SPDR S&P 500 (SPY)

[BuzzOnDaBeach]

The UPRO/SPXU pair has much better volume that the SPXL/SPXS. The Direxion pair was introduced about a year ago when they did away with the BGU/BGZ (russell 1000 3x). So it hasn't really gained the following yet of the UPRO/SPXU. The UPRO does a better job of tracking 3x the index although like all leveraged etf's there is substantial decay over time due to the derivatives, but for shorter term trading, it's superior to the spxl/spxs.

Always remember the leveraged will never return 3x over a long period of time because of derivative decay which also means it can go down more than 3x on a correction. I trade the UPRO/SPXU but never hold longer than 2 weeks.

Buzz