Black hole–stellar mass relation showing the overmassive BH in J1120+0641 (gold). Purple points show z ≳ 6 quasars with stellar mass estimates from JWST (Ding et al. 2023; Yue et al. 2024). Pink points show dynamical mass measurements for z ≃ 6 quasars as measured with JWST (Marshall et al. 2023), while grey points show dynamical mass measurements as measured with ALMA (Willott et al. 2017; Izumi et al. 2018, 2019; Pensabene et al. 2020). Blue points show measurements for high-z AGNs discovered with JWST (Maiolino et al. 2024; Harikane et al. 2023; Übler et al. 2023; Kokorev et al. 2023; Juodžbalis et al. 2024; Furtak et al. 2024; Napolitano et al. 2024). Green points show samples of low-z sources with large M_BH/M_* ratios (Mezcua et al. 2023; Trakhtenbrot et al. 2015; van den Bosch et al. 2012). The grey dashed lines depict M_BH/M_* ratios of 0.1%, 1%, 10%, and 100%. The coloured curves show the local Reines & Volonteri (2015) and Greene et al. (2020) relations, with the shaded regions showing the ±1σ scatter in the relations, for comparison.