Algorithms are all over the equity markets the past year whether you believe it or not. I would like to answer two questions for you in this post: What do they do? How do they operate
What do algo's really do?
In a nut shell they are in place to wreak havoc on momentum traders.. well no actually they are designed in theory to "add liquidity" to a thin market, while reducing the spread between bid/ask. I personally do not care if the spread is a nickel if the price is stable and not going to be whipped around by 100 shares flipped back and forth 50 times in 1 second. The wizard behind the curtain really is using these algo's to race up offers or down bids ahead of decent size resting limit orders in the book.
What do algo's really do?
In a nut shell they are in place to wreak havoc on momentum traders.. well no actually they are designed in theory to "add liquidity" to a thin market, while reducing the spread between bid/ask. I personally do not care if the spread is a nickel if the price is stable and not going to be whipped around by 100 shares flipped back and forth 50 times in 1 second. The wizard behind the curtain really is using these algo's to race up offers or down bids ahead of decent size resting limit orders in the book.