Small-Cap Charts Go Wild

Maybe it's the return of bubble mania, but shares of an outsize number of tiny, no-name companies have caught fire lately, and that has some urging caution.

The ones burning up the charts the past month aren't big-cap names, but little-known concerns like Industrial Services of America(IDSA Quote), up 806% to $40; Vaso Active Pharmaceuticals(VAPH Quote), up 309% to $36; and Unifab International(UFAB Quote), up 660% to $10.30.

Trading, meanwhile, in these small-cap Nasdaq stocks has been frenetic, with the demand far outstripping the relatively few shares each company has issued. ...