SNDKSanDisk Corp
12Bull0Bear24Mention
Serenity @aleabitoreddit
Focused on AI photonics and semiconductor supply chains — sourcing asymmetric setups from bottoms-up value-chain research. Tracks CPO & optical modules closely, with ongoing deep-dives on SIVE, AAOI, LITE, POET.
Quick verdict
SNDK is net bullish (12 bull · 0 bear)
Benefits from AI capex flow, driving demand for memory components.
Last spoke: 09/05/2026, 08:11 · conviction 4/10
8-10 confidence views use larger markers▲ Bull▼ Bear● Mention
View History (36, newest first)
- Now that $MU to $SNDK have pulled a major recovery. Good to have a reminder that the memory bottleneck hasn’t changed! Same with CW lasers… substrates… or others. But short term sentiment (depending on prices/macro) often does. I think a lot of demand imbalances get worse than people expect: - There’s some Japanese distributors in Nikkei today saying memory demand deficit has reached 40-60% (67-150% higher than supply). With general prices going up 50% by years end. - $SPCX isn’t included in the $1.3T hyperscaler capex figures (I think Wells Fargo ets. ~$263b AI capex), so total capex figures might be surprising. - $SNDK expects 80% gross margins to continue into 2030… (welcome to S&P 100) - and once again you have long term visibility into 2031 now with companies like Samsung Memory is very really volatile… some of my positions are up 270%+, so I find it a bit easier to hold through volatile periods. But regardless, operating fundamentals doesn’t always align with short term price movements. Same concept can be applied to other sectors.
- @mykwantitative Yep, probably that as well in a similar window. Seeing $SNDK go vertical at close was interesting
- @abbysuyuyan $AAOI is actually the one stock I'm hoping goes back to $80 so I can acquire more. The demand visibility is pretty insane for laser names throughout 2027... Same can be said with neoclouds like $NBIS or memory names like $SNDK.
- @RancicYaro4064 Japanese companies try to match industry rates, but they don't go out of their way to hike aggressively like 70% Q/Q... There just needs to be a $SNDK in the industry to lead the way imo, maybe Samsung can be more aggresive here
- I’m not sure how to tell people this… but the NAND/MLCCs/InP bottleneck doesnt disappear if $SNDK or Murata or $AXTI drops in price. Same group of folks who only look at price volatility on earnings release to see if it’s good or not. Probably better to look at the actual earnings report or what’s actually happening…
- Uhh I mainly just increased MLCC positions rather than NAND exposure personally. Since MLCC prices/tightening resembles the early NAND hike cycle… if your passive component players want to tag along $SNDK path. Just saying it shows resemblance, but I’m not sure we’ll get something as extreme. Will need to wait a quarter or two.
- Just some more demand imbalance visibility for $SNDK, $SKHY, $MU, Kioxia, and your NAND players. Phison CEO: "2027 capacity constraints will be even more severe than in 2026." "Upstream suppliers need up to 4 years from plant construction and equipment investment to actual production. With demand growing explosively and supply expansion limited, the NAND shortage is likely to last for years." Don't quite think I agree with the people claiming it's all over for memory, esp. NAND bottlenecks in 2026...
- My memory bags are decently heavy, thank you for asking. Just out of curiosity, you think 16+ long term agreements with $MU. And $SNDK 80% gross margin projections through fiscal 2030 is a cyclical commodity? (their LTAs already cover majority of 2028 output). This is quite a long cycle if you ask me...
- @optionsreaper His ideas would have played out anyway with $SNDK or $BE even without anyone from retail knowing he existed. Retail wouldn't have changed a thing with NAND shortages or hyperscaler demand for Bloom. Downplaying that to just retail copying him is also terrible.
- The media framing and X reactions around Leopold are egregious. Framing his successful multi-year thesis from $SNDK to $BE as a "collapse" or "failure". After July's surprising crash, then personally attacking him on top is just pathetic to witness. It's almost like everyone is cheering for the downfall of others. Yes, July's crash exposed problems with SA’s leverage, liquidity management, and hedging. But his current YTD performance remains +80%, ranking among the best performing hedge funds. And he still has public equities after all this (just removed leverage). I think he's doing something unique while being successful at it. And this draws the envy of others.
- Did Citadel really just liquidate Situational Awareness… Then brought up entire markets the next day? $NBIS +26.25% $IREN +25.96% $SHAZ +22.82% $SNDK + 23.98% $BE +23.67% $SKHY +16.98% $INTC +12.16% Amid many others. This has gotta be one of the wildest liquidations I’ve seen.
