The TRADE 51 | Page 73

[ A L G O R I T H M I C T R A D I N G Fig 4: Number of providers used (% of responses) S U R V E Y ] 2015 2016 2017 33.3 23.4 1-2 34.0 26.2 22.1 3-4 31.1 40.5 5+ 54.5 34.9 0 10 20 30 40 50 60 24.7% in 2015 down to just 4.8% in 2017, almost the exact oppo- site of the higher bracket. This suggests that, those firms which were already heavy users of algos have simply become even fonder of them and shifted more trading into the automated space. Low- er-down the scale, only the sub-5% category reveals any interesting trend, having grown from 3.9% in 2016 to 9.4% this year, though this is still well below the 13.3% seen in 2015. Still, it seems some firms may be cutting back on the automated trading, perhaps due to a reali- sation that algorithmic trading does not always produce the best results, especially for those with more complex needs. And finally we come to Fig 6, which shows the percentage of firms using particular algos. Straight off the bat we can see that partici- pation-based algos have continued their fall in popularity seen last year, dropping down to 52.9%, well below the 79.1% seen in 2015. Last year’s most popular choice, the dark liquidity seeking algo, continues to lead the field this year with only a small decline from 81.9% in 2016 to 79.9% this year. It is unclear what the impact of dark pool caps in Europe will have on this. While it could push more firms to execute large-in-size orders (because they’re excluded from the dark pool cap) that are normally not auto- mated, it could also increase the importance of being able to tap into dark liquidity when it is available. TWAP’s popularity has fallen over the past couple of years and is now used by just 16.3% of firms, while VWAP staged a recovery after falling from 50.2% in 2015 to 43.7% last year, it’s now back up to 48.7% meaning this particular strategy seems to be relatively adaptable to changing market conditions. This year’s survey definitely paints an interesting picture and gives some insight into how 2017 - which is bound to be dominated by discussion of MiFID II in both Europe and other parts of the world - is seeing changing attitudes towards automated trading. How- ever, readers may already be keen to know what will be discovered in next year’s survey, when the new rules will be in force and the true consequences for buy-side trading will begin to become apparent. Issue 51 TheTradeNews.com 73