Investments and Other Marketable Securities |
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| Marketable Securities [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Investments and Other Marketable Securities | Investments and Other Marketable Securities Investments on the accompanying Consolidated Balance Sheets consist of:
Available For Sale Debt Securities The Company's available-for-sale debt securities consist of
Unrealized holding losses, net of income tax benefit, at September 30, 2026 and December 31, 2025 of available-for-sale debt securities were:
The unrealized losses are associated with the Company’s investments in mortgage-backed securities issued by GNMA and were caused by interest rate increases (See Note 4). The contractual cash flows of these securities are guaranteed by an agency of the U.S. government. Accordingly, it is expected that the securities would not be settled at a price less than the amortized cost bases of the Company's investments. The Company does not intend to sell the investments and it is not likely that the Company will be required to sell the investments before recovery of their amortized cost bases. The unrealized losses, net of unrealized gains, associated with the Company's available-for-sale debt securities are reported as a separate component of Accumulated other comprehensive loss on the accompanying Consolidated Balance Sheets. The following tables provide the scheduled maturities of the Company's available-for-sale debt securities:
There were no material realized gains or losses from available-for-sale debt securities during the nine months ended September 30, 2026 and 2025, respectively. Investment Products and Equities The Company's investments in investment products and equities had a fair value of $70,144 and $67,414 at September 30, 2026 and December 31, 2025, respectively. There were no material realized gains or losses during the nine months ended September 30, 2026 and 2025, respectively, from investment products and equities. Investments in Affiliated Funds The Company has an investment in funds sponsored by LSV. The Company records this investment at fair value. Unrealized gains and losses from the change in fair value of these funds are recognized in Net gain from investments on the accompanying Consolidated Statements of Operations. The Company's investment in the funds had a fair value of $14,176 and $11,593 at September 30, 2026 and December 31, 2025, respectively. The Company recognized unrealized gains of $2,583 and $2,393 during the nine months ended September 30, 2026 and 2025, respectively, from the change in fair value of the funds. Securities Owned The Company’s broker-dealer subsidiary, SIDCO, has investments in U.S. government agency securities with maturity dates less than one year. These investments are reflected as Securities owned on the accompanying Consolidated Balance Sheets. Due to specialized accounting practices applicable to investments by broker-dealers, the securities are reported at fair value and changes in fair value are recorded in current period earnings. The securities had a fair value of $25,750 and $33,777 at September 30, 2026 and December 31, 2025, respectively. There were no material net gains or losses related to the securities during the three and nine months ended September 30, 2026 and 2025. Cash Equivalents Investments in SEI-sponsored and non-SEI-sponsored money market funds and commercial paper classified as cash equivalents had a fair value of $255,318 and $235,933 at September 30, 2026 and December 31, 2025, respectively. There were no material unrealized or realized gains or losses from these investments during the nine months ended September 30, 2026 and 2025. Cash equivalents includes $89,189 and $201,675 at September 30, 2026 and December 31, 2025, respectively, invested in SEI-sponsored open-ended money market investment products. Investments in money market funds and commercial paper are Level 1 assets.
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