Separating what happened from what can be repeated
A track record mixes several things at once. Part of it comes from broad market exposure, part from factor tilts that can be replicated cheaply, part from decisions the manager actually made, and part from the particular sample of history that happened to occur.
QISTRA is built to take those apart. The objective is not to produce a score, but to state clearly what portion of performance is explained by exposure, what portion is attributable to the investment process, and what portion cannot be distinguished from chance given the length and volatility of the record.

