Fast trading & prop trading
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1 Fast trading & prop trading Bruno Biais, Fany Declerck, Sophie Moinas Toulouse School of Economics FBF IDEI Chair on Investment Banking and Financial Markets Very, very, very preliminary! Comments and leniency welcome! Paris, April 2013
2 Issues Do financial markets fulfill their mission: price discovery, risksharing, allocative efficiency? Matters for welfare: corporate financing, savings Necessary condition: adequate liquidity must be provided Potential problem: asymmetric information => adverse selection => gains from trade can t be reaped To ensure adequate liquidity supply & mitigate adverse selection, how should markets be organized? Which types of trading should be encouraged, or regulated? 2
3 Focus of this paper Which orders and traders are informed generating adverse selection costs for others? Which are profitable? Are fast traders more informed? More profitable? Are limit or market orders more informed? More profitable? Another important characteristic of traders is whether they act on their own account (prop trading) or on behalf of customers (brokers). Does this affect informativeness, profitability? What s the relative magnitude of the different effects? 3
4 Literature Baron, Brogaard, Kirilenko (2012): E-mini S&P 500 futures Fast market orders earn profits From opportunistic traders (0.5 bp), fundamental traders (0.25 bp), small traders (1 bp) Brogaard, Hendershott, Riordan (2012): Nasdaq Fast market orders are informed since they are in the direction of (short horizon) price changes Fast limit orders bear adverse selection costs 4
5 Data Data from Euronext and AMF: thanks a lot to them both!! Orders and trades: including member ID Account: client, prop trader/designated market makers, related party Colocation Throughput: max number of messages per second 5
6 Sample of stocks 131 stocks traded in Euronext Paris Dropped: 9 with stocks splits, SEO, 5 with very few trades Sub-sample: 20 stocks (pilot: 30, not there yet takes time) large cap & financial: 1 stock (3 stocks) large cap & non-financial: 6 stocks (14 stocks) mid cap & financial: 1 stock (1 stock) mid cap & non-financial: 8 stocks (8 stocks) small cap & non-financial: 4 stocks (4 stocks) Other stocks = hold-out sample 6
7 Sample period (Jan 1, Sept 30, 2010) 50 VIX /01/ /02/ /03/ /04/ /05/ /06/ /07/ /08/ /09/2010 April 23: Greece asks for bailout May 7: June 14: bailout downgrade 7
8 Agency trading vs prop trading 28 members are Principal : 100% trades = pure prop trading or liquidity supply 55 members are pure Broker : 100% trades = client 52 Others : both prop trading & order placement for clients 8
9 % of members 18% Speed 16% 14% 12% 10% 8% 6% 4% 2% 0% [0-25] ]25-50] ]50-75] ]75-100] ] ] ] ] ] ] ] ] ] ] ] ] ] ] ] ] ] ] Max # messages per second «fast» = 17 members with capacity > 1300 mssg/sec (we ll do robustness checks) 9
10 5 types of players Fast Slow (>1300 mssg/sec) (< 1300 mssg/sec) Principal 6 22 (100% trades as principal) Other s Broker (0% trades as principal)
11 # of trades Fast principal Fast other Slow principal Slow broker Slow other /02/ /03/ /04/ /05/ /06/ /07/ /08/2010 Fast = around 50% of trades (17 members out of 135) Crisis => more trades (but no increase in % fast) 11
12 # of messages Fast principal Fast other Slow principal Slow broker Slow other /02/ /03/ /04/ /05/ /06/ /07/ /08/ fast members > ½ messages Increased volat => more messages (slow & fast) 12
13 9 8 7 Trade to messages ratio Fast principal Fast other Slow principal Slow broker Slow other /02/ /03/ /04/ /05/ /06/ /07/ /08/2010 Principals & fast have smaller trade to message ratio 13
14 3 2,5 Executed (non-marketable) limit orders/market orders Fast principal Fast other Slow principal Slow broker Slow other 2 1,5 1 0,5 0 23/02/ /03/ /04/ /05/ /06/ /07/ /08/201 Most aggressive = prop traders Fast not more aggressive than slow Stable through sample period 14
15 Information content of trades Increase (resp. decrease) in midquote (resp. decreases) after market order to buy (resp. sell) A t+δ A t - =E(v buy at t, H t -) M t - =E(v H t -) B t+δ M t+δ =E(v H t+δ -) B t - =E(v sell at t, H t -) Which types of players have more info (trades with large info content)? Fast? Slow? Principal? At what horizon? 1 second? 1 minute? 1 hour? 15
