AMPHENOL CORP (APH)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
Institutions report 1,168,903,986 shares against 1,232,983,457 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $17.9B | 101,252,038 | 0.27% | 8q | -0.7%-$125.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | $14.2B | 80,347,208 | 0.30% | 2q | +0.6%+$83.2M |
| FMR LLC | $12.4B | 70,569,005 | 0.54% | 31q | -11.2%-$1.6B |
| STATE STREET CORP | $10.5B | 59,492,948 | 0.31% | 31q | +3.7%+$370.2M |
| Capital International Investors | $7.6B | 43,036,258 | 1.57% | 26q | +21.8%+$1.4B |
| JPMORGAN CHASE & CO | $6.5B incl. $13.7M options CALL+PUT | 39,198,712 | 0.36% | 31q | -20.4%-$1.7B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $6.3B | 35,688,783 | 0.28% | 2q | HELD |
| PRICE T ROWE ASSOCIATES INC /MD/ | $5.6B | 32,011,336 | 0.56% | 31q | +22.2%+$1.0B |
| GEODE CAPITAL MANAGEMENT, LLC | $5.5B | 31,068,834 | 0.29% | 31q | -0.7%-$40.0M |
| Capital Research Global Investors | $5.2B | 29,487,845 | 0.73% | 31q | +10.7%+$503.7M |
| MORGAN STANLEY | $3.6B | 20,579,230 | 0.19% | 35q | +17.5%+$540.7M |
| NORGES BANK | $3.4B | 19,193,869 | 0.34% | 32q | -15.0%-$597.9M |
| WELLINGTON MANAGEMENT GROUP LLP | $2.9B | 16,579,919 | 0.50% | 31q | +10.5%+$278.3M |
| BANK OF AMERICA CORP /DE/ | $2.9B | 16,201,231 | 0.18% | 31q | -21.6%-$788.9M |
| Nuveen, LLC | $2.7B | 15,066,304 | 0.63% | 6q | +14.8%+$342.7M |
| Bank of New York Mellon Corp | $2.6B | 14,572,023 | 0.42% | 31q | -10.7%-$306.8M |
| NORTHERN TRUST CORP | $2.4B | 13,455,160 | 0.28% | 31q | HELD |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $2.1B | 11,886,105 | 0.93% | 14q | HELD |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $1.9B | 10,522,112 | 0.61% | 31q | -24.7%-$632.2M |
| GOLDMAN SACHS GROUP INC | $1.9B | 10,766,878 | 0.16% | 31q | -5.6%-$112.8M |
| ROYAL BANK OF CANADA | $1.8B incl. $52.9M options CALL | 9,773,658 | 0.26% | 31q | HELD |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $1.7B | 9,703,604 | 0.31% | 31q | +4.5%+$73.4M |
| FRANKLIN RESOURCES INC | $1.7B | 9,397,653 | 0.36% | 31q | +1.0%+$16.0M |
| JENNISON ASSOCIATES LLC | $1.6B | 9,223,778 | 0.98% | 4q | -9.9%-$178.9M |
| Jupiter Topco LLC | $1.6B | 9,077,181 | 0.65% | new | FIRST |
| Invesco Ltd. | $1.5B | 8,278,359 | 0.12% | 31q | -29.7%-$616.9M |
| Legal & General Group Plc | $1.4B | 7,829,563 | 0.29% | 31q | -3.5%-$50.2M |
| Amundi | $1.3B | 7,652,167 | 0.32% | 21q | +19.9%+$224.1M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.3B | 7,441,815 | 0.17% | 31q | +0.7%+$9.1M |
| VANGUARD FIDUCIARY TRUST CO | $1.2B | 7,068,807 | 0.27% | 2q | HELD |
| WELLS FARGO & COMPANY/MN | $1.2B incl. $6.4M options PUT | 7,019,730 | 0.20% | 31q | -0.7%-$8.5M |
| DEUTSCHE BANK AG\ | $1.2B | 6,911,994 | 0.35% | 34q | +7.9%+$89.2M |
| AMERICAN CENTURY COMPANIES INC | $1.2B | 6,877,221 | 0.54% | 25q | +29.6%+$276.7M |
| VICTORY CAPITAL MANAGEMENT INC | $1.1B | 6,221,795 | 0.62% | 31q | -3.4%-$38.8M |
| NEUBERGER BERMAN GROUP LLC | $1.1B incl. $15.8M options PUT | 5,989,750 | 0.71% | 31q | +1.4%+$15.0M |
