The current institutional shareholding score of NorthWestern Energy Group Inc is 10.00, ranking 1 out of 66 in the Electric Utilities & IPPs industry. The latest institutional shareholding proportion is 109.68%, representing a quarter-over-quarter increase of 11.35%. The largest institutional shareholder is ETHSX, holding a total of 434.83K shares, representing 0.78% of shares outstanding, with 0.00% increase in holdings.