Littelfuse, Inc.
US ˙ NasdaqGS ˙ US5370081045

SecurityLFUS / Littelfuse, Inc.
InstitutionHolocene Advisors, LP
Latest Disclosed Ownership6,453 shares
Latest Disclosed Value $ 2,189,826
Holocene Advisors, LP reports 39.82% decrease in ownership of LFUS / Littelfuse, Inc.

On May 15, 2026 - Holocene Advisors, LP filed a 13F-HR form disclosing ownership of 6,453 shares of Littelfuse, Inc. (US:LFUS) valued at $2,189,826 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 10,723 shares of Littelfuse, Inc.. This represents a change in shares of -39.82% during the quarter. The current value of the position is $3,127,446 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F LITTELFUSE COM 537008104 6,453 -4,270 -39.82 2,190 -19.28 0.0053
2026-02-17 2025-12-31 13F LITTELFUSE COM 537008104 10,723 -4,797 -30.91 2,712 -32.52 0.0057
2025-11-14 2025-09-30 13F LITTELFUSE COM 537008104 15,520 -11,834 -43.26 4,020 -35.19 0.0092
2025-08-14 2025-06-30 13F LITTELFUSE COM 537008104 27,354 720 2.70 6,202 18.36 0.0151
2025-05-15 2025-03-31 13F LITTELFUSE COM 537008104 26,634 12,933 94.39 5,240 62.30 0.0153
2025-02-14 2024-12-31 13F LITTELFUSE COM 537008104 13,701 -2,033 -12.92 3,229 -22.65 0.0103
2024-11-14 2024-09-30 13F LITTELFUSE COM 537008104 15,734 634 4.20 4,173 8.14 0.0169
2024-08-14 2024-06-30 13F LITTELFUSE COM 537008104 15,100 -1,840 -10.86 3,859 -5.99 0.0161
2024-05-15 2024-03-31 13F LITTELFUSE COM 537008104 16,940 10,025 144.97 4,105 121.89 0.0151
2024-02-14 2023-12-31 13F LITTELFUSE COM 537008104 6,915 4,386 173.43 1,850 196.00 0.0072
2023-11-14 2023-09-30 13F LITTELFUSE COM 537008104 2,529 2,529 625 0.0027
2021-02-16 2020-12-31 13F LITTELFUSE COM 537008104 0 -2,288 -100.00 0 -100.00
2020-11-16 2020-09-30 13F LITTELFUSE COM 537008104 2,288 -2,709 -54.21 406 -52.40 0.0031
2020-08-14 2020-06-30 13F LITTELFUSE COM 537008104 4,997 -8,759 -63.67 853 -53.51 0.0075
2020-05-15 2020-03-31 13F LITTELFUSE COM 537008104 13,756 10,782 362.54 1,835 222.50 0.0197
2020-02-14 2019-12-31 13F LITTELFUSE COM 537008104 2,974 -4,815 -61.82 569 -58.80 0.0051
2019-11-14 2019-09-30 13F LITTELFUSE COM 537008104 7,789 -1,233 -13.67 1,381 -13.47 0.0142
2019-08-14 2019-06-30 13F LITTELFUSE COM 537008104 9,022 1,902 26.71 1,596 22.86 0.0204
2019-05-15 2019-03-31 13F LITTELFUSE COM 537008104 7,120 7,120 1,299 0.0199
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.