I don't know if there's a tax-efficient structure that you can use to extract the money into some fund (pension?), and then use that fund as collateral on a loan next year to buy the stock you need?
No. I'm afraid that this suggestion would'nt work.
OP, you have obviously discussed this issue with your accountant & he/she has either failed to give you an adequate answer or is not well versed in his/her profession. Perhaps you should consider changing accountant if you need to recourse to AAM to get a response on this issue!