LSE lost 2% market share to CHI-X, Turquoise and BATS. CHI-X now holds over 30% market share.

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1 FTSE -100 BATTLEMAP Highlights LSE lost 2% market share to CHI-X, Turquoise and BATS. CHI-X now holds over 30% market share. Spreads widened both at touch and for larger deals. CHI-X continues to offer tightest spreads at touch as well as for 25,000 deal sizes. In contrast to July overall on-book liquidity decreased on all venues top of and deeper into the book, narrowing the gap between CHI-X and LSE. The battle between CHI-X and LSE at offering best prices most often at touch continued with CHI-X pulling away with a big gap. For larger deals LSE continues to lead the table.

2 CAC-40 BATTLEMAP Highlights Turquoise was the only venue to gain market share in August. Spreads continued to widen on all venues both at touch and for larger deals, increasing the gap between CHI-X and Euronext. Liquidity decreased across all venues top of and deeper into book, with a considerable decline in Euronext and CHI-X. Euronext continues to lead the best prices table; however, at touch, CHI-X has narrowed the gap significantly, quoting best prices more often on some days.

3 AEX-25 BATTLEMAP Highlights Euronext lost further market share to CHI-X, Turquoise and BATS. Similar to the CAC-40, spreads widened across all venues both at touch and for 25,000 deal sizes. On-book liquidity decreased significantly across all venues top of and deeper into book, with Euronext and CHI-X declining the most. Euronext continues to offer best prices most often; however, at touch, CHI-X is gradually closing the gap.

4 MIB-40 BATTLEMAP Highlights Borsa Italiana gained market share at the expense of all the MTFs. Spreads continued to widen considerably on all venues at touch and for larger deals. The MTFs saw a surge on 12th August on all instruments with the largest being on Impregilo and Ansaldo STS. On-book liquidity continued to drop on all venues top of and deeper into the book, though Borsa Italiana recovered some liquidity during August at 50BPS depth. Borsa Italiana continues to offer best prices most often.

5 DAX-30 BATTLEMAP Highlights Xetra and Turquoise gained market share at the expense of CHI-X and BATS. Spreads widened markedly across all venues both at touch and for larger deals. On-book liquidity dropped significantly on all venues both top of an deeper into the book. Xetra continues to offer best prices most often and has increased the gap with CHI-X for larger deal sizes.

6 OMXS-30 BATTLEMAP Highlights OMX Stockholm, BATS and Turquoise lost market share to CHI-X. For the third consecutive month spreads widened on all venues, both at touch and for larger deals. On-book liquidity continued to decrease on all venues top of and deeper into the book with OMX Stockholm showing the most decline. OMX Stockholm had a sharp rise in the beginning of the month at quoting absolute best prices, putting it at the top of the table at touch and for larger deals.

7 OMXH-25 BATTLEMAP Highlights OMX Helsinki gained market share, mainly at the expense of BATS and Turquoise. Spreads widened on all venues, both at touch and for 25,000 deal sizes. Turquoise is offering better spreads than CHI-X and BATS, despite having a lower market share. On-book liquidity continued to decrease on all venues top of and deeper into the book, with the sharpest decline at the beginning of the month. OMX Helsinki continues to quote absolute best prices most often.

8 OMXC-20 BATTLEMAP Highlights OMX Copenhagen and CHI-X gained market share at the expense of Turquoise and BATS. Spreads widened on all venues in line with the other markets. The sharp rise early in the month is due to a corporate action in Pandora on 2nd August Liquidity continued to fall across all venues top of and deeper into the book, with a sharp decline at 50BPS depth. OMX Copenhagen continues to offer best prices most often, at touch and for larger deals.

9 OBX BATTLEMAP Highlights For the first time this year Oslo Bors gained market share, at the expense of OMX Stockholm, Turquoise and BATS. Among the MTFs only CHI-X gained market share. Spreads continued to widen across all venues at touch and for larger deal sizes. The spike early in the month is due to a general widening of spreads across all instruments on 9th August, mainly Gjensidige Forsikring and Norsk Hydro. Liquidity continued to decrease across all venues top of and deeper into the book, although the trend picked up towards the end of the month. Oslo Bors is comfortably quoting best prices most often, followed by OMX Stockholm.

