Sometimes it is also used for privatization of public company.
In Indian context it may be advantageous if it means increasing the efficiency . breaking the bottlenecks , opening of floodgates of progress. Refer BALCO.
It may also mean landing into the charges of corruption. Refer centour hotel.
Here is what it means from the global point of view.
Disinvestment refers to the use of a concerted economic boycott, with specific emphasis on liquidating stock, to pressure a government towards policy or regime change. The term was first used in the 1980s, most commonly in the United States, to refer to the use of a concerted economic boycott designed to pressure the government of South Africa into abolishing its policy of apartheid. The term has also been applied to actions targeting Northern Ireland, Myanmar, and Israel.