Combined DRAM and NAND revenue was higher in Q4 2019 with revenue increasing $0.7 billion to $27.5 billion, says Yole Developpement.

Revenue for Q4-19 rose 2.5% compared to Q3 2019 and decreased 23.4% compared to Q4 2018.

Demand in Q4-19 was robust due to seasonality and recovering datacentre demand.

Supply growth was somewhat constrained due to low production growth and normalizing inventory levels.
 
Profitability for the NAND vendors improved in Q4-19, but industry margins remained negative, at -3%, with Samsung the only supplier posting positive margins.
 
DRAM market share rankings for Q4 2019 did not change, with Samsung retaining the top spot, Hynix at No.2, Micron retaining third place, and Nanya holding onto fourth place.

DRAM capex was cut significantly (~30%) in 2019 and, as late as Q3-19, plans existed at suppliers to reduce capex  by as much again in 2020.

NAND outlook for early 2020 appears to be favorable for the suppliers. NAND pricing will increase in Q2 given current pricing momentum, normalized inventory levels, and limited production growth, offsetting lower seasonal demand growth.