- There's a lot of stupid commentary around Leopold raising funds. After names like $BE, $SNDK, $SHAZ, and others all had very sharp drawdowns in July. Just remember... here's a man in finance that's 1. 6'5 2. Blue Eyes 3. Hedge Fund Probably better looking than you, and was up 439% through June YTD. Regarding the drawdown, Aschenbrenner acknowledged that the fund had "not been immune" to the market turmoil, particularly in Asia. FT separately reported that leverage amplified both its extraordinary gains and recent losses. He described the sell-off as potentially the best buying opportunity since early 2025 I'd agree with him and hope he succeeds with the raise. Since a lot of the current selloff looks like it overshot its mark through forced deleveraging.
- @michaelsikand DRAM 20%+ hike for next quarter, $SNDK LTAs with $META, $MU 16+ LTAs. Market: proceeds to sell off memory. 800G transceiver revision sharply upward? Lasers completely sold out into early 2029? Market: sells off photonics and laser companies.
- $AEHR back up +36.4% today off earnings! 2027 guide: $130-$150m (160-200% growth) from 2026 revenue. Sees opportunity to guide higher (assumes no memory revenue or little to none from newly benchmarked AI customer). Q4 bookings: $60.7M, effective backlog is $100.6M. - Lead AI processor wafer-level burn-in customer is significantly ramping their products. - Engaged with additional AI processor customers who are evaluating wafer-level burn-in. - Benchmark customer, which was a “major supplier of AI accelerators, CPUs and network processors” “exceeded their expectations. From management: The potential revenue opportunity from one of these devices is "significant to Aehr". So another benchmark win for potential HVM in the future. - Wafer level burn-in benchmark with a "global leader in NAND flash completed". Now evaluating a development agreement for HBM/NAND Seems like $SNDK since there was HBF related discussions from last quarter I think. - "Our package level burn-in business for AI processors also gained momentum over the year … from our lead hyperscale customer for Sonoma systems" - Silicon photonics customer already ramping, newer networking customers has forecast additional systems Basically the amount of global semi companies that map to $AEHR is pretty ridiculous across silicon photonics, memory, AI processors, and others. I don’t quite think that $130-$150m guidance is representative of actualized revenue for 2027 if these hyperscalers/semi companies convert to HVM. Typically with these types of qualification into HVM players, markets don’t really judge it by current quarter, but what’s to come. And it looks very positive so far in terms of reactions... $116 -> $60 -> $94 all in the span of a month is pretty insane volatility tho, so good to know what you're holding.
- Nothing like an internal $META memo getting published. Showing AI ramping as usual: - LTAs signed with Samsung and $SNDK for memory - LTAs signed with Sumitomo Electric for fiber optics - Expected to deploy 7GW compute infra this year, and doubling in 2027. - as much as $145B capex spend this year “It plans to launch a chip about every six months through 2027”
- Just putting it out there: If everything crashes together from $NBIS, $MRVL, $INTC, $SNDK, $AMD, $SIVE, $MU, $LITE, and others... Which are all down -4% to -10%+ today so far. Probably doesn't have anything to do with individual fundamentals. Indiscriminate selloffs from things like cascading margin liquidations, usually provide compelling opportunities if the underlying improves.
- Just some consolidated updates on memory: - $MU leads new 1.5T Yen investment in Hiroshima ~$9.3B. (bullish read through for Disco, Advantest, Resonac, Towa) since capex is localized. - Morgan Stanley pointed out NAND will continue to be in short supply into 2027 so $SNDK / Kioxia type players are happy alongisde $SIMO and upstream. - MS remains especially positive on Macronix/Winbond - UBS expects the average price of DDR contracts in the Q3 2026 to increase 32% | 18% Q4, vs. 17% and 12% est. - UBS expects NAND flash to be raised 30% from prev quarter. - Samsung reportedly plans 20% DRAM hike Q3. TrendForce recently forecast DRAM contract prices to rise 13 to 18 percent in the third quarter from the previous quarter, so this hike beats expectations. Something to note: Lot people see 20%... and don't think it's a lot compared to the 70-80% from previous quarters. But if you hike something by 100%, then hike something by 100%, then hike something by 30%, it's a lot more than people estimate since it's compounded. Similar to tracking inflation. I've already made projections going into 2028 from the start of the year on my memory names... I'm just sitting back and watching things play out through all the "memory optimization" and "they can't keep price hiking like this!" noise.
