The ETF opened at $41.72 and closed at its low for the day, $41.31, which makes sense as most of the solar stocks closed in the range of 625-740 nanometers (red).
When I went to the link-vault for Van Eck's KWT page, this popped out:
Van Eck phreaking
Van Eck phreaking is the process of eavesdropping on the contents of a CRT display by detecting its electromagnetic emissions. It is named after Dutch computer researcher Wim van Eck, who in 1985 published the first paper on it, including proof of concept.  Phreaking is the process of exploiting telephone networks, used here because of its connection to eavesdropping.Not sure why that was in the file.
Here's the KWT page. More useful, right now, is Ardour Global Indexes SOLRX constituent page.
First Solar at 10.62% down to Daystar Tech. at 0.36%, I am intrigued.