Raining Data Corp. (Nasdaq:RDTA), Vaalco Energy, Inc. (NYSE:EGY) and Titan Machinery Inc. (Nasdaq:TITN) were among the new 52-week highs established during Friday's trading among companies with market capitalizations or values under $750 million.

Gencor Industries, Inc. (Nasdaq:GENC), InsWeb Corp. (Nasdaq:INSW) and Clayton Williams Energy, Inc. (Nasdaq:CWEI) were also among the 52-week small-cap highs.

Here are Friday's 52-week small-cap highs:

Shares of InsWeb Corp. (Nasdaq: INSW) are in negative territory on news before the start of trading that the insurance information website is being sued by Autobytel Inc. (Nasdaq: ABTL) for patent infringement.

Irvine, Calif.-based Autobytel, a small-cap automotive marketing services company, has filed a lawsuit in the U.S. District Court for the Eastern District of Texas against micro-cap InsWeb, according to news reports. Autobytel is seeking damages and wants a permanent injunction.

Gold River, Calif.-based InsWeb said it was surprised to hear of the lawsuit and is convinced it is not guilty of any wrongdoing.

Shares of InsWeb (INSW) were down 14.18%, or $1.53, at $9.26 at today’s closing.

Slade's Ferry Bancorp (Nasdaq: SFBC), Metabolix, Inc. (Nasdaq: MBLX) and Salary.com, Inc. (Nasdaq: SLRY) are among the biggest percentage gainers in Friday's trading among companies with market capitalizations under $750 million.

Here are today's biggest percentage gainers:

Cardica, Inc. (Nasdaq: CRDC), Virco Mfg. Corp. (Nasdaq: VIRC) and Applix, Inc. (Nasdaq: APLX) are among the biggest percentage gainers in Wednesday's trading among companies with market capitalizations under $500 million.

Here are today's biggest percentage gainers:

Schmitt Industries, Inc. (Nasdaq: SMIT), DRAXIS Health Inc. (Nasdaq: DRAX) and NVE Corp. (Nasdaq: NVEC) are the biggest percentage losers in Thursday's trading among companies with market capitalizations under $500 million.

Here are today's biggest percentage losers:

Developer and marketer of software solutions and services Smith Micro Software, Inc. (Nasdaq: SMSI), announced the availability of its new StuffIt Wireless Windows Mobile Edition today.

Shares of Cleveland BioLabs Inc. (Nasdaq: CBLI) were up on a report that the U.S. Department of Defense may be the first customer for the company’s radiation protection compound called Protectan or CBLB502.

These are the biggest percentage gainers in Friday’s trading among companies with market capitalizations under $500 million:

April 17 (SmallCapInvestor.com) – The Dow almost set a new closing record high today following news of low core inflation and stronger-than-expected home construction data.  Small caps did not fare as well, with shares of teeth whitening company BSML Inc. (Nasdaq: BSML) falling on news of a possible delisting, while InsWeb Corporation’s (Nasdaq: INSW) doubled its stock price after reporting its first ever profit.

The Russell 2000 failed to improve after Monday’s record close, losing 2.48 points, or 0.30 percent, to 828.96.  The Dow Jones Industrial Average was unable to set a new closing record despite adding 52.58 points, or 0.41 percent, to 12,773.04.  The record is 12,786.64, set on Feb.20.

April 17 (SmallCapInvestor.com) – Stocks are posting small gains this morning following news of stronger-than-expected home construction in March and an easing of inflation.  Among small caps, weak quarterly sales are hurting shares of Universal Forest Products, Inc. (Nasdaq: UFPI), while InsWeb Corporation (Nasdaq: INSW) is surging after reporting its first ever profit.

At 10:50 AM the Russell 2000 was down 0.56 points, or 0.07 percent, to 830.88.  The Dow Jones Industrial Average had gained 57.13 points, or 0.45 percent, to 12,777.59.

InsWeb Corp. (Nasdaq: INSW) announced after-hours Monday that it turned the corner to profitability for the first time.

For the first quarter ended March 31, the Gold River, Calif.-based online insurer posted net income of $400,000, or $0.10 per share, on revenue of $8.1 million, versus a net loss of $1.7 million, or $0.41 per share, on revenue of $7.7 million in the prior year period.

Shares of Netlist Inc. (Nasdaq: NLST) fell $0.86, or 14.4%, to $5.11 in after-hours trading Monday after the memory subsystems manufacturer issued a lower-than-expected revised first-quarter guidance. Irvine, Calif.-based Netlist said it now expects to report earnings per share of $0.02 to $0.03 per share on revenue of $37 million to $38 million. The firm had previously issued guidance of $0.07 to $0.08 per share on revenue of $40 million to $42 million. Three analysts polled by Thomson First Call were expecting earnings per share of $0.08 on revenue of $41.2 million for the quarter ended March 31. Netlist CEO Chuck Hong cited operating expenses and decreased customer demand for the revised guidance.