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 ($68.1m this quarter). Holder counts are more reliable. Shares outstanding: 25.4m as of 2026-07-24, 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 ≈ $453.66. Options: 6 managers hold calls ($15.6m notional), 9 hold puts ($100.3m).
Trends to Q2 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 |
| Q2 2026 | 609 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| 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 |
| Q2 2026 | 287 | 254 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $1.2m | $1.5m | 1.24 |
| Q4 2025 | $1.0m | $430.0k | 0.42 |
| Q1 2026 | $15.0m | $12.5m | 0.83 |
| Q2 2026 | $15.6m | $100.3m | 6.44 |
Biggest buyers
| JANE STREET GROUP, LLC | Added | +284.7k |
| Invesco Ltd. | Added | +251.6k |
| D1 Capital Partners L.P. | New | +224.2k |
| Avantyr Capital Partners, LP | New | +202.8k |
| BlackRock, Inc. | Added | +174.0k |
| Qube Research & Technologies Ltd | New | +154.3k |
| Holocene Advisors, LP | Added | +125.6k |
| Hill City Capital, LP | New | +120.0k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +92.9k |
| FMR LLC | Added | +92.9k |
Biggest sellers
| T. Rowe Price Investment Management, Inc. | Reduced | -498.5k |
| NEUBERGER BERMAN GROUP LLC | Reduced | -273.3k |
| AMERIPRISE FINANCIAL INC | Reduced | -194.6k |
| Analog Century Management LP | Sold out | -154.0k |
| Southpoint Capital Advisors LP | Sold out | -150.0k |
| Impax Asset Management Group plc | Reduced | -148.4k |
| MAIRS & POWER INC | Reduced | -122.6k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -114.3k |
| PALISADE CAPITAL MANAGEMENT, LP | Reduced | -100.1k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -88.1k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $5.3m11.7k shares |
| JANE STREET GROUP, LLC | Added | $3.2m7.0k shares |
| CITADEL ADVISORS LLC | Reduced | $2.6m5.7k shares |
| Squarepoint Ops LLC | New | $1.7m3.7k shares |
| IMC-Chicago, LLC | New | $1.6m3.5k shares |
| SIMPLEX TRADING, LLC | Added | $1.2m2.6k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $36.2m79.4k shares |
| Oribel Capital Management, LP | New | $26.9m59.1k shares |
| JANE STREET GROUP, LLC | Added | $17.1m37.6k shares |
| CITADEL ADVISORS LLC | Added | $10.4m22.8k shares |
| GROUP ONE TRADING LLC | New | $3.2m7.1k shares |
| Squarepoint Ops LLC | New | $2.9m6.3k shares |
| BOOTHBAY FUND MANAGEMENT, LLC | New | $2.7m6.0k shares |
| IMC-Chicago, LLC | New | $591.9k1.3k shares |
| SIMPLEX TRADING, LLC | New | $273.2k600 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 since 1 Apr 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 |
|---|---|---|---|---|---|
| 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 |
| Q2 2026 | 0 | — | 7 | $16.2m | $726.2k |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-06-18 | Gorski Jeffrey G SVP & Chief Accounting Officer | Sold | $670.2k1.4k shares |
| 2026-06-15 | HUNTER GORDON Director | Sold | $687.4k1.4k shares |
| 2026-06-11 | GRILLO ANTHONY Director | Sold | $1.4m3.0k shares |
| 2026-06-03 | HUNTER GORDON Director | Sold plan | $294.5k603 shares |
| 2026-06-02 | Kim Peter Sung-Jip SVP & GM Industrial Business | Sold | $4.9m10.2k shares |
| 2026-05-20 | Chu Maggie SVP, CHRO | Sold | $5.0m11.4k shares |
| 2026-05-18 | Nayar Deepak SVP & GM Electronics Business | Sold | $2.6m5.9k shares |
| 2026-05-18 | Ruppel David SVP & GM Transportation Bus. | Sold | $225.3k506 shares |
| 2026-04-30 | Chu Maggie SVP, CHRO | Sold plan | $111.9k282 shares |
| 2026-04-28 | Chu Maggie SVP, CHRO | Sold plan | $319.9k815 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, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.02% of their portfolio | 2.5m $1.1bn | Added +174.0k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.03% of their portfolio | 1.5m $684.9m | Reduced -63.0k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 1.1m $519.6m | Added +14.8k |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. 3.25% of their portfolio | 933.5k $425.1m | Reduced -49.2k |
| STATE STREET CORP 0.01% of their portfolio | 794.2k $361.6m | Added +23.3k |
