社区

哈喽~各位虎友好，欢迎大家来到我们的本周优秀萌虎榜！ 在本专栏中，我们精心挑选了十篇初次获得加精推荐和受用户喜欢的优质内容，欢迎大家积极发表意见，参与讨论，共同进步。 虎友@股市不倒翁 背景：理工科专业毕业，曾经在互联网、VC和二级市场基金都有过工作经历。对于经济和商业运行有一定观察。现货交易胜率在80%以上，偏中长线持股，持股周期在1月-1年。美股账户偏中短线交易，最近一年（2020.11-2021.12）主要做期权。收益率20％，和虎友们分享我经历的三个蜕变阶段，和几点经验和教训。 文章阅读：【2021复盘】经历风雨，我还活着，勇往直前 虎友@凯哥xk 2021年小米整个跌了一年了，中间带了一点点的反弹，自己也由盈利十几个点变成了亏损二十几个点了，对于港股的投资真的是刻骨铭心的了。当初对于对于小米的投资也是在阅读了很多雪球大V的文章，同时自己也对门店作了一番考察。虽然当初买入的理由现在看来都站不住脚了，但是仍然还是打算坚守。$小米集团-W(01810)$ 文章阅读：小米，2021锥心的痛 虎友@Fly13 美好的一天从恒大（今

Salesforce.com is one of the largest enterprise software companies, and it's led the customer relati

$Tesla Motors(TSLA)$=) Follow smart money = win. Smart money are leaving Tesla. Institutions & hedgefunds are unloading their Tesla shares at the highs while dumb dumb retail investors catch their bags and got burnt. This is why my Tesla short is an easy play. Follow smart money. They are exiting tesla in droves as seen on my bloomberg terminal.

There's one area of the energy sector that isn't getting any respect. And you can collect fat yields if you act today.

U.S. stock-index futures advanced Thursday morning after the market staged a U-turn the previous trading session, welcoming a Federal Reserve decision to ramp up the pace of its taper and leave interest rates unchanged — for now.$Delta Air Lines$ – Delta rose 2.3% in the premarket after projecting a $200 million fourth-quarter profit. Consensus forecasts were predicting a quarterly loss for Delta, but the carrier said it is seeing strong holiday demand and it is on the path toward exceeding pre-

$PayPal(PYPL)$ $Square, Inc(SQ)$ $Shopify Inc(SHOP)$ 收益率建模啥意思？为啥要对收益率建模？因为要建立合理的预期。举个例子，咱们在投资前，如果对这支票历史的收益率与风险不清楚的话，无异于盲人摸象。比如，某个股票，历史上的平均月回报是5%，期望买入之后一个月突然翻十倍是不现实的。投资中的期望收益率是基于一项投资机会的平均历史净收益率数据为基础，用来设定合理的投资目标，也就是未来合理的回报值。但仅仅知道预期的回报率就去做投资决定是天真且危险的。这件事分2方面来看：1、历史的收益率（回报）与方差（波动）2、它们的统计分布在做出投资决定之前，投资者还要去审查投资机会的风险特征来进一步了解你的投资目标。除了预期回报，还要考虑这种回报的概率/发生的可能性。现在讲讲干货和一个很牛的工具：第一步，度量回报的收益率与风险特征首先，我们要做的是将Paypal，Square，Shopify历史5年以上每个月的月收益率取出来。再来观察收益率的集中趋势和离散度。简单来讲，集中趋势说明了数据集中于何处，简单理解就是——均值，众数等，表达了收益的信号；离散度反映了收益率在均值附近的分散情况，简单理解就是——标准差、方差等，表达了风险的信号。均值代表预期回报，标准差代表风险。Paypal的预期回报（月平均收益）=2.07%，标准差（风险）=7.99%，根据过去6.5年/78个月的历史数据统计所得。S

Despite record financial performance, this digital giant's stock continues to get beaten down.

The main event for investors this week will be the Federal Reserve’s rate-setting committee’s last meeting of 2021. Recent commentary from officials has leaned more hawkish, setting up a potential announcement of plans to accelerate monthly asset purchase tapering.The Federal Open Market Committee’s two-day meeting takes place on Tuesday and Wednesday.Earnings reports this week are few, but will include Campbell Soup on Tuesday;Lennar,Accenture,FedEx,Rivian Automotive, and Adobe on Thursday; and

Dec 10 - A federal jury on Friday awarded $22.5 million to a U.S. Army veteran who alleged that combat earplugs sold by $3M$ Co caused him to suffer hearing loss and tinnitus, the biggest verdict yet in massive litigation over the product.Jurors in Pensacola, Florida, sided with former U.S. Army soldier Theodore Finley in the latest trial to result from more than 272,000 lawsuits by servicemembers and veterans who say defective earplugs made by 3M caused their hearing damage.Finley, who used th

GameStop shares dipped nearly 4% in premarket trading after the videogame retailer disclosed SEC sub