This was bound to happen. Stock Exchanges do not like uncertainty at all. Removal of uncertainty was bound to reflect in PSX.
Also, since PML-N has a record of focusing on economy, so this also seems to be a given. SS has a reputation for improving administrative efficiency and that is something that had been sorely missing. Also, we may expect an improvement in FDI.
First paragraph I agree with.
Second, highly disagree. PMLN's focus has never so much been on the economy as much as it has been on vanity projects that have little to no practical value, but are large and easy to show off.
SS does not have a reputation for improving administrative efficiency, he has a reputation of gutting vital function to get rid of checks and balances, this is how he makes money.
FDI has traditionally suffered during PMLN eras, as N-league has always emphasized imports over exports. This is why things get cheap during their eras, but why the country always comes close to the brink of bankruptcy.
Expect Pakistan's ForEx to start depleting quickly, and Shahbaz to seek an IMF loan to prop them up, something the PTI government was close to cutting off. Also expect the PMLN to not pay back loans properly, sky rocketing Pakistan's external debt in the few years due to increased interest penalties on that unproperly paid debt.
Also, expect tax collection to plummet, making government revenue suffer as a result, due to the fact that PMLN always drags its feet on tax collection.
Oh, and all those projects and shiny new toys the army just got? Expect those to suffer as a result of not being able to suddenly afford them.