Foreign exchange platform puts the brakes on high-frequency traders

EBS has changed its rules to discourage algobots.

EBS, a major interbank trading platform in in the foreign exchange market, is considering imposing a major change in the way it runs its market in order to discourage high-frequency trading from taking place.

EBS currently runs on the principle of "first in, first out" trading, where trades are dealt with in the exact order they are made. That is the way most people expect the market to work – but it also gives an advantage to those who can get their trades in quickest. That leads to the arms race that high-frequency trading has seen in the last few years, where traders pay to place their servers close to the exchange, to whittle off those last few microseconds.

Instead of this model, EBS is considering bundling together incoming trades and dealing with them in a random order. That way, every trade that came in in (for example) the tenth of a second between 12:00:00.0 and 12:00:00.1 would be grouped together and dealt in a random order, removing the advantage that the trader who got in at 12:00:00.01 would normally have.

Speaking to the FT, the chief executive of EBS explained why the company has made the decision:

The first twenty years of algorithmic trading have added great transparency and led to the compression of spreads – all great things. But there is a line beyond which marginal speed and smaller trade sizes add no value and actually harm the markets. At some point we, the public markets across asset classes, crossed that line.

The ‘first in, first out’ model sounds fair and plausible, but in modern public markets it implies ‘winner takes all’.

The classic example of how high(er)-frequency trading can have positive effects comes from the fact that the desire to shave seconds off the response time to financial information is the reason why the undersea cables linking London to New York are so high quality. Without that motivation to profit, the cables might not have been laid for decades after, and certainly wouldn't be as fast as they are now. (In fact, the USD/GBP exchange rate is still known as "cable" now, after the first transatlantic cable laid in 1858).

But as the speed of trades has increased ever higher, the side-benefits are shrinking. The difference in liquidity between a market where a tenth of a second and a thousandth of a second matters is minuscule; even if spreads might be a tiny bit tighter than they otherwise would be, no normal trader is helped by that "improvement".

So EBS's speed limit is a welcome step. By dealing with trades in a semi-random order, it removes the incentive to spend millions on shaving off the smallest fractions of time. Ironically, the companies which will benefit most in the short term are the high-frequency traders themselves, who already have the technology to trade speedily, and now don't need to worry about investing more on ever-diminishing returns. But eventually, more and more traders will match that capability, until the market becomes a level playing field again.

The other reason why traders – even high-speed ones – ought to thank EBS is that if the exchanges get HFT under control, then there's one less reason for governments to step in. Discouraging high-frequency trades is one of the strongest reasons for introducing a financial transaction tax. That hits everyone, not just the speedy traders.

A new data-centre in Manhattan. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

Photo: André Spicer
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“It’s scary to do it again”: the five-year-old fined £150 for running a lemonade stand

Enforcement officers penalised a child selling home-made lemonade in the street. Her father tells the full story. 

It was a lively Saturday afternoon in east London’s Mile End. Groups of people streamed through residential streets on their way to a music festival in the local park; booming bass could be heard from the surrounding houses.

One five-year-old girl who lived in the area had an idea. She had been to her school’s summer fête recently and looked longingly at the stalls. She loved the idea of setting up her own stall, and today was a good day for it.

“She eventually came round to the idea of selling lemonade,” her father André Spicer tells me. So he and his daughter went to their local shop to buy some lemons. They mixed a few jugs of lemonade, the girl made a fetching A4 sign with some lemons drawn on it – 50p for a small cup, £1 for a large – and they carried a table from home to the end of their road. 

“People suddenly started coming up and buying stuff, pretty quickly, and they were very happy,” Spicer recalls. “People looked overjoyed at this cute little girl on the side of the road – community feel and all that sort of stuff.”

But the heart-warming scene was soon interrupted. After about half an hour of what Spicer describes as “brisk” trade – his daughter’s recipe secret was some mint and a little bit of cucumber, for a “bit of a British touch” – four enforcement officers came striding up to the stand.

Three were in uniform, and one was in plain clothes. One uniformed officer turned the camera on his vest on, and began reciting a legal script at the weeping five-year-old.

“You’re trading without a licence, pursuant to x, y, z act and blah dah dah dah, really going through a script,” Spicer tells me, saying they showed no compassion for his daughter. “This is my job, I’m doing it and that’s it, basically.”

The girl burst into tears the moment they arrived.

“Officials have some degree of intimidation. I’m a grown adult, so I wasn’t super intimidated, but I was a bit shocked,” says Spicer. “But my daughter was intimidated. She started crying straight away.”

As they continued to recite their legalese, her father picked her up to try to comfort her – but that didn’t stop the officers giving her stall a £150 fine and handing them a penalty notice. “TRADING WITHOUT LICENCE,” it screamed.


Picture: André Spicer

“She was crying and repeating, ‘I’ve done a bad thing’,” says Spicer. “As we walked home, I had to try and convince her that it wasn’t her, it wasn’t her fault. It wasn’t her who had done something bad.”

She cried all the way home, and it wasn’t until she watched her favourite film, Brave, that she calmed down. It was then that Spicer suggested next time they would “do it all correctly”, get a permit, and set up another stand.

“No, I don’t want to, it’s a bit scary to do it again,” she replied. Her father hopes that “she’ll be able to get over it”, and that her enterprising spirit will return.

The Council has since apologised and cancelled the fine, and called on its officials to “show common sense and to use their powers sensibly”.

But Spicer felt “there’s a bigger principle here”, and wrote a piece for the Telegraph arguing that children in modern Britain are too restricted.

He would “absolutely” encourage his daughter to set up another stall, and “I’d encourage other people to go and do it as well. It’s a great way to spend a bit of time with the kids in the holidays, and they might learn something.”

A fitting reminder of the great life lesson: when life gives you a fixed penalty notice, make lemonade.

Anoosh Chakelian is senior writer at the New Statesman.