Robo-trading: the superfast stockbroking strategy that affects your retirement funds

Advocates of HFT argue that it provides additional liquidity and so narrows the gap between buying and selling prices. Yet when market conditions turn adverse, HFT firms can switch off their robo-traders and then liquidity vanishes – as we saw in the “fla

The image of a crowded trading floor with brash young stockbrokers shouting into telephones has ceased to be representative of how most financial assets are traded. Most of today’s trading has migrated from trading floors to virtual electronic exchanges. The benefits include a more efficient system, because they provide liquidity and transparency, and also better price execution. However, in the past few years, an insidious new trend, “high-frequency trading” (HFT), has developed and is spreading stealthily.

A few critical factors explain the rapid development of HFT: the increase in computing power available to investment banks and trading firms, for example, and the deregulation of many stock exchanges in the United States and Europe.

HFT firms employ smart programmers to develop algorithms that can assess market conditions and enable computers to issue thousands of buy and sell orders automatically in less than a second. In this world, speed is everything. Certain exchanges are renting space to trading firms to allow them to locate their computers as close as possible to the exchanges, in order to reduce what is known as “latency”.

In another effort to obtain a speed advantage (of roughly six milliseconds), a dedicated transatlantic cable is being laid to connect London with New York.

Some exchanges are also selling real-time price information to the HFT firms, allowing the latter to obtain prior knowledge of order flow. This enables them to place buy or sell orders ahead of the average individual or institutional investor. (This is analogous to being in a line to buy tickets for the theatre and, as you approach the front of the queue, a tout appears ahead of you to buy the last ticket for, say, £30, then immediately sells it to you for £35.)

These speed and information advantages allow HFT firms to reap millions of dollars of low-risk profits by, in effect, “scalping” pennies off each trade. Because of the huge volume of trades, this adds up to billions of pounds overall.

So what does this mean for you and your retirement funds? Advocates of HFT argue that it provides additional liquidity and so narrows the gap between buying and selling prices.

Yet when market conditions turn adverse, HFT firms can switch off their robo-traders and then liquidity vanishes – as we saw in the “flash crash” of 6 May 2010, when the US market fell by 9 per cent in minutes. Even in normal market conditions, the algorithms used by HFT can increase the volatility of stock prices, which in turn affects the price for those investing your pension money.

What can be done? One simple idea is to limit trading firms’ ability to buy and sell in time increments of less than a second, or to impose a tax or tariff on trades that are held only for such a short time frame.

What is certain is that if nothing is done, pensioners who have saved all their working lives will lose out to the robo-traders that determine most of the current action in the stock markets.

Most financial assets are handled in a very different way to this nowadays. Image: Getty

This article first appeared in the 17 October 2013 issue of the New Statesman, The Austerity Pope

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Richmond is a victory for hope - now let's bring change across the country

The regressives are building their armies. 

Last night a regressive alliance was toppled. Despite being backed by both Ukip and the Conservative Party, Zac Goldsmith was rejected by the voters of Richmond Park.

Make no mistake, this result will rock the Conservative party – and in particularly dent their plans for a hard and painful Brexit. They may shrug off this vote in public, but their majority is thin and their management of the post-referendum process is becoming more chaotic by the day. This is a real moment, and those of us opposing their post-truth plans must seize it.

I’m really proud of the role that the Green party played in this election. Our local parties decided to show leadership by not standing this time and urging supporters to vote instead for the candidate that stood the best chance of winning for those of us that oppose Brexit. Greens’ votes could very well be "what made the difference" in this election (we received just over 3,500 votes in 2015 and Sarah Olney’s majority is 1,872) - though we’ll never know exactly where they went. Just as importantly though, I believe that the brave decision by the local Green party fundamentally changed the tone of the election.

When I went to Richmond last weekend, I met scores of people motivated to campaign for a "progressive alliance" because they recognised that something bigger than just one by election is at stake. We made a decision to demonstrate you can do politics differently, and I think we can fairly say that was vindicated. 

There are some already attacking me for helping get one more Liberal Democrat into Parliament. Let me be very clear: the Lib Dems' role in the Coalition was appalling – propping up a Conservative government hell bent on attacking our public services and overseeing a hike in child poverty. But Labour’s record of their last time in office isn't immune from criticism either – not just because of the illegal war in Iraq but also their introduction of tuition fees, privatisation of our health service and slavish worship of the City of London. They, like the Liberal Democrats, stood at the last election on an austerity manifesto. There is a reason that we remain different parties, but that doesn’t mean we shouldn't also seize opportunities like this to unite behind what we have in common. Olney is no perfect candidate but she has pledged to fight a hard Brexit, campaign against airport expansion and push for a fair voting system – surely progressives can agree that her win takes us forward rather than backwards?

Ultimately, last night was not just defeat of a regressive alliance but a victory for hope - a victory that's sorely needed on the back of of the division, loss and insecurity that seems to have marked much of the rest of this year. The truth is that getting to this point hasn’t been an easy process – and some people, including local Green party members have had criticisms which, as a democrat, I certainly take seriously. The old politics dies hard, and a new politics is not easy to forge in the short time we have. But standing still is not an option, nor is repeating the same mistakes of the past. The regressives are building their armies and we either make our alternative work or risk the left being out of power for a generation. 

With our NHS under sustained attack, our climate change laws threatened and the increasing risk of us becoming a tax haven floating on the edge of the Atlantic, the urgent need to think differently about how we win has never been greater. 

An anti-establishment wave is washing over Britain. History teaches us that can go one of two ways. For the many people who are utterly sick of politics as usual, perhaps the idea of politicians occasionally putting aside their differences for the good of the country is likely to appeal, and might help us rebuild trust among those who feel abandoned. So it's vital that we use this moment not just to talk among ourselves about how to work together but also as another spark to start doing things differently, in every community in Britain. That means listening to people, especially those who voted for Britain to leave the EU, hearing what they’re saying and working with them to affect change. Giving people real power, not just the illusion of it.

It means looking at ways to redistribute power and money in this country like never before, and knowing that a by-election in a leafy London suburb changes nothing for the vast majority of our country.

Today let us celebrate that the government's majority is smaller, and that people have voted for a candidate who used her victory speech to say that she would "stand up for an open, tolerant, united Britain".  But tomorrow let’s get started on something far bigger - because the new politics is not just about moments it's about movements, and it will only work if nobody is left behind.

 

Caroline Lucas is the MP for Brighton Pavilion.