Yes and no. Becoming and operating a clearing firm is both a fairly complex and not exactly a cheap enterprise It all depends on what product (or more accurately, which exchange traded product) you want to self-clear for. Phase 3, as far as I know, can only do US equities, not most of the derivatives (options, futures, etc, etc). There is GMI, which does options and futures.
For sufficiently large trading firms (for instance, Timber Hill self-cleared, obviously, which became InteractiveBrokers), it might make sense to self-clear. However, even firms like Susquehanna does not self-clear, due to ...
Keep in mind, to operate a clearing firm, it is not just the simple putting up capital to guarantee the trades, and netting out the position movements, it is also financing the positions (margining, risk-based haircuts, stock loan in case of equities, etc, etc), so it naturally becomes not just a "processing" operation.
One type of setup that was done in the past (but you can see obviously why not so much now) is something called a "facility management agreement'. Basically a firm acquires its own clearing rights (all the clearing memberships, surety bonds at the clearing corp), and then "outsources" the actual operation of the clearing processing to a larger-clearing firm. A well known example of this type of setup is The Traders' Clearing Alliance, for both Eurex and LIFFE products. Fortis Clearing is the "facility manager", I believe.
Naturally, clearing firms usually will only perform "facility management" as a last resort. Since they can make a lot more by actually clearing the trades, rather than "operate" the clearing "processes". But for a large enough customer, TCA, the volume still makes up for it.
To see how much setting up a clearing firm costs, here is a rather well known (in Chicago anyways) example. Madison Dearborn Partner's investment into Pax Clearing (which is eventually acquired by Merrill Lynch Professional Clearing, in '04 I believe). MDP invested $67.5M into Pax back in 2001.
http://findarticles.com/p/articles/mi_m0EIN/is_2000_Sept_12/ai_65168916
But note that Pax attempted to be a clearing firm for pretty much all US traded products.
Quote from nitro:
Has someone gone the route of self clearing? What does it take in terms of money, regulation, software, etc? Have you written your own back office software, and is it mostly an accouting system specialized for securities transactions? Can you lease a sofware that would allow you to do some of the clearing functions, and when does it make sense (breakeven analysis, etc)? How does straight through processing allow you to do some clearing functions but not all, and save money? A large part of your comission bill is clearing.
Here is a program that I believe can do the entire gammut of clearing:
http://www.sungard.com/Phase3/
I have a million questions. I realize there is probably five people on ET that can answer these questions, but I thought it would give it a try.
nitro