3 ms·
> If you decide to invest $100,000 into the stock market because you agree with my reasoning in this post, then it would make a lot more sense to invest $10,000
by dxbydt 4y ago
> If you decide to invest $100,000 into the stock market because you agree with my reasoning in this post, then it would make a lot more sense to invest $10,000 a month over the next ten months than invest all of the $100,000 this month.
Depending on the equity, you are essentially sampling from a skewnorm & summing over 10 variates. eg. if you invest in the broad market, ^GSPC (your s&p 500) has a skew of +0.4 and a variance of 2.8, so your five number summary works out to
summary(mapply(function(x){sum(rsn(10, dp = cp2dp(c(0,1.67,0.4), "SN"))[1:10])},1:10000))
[-18.3, -3.7, -0.2,3.4,18.8]. While the median scenario is net neutral, you do end up underpaying 3-4 times if you fall below the first quartile.
otoh, if you are feeling frisky and want to dump 100k into robinhood over the next 10 months, $hood has a skew of -0.88 & a variance of 26.3, so 10k realizations of this scenario -
summary(res<-mapply(function(x){sum(rsn(10, dp = cp2dp(c(0,5.1,-0.88), "SN"))[1:10])},1:10000))
yields [-70.8, -10.6, 0.7,11.4,47.5] - much more interesting set of circumstances!
I guess he's betting on prices generally headed down over the next 10 months, so he significantly underpays if things go per plan.
- DelaneyM 4y ago> I guess he's betting on prices generally headed down over the next 10 months, so he significantly underpays if things go per plan. Yes, exactly that! And if one is betting on prices generally going down over the next 10 months one should just not enter the market at all.
- bombcar 4y agoOr if you’re not sure but want to hedge buy now and buy some puts also.
- DelaneyM 4y agoIf you're just "not sure", buying puts wouldn't help. Running puts & long on a single equity is assuming a specific yield shape. A good example would be an upcoming test result report for a pharmaceutical - it's either going strongly and gradually up (long) or suddenly and significantly down (put), but not gradually down (in which case you'd be out on both puts and longs). But yeah, at this point you're a super-sophisticated investor and all of this discussion is meaningless. :)