The following table summarizes our investments in marketable securities at October 29, 2022, January 29, 2022 and October 30, 2021 (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | October 29, 2022 | | | Cost or
Amortized Cost | | Gross Unrealized
Holding Gains | | Gross
Unrealized
Holding
Losses | | Estimated
Fair Value | | Commercial paper | $ | 24,789 | | | $ | 136 | | | $ | — | | | $ | 24,925 | | | Fixed income securities | 5,060 | | | — | | | — | | | 5,060 | | | Total marketable securities | $ | 29,849 | | | $ | 136 | | | $ | — | | | $ | 29,985 | | | | | | | | | | | | January 29, 2022 | | | Cost or
Amortized Cost | | Gross Unrealized
Holding Gains | | Gross
Unrealized
Holding
Losses | | Estimated
Fair Value | | Commercial paper | $ | 64,235 | | | $ | 9 | | | $ | (11) | | | $ | 64,233 | | | Fixed income securities | 32,794 | | | — | | | — | | | 32,794 | | | | | | | | | | | Total marketable securities | $ | 97,029 | | | $ | 9 | | | $ | (11) | | | $ | 97,027 | | | | | | | | | | | | October 30, 2021 | | | Cost or
Amortized Cost | | Gross Unrealized
Holding Gains | | Gross
Unrealized
Holding
Losses | | Estimated
Fair Value | | Commercial paper | $ | 64,261 | | | $ | 12 | | | $ | (1) | | | $ | 64,272 | | | Fixed income securities | 31,965 | | | — | | | — | | | 31,965 | | | Total marketable securities | $ | 96,226 | | | $ | 12 | | | $ | (1) | | | $ | 96,237 | |
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