LITTELFUSE INC LFUS
COM · Common Stock · CUSIP 537008104 · ISIN US5370081045
American electronic manufacturing company
- SectorIndustrials
- IndustrySwitchgear & Switchboard Apparatus
- HeadquartersRosemont, IL
- Founded1927
- Websitelittelfuse.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($56.2m this quarter). Holder counts are more reliable. Shares outstanding: 25.3m as of 2026-05-01, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $337.35. Options: 7 managers hold calls ($15.0m notional), 5 hold puts ($12.5m).
Trends to Q1 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 359 |
| Q4 2022 | 359 |
| Q1 2023 | 361 |
| Q2 2023 | 379 |
| Q3 2023 | 375 |
| Q4 2023 | 392 |
| Q1 2024 | 422 |
| Q2 2024 | 400 |
| Q3 2024 | 426 |
| Q4 2024 | 413 |
| Q1 2025 | 411 |
| Q2 2025 | 442 |
| Q3 2025 | 493 |
| Q4 2025 | 471 |
| Q1 2026 | 533 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 177 | 209 |
| Q3 2024 | 201 | 162 |
| Q4 2024 | 168 | 198 |
| Q1 2025 | 204 | 186 |
| Q2 2025 | 256 | 177 |
| Q3 2025 | 252 | 173 |
| Q4 2025 | 193 | 232 |
| Q1 2026 | 251 | 214 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2025 | $1.8m | $1.3m | 0.70 |
| Q3 2025 | $1.2m | $1.5m | 1.24 |
| Q4 2025 | $1.0m | $430.0k | 0.42 |
| Q1 2026 | $15.0m | $12.5m | 0.83 |
Biggest buyers
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | New | +304.6k |
| ALLIANCEBERNSTEIN L.P. | Added | +289.9k |
| Analog Century Management LP | New | +154.0k |
| Southpoint Capital Advisors LP | New | +150.0k |
| ACK Asset Management LLC | New | +135.0k |
| MILLENNIUM MANAGEMENT LLC | Added | +110.5k |
| LORD, ABBETT & CO. LLC | Added | +108.2k |
| ProShare Advisors LLC | Added | +80.1k |
| JANE STREET GROUP, LLC | Added | +62.4k |
| BlackRock, Inc. | Added | +62.3k |
Biggest sellers
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | Reduced | -567.0k |
| Corient Private Wealth LP | Reduced | -196.9k |
| T. Rowe Price Investment Management, Inc. | Reduced | -161.1k |
| Vulcan Value Partners, LLC | Reduced | -114.1k |
| Impax Asset Management Group plc | Reduced | -108.3k |
| NEUBERGER BERMAN GROUP LLC | Reduced | -102.9k |
| Perpetual Ltd | Reduced | -88.1k |
| VICTORY CAPITAL MANAGEMENT INC | Reduced | -70.9k |
| Jain Global LLC | Reduced | -67.3k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -61.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $6.6m19.4k shares |
| CenterStar Asset Management, LLC | New | $2.7m7.9k shares |
| CITADEL ADVISORS LLC | New | $2.5m7.5k shares |
| BRANT POINT INVESTMENT MANAGEMENT LLC | New | $1.7m50 shares |
| JANE STREET GROUP, LLC | New | $1.3m3.8k shares |
| SIMPLEX TRADING, LLC | New | $135.7k400 shares |
| ROYAL BANK OF CANADA | New | $68.0k200 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $4.8m14.0k shares |
| LOGAN CAPITAL MANAGEMENT INC | New | $4.1m11.9k shares |
| BRANT POINT INVESTMENT MANAGEMENT LLC | New | $1.7m50 shares |
| CITADEL ADVISORS LLC | Added | $1.5m4.3k shares |
| JANE STREET GROUP, LLC | New | $509.0k1.5k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 6.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC)
Insider purchases and sales in Q1 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2024 | 0 | — | 3 | $3.2m | — |
| Q3 2024 | 0 | — | 3 | $7.0m | $5.3m |
| Q4 2024 | 0 | — | 1 | $174.3k | — |