| MAIRS & POWER INC 2.52% of their portfolio | 602.1k $274.2m | Reduced -122.6k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 583.3k $265.6m | Added +92.9k |
| MORGAN STANLEY 0.01% of their portfolio | 471.2k $214.6m | Added +44.2k |
| NEUBERGER BERMAN GROUP LLC 0.14% of their portfolio | 467.9k $213.0m | Reduced -273.3k |
| DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio | 445.1k $202.7m | Reduced -57.7k |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC 0.56% of their portfolio | 406.4k $185.1m | Reduced -50.7k |
| Invesco Ltd. 0.01% of their portfolio | 393.9k $179.4m | Added +251.6k |
| WELLINGTON MANAGEMENT GROUP LLP 0.03% of their portfolio | 363.2k $165.4m | Reduced -114.3k |
| EARNEST PARTNERS LLC 0.58% of their portfolio | 351.4k $160.0m | Reduced -17.1k |
| JANE STREET GROUP, LLC 0.10% of their portfolio | 348.0k $158.5m | Added +284.7k |
| LORD, ABBETT & CO. LLC 0.45% of their portfolio | 343.7k $156.5m | Added +63.7k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 1.03% of their portfolio | 343.5k $156.4m | Reduced -7.3k |
| ALLIANCEBERNSTEIN L.P. 0.04% of their portfolio | 337.6k $114.6m | Added +16.1k |
| Thrivent Financial for Lutherans 0.26% of their portfolio | 334.4k $152.3m | Added +30.8k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.44% of their portfolio | 321.7k $146.5m | Added +17.1k |
| NORGES BANK 0.01% of their portfolio | 317.2k $144.4m | Not comparable |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.02% of their portfolio | 316.7k $144.2m | Reduced -14.6k |
| Boston Trust Walden Corp 1.03% of their portfolio | 298.3k $135.8m | Added +6.9k |
| AMERICAN CENTURY COMPANIES INC 0.06% of their portfolio | 283.4k $129.0m | Added +3.9k |
| PRINCIPAL FINANCIAL GROUP INC 0.06% of their portfolio | 269.1k $122.5m | Added +11.9k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 253.2k $115.3m | Added +24.0k |
| Copeland Capital Management, LLC 2.35% of their portfolio | 251.3k $114.4m | Reduced -12.1k |
| VICTORY CAPITAL MANAGEMENT INC 0.06% of their portfolio | 238.7k $108.7m | Reduced -62.8k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 233.9k $106.5m | Added +5.9k |
| D1 Capital Partners L.P. 0.29% of their portfolio | 224.2k $102.1m | New |
| Channing Capital Management, LLC 2.18% of their portfolio | 208.1k $94.7m | Reduced -86.4k |
| Jupiter Topco LLC 0.04% of their portfolio | 207.7k $94.6m | First filing |
| AQR CAPITAL MANAGEMENT LLC 0.03% of their portfolio | 205.9k $93.8m | Reduced -61.3k |
| SEGALL BRYANT & HAMILL, LLC 1.10% of their portfolio | 204.0k $92.9m | Reduced -32.3k |
| Avantyr Capital Partners, LP 3.40% of their portfolio | 202.8k $92.3m | New |
| JPMORGAN CHASE & CO 0.01% of their portfolio | 200.9k $90.7m | Reduced -5.3k |
| Impax Asset Management Group plc 0.58% of their portfolio | 197.3k $89.8m | Reduced -148.4k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 189.6k $86.3m | Reduced -3.4k |
| NORDEA INVESTMENT MANAGEMENT AB 0.07% of their portfolio | 179.3k $81.8m | Reduced -43.5k |
| ARIEL INVESTMENTS, LLC 0.74% of their portfolio | 163.4k $74.4m | Reduced -52.1k |
| VANGUARD FIDUCIARY TRUST CO 0.02% of their portfolio | 160.1k $72.9m | Added +5.5k |
| Qube Research & Technologies Ltd 0.08% of their portfolio | 154.3k $70.3m | New |
| Gotham Asset Management, LLC 0.16% of their portfolio | 147.1k $67.0m | Added +2.6k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 145.7k $66.3m | Added +8.6k |
| RAYMOND JAMES FINANCIAL INC 0.02% of their portfolio | 143.0k $65.1m | Reduced -12.5k |
| ENVESTNET ASSET MANAGEMENT INC 0.02% of their portfolio | 140.6k $64.0m | Added +2.3k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.02% of their portfolio | 138.2k $62.9m | Added +5.2k |
| ROYCE & ASSOCIATES LP 0.50% of their portfolio | 135.0k $61.5m | Reduced -81.8k |
| Holocene Advisors, LP 0.14% of their portfolio | 132.1k $60.1m | Added +125.6k |
| FMR LLC 0.00% of their portfolio | 128.7k $58.6m | Added +92.9k |
| ACK Asset Management LLC 6.65% of their portfolio | 125.0k $56.9m | Reduced -10.0k |
| Hill City Capital, LP 1.28% of their portfolio | 120.0k $54.6m | New |
