Hi Charles the answer is no MTS Shared property group manager is only for properties if you want to store object them in GIT (global interface table) but tis is very fragile if your com objects is under many hits you can start having unreleased objects.
What you can do is do an VB ActiveX Dll and put it persistable this way the dll will never die now you can create 3 methods 1 to put the object another to get and the last one to release the object if you have your DLL's in a COM + application then you should also put this dll in it.
I hope that this will help you.

>I have been using MTS's Shared Property Group Manager Component to maintain state in the middle tier. It works fine for simple data types such as counters etc.
>
>I would like to store an object in the SPM and I was wondering if anybody had ever tried this.
>
>TIA
>-Charles