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EU plans to regulate High Frequency Trading will hurt investors

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Published 26 September 2012

EU proposals to regulate high frequency trading under MiFID may well end up raising transaction costs for end-investors and pushing trading into the dark rather than making markets more transparent, argues Remco Lenterman.

Remco Lenterman is chairman of the FIA European Principal Traders Association.

"The negotiations on the revision of the EU’s law for securities markets, the Markets in Financial Instruments Directive (MiFID), are entering a crucial phase. Some proposals may well end up raising transaction costs for end-investors and pushing trading into the dark rather than making markets more transparent.

My particular concern is the proposed obligation for ‘algorithmic market making strategies’ to quote continuously under any market condition. This is one of the most controversial articles in the review.  It is also the one whose objective remains elusive. However, its effects are clear: market making under these conditions will be almost impossible. This is despite the fact that even the most skeptical authorities acknowledge the importance of electronic market makers on exchanges. For example, they are exempted from France’s new financial transaction tax.

It seems to be lost on advocates of the continuous quoting rule that it is unprecedented.  We are aware of no legislation anywhere that requires a group of market participants to continuously bear risk, without regard to proper risk management.  In other words, if your market and operational risk systems tell you that it is prudent to withdraw a quote from the markets, this law would prohibit it, in direct contradiction with another article in MiFID regarding the need for risk controls.  Forcing a group of participants to continuously bear risk in these markets is akin to forcing banks to lend money to anyone who walks into their branches regardless of credit history.  Oh, and when one of their branches fails to open one day because of a flooding problem, they are in contravention of the law

If that were not enough, other proposals in MiFID would also severely restrict the job of an electronic market maker. To explain this, it is helpful to give a short history of exchange traded markets. When the option markets first started to move from the floor to electronic trading, electronic market makers used to enter bids and offers manually. This was relatively easy because spreads (the difference between the bid and the ask price) were high in those days and once entered, these orders needed updating just  a few times a day as option prices moved up and down.  When markets became more competitive, and technology more advanced, market makers started to use algorithms to update prices.  This meant that spreads narrowed, benefiting end users, who ultimately pay the difference between the bid and the offer. 

Naturally, the narrower the spread, the more price updates a market maker needs to send and as a result the number of unexecuted orders goes up.  Exchanges have accommodated this increase in speed and data traffic because of the causal positive link between speed and capacity, and narrow spreads and added liquidity, which is precisely what they strive for.  As a result, the ratio of unexecuted orders over executed orders (the order to trade ratio) in some exchange traded derivative markets is very high, sometimes in the thousands.  That is not because these market makers do not want these orders to execute. Rather, that there is a lack of willing buyers and sellers at that precise moment.

For whatever reason, critics have decided there is something unholy about the number of unexecuted orders and wish to put a firm limit on them. Some groups even argue for a cap of four to one.  In addition, they believe that orders should be valid for a minimum amount of time, such as half a second.  There would also be an extra charge for unexecuted orders to serve as an extra disincentive.

Think about it.  Electronic market makers would be forced to quote continuously, they would be unable to update or withdraw their prices when their risk parameters told them to, there would be limits on the number of price updates altogether and they would need to pay extra for these same updates.  It doesn’t take a rocket scientist to figure out that the only way to respond would be to significantly widen these quotes in equities and exchange traded derivatives such as options and ETFs.  Equally, the barriers to entry into electronic market making would be much higher because many participants would simply be unable to quote continuously.

Ironically, such an outcome would be a boon to many participants in the financial industry for the simple reason that wider spreads will cause more over the counter trading. This is generally more profitable than on-exchange trading – and is therefore more expensive for end users. This surely cannot be the objective of those pushing for these regulations."

COMMENTS

  • There is so mush said around HFT (High Frequency Trading). Some say it is good for the market and adds liquidity, some says it is bad and erodes the trust in the market.

    CFTC (Commodity Technical Advisory Committee) has as good as anyone else; defined HFT as:
    • algorithms for decision making, order initiation, generation, routing, or execution, for each individual transaction without human direction
    • low-latency technology that is designed to minimize response times, including proximity and co-location services
    • high speed connections to markets for order entry
    • high message rates (orders, quotes or cancellations)

    So, if you have all this – you are an HFT trader, and you have an advantage in speed compare others. Is that good or bad? Let’s walk true some HFT strategies and have a look.

