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Show HN: Find the 10 highest and 10 lowest correlations to any stock

betagainst.fun

111–120 of 147 posts

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#111
post #110

Earlier quoted context omitted.

Did friend forget to put loss stops when issuing orders..

Not sure about the friend, but it happens to the best of us. Somebody on Wall Street has my money.

I am trying to understand this part.

Setting stop loss for qualified trader should be like looking around when you are crossing the street on intersection.

There some people may have gambling problem, or software has bugs, but it is another story..

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#112
Searching “By industry” doesn’t make a lot of sense. Do you mean “within the same industry”?

Mispelling “higest” in tab.

A convenient tool. I’m restricted from trading in my employer’s stock. There are no rules about trading in a highly correlated proxy.

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#114
post #110

Earlier quoted context omitted.

Not sure about the friend, but it happens to the best of us. Somebody on Wall Street has my money.

I am trying to understand this part. Setting stop loss for qualified trader should be like looking around when you are crossing the street on intersection. There some people may have gambling problem, or software has bugs, but it is another story..

If I think a thing should be worth 45, and I buy it for 40, and then it goes down to 30, I'd rather buy more than sell?

I've never understood stop-loss, it seems to me that by using stop-loss, one is basically saying "I don't know what the fundamental value is and if it goes down I want to sell". Then, why buy the thing in the first place?

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#115
post #104
post #82

Earlier quoted context omitted.

TL;DR: Correlations does not imply causation. Having said that, if you can find a negative correlation AND there is a strong reason to believe that the negative correlation will hold as long as X and Y hold, then the tool could be very useful.

How would one determine what X and Y are?

The idea is that you search for negative correlations and then you look into the two asset, if there is some relationship. For example if the price of oil goes down the stock price of Ford should go up.

The correlation is only a first indicator.

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#116
post #40

Earlier quoted context omitted.

Not with options. If you want to bet against a company you with options you can do it by either: 1. Buy a put. The put gives you the right to sell the stock at a certain price. If it goes below that price you make a profit, if it doesn’t your put is worthless. The maximum you can lose is what you paid for the put. 2. Sell a Call. This gives someone the right to buy the stock at a certain price (and you promise to sel…

> > doesn't betting against a stock have infinite loses? > Not with options. you maybe meant to say "not when you buy options": > 2. Sell a Call. This gives someone the right to buy the stock at a certain price (and you promise to sell at that price). If the stock is below that price your profit is what you sold the call. Your maximum loss is infinite since a stock price has no (theoretical) limit.

By this logic not buying a stock has infinite loss potential. The stock you didn't buy today might be worth anything tomorrow.

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#117
post #114

Earlier quoted context omitted.

I am trying to understand this part. Setting stop loss for qualified trader should be like looking around when you are crossing the street on intersection. There some people may have gambling problem, or software has bugs, but it is another story..

If I think a thing should be worth 45, and I buy it for 40, and then it goes down to 30, I'd rather buy more than sell? I've never understood stop-loss, it seems to me that by using stop-loss, one is basically saying "I don't know what the fundamental value is and if it goes down I want to sell". Then, why buy the thing in the first place?

You long an asset because you expect to sell it at a higher price (or because it hedges against some other asset in your portfolio). You short an asset because you expect to buy it back at a lower price. Not every strategy has a strong opinion on the fundamental value of an asset (none of the strategies I run do), and even those that do, might place an offer higher than their fundamental value because they know that the other side of the market is willing to pay that higher price. Similarly, one might sell an asset below their fundamental value because they believe the price will continue to move against them in the short term.

A strategy that indiscriminately buys more of an asset as the asset price goes down only works with an infinite bankroll. Such a strategy run with a finite bankroll will necessarily blow up eventually. Rigid stop losses mostly just increase the volatility of a strategy though (which also contributes to portfolio drag). A sustainable strategy harvests volatility of the underlying (mean reversion) and/or dynamically deleverages (momentum) as the price moves against the entry.

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#118
post #114

Earlier quoted context omitted.

I am trying to understand this part. Setting stop loss for qualified trader should be like looking around when you are crossing the street on intersection. There some people may have gambling problem, or software has bugs, but it is another story..

If I think a thing should be worth 45, and I buy it for 40, and then it goes down to 30, I'd rather buy more than sell? I've never understood stop-loss, it seems to me that by using stop-loss, one is basically saying "I don't know what the fundamental value is and if it goes down I want to sell". Then, why buy the thing in the first place?

Just because you think it's worth 45, doesn't mean everyone else agrees. You'd ideally want to stop out somewhat close to your open and reassess your trade, and maybe even reverse on a break under. I'd rather get out at 38 and look at buying in again at 30 than holding and hoping.

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#119
post #88

Data source? Did you correct for splits and dividends? Why not use returns? Nice idea, but we’re left with so many questions.

Data source are dailys from alphavantage: https://www.alphavantage.co/documentation/#daily

Prices are not adjusted, as these are not free.

Re: Show HN: Find the 10 highest and 10 lowest correlations to any stock

#120
post #53

How does this submission have both text and a URL? When hitting submit it's shown as either/or. Does the server not enforce it?

It happened more by accident. I only used the field to compose the "first" comment, but then I hit submit before cutting the text.
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