5 ms·
The machines help humans. The bid/ask spread on a $100 share in 1970 as $5. Now it's $0.003 cents and it will continue to narrow, saving you and I money.
by missedthecue 6y ago
The machines help humans. The bid/ask spread on a $100 share in 1970 as $5. Now it's $0.003 cents and it will continue to narrow, saving you and I money.
- adrianN 6y agoHow big would it be if we limited machine trading such that milliseconds don't matter? Say run everything with 1Hz frequency instead?
- logicchains 6y agoIt would be much wider, because the dumber your pricing, the less certain you can be about how the price may move, so you have to be more cautious and quote wider.
- arnoooooo 6y agoThis sounds like circular logic to me. It really saves money to people who want to buy and sell often, which has no social value. I think having a penalty for buying and selling too often is a feature, not a bug : we want investors that think long term.
- logicchains 6y ago>which has no social value Who made you the global arbiter of social value? Clearly the people participating in the transaction see some value in it.
- icelancer 6y ago>> I think having a penalty for buying and selling too often is a feature, not a bug : we want investors that think long term. This already exists. It's the long-term capital gains tax reduction compared to short-term cap gains tax, and very high corporate taxes (relative to the rest of the world).
- ChrisLomont 6y agoIt benefits the majority of adults in the US and the vast majority of retirees who have exposure to stock vis retirement accounts. It has benefits to every pension fund, including teachers and public sector unions. I could continue, but don’t poo poo things of which you don’t understand the components or utility.