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: Altair Nanotechnologies (Nasdaq: ALTI) shares popped more than 10% today. With a share price well under $1, small movements in the lithium-ion battery maker's share price result in big percentage changes.

So what: On Monday, Altair announced that it would do a 1-for-4 reverse split of its shares to increase its stock price and ensure that it keeps its Nasdaq listing. The reverse split is scheduled to take effect on Nov. 16. The company also announced that a $2.2 million order from Zhuhai Yintong Energy Co. had been accelerated, so delivery would occur by year's end.

Now what: Following the company's reverse split, a broader range of investors may be willing and able to own the company's shares. Also, watch for news in Altair's third-quarter earnings, which it is scheduled to report tomorrow.

Interested in more info on Altair? Add it to your watchlist by clicking here.

Fool contributor April Taylor does not own shares of the companies mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.