  In quantum computation, series of quantum gates have to be arranged in a
predefined sequence that led to a quantum circuit in order to solve a
particular problem. What if the sequence of quantum gates is known but both the
problem to be solved and the outcome of the so defined quantum circuit remain
in the shadow? This is the situation of the stock market. The price time series
of a portfolio of stocks are organized in braids that effectively simulate
quantum gates in the hypothesis of Ising anyons quantum computational model.
Following the prescriptions of Ising anyons model, 1-qubit quantum gates are
constructed for portfolio composed of four stocks. Adding two additional stocks
at the initial portfolio result in 2-qubits quantum gates and circuits.
Hadamard gate, Pauli gates or controlled-Z gate are some of the elementary
quantum gates that are identified in the stock market structure. Addition of
other pairs of stocks, that eventually represent a market index, like Dow Jones
industrial Average, it results in a sequence of n-qubits quantum gates that
form a quantum code. Deciphering this mysterious quantum code of the stock
market is an issue for future investigations.
