=. Private equity investing tends to grow more lucrative and popular during periods when stock markets are riding high and interest rates are low and less so when that cyclicals less favourable. . Private equity investing tends to grow more lucrative and popular during periods when stock markets are riding high and interest rates are low and less so when that cyclicals less favourable. . Private equity investing tends to grow more lucrative and popular during periods when stock markets are riding high and interest rates are low and less so when that cyclicals less favourable.