Evidence that $SPY was manipulated by HFT?
Check out this Tweet and image
Modern Joe Saluzzi interview on HFT order flow
This is a shockingly good interview so do check out this Youtube video
Ok here it is! Everyone wanted an REALLY AFFORDABLE WAY to learn quant and potential HFT. Here it is
Hope this help you outFACEBOOK ACCOUNT and TWITTER. Don't worry as I don't post stupid cat videos or what I eat!