Bookkeeping: Starting New Position Ultrashort Technology (REW)

I've been sticking with 5 Ultrashorts - covering commercial real estate, small caps, financials, china, and foreign emerging markets... I am going to add a technology Ultrashort ETF to make my exposure 6 names.

I am starting a position in Ultrashort Technology (REW) which can work as a hedge against my Apple, Research in Motion, etc type of positions. I'm beginning with a simple 300 share exposure (roughly $21K) or 1.9% of the fund but as with all my Ultrashorts I add/decrease these incrementally often. EDIT: Instead purchased 425 shares or 2.7% position. So if the market weakened considerably as the day passes, I'd probably add more here. The current price is $68s/$69s... in the panic lows Tuesday this spiked to low $80s.

Here is a link to the ETF's home page

and it's goal is as follows
UltraShort Technology ProShare seeks daily investment results, before fees and expenses, that correspond to twice (200%) the inverse (opposite) of the daily performance of the Dow Jones U.S. Technology IndexSM

The Dow Jones US Technology Index is as follows (top 10 names)
MSFT 13%
AAPL 7.6%
CSCO 7.2%
GOOG 7.1%
INTC 6.8%
IBM 6.5%
HPQ 5.7%
ORCL 3.9%
QCOM 2.8%
DELL 2.1%

I actually like many of the names above from the long side, but again if we get some more of that panic selling, at least I have some exposure to the inverse of these positions. The reversal today in Microsoft (MSFT), which is actually down right now, after a stellar earnings report is in a word... troubling. Again, this at least gives me some NASDAQ specific "insurance".

The other name I was considering was Ultrashort QQQ (QID) which is double the inverse of the Nasdaq 100 Index

The top positions there are as follows
AAPL 13.7%
MSFT 6.5%
GOOG 5.6%
QCOM 4.1%
RIMM 3.6%
CSCO 3.3%
INTC 3.1%
ORCL 2.7%
GILD 2.4%
EBAY 1.9%

So its essentially the same theme - I overlayed the performance of the 2 instruments over 3 month and 6 month time frames and they were relatively similar; so I could of picked either one and probably will get a similar result.

Long Ultrashort Technology in fund; no personal position