| Q1 2025 | 1 | $4.1m | 1 | $369.4k | $369.4k |
| Q2 2025 | 0 | — | 2 | $1.9m | — |
| Q3 2025 | 0 | — | 4 | $7.0m | — |
| Q4 2025 | 0 | — | 3 | $3.7m | — |
| Q1 2026 | 0 | — | 9 | $16.2m | $863.1k |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-02-24 | Cerniglia Kristina A. Director | Sold plan | $863.1k2.3k shares |
| 2026-02-20 | HUNTER GORDON Director | Sold | $335.0k911 shares |
| 2026-02-10 | GRILLO ANTHONY Director | Sold | $1.7m5.0k shares |
| 2026-02-06 | Gorski Jeffrey G SVP & Chief Accounting Officer | Sold | $867.2k2.5k shares |
| 2026-02-05 | Gorski Jeffrey G SVP & Chief Accounting Officer | Sold | $1.2m3.5k shares |
| 2026-02-04 | Chu Maggie SVP, CHRO | Sold | $673.3k2.1k shares |
| 2026-02-02 | Stafford Ryan K Executive VP, CLO & Corp Sec | Sold | $5.5m16.8k shares |
| 2026-02-02 | Nayar Deepak SVP & GM Electronics Business | Sold | $2.9m8.9k shares |
| 2026-02-02 | Kim Peter Sung-Jip SVP & GM Industrial Business | Sold | $1.8m5.5k shares |
| 2026-02-02 | Ruppel David SVP & GM Transportation Bus. | Sold | $480.2k1.5k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q1 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 2.3m $797.1m | Added +62.3k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.03% of their portfolio | 1.6m $531.8m | First filing |
| VANGUARD CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 1.1m $382.2m | First filing |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. 2.92% of their portfolio | 982.7k $333.5m | Added +2.2k |
| STATE STREET CORP 0.01% of their portfolio | 770.9k $261.6m | Added +10.4k |
| NEUBERGER BERMAN GROUP LLC 0.19% of their portfolio | 741.2k $251.5m | Reduced -102.9k |
| MAIRS & POWER INC 2.51% of their portfolio | 724.7k $245.9m | Reduced -54.2k |
| T. Rowe Price Investment Management, Inc. 0.14% of their portfolio | 596.9k $202.6m | Reduced -161.1k |
| DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio | 502.8k $170.6m | Reduced -13.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 490.4k $166.4m | Added +13.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.03% of their portfolio | 477.5k $162.0m | Added +26.1k |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC 0.51% of their portfolio | 457.2k $155.1m | Reduced -567.0k |
| MORGAN STANLEY 0.01% of their portfolio | 427.0k $144.9m | Added +810 |
| EARNEST PARTNERS LLC 0.52% of their portfolio | 368.5k $125.0m | Reduced -15.3k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.86% of their portfolio | 350.9k $119.1m | Added +55.2k |
| Impax Asset Management Group plc 0.82% of their portfolio | 345.7k $117.3m | Reduced -108.3k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 331.2k $112.4m | Added +8.3k |
| ALLIANCEBERNSTEIN L.P. 0.03% of their portfolio | 321.5k $81.3m | Added +289.9k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.34% of their portfolio | 304.6k $103.4m | New |
| Thrivent Financial for Lutherans 0.20% of their portfolio | 303.7k $103.1m | Added +4.8k |
| VICTORY CAPITAL MANAGEMENT INC 0.07% of their portfolio | 301.5k $102.3m | Reduced -70.9k |
| Channing Capital Management, LLC 2.56% of their portfolio | 294.4k $99.9m | Reduced -9.1k |
| Boston Trust Walden Corp 0.81% of their portfolio | 291.4k $98.9m | Added +37.1k |