16 Measuring info content of trades (M t+δ M t -)*sign of market order (>0 if market order to buy) Empirical average for 5 different categories of MO traders Regression on dummy for type of trade + control variables: depth, spread, lagged volume-volatilitymessg/trade, dummy for the previous trade, life time, day-stock-time of day fixed effects Qualitatively similar results in both approaches 16
17 (M t+d -M t- )/ M t- x Sign Market Order Info impounded in price after 2 to 5 minutes Slow prop most informed (> 6bp) Slow brokers least informed (< 4bp) Fast traders in between (5 bp) 0,0007 Empirical average, whole sample 0,0006 0,0005 0,0004 0,0003 0,0002 0,0001 slow MO broker slow MO principal slow MO others fast MO principal fast MO others sec 0,5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min 30 min 1h D 17
18 (M t+d - M t- )/M t- x Sign market order Results qualitatively similar with regression approach (all dummies significant) Regression, whole sample 0,0007 0,0006 MO = Slow Broker MO = Slow Prop trader MO = Slow Others MO = Fast Prop trader MO = Fast Others 0,0005 0,0004 0,0003 0,0002 0,0001 0,0000-0, sec 0.5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min 30 min 1h D 18
19 (M t+d -M t- )/ M t- x Sign Market Order Midst of Crisis: Larger info content/adverse selection 0,0008 Empirical average, May June ,0007 0,0006 0,0005 0,0004 0,0003 slow MO broker slow MO principal slow MO others fast MO principal fast MO others 0,0002 0, sec 0.5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min 30 min 1h 19
20 Information content of MO (M t+δ - M t - )/M t - x Sign market order Empirical average 0,0007 0,0006 Speed Capacity = 1300 slow MO broker slow MO principal slow MO others fast MO principal fast MO others 0,0005 0,0004 0,0003 0,0002 0, sec0,5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min 30 min 1h Speed Capacity = 1600 Speed Capacity = ,0007 0,0007 0,0006 0,0006 0,0005 0,0005 0,0004 0,0004 0,0003 0,0003 0,0002 0,0002 0,0001 0, sec 0.5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min30 min 1h sec0.5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min 30 min 1h
21 Liquidity suppliers profits Are they buying (resp. selling) at price below (resp. above) expected value (proxied by later midquote)? A t+δ A t - M t+δ B t+δ B t - Which types of players provide liquidity more profitably? Fast? Slow? Principal? Does profit measure vary with horizon? 1 second? 1 minute? 1 hour? 21
22 Measuring limit order profits (M t+δ - P t ) * sign of limit order (>0 if limit order to buy) Empirical average for 5 different categories of LO traders Regression on dummy for type of trade + control variables Similar results 22
23 (M t+d -P t )/M t- x Sign limit order Profits close to 0 at horizon > 1 minute Competive liquidity supply (Glosten 1993)? Fast limit orders slightly more profitable > 5 minutes 0,0006 0,0005 0,0004 Empirical average, whole sample slow LO broker slow LO principal slow LO others fast LO principal fast LO others 0,0003 0,0002 0, sec 0,5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min 30 min 1h -0,0001-0,
24 (M t+d -P t )/M t- x Sign limit order Midst of Crisis: Larger losses for limit orders, especially slow (consistent with increased adverse selection) 0,0006 0,0005 0,0004 Empirical average, May June 2010 slow LO broker slow LO principal slow LO others fast LO principal fast LO others 0,0003 0,0002 0, sec 0.5 sec 1 sec 30 sec 1 min 2 min 5 min 15 min 30 min 1h -0,0001-0, ,0003
25 Do fast limit order cope better with adverse selection? If so, fast liquidity suppliers have competitive edge over slow liquidity suppliers => Share of liquidity provision by fast traders increases when adverse selection increases Compare: Total number of fast limit orders executed Total number of limit orders executed out of the crisis and during the crisis 25
26 % of executed limit orders that are fast larger during crisis 0,7 60.5% 62.4% 59% 0,68 0,66 0,64 0,62 0,6 0,58 0,56 0,54 0,52 23/02/ /03/ /04/ /05/ /06/ /07/ /08/20 26
27 Conclusion Prop traders most informed (market orders with highest info content) & most aggressive (rely most on market orders) => adverse selection for others Slow prop more informed than fast, except during crisis Crisis: more adverse selection/losses for limit orders Limit orders profits close to 0: competitive liquidity supply (Glosten 1993)? Fast limit orders more profitable than slow Fast = larger fraction of liquidity supply during crisis Fast limit orders cope better with adverse selection? 27
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