The tremendous growth momentum in high-frequency trading (HFT) seems to have reached its limits in recent years. The increasing cost of infrastructure and relentless competition within the industry are probably the first to blame.
In addition, high-frequency trading firms are hardly participating in those dark pools where large block transactions are executed. Both trends are challenging their business model and trading strategies as HFTs have seen their revenues and profits erode. Furthermore, forthcoming tighter prudential regulatory oversight may lead to an overhang of capacity in the HFT industry.