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by mrchicity
3490 days ago
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If you invest in ETFs, you are certainly being helped by automated arbitrage traders. These products rarely trade more than a cent from their true value because computers can calculate the hedging basket almost instantly. Yes, they have a profit motive, but competition keeps their profits small: https://meanderful.blogspot.com/2013/01/hfts-dirty-little-se... It always costs money to transact. The alternative to trading against an ETF arbitrageur's quote isn't a costless transaction at the fair price, it's manually paying the spread and transaction costs on hundreds of stocks and risking slippage. FWIW: YC probably earns more than even the biggest automated trading businesses. |
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is that true? bigger than renaissance technologies?