v3.26.1
Alger Mid Cap Growth Portfolio Annual Fund Operating Expenses - Class I2 [Member] - Alger Mid Cap Growth Portfolio - Class I-2
Dec. 31, 2025
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.76% [1]
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.16%
Acquired Fund Fees and Expenses 0.02% [2]
Expenses (as a percentage of Assets) 0.94% [2]
Fee Waiver or Reimbursement (0.02%) [3]
Net Expenses (as a percentage of Assets) 0.92%
[1] The Portfolio and Fred Alger Management, LLC (the “Manager”) have adopted fee breakpoints for the Portfolio. The advisory fee for assets up to $1 billion is .76%, and for assets in excess of $1 billion is .70%.
[2] Total Annual Fund Operating Expenses do not correlate to the ratio of gross expenses to average net assets given in the Portfolio's most recent annual report, which does not include Acquired Fund Fees and Expenses.
[3] The Manager has contractually agreed to waive fees owed to it by, or to reimburse expenses of, the Portfolio in an amount corresponding to the management fee borne by the Portfolio as an investor in any underlying Manager-sponsored fund. This commitment will remain in effect for the life of any such investment, can only be amended or terminated by agreement of the Trust's Board of Trustees and the Manager, and will terminate automatically in the event of termination of the Investment Advisory Agreement between the Trust, on behalf of the Portfolio, and the Manager. As a result of this waiver, the actual advisory fee rate paid as a percentage of average daily net assets for the year ended December 31, 2025 was .74%.