投资要看盈亏比, 这里举几个例子

本帖于 2025-02-20 19:41:15 时间, 由版主 三心三意 编辑

Looking out 12 month....

NVDA: max upside that I can see is $200 (maybe it can go higher, but I just could not see it).

  • buying at 140-150 net only 33% to 45% upside. Not super attractive -- 所以在这里不需要激进
  • buying at 110-130 improves profit to 90% to 70%. This is becoming attractive

BA: max upside could be $250 if this thing turns around

  • buying at 150 or below net 60% upside, attractive
  • buying near 180-200 net 25%-45% upside, Not super attractive

TSLA: max upside could be 700

  • buying at 250 or below has 200% upside, hugely attractive
  • buying at 350 has a 100% upside, very attractive
  • buying at 450 reduce upside to 55%, not super attractive

Of course, we should also model the probability into the above scenarios, but even this simple model can help to decide how aggressive you want to be.

This is the reason I am still on the fence with BA above 180 price.

所有跟帖: 

你有了这样一个大致的轮廓,接下来就看波浪选入点了 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 19:36:10

看来这个Elliott wave和fib很重要啊 -BrightLine- 给 BrightLine 发送悄悄话 BrightLine 的博客首页 (167 bytes) () 02/20/2025 postreply 20:07:09

I would give AMD ~140 by the end of the year -任静锅-- 给 任静锅- 发送悄悄话 任静锅- 的博客首页 (0 bytes) () 02/20/2025 postreply 19:38:27

That‘s fine. 我只是举个例子。 每个人自己把参数放进去,自己负责。但这样的模型对谁都有用 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 19:40:22

这也是为什么我反复说亮线在140-150入场英伟达太激进 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 19:38:28

长线总得入场吧,买贵点就贵点,准备拿一年以上的,哈哈,我还指望200呢 -BrightLine- 给 BrightLine 发送悄悄话 BrightLine 的博客首页 (218 bytes) () 02/20/2025 postreply 19:41:51

我会等。如果最好结果是200,那就是说在最理想的情况下,140进也只能赚45%,不是最优的投资 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 19:45:20

问题是当时我并不知道它会不会一骑绝尘追不上啊,哈哈 -BrightLine- 给 BrightLine 发送悄悄话 BrightLine 的博客首页 (0 bytes) () 02/20/2025 postreply 19:47:07

如果再把别的概率放进去,回报远比45%低 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 19:46:38

如果两年能有45%的回报,我已经很高兴了,更何况还可以在120加仓 -BrightLine- 给 BrightLine 发送悄悄话 BrightLine 的博客首页 (0 bytes) () 02/20/2025 postreply 19:48:53

不能这么讲,投nvda就是投龙头呀,前景明确和稳定 -cnrhm2017- 给 cnrhm2017 发送悄悄话 cnrhm2017 的博客首页 (0 bytes) () 02/20/2025 postreply 19:49:48

所以我说还要把概率加到里面啊 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 19:52:46

你指的是什么概率?哈哈 -BrightLine- 给 BrightLine 发送悄悄话 BrightLine 的博客首页 (0 bytes) () 02/20/2025 postreply 19:56:07

每一个假设都不是一定的。比如说你可以设70%的概率給英伟达@200,但50%的概率給特斯拉@700 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 19:59:24

明了,大师的意思是要进特斯拉 -才迷- 给 才迷 发送悄悄话 才迷 的博客首页 (0 bytes) () 02/20/2025 postreply 19:59:57

LOL, no. 我是说每个人自己应该有这么一个模型。 至于具体目标价和百分比,自己决定 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 20:03:36

Joking... but good discussion,前几天我卖meta最划算,不到一个月就16% -BrightLine- 给 BrightLine 发送悄悄话 BrightLine 的博客首页 (188 bytes) () 02/20/2025 postreply 20:04:57

嗯,META 和 PLTR 都是短期严重超买了 -三心三意- 给 三心三意 发送悄悄话 (0 bytes) () 02/20/2025 postreply 20:10:34

也是timing,我试了一下,在高点火中取栗就跑,还成功了,哈哈,过几天再买再卖 -BrightLine- 给 BrightLine 发送悄悄话 BrightLine 的博客首页 (18 bytes) () 02/20/2025 postreply 20:13:59

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