| FEDERATED HERMES, INC. 0.08% of their portfolio | 116.1k $52.9m | Added +12.9k |
| Boston Partners 0.05% of their portfolio | 115.7k $52.7m | Reduced -52.4k |
| Harvey Partners, LLC 3.55% of their portfolio | 112.5k $51.2m | Reduced -9.0k |
| Nuveen, LLC 0.01% of their portfolio | 111.9k $51.0m | Added +10.1k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.06% of their portfolio | 107.5k $48.9m | Reduced -34.7k |
| SEI INVESTMENTS CO 0.04% of their portfolio | 104.4k $47.6m | Reduced -28.5k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 99.3k $45.2m | Reduced -9.7k |
| T. Rowe Price Investment Management, Inc. 0.03% of their portfolio | 98.4k $44.8m | Reduced -498.5k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.03% of their portfolio | 94.8k $42.6m | Reduced -28.6k |
| CITADEL ADVISORS LLC 0.02% of their portfolio | 93.2k $42.5m | Added +89.5k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 92.5k $42.1m | Reduced -5.1k |
| MARSHALL WACE, LLP 0.04% of their portfolio | 91.8k $41.8m | Added +31.1k |
| ProShare Advisors LLC 0.06% of their portfolio | 84.5k $38.5m | Reduced -22.4k |
| Bragg Financial Advisors, Inc 1.00% of their portfolio | 82.2k $37.4m | Reduced -17.8k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.75% of their portfolio | 79.8k $36.3m | Added +8.0k |
| UBS Group AG 0.01% of their portfolio | 79.1k $36.0m | Reduced -1.6k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.10% of their portfolio | 78.0k $35.5m | Added +71.5k |
| Engineers Gate Manager LP 0.46% of their portfolio | 77.1k $35.1m | New |
| Giverny Capital Inc. 1.13% of their portfolio | 74.1k $33.8m | Reduced -6.6k |
| CRAWFORD INVESTMENT COUNSEL INC 0.55% of their portfolio | 72.0k $32.8m | Reduced -10.8k |
| Aristotle Capital Boston, LLC 2.20% of their portfolio | 71.9k $32.7m | Reduced -15.1k |
| WESTWOOD HOLDINGS GROUP INC 0.24% of their portfolio | 70.0k $31.9m | Reduced -31.3k |
| PALISADE CAPITAL MANAGEMENT, LP 1.38% of their portfolio | 69.4k $31.6m | Reduced -100.1k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 67.1k $30.6m | Added +89 |
| Russell Investments Group, Ltd. 0.03% of their portfolio | 66.5k $30.3m | Added +5.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 65.8k $30.0m | Added +893 |
| Quantinno Capital Management LP 0.04% of their portfolio | 64.4k $29.3m | Added +1.1k |
| GENDELL JEFFREY L 0.26% of their portfolio | 63.7k $29.0m | New |
| PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO 0.10% of their portfolio | 62.9k $28.7m | Reduced -5.6k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 61.1k $27.8m | Reduced -194.6k |
| E20 Capital Ltd 2.24% of their portfolio | 60.9k $27.7m | New |
| Oribel Capital Management, LP 2.24% of their portfolio | 59.1k $26.9m | New |
| Connor, Clark & Lunn Investment Management Ltd. 0.05% of their portfolio | 55.9k $25.4m | Added +51.3k |
| JUPITER ASSET MANAGEMENT LTD 0.12% of their portfolio | 54.2k $24.7m | Reduced -18.7k |
| California Public Employees Retirement System 0.01% of their portfolio | 54.1k $24.6m | Added +5.0k |
| Polar Capital Holdings Plc 0.07% of their portfolio | 52.4k $23.9m | Reduced -6.3k |
| MetLife Investment Management, LLC 0.11% of their portfolio | 52.3k $23.8m | Reduced -14.9k |
| BROWN ADVISORY INC 0.04% of their portfolio | 52.0k $23.7m | Reduced -6.1k |
| Zurich Insurance Group Ltd/FI 0.16% of their portfolio | 50.8k $23.1m | New |
| Baird Financial Group, Inc. 0.03% of their portfolio | 50.7k $23.1m | Added +42.1k |
| Swiss National Bank 0.01% of their portfolio | 50.5k $23.0m | Added +1.3k |
| TCW GROUP INC 0.15% of their portfolio | 48.8k $22.2m | New |
| PRUDENTIAL FINANCIAL INC 0.02% of their portfolio | 48.5k $22.1m | Added +18.1k |
| Tributary Capital Management, LLC 1.73% of their portfolio | 46.1k $21.0m | Reduced -10.4k |
| SAMLYN CAPITAL, LLC 0.33% of their portfolio | 43.9k $20.0m | New |
| Hudson Bay Capital Management LP 0.09% of their portfolio | 42.4k $19.3m | Added +3.2k |
| Grandeur Peak Global Advisors, LLC 4.41% of their portfolio | 41.9k $19.1m | Reduced -15.3k |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. 0.17% of their portfolio | 41.4k $18.8m | New |