Can I offset the tax accrued from the 100% sale of stocks in one company with the immediate investment in stocks in other company?

[DanielV01 · Accepted solution]

No.  Once you have a sale of stock, you have a capital sale (a taxable event) which must be reported.  The provision for a like-kind exchange (which can be used with real estate) does not apply to stocks.

Purchasing the new stock creates a new basis for a new investment.  You will not report anything additional until that stock is sold.