10 SMI-20 BATTLEMAP Highlights SIX and CHI-X gained market share at the expense of Turquoise, BATS and Quote MTF. As on other markets, spreads widened across all venues, both at touch and for larger deals. Liquidity dropped sharply across all venues top of and deeper into the book, almost halving on SIX. SIX continues to offer best prices more often than the MTFs; however, with an increase of over 5%, CHI-X is closing the gap.

11 ATX-20 BATTLEMAP Highlights Wiener Borse and Turquoise gained slight market share mainly at the expense of CHI-X. Spreads widened on all venues both at touch and for larger deal sizes, except on Turquoise where they tightened considerably. Liquidity remained relatively stable across the MTFs; however, it declined on Wiener Borse both at 10BPS and 50BPS depths. Wiener Borse continues to offer best prices more often than the MTFs.

12 Battlemap Methodology (the small print) Market Share Market shares are based on the relative notional trading values of all trades executed 'on book'. We count all on book trades during normal trading hours. We also include the uncrossing trades of on-book auction periods and 'Dark' or 'Hidden' order types on lit venues. We exclude all off-book 'reported' trades (so venues such as XPLU and BOAT don't feature in the battlemaps). We treat instruments as fungible if they have the same ISIN and currency. For some indices, i.e. AEX or CAC we count more than one listed instrument on the MTF venues as the same instrument when accessing volumes. Spreads At touch spreads To calculate spreads we first replay order books and measure the best bid and offer prices every 30 seconds. The 'spread' is the difference between bid and offer prices divided by mid price. This is then converted to basis points (0.01%). Where a book is empty or one sided or where the spread is very large (>200BPS), we mark that data value as 'bad' and assign a default spread of 201BPS for averaging purposes. If more than 10% of values are 'bad' for a venue then we exclude that venue from the results and show 'n/a'. The spread statistic we report for an instrument for a given venue is the average of all 30-second measured spreads over the period analysed. The spread we report for an index is the average of the individual instrument spreads weighted by the traded volume of each instrument. 'Depth Weighted Spreads' - i.e. 25K EUR Spread For a depth weighted spread, instead of measuring the simple best visible bid and offer in the order book, we 'match' a deal of a certain size up or down the best bids/offers available in the book until the deal size is fully matched. So, for instance, if the best bid price in a book is 1.00 EUR with volume 20,000 and the next best bid is 0.99 EUR with volume 100,000 then the depth weighted 25,000EUR bid price is ((1.00*20,000)+(0.99*5,000)) / 25,000 = EUR. Apart from this initial step of finding depth weighted bids and offers, the methodology for the rest of the calculation of the depth weighted spreads is the same as for the 'Simple' spread. Book Depths To calculate depths we replay order books and measure the total value (i.e. price*volume) of all visible bids and offers within 'X' Basis Points of the mid price every 30 seconds. The value quoted for depth is then the average of these 30-second values over the period. So, for example, if the mid price of a stock is 5.00 EUR, the '50BPS liquidity' figure will measure the total value of all bids and offers in the order book with prices between and For indices the liquidity value quoted is the average of the depths of all the constituents of the index. Best Prices 'At Touch' For this statistic we simultaneously replay all order books for an (ISIN, CCY) instrument for all venues on which it trades. Then, every 5 seconds we look at the best bid prices on all venues and see if there is either a single 'winning venue' with the absolute best bid price or a tie. Once this is done for a complete trading day we record the percentage of time each venue has the absolute best price. Although we measure this separately for bids and offers, we generally average the results over the bids and offers when reporting. These percentages do not add up to 100%! For instance, say the percentages are (LSE 20%, CHIX 20%, TRQX 10%, BATE 8%, NURO 5%). This would imply that (100-( )) = 37% of the time there was a 'tie' for the best price in the market and no one venue was 'best'. The other 63% of the time a single venue had the best price. 'Depth Weighted Best Prices' - For depth weighted best prices, instead of using the best bid or offer price in the book, we 'match' up or down the book to get weighted bid and offer prices for different size deals [same methodology as for depth weighted spreads, see above]. Apart from this way of determining the best bid and offer prices, the rest of the methodology for determining the At Best Percentages using depth weighted measures means that the volumes available at the best price and also the prices and volumes below the best price come into play. The spread we report for an index is the average of the individual instrument spreads weighted by the traded volume of each instrument.