Honeywell is expected to present its portfolio review next month before reporting earnings on October 20, Deutsche Bank analyst John Inch tells investors in a research note titled "Possible Big Bang."

He believes a majority of investors expect the results of the review to be something of a "non-event", with the company likely opting to retain its Aerospace business and perhaps "fine-tune" other aspects of the portfolio. Inch, on the other hand, thinks Honeywell may opt to separate up to 30% of its profits. The company could announce the sale or spin off its Turbochargers business and most of its Home and Building Technologies businesses, the analyst contends. He estimates that if Honeywell were to spin or sell Turbochargers and most of HBT, the stock could rise by greater than 14%, unlocking potentially up to $20B in equity value or more. Inch keeps a Buy rating on the shares with a $154 price target.

Honeywell in early trading is up 50c to $139.19.