Furthermore, I was concerned about the John Hancock preferred strategies, as they exhibited far higher volatilities compared to peer funds.

Source: https://seekingalpha.com/article/4603989-hpf-financials-exposure-dragging-down-preferred-shares-avoid?source=feed_all_articles

Step 4: Using those measured volatilities, we generate 100,000 random shocks at each time step and derive the resulting yield curve.

Source: https://seekingalpha.com/article/4651130-negative-treasury-spreads-for-longer?source=feed_all_articles