share" is the percentage of those calls that came from accounts with a measured track record of being right. The last column is our social sentiment score: a credibility-weighted reading of the past seven days of conversation, as printed on August 12. We store the current score and not its history, so these are the values we published that morning, not a reconstruction.

Same sector, same shortage, same headlines, and the readings run from 86 down to 35. If you hold memory as one position, the coverage gives you no warning that the accounts with records had split on the names inside it.

Micron stock sentiment: a supply thesis with specifics

Micron drew 319 calls in the window, running 201 bullish to 59 bearish, about three and a half to one. Among accounts scoring a full 1.00 on credibility, one supported the supercycle thesis on long-term contracts and high-bandwidth memory, arguing earnings had not peaked. Another made the case on free cash flow and revenue rather than on the near-term tape.

Both of them staked out a position on contracted supply rather than spot pricing, which is the kind of position you can be caught wrong on in public.

Western Digital stock sentiment: the mirror image

Western Digital drew 53 calls, running 27 bearish to 13 bullish. Fifty-three is a modest count, so read it as what our tracked accounts said about Western Digital rather than as a measure of everyone. These accounts ran Micron's argument backwards:

• July 27: an account arguing memory stocks would not lead the next market advance.
• July 28: an account reporting that shorts on Western Digital had been working.
• August 7: the memory theme described as looking iffy.
• August 9: a position sold ahead of Western Digital's own earnings, on a bearish view of the sector.

Some of these were early. Western Digital bounced through the end of July before it broke, so the account that turned bearish on July 28 spent a week looking wrong before the direction came back to them.

Then the prices separated

The whole sector came off its July 23 high, so falling alone distinguishes nothing. The second leg is where the names split. From August 4 to August 11:

	Jul 23 to Aug 11	Aug 4 to Aug 11
MicronMU	-12.3%	-2.7%
SeagateSTX	-10.2%	-2.9%
SanDiskSNDK	-21.1%	-11.0%
Western DigitalWDC	-21.6%	-20.2%

Micron and Seagate went roughly flat over that week. Western Digital lost a fifth of its value, closing at $548.56 on August 4 and $437.93 on August 11.

The largest single day of Western Digital chatter in the window was August 6, running 15 bearish to 8 bullish, and the stock closed down 13% that day. Our mention days are rolling 24-hour windows rather than calendar days, so that bar spans the evening before and the morning of the drop. Treat it as reaction. The two weeks of bearish calls sitting in front of it are the part that had to be called in advance.

SanDisk stock sentiment: a 140-to-126 split

SanDisk was the loudest name in the sector at 375 calls, more than Micron. It was also the only one where the crowd deadlocked: 140 bullish against 126 bearish, close to even. On August 6 alone it drew 50 bullish and 55 bearish calls.

That deadlock is a different state from Micron's three-and-a-half-to-one agreement, and a volume number cannot tell the two apart, because SanDisk was the most talked-about memory stock and the least agreed-upon one at the same time. It traded like it, down 21.1% from the July high with a 25% bounce off its July 29 low in the middle.

Where the sector narrative broke down

"Memory stocks are ripping" was a true sentence in July, and it stopped describing the four names the moment they quit moving together. The accounts with records stayed bullish on Micron's supply thesis, turned on Western Digital, and deadlocked over SanDisk. Read as a sector, all of that averages out to nothing.

You will not find the distinction in a sector heat map or in a mention count. It shows up when you weight who is talking by whether they have been right before, then read the names one at a time. Three weeks on we graded these four scores against the tape: the memory split, three weeks later.

See the current reading on any of these five in Quantral: the score, every call behind it, and the track record of the account that made it.

The ranking table covers calls from the accounts Quantral tracks over the 30 days to October 21, 2026; scores are the seven-day reading as of that date, and prices are closes through October 20 (1 month = September 18 close). The August sections cover July 27 to August 11, 2026, bucketed by rolling 24-hour windows, with scores as published on August 12, 2026. Positions attributed to accounts are their stated views, not Quantral's. Quantral surfaces signals and context from public sources to support your own research. Nothing here is financial advice or a recommendation to buy or sell. Past signals are not indicative of future results.