ProShares Ultra Silver (AGQ)

[zsvq1p]

I guess you don't have to use margin on that trade... This post may be hard to read... But shows your return had you shorted both for the following months.

This is 6 months! 38%

Date	Initial investment	Short PPS	Share sold short	cost	Date	Cover buy PPS	Cost	Earnings	% 
 4/6/2011 $1,000	 $248.07	4	 $992.28 	 9/31/11 	$104	$415		 
 4/6/2011 $1,000	  $20.92	48	 $1,004.16 	 9/31/11 	$17	$821		 
 			    net: 	 $1,996.44 		net:	$1,236	                         $760.44 	38% 
 

This three months 23%

Date	Initial investment	Short PPS	Share sold short	cost	Date	Cover buy PPS	Cost	Earnings	% 
 4/6/2011 $1,000	 $166.75	6	 $1,000.50 	 9/31/11 	$104	$622	.	. 
 4/6/2011 $1,000	  $18.65	54	 $1,007.10 	 9/31/11 	$17	$924	.	. 
 .	.	.	   net: 	 $2,007.60 	 . 	    net:	$1,546	  $461.58 	23% 
 

One month..

 
 Date	Initial investment	Short PPS	Share sold short	cost	Date	Cover buy PPS	Cost	Earnings	% 
 4/6/2011 $1,000	 $239.40	4	 $957.60 	 9/31/11 	$104	$415	.	. 
 4/6/2011 $1,000	  $10.92	92	 $1,004.64 	 9/31/11 	$17	$1,574	.	. 
 .	.	.	   net: 	 $1,962.24 	 . 	  net:	$1,989	 $(26.60)	-1%