Summation is a thoroughbred horse born in Australia in 2022. Race horse Summation is by So You Think (NZ) out of Valley Sweetheart (AUS) , trained by Chris Anderson. Summation form is available here. Owned by Think Big Stud (Mgr: D G Ramage), S J Williams, R K Smith, M A Tobin, D J Cleary, P D Brownsdon, Westcode Pty Ltd (Mgr: D G Ramage), Ms J Findlay, B Hanly, P Waldren & Anderson Racing (Mgr: C M Anderson).