"Investment factor timing: Harvesting the low-risk anomaly using artificial neural networks''. (Philipp A. Dirkx and Thomas L.A.Heil)
Abstract:
We perform investment factor timing based on risk forecasts exploiting the low-risk anomaly. Among various
risk measures, we find downside deviation most suited for this task. We apply Long Short Term Memory
Artificial Neural Networks (LSTM ANNs) to model the relationship between macro-economic as well as financial
market data and the downside deviation of factors. The LSTM ANNs allow for complex, non-linear long-term
dependencies. We use LSTM-based forecasts to select high- and low-risk factors in setting up an investment
strategy. The strategy succeeds in differentiating positive from negative yielding factor investments, and an
accordingly constructed investment strategy outperforms every factor individually as well as LASSO and
Multilayer Perceptron neural network benchmark models.
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