john smith

7 posts

john smith

john smith

@johnsmithd37k

Beigetreten Mayıs 2026
27 Folgt0 Follower
john smith
john smith@johnsmithd37k·
@Kay2289123 一下子说这么多财富代码,没那么多钱开超市啊
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美研芒格君
美研芒格君@Kay2289123·
分享一篇 5 月 26 日 我发在小红书的文章,至今依然成立和受用,大家感兴趣的话可以去小红书看看,以及对应代码的变化,后面最新的文章两边都会同步 最近不论是 Terefab、Intel 建厂、HBM 扩产,大家的热点都在芯片和存储本身,但价值远不止步于此,我们往下挖了一层 >> 道理很简单: 不论是美光还是闪迪还是 Intel,上行趋势确实很明显,但是良率落地其实还没有跟上。因此,铲子的铲子更为重要 下阶段需要做的是将CPU、HBM良率搞上去,越高越好。这离不开它制造的锤子、钉子、水泥 别怕这一长串代号,大家都退步了,就是你的机会 ASML、AMAT、LRCX、KLAC、 Hanmi、KLIC、FORM、TER、Advantest、 Tripod、Murata、Resonac、 AMKR、 Unimicron、Kinsus、Nan Ya、AT&S, 要让 HBM 上最细的图案被印出来 ASML 制作工艺中的19 个材料工程的机器 AMAT 要让晶圆上的洞和膜雕到原子级 LRCX 要让坏砖在堆塔前就被挑出来 KLAC 要让 12 层 DRAM 精准压成千层塔,靠 Hanmi 要让每颗 HBM 像答考卷一样被秒级筛过,靠 FORM 要让 GPU 大脑通过最严的判卷,靠 TER 和 Advantest。 要让千层塔的胶水、水泥、绝缘膜不掉链子,靠 Tripod、Murata、Resonac; 要让 HBM 和 GPU 住进同一个封装大房间, 靠 TSM, AMKR 要让这颗 AI 大脑稳稳坐在地基上, 靠 Unimicron、Kinsus、Nan Ya、AT&S。
美研芒格君 tweet media
美研芒格君@Kay2289123

我们是一支在硅谷的美研投资团队,成员来自斯坦福、UCLA、沃顿。但比学历更重要的是:我们白天就在硅谷一线大厂做 AI 推理与训练,晚上研究的,恰好就是我们白天亲手在用的东西 文章目前发在小红书,X 刚刚建立,后续会同步过来。欢迎前往查看 因为我们本身在硅谷做 AI 一线推理和训练, 年初至今的回报率 YTD+130% 了,按照我的策略走,下半年会有不错的表现。 为什么起这个小红书名字,代表了我们的哲学: 不追一天的涨跌,只看长期逻辑是否成立。看懂再投,看不懂就等 我们只研究一条主线 AI 算力的长期传导。顺着这条链往下数,至少七层: AI 训练 → 推理 → 光模块 → 互连 → 存储 → 产业上下游 这是我们长期跟踪的方向 · 算力工厂 / 新云:ORCL、CRWV、NBIS、IREN、AMZN、GOOG、MSFT 定制 ASIC:AVGO、MRVL、GOOG、AMZN、TSM 光模块 / 光互联:COHR、LITE、AAOI、MRVL、CIEN、FN 机架内互联:ALAB、CRDO、MRVL、AVGO 内存与存储(KV Cache 分层):MU、SNDK、P、NETAPP、RMBS、WDC 推理新品类:CBRS 相比于网上的各路大神,说一些看不懂的话和激进的喊单,我更喜欢保守的策略 1. 永远储备将近 30% 到 40% 的现金 2. 不跟风,只投看真正看透、看懂底层逻辑的AI 3. 不在乎一天的波动,目标永远是 6 个月和一年之后 这段时间把年初至今的文章都整理了一下,回顾下来,重读发现很有收获 欢迎关注我的 X 和小红书,小红书的 ID 也是x id 后续文章会往 x 录取搬运

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mark
mark@cherryPayment·
一家新的公司 Foosung (093370),setenity说这家公司将会受益于中国对日本的WF₆出口限制,那我们来看看呢? 首先了解这个公司或者了解这个事情的最基本条件是需要明白什么是WF₆? 1. WF₆学名叫六氟化钨,是一种钨的氟化物气体,在半导体制造中是关键的前驱体(precursor)化学品, 主要用于钨金属化也就是通过化学气相沉积(CVD)工艺,将钨填充到芯片中的接触孔、通孔(via)和金属互连层中,形成导电通路,这是先进逻辑芯片和存储芯片(DRAM、NAND)制造中不可或缺的步骤。 这样讲有点难以理解太多学名了,我们可以想象成芯片里有很多密密麻麻的微小导线和插头,而我们就是依靠WF₆分解后沉积的钨原子一层层”长”出来,这样就能把他们连起来,没有它们,晶体管再多也是一盘散沙,互相之间无法通信、无法通电。 为什么他如此特殊呢?因为WF₆在室温下是气体,且具有强腐蚀性和毒性,需要特殊的储存、运输和处理设备,生产门槛和安全要求都很高,所以这也是为什么全球能稳定供应高纯度WF₆的厂商相对集中只有少数日本、中国、韩国企业有。 2. 所以现在来理解这个链条的逻辑:中国限制对日出口WF₆也就是六氟化钨,半导体钨金属化关键前驱体,那么日本供应链受冲击,紧接着SK海力士/三星/台积电面临WF₆短缺,这也会影响到非中国、非日本的供应商(Foosung)市占率和议价权被动提升,最后导致Foosung受益。 我认为这个逻辑是完全通的,因为中国确实对WF₆进行出口管制而日本本土几乎没有钨矿资源, 所以底层逻辑还是ai基础材料的竞争,当一个资源变成了国家战略武器时这性质就不一样了,就和美国打算禁止非美国人使用高级ai一样。 3. 而Foosung的基本面也确实如此,他们是韩国的精细化学品/特气企业,确实生产WF₆等半导体前驱体气体,客户包括SK海力士、三星电子。 那么假设日韩产业链中日本同类供应商比如关东电化、大阳日酸等受到冲击,Foosung作为”非中国、非日本”的替代供应商理论上能获得订单转移和提价空间,这个逻辑本身是成立的。 所以我也认为Foosung会受益于中日限制并且完美符合这个逻辑。
Serenity@aleabitoreddit

