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空空的投资日记 (@chuge857) “Serenity 今天主动公开了自己的亏损仓位,这在财经博主里非常罕见,值得认真读一遍。” — TopicDigg

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@chuge857
加入 November 2022
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Serenity 今天主动公开了自己的亏损仓位,这在财经博主里非常罕见,值得认真读一遍。 她的三大核心主线是:新型云计算(能源基础设施)、存储(Memory)、光子学/光模块(Photonics)。 先说哪些赚了: 在这三条主线里,她选中了各自赛道的最强标的——新型云计算选了 NBIS(美股,AI数据中心能源基础设施),存储选了NBIS(美股,AI数据中心能源基础设施),存储选了EWY LEAPS 期权(美股,追踪韩国股市的 ETF,覆盖三星和 SK 海力士),光模块选了 $SIVE(瑞典股市,硅光子核心供应商)。这三个都是今年的顶级表现者。 再说哪些亏了,这部分更有价值: 第一个大坑:台湾 CPO(光电共封装)产业链。 今年初有分析师发布了一份关于"CPO 延迟"的报告,引发市场恐慌,导致她持有的三只台湾 CPO 相关标的(Foci、Msscorp、Xintec)大幅下跌,目前仍处于深度亏损。后来英伟达直接出面否认了 CPO 延迟的说法,但股价已经被砸坏了。 ——这个教训对 A 股投资者很有参考意义:一份分析师报告,哪怕后来被证明是错的,也可以在短期内把一个正确的产业逻辑打成重伤。 第二个大坑:韩国标的。 她持有的 Auros 和 Foosung(WF₆六氟化钨供应商)目前都是亏损状态,韩国市场的波动性让她直呼"PTSD",表示短期内可能不会再碰韩国股票。但她同时说,长期来看,随着 SK 海力士和三星完成量产资质认证(HVM),以及日本供应链的潜在收缩,这些标的最终可能还是会回到盈利区间。 第三个坑:宏观判断失误。 她之前做多过公用事业 ETF XLU(美股,电力/能源基础设施),逻辑是降息预期。但伊朗战争爆发后,降息预期从3−4次直接归零,这个仓位没有按预期走。此外,XLU(美股,电力/能源基础设施),逻辑是降息预期。但伊朗战争爆发后,降息预期从3−4次直接归零,这个仓位没有按预期走。此外,TTD(美股,程序化广告平台)和 $META(美股,社交媒体/广告)也是亏损收场。 最后她说了一句非常重要的话: "我提到 AAOI的时候是30美元,AAOI的时候是30美元,AXTI 是 13 美元,但不是每个人的买入价都一样。如果有人在 220 美元买了 $AAOI,然后跌到 160 美元,我会感到很抱歉。" 这句话直接点出了跟单最大的风险:博主发现机会的时间点,和你看到这条推文的时间点,可能已经相差了几十甚至几百个百分点。 对我们 A 股投资者,这条推文有三个实际参考价值: 第一,即便是研究深度极强的博主,也会踩坑。Serenity 的整体胜率很高,但她仍然有台湾 CPO 链、韩国标的、宏观判断等多个方向的亏损。没有人能做到全对,这是市场的本质。 第二,"分析师报告"不等于事实。台湾 CPO 延迟报告的案例说明,一份被广泛传播的研报,可以在短期内制造巨大的价格扭曲,而最终被证伪的时候,损失已经造成。对于 A 股里同样的 CPO/光模块标的,这个逻辑同样适用。 第三,买入时机比方向判断更重要。方向对了,但买在高点,依然可能亏损。Serenity 自己也承认,她更倾向于用几个月的中期维度来评判一个想法,而不是几周。这和 A 股里很多人追热点、几天就割肉的操作方式形成了鲜明对比。
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I think something to highlight also is not all my ideas are green, especially on short term timeframes! My core three themes are Neoclouds (Energy), Memory, and Photonics. And I'm glad I chose the literal top performers for each segment from $NBIS to $EWY leaps to $SIVE. However, I still have pretty large losses following the false analyst report on CPO delays that $NVDA refuted: That nuked 3 of my TW CPO longs from Foci, Msscorp, Xintec and others. (which are heavily red). Shunsin / Win Semi are holding up much better though. Some of the other ones in Japan that I've mentioned like Towa, Harmonic Drive, NCI, etc. are performing much better following short-term volatility. As for Korea yes I have PTSD for from Auros and now Foosung that are both both red (I didn't own 093370 though, just got PTSD watching price action). Idk if I'll touch Korea again, just way too volatile. But I still think those will end up green eventually following Sk hynix/samsung qualifications + HVM, and the future japanese supply chain shutdown. I also did change some of my previous long ideas like $XLU following the Iran War nuking all chances of rate cuts from 3-4 down to 0, and that didn't play out too well. Three software names I mentioned previously like $TTD, $META ended up red. $SNAP, I also changed my thesis after noticing the endless SBC accounting methods. $RDDT idea was finally in the green from $130 -> $170 after a long time. But I think the vast majority of my ideas like $MRVL, $NBIS, $ARM, $INTC, $MU, $LITE, SK Hynix, Samsung, for larger cap. Down to $AXTI, $LITE, $AAOI, $RPI, $IQE, and others for smaller cap positions directionally play out pretty well. With random stuff like $SIMO, $HPS.A, $TSEM, $AEHR, $LPK, $SOI, $ALRIB, and so on all ended up turning out aight too. The blended average is kinda overwhelmingly green since majority of my long ideas are triple digit YTD. But I've definitely missed a few. Also entry point is really important too... I mentioned $AAOI at $30 or $AXTI at ~$13, but not everyone has the same entry point. So if someone bought AOI at $220 and it dropped to $160, I'd feel bad. But regardless, I'd prefer to judge how ideas play out on medium term timeframes over a few months rather than a few weeks.
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