Seeking for the cheapest liquid asset

[Bum]

SPY
Go with commission-free broker.

 

[Trader R]

For futures, using your definition of "cheap," the cheapest markets to trade are the bond market and the S&P.

For spot, the cheapest market is the S&P 500 ETF, SPY.

 

[Overnight]

NQ has the largest dollar volatility and the largest ($20.00) tick size of the index futures. UB is the largest dollar volatility rate future, and both ZB and UB have the large $31.25 tick size.

Also, rate futures traded on ECBOT have LESS exchange fee than CME and ECBOT index futures.

NQ is $5 per tick.

 

[WiktorK]

SPY
Go with commission-free broker.

Im posting my orders through FIX API and as far as I have researched this there are no brokers offering FIX with no commissions, but hopefully Im wrong