Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of Universal Display (Nasdaq: PANL) surged more than 30% in early trading after news broke yesterday that Samsung had signed a six-and-a-half-year supplier contract with the company.

So what: For years, Samsung had been hedging its bets by signing only three-month extensions. Now, Universal Display can more confidently plan production of OLED technology for use in Samsung screens.

Now what: The deal is also apparently better. Rather than per-unit royalties -- a common risk-reducing measure in the early stages of a supplier relationship -- Universal Display will now be paid an upfront license fee. The implication? The company's OLED technology has proven itself. Don't be surprised if LG Display (NYSE: LPL) and peer manufacturers agree to similar terms. Do you agree? Would you buy at these levels? Weigh in using the comments box below.

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