OLDWICK, N.J.--(BUSINESS WIRE)--In this fourth of five “First Monday” episodes, A.M. Best Vice Presidents Jim Gillard and Ken Johnson discuss how insurers have increased their overall risk and reduced liquidity in their investment portfolios to earn extra or preserve yields. Click on http://www.ambest.com/v.asp?v=fminvestments815 to view the video program. The remaining “First Monday’ episode will focus on how fluctuating oil prices are hampering Nigeria’s insurance market. “First Monday” is A.