| LORD, ABBETT & CO. LLC 0.31% of their portfolio | 280.0k $95.0m | Added +108.2k |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 279.5k $94.8m | Added +15.7k |
| AQR CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 267.2k $88.5m | Reduced -20.8k |
| Copeland Capital Management, LLC 1.99% of their portfolio | 263.4k $89.4m | Reduced -36.7k |
| PRINCIPAL FINANCIAL GROUP INC 0.05% of their portfolio | 257.2k $87.3m | Added +16.0k |
| AMERIPRISE FINANCIAL INC 0.02% of their portfolio | 255.7k $86.8m | Reduced -9.9k |
| SEGALL BRYANT & HAMILL, LLC 1.15% of their portfolio | 236.3k $80.2m | Reduced -43.7k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 229.2k $77.8m | Reduced -6.6k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 228.0k $77.4m | Added +2.2k |
| NORDEA INVESTMENT MANAGEMENT AB 0.07% of their portfolio | 222.8k $73.2m | Reduced -10.6k |
| JANUS HENDERSON GROUP PLC 0.04% of their portfolio | 218.6k $74.2m | Reduced -468 |
| ROYCE & ASSOCIATES LP 0.73% of their portfolio | 216.8k $73.6m | Reduced -15.4k |
| ARIEL INVESTMENTS, LLC 0.82% of their portfolio | 215.4k $73.1m | Reduced -6.1k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 206.3k $66.1m | Reduced -6.6k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 193.0k $65.5m | Added +3.3k |
| PALISADE CAPITAL MANAGEMENT, LP 1.92% of their portfolio | 169.5k $57.5m | Added +7.3k |
| Boston Partners 0.06% of their portfolio | 168.1k $57.1m | Added +34.8k |
| RAYMOND JAMES FINANCIAL INC 0.02% of their portfolio | 155.5k $50.7m | Reduced -8.6k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 154.6k $52.5m | First filing |
| Analog Century Management LP 2.50% of their portfolio | 154.0k $52.3m | New |
| Southpoint Capital Advisors LP 1.05% of their portfolio | 150.0k $50.9m | New |
| Gotham Asset Management, LLC 0.15% of their portfolio | 144.6k $49.1m | Reduced -5.4k |
| Invesco Ltd. 0.00% of their portfolio | 142.3k $48.3m | Added +26.3k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.07% of their portfolio | 142.2k $48.3m | Added +1.9k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 138.3k $46.9m | Added +7.0k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 137.0k $46.5m | Added +315 |
| ACK Asset Management LLC 5.72% of their portfolio | 135.0k $45.8m | New |
| SEI INVESTMENTS CO 0.04% of their portfolio | 133.0k $45.1m | Added +8.9k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.02% of their portfolio | 132.9k $45.1m | Reduced -13.2k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.03% of their portfolio | 123.4k $39.5m | Reduced -48.3k |
| Harvey Partners, LLC 3.35% of their portfolio | 121.5k $41.2m | Added +4.0k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 112.8k $38.3m | Added +110.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 109.0k $37.0m | Added +12.6k |
| ProShare Advisors LLC 0.05% of their portfolio | 107.0k $36.3m | Added +80.1k |
| FEDERATED HERMES, INC. 0.06% of their portfolio | 103.2k $35.0m | Reduced -3.0k |
| Nuveen, LLC 0.01% of their portfolio | 101.8k $34.6m | Added +2.3k |
| WESTWOOD HOLDINGS GROUP INC 0.25% of their portfolio | 101.3k $34.4m | Reduced -10.1k |
| Bragg Financial Advisors, Inc 1.07% of their portfolio | 100.0k $34.0m | Added +396 |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 97.7k $33.1m | Added +9.3k |
