What is our option for a B1/B2 Visa Change/Adjust Status?

We would need more information with respect to this case to be able to evaluate what's the best course of action to follow.

There are several business options depending on what country you are a citizen of, whether you have a business in your home country, the amount of your investment, whether you want to come temporarily or permanently etc, etc. I would recommend a consultation to review these details and sort out what is best for you. We do charge for consultations and you can schedule one by calling my office below to select a convenient time and date. $350 per hour is the consultation fee; but whatever you pay for the consultation would then be a credit toward the fees for your case if you retain us to do work beyond the consultation.

What determines how long you can stay in the U.S. is the expiration date on your I-94, not the expiration of your visa. If you are still in status (your I-94 has not expired), then you may be able to change your status to a E2 (Treaty Investor) depending on what country you are from and how much you invested in the new business. Also, if the amount of investment exceeds $1 million (or $500,000.00 in some locations), you may be able to file for a EB-5 (Investor) Green Card. Given the circumstances you describe you should speak to an immigration attorney.