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按:本文為2024年2月份教學影片

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繼續分享如何發掘投資主題

板塊內連動

股票有所謂「連動」的概念,如板塊連動,A航空公司上升,可能引發其他航空公司跟升。

有時則概念連動,AI亦是好例子,NVDA、SMCI上升,就可以嘗試找下一隻相關股,不一定是同一板塊,就是所謂投資主題。

這情況由李佛摩所發現,他留意到當年熱炒的鋼鐵股、汽車股,當中股票同升同跌。如當TSLA下挫,其實電動車股亦難幸免。

最重要是知道哪些股票之間有連動,就要自己做功課,如果有主題ETF,就當然有專人幫助揀選。如隊長炒香港股,因為不熟悉當中關係,所以會較麻煩。

下圖為Uber(UBER)的走勢,它為隱形股皇,數月已升一倍,但因每日波幅細,好多炒家會覺得資金如被凍結,較少人留意。Uber跑出後,Lyft(LYFT)亦連動上升。

參考Koyfin的Earning History,Lyft的業績期表現平凡,沒有大升大跌,但隊長失諸交臂,沒有在爆升前買入。在發布業績後,公司便大成交突破上升。

有沒有第三隻連動股?這就是自己做功課,要知道有甚麼其他叫車App股,大部分問題,均可以從Google中找到答案,一分耕耘,一分收獲。所以炒賣投資絕不容易,如李佛摩所言,懶於思考的人,不太適合炒股票。

答案揭開,下一隻可以是東南亞叫車App Grab(GRAB),下圖可見,Grab橫行日久後,升穿下跌趨勢綫,隊長便買入。第二日在其他股狂升下,該股大成交下挫,開市數分鐘,已沽出過去一日成交量的股票。但收市沒有跌穿趨勢綫,隊長決定不變應萬變,繼續持有。到第三日,當大部分股票大成交下挫時,它反而成交枯竭。我就知道有機會了,因為這情況下,如果此股不行,應該早已大成交粉身碎骨。到第三四日便大成交再上,應日人同此心,心同此理,找連動股買入。股票要爆升,多要業績帶動,從Grab的業績報表見到,公司終擺脫虧蝕,收入增速強勁,有故事可說。

再下一隻叫車App是大陸的滴滴出行(DIDI),在低位已經升到十多%,但未見有突破迹象。有傳聞指,內地官方有意限制網約車發展,2月曾經一度短暫禁止他們在上海機場載客,同學可以自行做功課。

Stockbee老師有個Neglected Stock(被忽略的股票)的概念,即是早已脫離大眾目光的股票,如上文提及的Grab,突破前相信沒多少投資者留意。

這些股「咸魚翻生」時,多會不飛則矣,一飛沖天。如Coinbase(COIN),可以短時間由70美元升至100美元。可以在業績後,見到業績對辦才追入,止蝕位明確。

(系列未完待續)

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