Okay my fellow Koreans, it's been awhile. Foosung (093370, ~$1.2B MC) looks like a massive beneficiary soon. Basically China export controlled Japan, causing their WF₆ supply chain to go down. Meaning 25% of the world's supply required for SK Hynix, Samsung, $TSM go bye bye. If you remember the Straight of Homuz with Oil, that's a lot. Foosung's importance just shot through the roof given from some est. they're 10% of the supply chain? So that number goes up, massive bottleneck for demand. Then this looks like the best pure play beneficiary outside of China (even if precursors pricing are rough). Don't have positions, just wanted to publish an idea.

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john smith
john smith@johnsmithd37k·
@Ren_aramb Is there an ETF that includes all of these holdings in one package?
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Ren
Ren@ren_stocks·
Holy mother of InP lasers. Rosenblatt just dropped an InP supply and demand model today and the numbers are staggering. NVIDIA asked the supply chain to scale InP laser capacity by 20x from 2025 to 2030. The vendors pushed back and agreed to 12x. Even the conservative scenario has Datacom supply still 50% behind demand exiting 2030 after a 12x increase. 12x supply increase over five years. Still not enough. Rosenblatt explicitly calls it a non-cyclical growth industry well past 2030. The InP supply chain is structurally short for the rest of the decade. Here is what the revenue buildout looks like by supplier across 2025 to 2030: $LITE -- $600M in 2025 to $9B by 2030. The dominant player scaling fastest including a new InP fab acquisition in Greensboro NC converting in 2028, adding $2.5B in 2028 and $5B in 2029. $AAOI -- $60M to $2.1B. The high-torque play. Rosenblatt sees it growing from under 5% to nearly 10% transceiver market share and entering the ultra-high-power CW laser market for CPO. Smallest base, biggest percentage runway. $SIVE -- sits alongside as the pure-play InP laser specialist and external light source for CPO -- the chokepoint Rosenblatt's entire supply model is built around. DFB laser supply confirmed tight through Q3 2027. $AVGO -- $550M to $4.5B. Second largest by revenue. Strong but less pure-play InP than LITE. $COHR -- $125M to $4.3B. Rosenblatt's top near-term pick. Expects revenue acceleration and gross margin expansion from 6-inch wafer production driving 800G and 1.6T transceiver sales. VIAV -- $53 stock, called out specifically for underappreciated bottlenecks in OCS and CPO test expertise and capacity. Total InP Datacom market: $1.9B in 2025 to $22.75B by 2030. Nearly 12x. Flags from the report. $CIEN -- Rosenblatt is cautious. Side GM expectations have gotten too high and do not factor in price increases from LITE and COHR as suppliers. $CRDO -- viewed as a niche player, not strongly relevant to the CPO optical supply chain. Expects 1.6T AECs to be weaker than the market expects. If CPO scale-up slips beyond the current 2H27 build window, 2028 becomes a buying opportunity rather than a revenue year. Wafer supply, test and measurement, DSP, PIC, and laser capacity are all identified as potential chokepoints. But the direction is not in question. NVIDIA is the demand signal and NVIDIA asked for 20x. The supply chain is building for 12x. The gap between those two numbers is the entire trade. $LITE $COHR $AAOI $SIVE for the InP laser supply chain. $IQE $AXTI $SOI for the InP epi and substrate layer underneath them. $SOI for SiPh substrate. Bullish Photonics
Ren tweet media
Sean@sean_________

Rosenblatt InP lasers checks: According to our checks, NVIDIA, which is the driving force behind scale up CPO, asked the supply chain to increase InP laser capacity by ~20x from 2025-2030. The vendors appear to have taken a more conservative stance, agreeing to an ~12x increase ( $AAOI / $LITE etc)

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寒梅傲雪
寒梅傲雪@LuzShaunda86368·
🔥纪录片《江泽民其人》:江泽民真实丑态 答香港记者!
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luo
luo@luo02122793·
@AYi_AInotes 能连我的微信和支付宝么?哈哈哈
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AYi
AYi@AYi_AInotes·
说个暴论,个人理财这个独立赛道,可能要被ChatGPT直接吃掉了, 它刚上线的个人理财功能,会直接或间接干掉几百家公司, 我感觉OpenAI 正在复制 Google/Apple 当年的打法, 用核心产品聊天把相邻赛道全部吃掉,今天是理财,未来很可能继续扩展到健康、旅行、法律等, 我昨天晚上说,GPT 新上线的这个子功能可能要干掉几百家公司,可能都保守了,因为光是做个人理财订阅的这种 APP起码成百上千家, 为什么能干掉这些理财公司? 下方评论区thread我详细给大家讲透👇
AYi@AYi_AInotes

holy shit😭 这是要干掉几百家公司的节奏啊Σ(゚д゚;)

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RamenPanda
RamenPanda@IamRamenPanda·
接下来一个阶段涨得最猛的就是光 CPO里必然要出一个 $sndk 闪迪一样的几十倍黑马的 请选择你的战士吧!
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