Comment by tines

Comment by tines 3 days ago

16 replies

> Shorting tends to be intrinsically harder because the market goes up over time and Americans are generally optimists

Also, with shorting the best you can do is double your money (if the stock goes to 0), while you can lose an unlimited amount (as there’s no cap on a rising stock); whereas with going long, you can only lose all your money (again, if it goes to 0), but you can gain an unlimited amount.

ryandamm 3 days ago

Except for leverage... but the general point remains that the upside is capped and the downside in theory is not.

dktp 3 days ago

This is incorrect. The way shorting works is you borrow a stock (and keep paying premium for the duration) and sell it

Premiums are usually small, so you can make many multiples of paid premium

And since their business model is releasing the findings, which in turn makes the stock drop, they can time their short position very well and don't need to pay premiums for long

  • tines 3 days ago

    I think you misunderstood what I meant by "your money" in "double your money" (and I was unclear). You can only earn the value of the stocks you borrow. When trading long, the gain is unlimited.

    According to Investopedia, "the Federal Reserve Board requires all short sale accounts to have 150% of the value of the short sale at the time the sale is initiated" so it's the same principle as going long with margin. You can leverage yourself but there's a limit.

    • dgacmu 3 days ago

      Yes, but borrowing short is fundamentally leveraged. As long as the stock doesn't increase in value, you don't need much of your own cash to secure it - because you're holding the cash from selling it.

      But, of course, that gets ugly when the stock goes up; that's when you have to start putting your own money in against the borrow.

    • BeetleB 3 days ago

      You borrow 10 shares that are currently worth $10 each. You immediately sell and get $100.

      The price drops to $1 per share. You spend $10 to buy those shares and return your loan.

      So you spent $10 and made $90. That's a 9x gain.

      Yes you cannot make more than $100. But of course you can! Do the short on 1000 shares instead of 10.

      The more confident you are of the share price going down, the more shares you borrow. Unlimited upside.

      • tines 3 days ago

        Isn't this a bit like arguing that you can make infinite money by borrowing infinite money and going long? You have to maintain margin requirements which limits how many shares you can borrow so again, you can really only double your money (not even double, iiuc your account has to have 150% of the value of your short), unless there's something I'm not seeing.

      • Dylan16807 3 days ago

        You need to put up a lot more than $10 to do that borrow. Quite limited upside.

    • sidewndr46 3 days ago

      uhh, no. When trading long your gain is limited by the depth of the order book. Stock price isn't relevant if there are 3 buyers out there looking to buy 2 shares each and you're sitting on 100,000 shares

      • Dylan16807 3 days ago

        The order book refills over time and normal humans will never exhaust it.

handfuloflight 3 days ago

See put options.

  • NickC25 3 days ago

    The song remains the same - the stock can only go to zero. The upside of a put is effectively capped at (strike price minus stock price) * 100. Going long via shares or calls is unlimited.

    • twic 3 days ago

      Right, but the price of the put is much less than the price of the stock, and the price of the put is the denominator.

      Right now, Walmart is at $91.34, and you can buy a put at $88 expiring on 24th January for $0.18 [1]. If you buy one, and the stock goes to zero by then, you spent $0.18 and gained $88, a 488x return. January 2026 at $86.67 is $5.35 - a mere 16x return.

      [1] https://www.nasdaq.com/market-activity/stocks/wmt/option-cha...

      • NickC25 2 days ago

        You'd spend $0.18 per share, yes, but the option's price is $18, not $0.18. So your return would be roughly 4.1x, not 488x. Remember options contracts are counted in hundreds, so $0.18 is the price per share, not per contract.

        • twic 2 days ago

          If you're going to work it out per options contract, then you spend $18, and get to sell 100 shares at $88. 100 * $88 / $18 is still 488x.

          (This number is large because Walmart is not going to go bust in the next few days! It serves to illustrate the arithmetic, but maybe it's not the most realistic example.)