$ProShares Ultra Bloomberg Natural Gas (BOIL.US)$ Let's do some Proshares reverse stock splits calculation since the inception. Let's say u have 10,000 shares and went thru 5 reverse stock splits.
10,000 = 1:5 = 2000
2000 = 1:4 = 500
500 = 1:5 = 100
100 = 1:10 = 10
10 = 1:20 = 0.5
Your 10,000 shares became 0.5 fractional share.
Worth 0.5x$24.4(26/1/24)=$12.2 today's value
This ETF also doesn't have a dividend. The worst ETF.

$ProShares Ultra Bloomberg Natural Gas (BOIL.US)$ Proshares is the worst fund manager I have ever seen. Check their website. They are doing a lot of reverse stock split to their funds. Since BOIL is listed on 10/04/2011. The share price keeps going down. There is no bottom. Proshares has done 5 huge reverse stock splits and destroying share holders' interest just to keep this fund afloat. Is this fund a scam? Be careful when investing in this fund. 

$Tesla (TSLA.US)$ Tesla tonight, killing all the put