hi venkatesh,
what happens if you increase your simulation time? It looks like your system is not settling within your chosen simulation time.
You should also have a look at the amplitude of your signal: it's in the picovolt range, so it is not really a signal at all.
p.s. the topic does not really fit to LDOs
![Wink Wink](https://designers-guide.org/forum/Templates/Forum/default/wink.gif)
greets
dave