| Aristotle Capital Boston, LLC 1.83% of their portfolio | 87.0k $29.5m | Reduced -12.9k |
| CRAWFORD INVESTMENT COUNSEL INC 0.48% of their portfolio | 82.8k $28.1m | Reduced -3.7k |
| Giverny Capital Inc. 1.00% of their portfolio | 80.7k $27.4m | Reduced -866 |
| UBS Group AG 0.00% of their portfolio | 80.7k $27.4m | Reduced -26.7k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.11% of their portfolio | 80.6k $27.4m | Reduced -1.5k |
| Vulcan Value Partners, LLC 0.70% of their portfolio | 78.1k $26.5m | Reduced -114.1k |
| JUPITER ASSET MANAGEMENT LTD 0.13% of their portfolio | 72.9k $24.7m | Reduced -8.3k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.72% of their portfolio | 71.8k $24.4m | Added +9.5k |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.09% of their portfolio | 68.5k $23.3m | Reduced -7.9k |
| MetLife Investment Management, LLC 0.12% of their portfolio | 67.2k $22.8m | Reduced -6.1k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 67.0k $22.8m | Added +1.4k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 64.9k $22.0m | Added +22.3k |
| JANE STREET GROUP, LLC 0.02% of their portfolio | 63.3k $21.5m | Added +62.4k |
| Quantinno Capital Management LP 0.04% of their portfolio | 63.2k $21.5m | Reduced -2.6k |
| MARSHALL WACE, LLP 0.02% of their portfolio | 60.7k $20.6m | Added +37.6k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 60.7k $20.6m | Added +10.9k |
| Polar Capital Holdings Plc 0.09% of their portfolio | 58.8k $19.9m | Added +1.7k |
| BROWN ADVISORY INC 0.03% of their portfolio | 58.2k $19.7m | Added +11.4k |
| Grandeur Peak Global Advisors, LLC 4.54% of their portfolio | 57.1k $19.4m | Reduced -36.6k |
| Tributary Capital Management, LLC 1.86% of their portfolio | 56.6k $19.2m | Reduced -1.8k |
| Summit Creek Advisors LLC 3.69% of their portfolio | 53.0k $18.0m | Reduced -17.7k |
| FIRST NATIONAL BANK OF OMAHA 0.55% of their portfolio | 52.9k $18.0m | Reduced -8.3k |
| Swiss National Bank 0.01% of their portfolio | 49.2k $16.7m | Added +360 |
| California Public Employees Retirement System 0.01% of their portfolio | 49.1k $16.7m | Added +6.2k |
| ExodusPoint Capital Management, LP 0.16% of their portfolio | 48.4k $16.4m | Added +42.8k |
| MIROVA 0.65% of their portfolio | 47.4k $16.1m | Added +25.7k |
| AXIOM INVESTORS LLC /DE 0.18% of their portfolio | 46.8k $15.9m | New |
| ALPS ADVISORS INC 0.07% of their portfolio | 46.0k $15.6m | Reduced -2.1k |
| NFJ INVESTMENT GROUP, LLC 0.57% of their portfolio | 44.3k $15.0m | Reduced -2.0k |
| Treasurer of the State of North Carolina 0.04% of their portfolio | 40.0k $13.6m | Added +3.1k |
| Hudson Bay Capital Management LP 0.08% of their portfolio | 39.3k $13.3m | Added +8.5k |
| Ceredex Value Advisors LLC 0.40% of their portfolio | 37.6k $12.8m | Reduced -23.9k |
| Allspring Global Investments Holdings, LLC 0.02% of their portfolio | 36.9k $12.7m | Reduced -15.2k |
| FMR LLC 0.00% of their portfolio | 35.8k $12.2m | Added +4.9k |
| Dorsey & Whitney Trust CO LLC 0.67% of their portfolio | 35.8k $12.2m | Reduced -3.3k |
| BLI - Banque de Luxembourg Investments 0.26% of their portfolio | 34.5k $8.7m | Unchanged |
| GAMCO INVESTORS, INC. ET AL 0.11% of their portfolio | 34.2k $11.6m | Reduced -800 |
| STATE OF WISCONSIN INVESTMENT BOARD 0.03% of their portfolio | 33.8k $11.5m | Reduced -3.2k |