$PSI got tagged in the chip selloff. The Invesco Semiconductors ETF is down about 18.1% over the past 30 days, near $113.06, and about 25.0% over the quarter (i

$PSI got tagged in the chip selloff. The Invesco Semiconductors ETF is down about 18.1% over the past 30 days, near $113.06, and about 25.0% over the quarter (intraday as of ~9:50 AM PT on Nov 13 — not the official close; the blog had the 30-day drop closer to -16%). Why it went down: a rotation ou…