This is a well informed and put together article. Up to date technically and the Author knows what he is talking about. As a former HF trader I endorse it, great piece.
I walked away and moved onto more exciting things like entrepreneurship. As the author states, HFT is like rebuilding gravity models every week, so your product is not sustainable and doesn't grow, cash generation from HFT also is usually not scalable on a per strategy basis.
My company builds memory ICs that sometimes sit beside the ASIC or FPGA on an HFT card. The bandwidth & latency numbers didn't surprise me, but the cost of power certainly did. No wonder customers are always crawling up our butt on power consumption.