- Always a fun time seeing semi markets crash from Bloomberg report framing once again… UBS analyst on $META report: “this is not new news”. Regardless: $AEHR down -18.3% $AAOI down -17.13% $SIVEF down -15.4% $SNDK down -14.8% $TER down -13.8% $GLW down -11.4% $MRVL down -11.2% $LITE down -10.2% $NBIS down -7.8% Getting PTSD from Bloombert’s previous misleading report on AMD/Nvidia global export controls earlier this year that crashed semi stocks. FYI: Meta doesn’t randomly buy $48B+ worth of neocoud contracts if they overbuilt capacity and can cut capex… Markets are stupid sometimes.
- After $AXTI went from $13 to $140, somewhere along the way up they had a massive float expansion along with dilution. Which it got approved, so as I mentioned before, I wasn't as comfortable talking about it if there's excessive dilution on retail investors. But I do think it's undervalued if they weaponize price hikes like $SNDK.
- @gurukid5995 Markets tend to rotate from bottleneck to bottleneck. Memory from $SNDK to $MU was the market's main focus this month, while optical names like $AAOI corrected. I think we'll see a rotation back into photonics eventually, it's personally my highest concentration theme.
- @firstadopter Yep, I lost a sht ton recently and makes me sad if others did too. Always hard to build a port full of $SNDK type longs that go up despite macro climates.
- @AliTava2020 $DRAM is one of the more positive ETFs I have a view on since it's exposure to SK Hynix, Samsung, $MU, and $SNDK. Which is everything people kinda want for memory exposure.
- Curious if anyone's portfolio is green after today's fun day. $KORU: -32.06% $SOXL: -22.98% $IQE: -13.58% $DRAM: -12.6% $AXTI: -12.57% $FLNC: -12.5% $AAOI: -11.2% $SIVE: -11.7% $TSEM: -10.24% $SNDK: -12.5% $MU: -11.8% Sk Hynix: -12.35% Samsung: -9.6% $MRVL: -8.3% $LITE: -7.6% $SOI -7.15% $TSM: -6.1% $AMD: -6.04% Feels like anything high-beta or semis had a steep drop.
- Nittobo (3110) is one of the most frustrating Japanese companies I've seen. They hold an monopoly in glass fiber cloth, like ~90%+ market share. But refuse to price hike T-Glass ASP, beyond something small like 20-30%. Could easy triple company valuations if they followed $SNDK + NAND but just due to Japanese culture, they won't do it.
- Apparently gym bros are the new hyperscalers. They’ve created a new bottleneck with whey protein? Now there’s $SNDK style price hikes. Maybe creatine is next with shortages. https://t.co/YY5waMXzKH
- @0xPepeTerelu Yeah, pretty sure Citron shorted $SNDK around $600 and they're probably underwater by a ton now.
- I did say $MU looked like the next $NVDA. Now we're at a $1.23T MC. Started talking more about Samsung Electronics/Sk Hynix back in 2025. Put more concentration into the memory theme like $SNDK and others, Jan of this year. And I'm glad my prediction with Micron + memory is playing out well! Hope people had fun with $EWY longs too, those are up a lot.
- @JaaidevV I personally like $SIVE, usually the same names keep on compounding like $SNDK if they’re important to AI? I’m not selling a share, since it looks like we’re only at the start of the next supercycle.
