Comments by "Samson Soturian" (@samsonsoturian6013) on "The Index Fund/ETF Bubble - How Bad Is It Really?" video.
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@frenchmarty7446 algorithmic traders make small risk free profits through arbitrage methods. For instance, if investors dump an ETF faster than it can be redeamed, then the ETF will trade at a discount to NAV (Net Asset Value). An algorithm will see this, buy the fund, short the stocks it holds, and correct that problem for a small profit. We saw how during the outbreak of war in Europe, traders either couldn't or wouldn't touch Russian assets, so Russian ETFs in the US traded at as much as 50% discount to NAV because there were no arbitragers.
There's also statical arbitrage, convertable arbitrage, bond arbitrage, triangular arbitrage, and a bunch others that turn a progit by keeping the market sane and there are many funds that specialize in it.
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