• absGeekNZ@lemmy.nz
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    2 days ago

    The stock market is chaos, driven by bias and a bunch of unknown and unknowable variables.

    A simple example with 3 players.

    • P1 thinks stock A is a good buy (for whatever reason) at $1/unit. P1 decides to buy putting upward pressure on the price.
    • P2 has been holding a bunch of A for a while and has a number ($1) in mind to sell at, P1 can’t know this information. This sale puts downward pressure on the price.
    • If P1 & P2 have the same number of shares, the pressures are equal, and the price doesn’t move. If they don’t the price moves either up or down.
    • P3 has been watching A, sees that it moves and decides that this is a good time to buy, (going down its a bargain, going up its on the rise get in early), putting further upward pressure on the stock.

    Each action by the different players causes something to happen to the price, no-one can know all the internal thought patterns of all the other interested parties, and thus can never have perfect information. And even with perfect information, it may not be possible to predict, as some stocks interact in non-predictable ways.

    e.g. Nvidia goes up, TSMC usually goes up, but not always. TSMC going down can be caused by Nvidia, but also thousands of other things also.

    Conclusion: can the stock market be predicted? General trends - Yes, specific stock movements - No!

    • Blurntout@lemmy.ca
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      2 days ago

      Wait until you learn about passive indexes where the logic is you give me money = buy and then factor in the volume of assets under management in that cycle. Then take a look at retirement age and global average age trending closer towards retirement age lol do the math on that one

      • See‽ It’s a glitch in the matrix. They added the feature, but failed to work it out in advance and coded themselves into a corner.

        I think what happened is that they spent all the budget up front, really nailing stuff like Physics and Evolution, and then came to a crunch and Management said, “just throw something in there! We’ll polish it later,” only it’s so self contradicting, they can’t.