My talk has two parts: first I will introduce the SkyMapper Southern Survey from its early days to the near-final stages it is now in, and mention a few highlights of the work it has enabled, including work on metal-poor stars in the Galaxy and low-redshift changing-look AGN. In the second half, I will present results on high-redshift QSOs, focussing at the bright end and what this may tell us about the evolution of supermassive black holes in the early universe. The SkyMapper high-z QSO program has found an unprecedented number of 4>z>5.5 QSOs that suggest an upward correction of the bright end of the luminosity function. The sample includes the most massive black hole at high-z, estimated at 34 billion solar masses at z=4.7.

* https://www.mso.anu.edu.au/~cwolf/Wolf_SNU_2021.pptx