for a liquid stock, say google, why VWAP can’t be used in urgent trade(we should use IS), for a large order, say 1mil share of apple buy, why can’t use VWAP again,
does limit order always has higher transaction cost than market order? how can I judge is a best execution, say I buy 200 share of apple but incured transaction cost 1000 USD, can it be a best execution?
VWAP - tries to minimize the cost by mimicking the volume pattern of the stock…typically during the day
IS - tries to minimize the delay cost by trading early…alos if you are sitting on an information which others dont know…to avoid leakage of info & trying to capture maximum by trading early thru market order
normally in trading department, VWAP is like this: we slice 100 mil sell of BAC into different small slice lot, then submit through crossing network, and this can be done very early morning,
so can i say TWAP is ok for urgent trade?
for large order not urgent, do we prefer VWAP or IS?
I would say ECN’s provide more anonymity than Brokers do. If trader was very sensitive to being left anonymous, I’d say go with ECN - especially for very large orders with low liquidity and time is not a factor. If time starts to outweight anonymity then use Broker.
Isn’t there a chance of missing the trade execution completed in ECN’s and incurring a large Missed Trade Opportunity Cost, while the chances for this in Brokered market are pretty less. Probably it comes down to the degree of anonymity?
TWAP is useful when the volumes are low and irregular , spreading out the trade by time interval would be more likely to catch a small volume appearing suddenly. You couldn’t depend on VWAP , simply because it is too irregular for a volume algorithm to work reliably , also the stock is not liquid enough to use IS
Crossing network : for low urgent order. Anonymity. But no price discovery. Broker : for high urgency and illiquid market. Some anonymity. Price disciovery?