Figure 1: Treasury 10yr-3mo spread (blue), 10yr-2yr (red), 5yr-3mo (teal), in %. Source: Fed via FRED, US Treasury.
Figure 2: Treasury 10yr-3mo spread (blue), 10yr-2yr (red), 5yr-3mo (teal), in %, in 2019. Source: Fed via FRED, US Treasury.
Over the last month, the 10yr-3mo spread has averaged 4 bps — so not quite inversion on a monthly basis.