The current institutional shareholding score of Allison Transmission Holdings Inc is 10.00, ranking 1 out of 182 in the Machinery, Tools, Heavy Vehicles, Trains & Ships industry. The latest institutional shareholding proportion is 97.34%, representing a quarter-over-quarter decrease of 9.97%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 2.72% of shares outstanding, with 0.20% decrease in holdings.