- All the $SNDK short sellers went extinct. Can’t believe it’s almost $2000 now? That aside feels like everyone is just waiting for the $SPCX IPO in a few hours. https://t.co/EahzuEy1KE
- Just in case you’re wondering why indexes + individual names like $SNDK to $MRVL to $LITE are green now. Trump just cancelled attacks on Iran. This market is so volatile… https://t.co/mYzzYeU5rL
- Just in case you weren’t aware… The broader index is down a significant -3-4%. Stocks don’t move in a straight lineup unless you’re $SNDK. And are largely affected by wider selloffs. Curious what my follower portfolios look like you’re green this week + long only? https://t.co/XRlXdeHbm1
- $SIVE looks like both a chokepoint and a bottleneck for CPO next year. Keep seeing information published from nontechnical people who miss any nuances. Here’s the reason why: 1. CW lasers are bottlenecked signaled by $LITE earnings. Laser fabs are heavily allocated to EML likely from former $NVDA contracts. -> Sumitomo/Furukawa = bottleneck -> Win Semi = bottleneck $SIVE does fab-lite, so are they a bottleneck? Yes, $SIVE sits in the laser bottleneck since control output supply of CW lasers from Win Semi and other fabs from allocation way early on (CEO stated they working with more capacity from other players as well). Perfect example is Kioxia/Sandisk. $SNDK controls NAND output, so they’re a bottleneck because they control final pricing. Demand exceeding supply from Ayar, Jabil, other pluggable vendors + Nvidia NVLink CPO ecosystem… final laser supply owned by $SIVE makes Sivers a bottleneck. $SIVE is also likely primary/sole source for Jabil, Gen-1 Ayar, $MRVL Celestial, and other hyperscaler asic/merchant CPO routes. So no way to get around it (can’t hot-swap single channel cw lasers with Sivers) 2. $SIVE is a chokepoint over CPO. $NVDA use $COHR, $LITE (which likely sources external cw capacity from Japanese competitors) $AVGO is likely vertically integrated as well. However: the entire ecosystem around it from ASIC programs (Marvell, AlChip, etc) and merchant programs (Ayar, Lightmatter, Lightelligence) Are all likely designed around $SIVE. Ayar for example, likely tried to multi-source with $MTSI / $LITE back in 2022 but their lasers probably couldn’t match the level of Sivers specification with arrays (removed Lumentum / Macom from their supply chain site recently) If there’s no alternative at least for the initial generations (obviously they’re working to multi-source). That makes $SIVE a structural chokepoint to go through for lasers. Even if you look at the 1.6T LRO $JBL designed, they achieved a “drastic moat” with performance built around $SIVE likely sole source. $SIVE is also the foundry level reference laser design for $GFS, which your hyperscalers use like $AMD (likely using Sivers + maybe Ayar for gen1): If every major player, who hasn’t achieved vertical integration (Nvidia/Broadcom) is using Sivers for CPO… That makes them a chokepoint. Just look at the entire CPO $NVDA NVLink ecosystem partners: every single one are all likely using Sivers. And they all use $GFS as well (where Sivers is default reference). So $SIVE is both a chokepoint and bottleneck when CPO really scales up H2 2027, over one of the biggest architectural shifts of all time (near $0 -> $81B or $91B TAM in the next 1 1/2 years from GS research note) This is why I say $SIVE looks like it could be the next $75B $LITE over the next couple years. All of this should play out next year. And it’s still trading less than a company with $50M in purchase agreements that buys Sivers lasers to repackage them.
- I did say $AAOI was my favorite US optical long... +20.1% today. If you want the next $SNDK, you're looking at it. I think H1 entering H2 2027 will likely be that massive inflection point for photonics players. We're just a tad early entering H2 2026 while everyone is building up capacity. Just a general rule of thumb in general if your name isnt space or quantum, markets are forward looking round 8 months. That revenue ramp inflection point is coming, more of a matter of when, waiting for it, and embracing volatility in the meantime.
- I actually got every single one of these predictions right > InP substrate bottleneck > laser bottleneck, and markets rewarding $AAOI with laser fabs for it. But it did take markets 6 months to realize how important $AXTI was. As well as for the bottleneck to start showing up in the epiwafer companies like landmark. All the modeling with AXT was with former contracts made, not after $SNDK style ASP hikes.
- $RPI, close to ~3x returns. Off the media branded "Meme Stock". I think after retail saw institutions bear post my thesis posts. Then ended up paper handing $AXTI, then $RPI, then $IQE, then $EWY, then $SNDK, then $AAOI, then $SOI. And them watch them all go up 3x-15x+ after institutions bought up the float. Retail finally learned not to trust them with anymore with names like $SIVE?
- AI capex spend is expected to go to "$3 to $4 trillion annually" by 2030 from $NVDA Jensen Huang projections. You're not bullish enough. And it might be a good idea to stay exposed + own the keys of the AI Kingdom: -> $AXTI controls the materials buildout with photonics. -> $SOI controls the AI buildout with silicon photonics. -> $SIVE controls laser chokepoints for CPO. -> $IQE controls Western epiwafer supply chains for photonics. All these started off as tiny companies, yet the trillions of projected capex gradually upward to them. There's many more in other industries as well. -> AI Capex flows to Neoclouds like $NBIS. -> AI Capex flows to memory like $MU and $SNDK. And many of the "commodity" materials or "science projects" for the past 20 years now a sudden shift in exponential TAM expansion. We're witnessing the next industrial revolution with Artificial Intelligence + Physical AI.
Ongoing takes on other optical names too
Beyond SNDK, his viewpoint library also covers: