Integrated assemblies and methods forming integrated assemblies

An integrated assembly, comprising:

• a column of shared capacitor electrode material extending vertically through a stack of alternating first and second levels;
• the first levels being capacitor-containing levels and comprising paired laterally-extending capacitors;
• each set of the paired capacitors including a first capacitor and a second capacitor, with the second capacitor being substantially a mirror-image of the first capacitor along a plane which extends vertically through a center of the column of the shared electrode material;
• each laterally-extending capacitor comprising a first electrode and a second electrode, and in a vertical cross section, each first and second electrode comprises substantially the same vertical dimension;
• at least one of the first and second electrodes of the capacitors including container-shaped electrodes which are coupled with source/drain regions associated with access devices;
• the shared electrode material extending along inner and outer surfaces of the container-shaped electrodes, and being spaced from the inner and outer surfaces by capacitor dielectric material;
• the second levels being insulative levels comprising one or more insulative materials;
• and
• wherein at least one source/drain region of each laterally-extending capacitor comprises a concave shape.