    Price arbitrage
    The current price of a security is the best bid and offer on the market. Some securities are traded on many venues; the best price will therefore be on one or several of these. In US there is a law to execute on NBBO (National Best Bid and Offer). In EU there is no law, but the best price is called EBBO (European Best Bid and Offer). The costly process of developing access to EBBO has resulting in some participant only accessing a subset of EBBO. This creates price errors in the market, crossing prices on different venues that the fastest HFT firm can profit on. The solution is relative easy; get access to EBBO and time orders so that they reach all venues within such a small timespan that HFT don’t have time to act. The physical distance (speed of light) between markets will set the time spam, typically 1-2ms timing in enough to outrun any HFT firm. The different in price between market is the profit the HFT:firms make, on the cost of end customers. The agent broker-if paid only on commission of turnover-has no incentives to fix this error. HFT:firm in this case contribute in fixing errors in the market price mechanism.

    Fishing
    This equals the process of using a small order to “ping” to see if there is a big order in the market. The process is same no matter of fishing after an iceberg order or a dark pool order. The defence is easy, set a minimum accepted quantity on your order. Here regulated dark pools matching on bid/mid/offer add grate value and algorithms are naturally piling up orders in them. Fishing has always been there and is not related to HFT:firms.

    Modify reference price
    At market orders are always risky, no matter if they are in the lit book or a peg primary dark. If the lit book is thin - the cost of modifying the reference price is low. All orders should have a price limit. Prop trades have always used patterns of buy/sell orders to modify the price on short term orders. Nothing new related to HFT.

    Ticker tape trading / Event arbitrage / Statistical arbitrage
    This is either fast detection of events in the market such as news, and acting on them - or working with the fact that instrument are correlated and there could be errors in prices between instrument – and acting fast on that. None of this is new to HFT, and none is partially bad for the market. Most are contributing to a correct price in the market of all instruments and removing errors. Here HFT firms are competing with each other.

    Front running
    This is closely related to event arbitrage. To act on information before others. I.e. you manage to detect a big interesting in buying before the general market, and you fast buy yourself. And later when market catch up and price rises – you sell. This is allowed if you are an independent prop or HFT firm action on public information – and illegal if acting on own customers flow. This is not new; and once again not related to HFT. The only way to deal with this is to trade with as less market impact (avoid creating patterns) as possible using appropriate venues and algorithms. Make sure the one execute your orders have interests in line with yours and nothing else.

    Quote stuffing
    To send huge amount of orders to the market; using the fact that your HFT:firm can deal with huge amount of order flow, but others cannot. Simply buy “overloading” other’s system so that your real at tensions are hidden and you can profit on information advantage. This is market abuse since you have no real attention to trade on the orders you send. It is may be hard to separate from markets makers and other adding healthy liquidity. It is the obligation of the exchanges to detect and remove such flow from the market. Dealing with this may include the exchanges limit numbers of orders sent per second or similar, maybe allowing a higher flow of orders if your executing rate is high.

    Market makers
    Market making is a set of high-frequency trading strategies that involve placing passive buy/sell limit orders in order to earn the spread. For structured products such as warrants, there would not be a market if these market makers did not full fill their quoting obligations. The reduced spread means that the profit for market makers decreases, and there is an opportunity for other actors to step in between the market maker and the end customer. The risk for the market maker increases and the liquidity available decreases. For market making dependent products there is no benefit for anyone to have a to narrow spreads. Some exchanges offer market makers the possibility to reject orders after being hit, to protect the market maker from abuse adding to the end customers frustration of not getting all the volume he sees.

    Summary
    Markets actors are contributing to the lack of trust of the market and feed HFT firms buy not inform their customers about the market condition and giving them access to EBBO. A law may be a dramatic move, but a better solution that today. MiFID:s “Best Execution” is misleading.
    Exchanges should review their strategies and add long lasting market trust as a goal. Equal price tariffs for all market participants and better surveillance of market abuse is some tools.
    EBBO is basic health factor absolutely needed today. On top of that; you still need an efficient broker (or algorithms) since good execution is still needed on top access to the market.

    At Neonet, we strive to deliver a truly transparent and independent execution service with an optimized balance of quality and cost.

    For more information, visit www.neonet.com

    By :
    Jan Jonsson
    - Posted on :
    26/09/2012

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