Short-sellers have also flocked to this outperformer, as more than 7.1 million SPWR shares have been sold short.

FORBES: Solar Stock Superstars

Then it happened, on January 25, the day of the big speech and my pending catalyst for the move, SunPower (SPWR) was off.

FORBES: They're Baaaack!

That transition in the market has driven tremendous growth for companies like SunPower (nasdaq: SPWR - news - people ).

FORBES: Tom Werner

Morgan Stanley will own and finance solar electric power systems from SunPower (nasdaq: SPWR - news - people ) on seven other Wal-Mart facilities in California.

FORBES: Paying For Panels

Among the largest underlying components of ERX, in trading today Quicksilver Resources, Inc. ( NYSE: KWK) is up about 5.3%, SunPower Corp ( NASD: SPWR) is down about 4.8%, and Sandridge Energy, Inc. ( NYSE: SD) is up by about 1.3%.

FORBES: Notable ETF Outflow Detected - ERX, KWK, SPWR, SD

This gain was on normal trading volume and completely consistent with the bullish move in other solar-related stocks today such as such as GT Advanced Technologies (GTAT), First Solar (FSLR), MEMC Electronic Materials (WFR), SunPower Corp. (SPWR) and Veeco Instruments (VECO).

FORBES: Explain This One, Part 2