你好，摩爾們：
被認為超買的股票將等待修正或回調，而超賣的股票有可能會導致價格反彈。
我們選擇了一些具有 RSI 指標的潛在投資機會的股票，以了解今天標普 500 中的超買和超賣的公司是哪些。
超買和超賣定義
當 RSI > 70 時，股票通常被視為超買，當 RSI 低於 30 時被視為超賣。
根據 JR 威爾斯·懷爾德創建的理論，RSI < 30, it is a bullish sign (buy signal), and when RSI > 70 時，它是一個看跌標誌（賣出信號）。
上一欄績效追蹤 (10/25)
有 精選 10 股票中有 5 個這跟隨了 RSI 指標提供的建議波動。
會發生什麼事？
特斯拉公司的股票週五收盤下跌，在申報表明首席執行官埃隆馬斯克出售另一塊價值約 7 億美元的公司股票，利用了這場電動汽車製造商的價值超過 1 萬億美元的氣象反彈，創下了 11 週連勝。
本週第二輪巨大的股票銷售是在世界上最富有人和特斯拉的頂級股東推特表示，如果社交媒體平台的用戶批准這一舉措，他將出售 10％ 的股票。
該電動汽車製造商的股票週五收盤下跌 2.8%，至 1,033.42 美元。在 10 月份急劇反彈後，今年股價上漲超過 46%。
超買
$Pool Corp (POOL.US)$
$希捷科技 (STX.US)$
$Arista Networks (ANET.US)$
$A.O.史密斯 (AOS.US)$
$百思買 (BBY.US)$
超賣
$Moderna (MRNA.US)$
$好事達 (ALL.US)$
$Illumina (ILMN.US)$
$PayPal (PYPL.US)$
$Dish Network (DISH.US)$
我們收集標普 500 指數的股票，因為它包含大多數有價值的公司。
想自己篩選市場嗎？閱讀：如何使用股票篩選器
想了解有關技術交易的更多信息？閱讀：技術分析 101：技術指標簡介

New trend in low margin businesses
Alibaba is currently undergoing a process that is opposite to Amazon (AMZN). Amazon started with a low-margin retail business and added the profitable AWS and advertising business which now form the core of its valuation. On the other hand, Alibaba started with a highly profitable e-commerce business and is now adding lower-margin businesses like physical retail, delivery, digital media, and others. This has led to a significant fall in overall margins for Alibaba as the new businesses cannot match the margins of the core e-commerce business.
We can see from the above image that there was a whopping 82% YoY growth in Others segment. This is the revenue from physical retail stores, which is generally a very low-margin business. It has also had an impact on the employee numbers of the company. The consolidation of Sun Art has increased the headcount of the company to over 250,000 in the last quarter compared to close to 120,000 in the previous quarter.
The revenue share of Others segment has increased from 20% in the year-ago quarter to 27% in the last quarter. If Alibaba continues to acquire other physical retail chains, we could see the revenue share from Others segment increase further.
Importance of standalone valuation
Due to the above trend, it is very important to look at the standalone valuation of different segments. We can see that Alibaba's core Customer Management business reported 14% YoY growth, which is quite good considering the revenue base of this segment. This is the business that contributes most of the profits for Alibaba.
Alibaba has also reported 29% YoY growth rate in the cloud segment. The annualized revenue from this segment is close to $10 billion, which makes it one of the main players in this industry. The revenue share of cloud business is only 8%, but Alibaba has managed to report profitability within this segment. The operating margin of Amazon's AWS is 30% while Alibaba's cloud business has a margin close to 2%. It is likely that Alibaba will be able to narrow this gap in margins in the next few quarters, which can improve the sentiment for the overall stock.
Alibaba's Digital media business had modest growth of 15% compared to the year-ago quarter. However, Alibaba was able to improve the margins from negative 19% in the year-ago quarter to negative 5% in the previous quarter. This is a 14 percentage point improvement in a single year, which has helped the company save close to $0.8 billion on an annualized basis. Even though the revenue growth is quite low in this business, Alibaba has reported a healthy 30% growth rate in average daily subscribers for Youku. According to Variety, Youku's membership base is at 90-100 million compared to 112 million for Tencent Video and 119 million for $愛奇藝 (IQ.US)$ . Rapid membership growth in Youku could help Alibaba replicate Amazon Prime's success and also build better loyalty for its retail platform to defend against competition from $京東 (JD.US)$ and $拼多多 (PDD.US)$.

$Sea (SE.US)$ 這些股票跌了，這支股票也跌了..

$英偉達 (NVDA.US)$ over Fridays highs to $225. Plan accordingly. You are welcome in advance. Analysis in chart.

一個積極管理的 ETF， $ARK Innovation ETF (ARKK.US)$2020 年見到了非凡的回報，推動凱西伍德進入世界的眼睛，贏得了她無數的粉絲。它的價格為 24.42 億美元，目前是所有 ARK ETF 中最大的。每個人都想到的一個大問題是：ARKK 能否重現 2021 年的成功？
Cathie Wood 表明自己在挑選股票方面具有敏銳的眼睛，並願意在她相信的公司中佔據巨大的職位。然而，我之前讀過，以與小型資本基金相同的速度增長大型資金更難，因為基金經理有一個令人討厭的問題，決定資金流入的位置分配到哪裡，當它購買大塊低交易量的股票時，價格會被推高...

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這是一個有關“如何追踪熱門股票？”的視頻指南。
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