| AMERIPRISE FINANCIAL INC | $1.0B | 5,851,925 | 0.21% | 31q | +203.6%+$691.9M |
| UBS Group AG | $1.0B incl. $4.5M options CALL+PUT | 5,709,685 | 0.13% | 31q | -9.4%-$105.1M |
| ALKEON CAPITAL MANAGEMENT LLC | $1.0B | 5,731,348 | 1.36% | 9q | +24.1%+$196.3M |
| FLOSSBACH VON STORCH SE | $997.4M | 5,656,967 | 4.51% | 22q | +1.6%+$15.6M |
| DIMENSIONAL FUND ADVISORS LP | $905.4M | 5,136,379 | 0.16% | 31q | +18.7%+$142.6M |
| SG Americas Securities, LLC | $902.4M | 5,117,713 | 0.50% | 31q | +23.0%+$169.0M |
| ENVESTNET ASSET MANAGEMENT INC | $900.7M | 5,108,142 | 0.21% | 31q | -2.4%-$21.8M |
| Egerton Capital (UK) LLP | $858.1M | 4,866,688 | 8.29% | 6q | +69.5%+$351.8M |
| Swedbank AB | $843.5M | 4,784,087 | 0.73% | 13q | +47.6%+$272.2M |
| BARCLAYS PLC | $803.9M incl. $50.3M options PUT | 4,273,766 | 0.15% | 31q | -15.0%-$141.8M |
| AQR CAPITAL MANAGEMENT LLC | $774.5M | 4,495,090 | 0.27% | 31q | -20.4%-$198.9M |
| ALLIANCEBERNSTEIN L.P. | $766.5M | 6,066,558 | 0.25% | 31q | +48.9%+$251.6M |
| Sumitomo Mitsui Trust Group, Inc. | $729.9M | 4,139,732 | 0.42% | 31q | HELD |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | $663.9M | 3,765,206 | 0.51% | 32q | +7.4%+$45.8M |
| STIFEL FINANCIAL CORP | $663.6M | 3,763,474 | 0.55% | 31q | +1.5%+$9.8M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $629.2M incl. $537.4M options CALL+PUT | 520,924 | 0.05% | 31q | +80.1%+$279.8M |
| Swiss National Bank | $611.4M | 3,467,500 | 0.32% | 31q | -3.5%-$22.0M |
| National Pension Service | $595.6M | 3,378,080 | 0.38% | 31q | +1.6%+$9.4M |
| NATIXIS ADVISORS, LLC | $577.8M | 3,276,904 | 0.65% | 31q | +7.5%+$40.2M |
| JANE STREET GROUP, LLC | $566.4M incl. $551.2M options CALL+PUT | 85,754 | 0.05% | 30q | -92.2%-$6.7B |
| RAYMOND JAMES FINANCIAL INC | $563.1M | 3,193,467 | 0.15% | 7q | +2.9%+$15.6M |
| Rathbones Group PLC | $559.1M | 3,170,818 | 2.06% | 31q | -48.6%-$528.2M |
| EDGEWOOD MANAGEMENT LLC | $554.0M | 3,141,974 | 5.71% | 3q | -31.8%-$257.9M |
| Mitsubishi UFJ Asset Management Co., Ltd. | $546.3M | 3,098,752 | 0.30% | 31q | +8.8%+$44.2M |
| PRINCIPAL FINANCIAL GROUP INC | $538.8M | 3,056,002 | 0.26% | 31q | +5.5%+$28.2M |
| LAZARD ASSET MANAGEMENT LLC | $537.3M | 3,047,437 | 0.81% | 33q | -4.1%-$23.2M |
| JONES FINANCIAL COMPANIES LLLP | $494.7M | 3,020,851 | 0.20% | 23q | +8.4%+$38.2M |
| Alecta Tjanstepension Omsesidigt | $481.8M | 2,732,400 | 2.03% | 31q | -13.9%-$78.0M |
| Vanguard Global Advisers, LLC | $467.8M | 2,653,180 | 0.22% | 2q | -1.4%-$6.6M |
| HSBC HOLDINGS PLC | $466.2M incl. $4.9M options PUT | 2,617,498 | 0.19% | 31q | +11.9%+$49.5M |
| California Public Employees Retirement System | $445.3M | 2,525,468 | 0.25% | 31q | -19.0%-$104.7M |
| BLAIR WILLIAM & CO/IL | $441.6M | 2,504,409 | 1.15% | 31q | -0.6%-$2.8M |
| Allianz Asset Management GmbH | $440.1M incl. $75.9M options CALL+PUT | 2,065,541 | 0.36% | 40q | -22.3%-$126.4M |
| Man Group plc | $437.3M | 2,480,397 | 0.70% | 31q | +28.8%+$97.8M |
| Capital World Investors | $431.3M | 2,446,080 | 0.05% | 2q | +57.4%+$157.3M |
| CANADA PENSION PLAN INVESTMENT BOARD | $423.9M | 2,404,150 | 0.23% | 31q | -11.3%-$54.2M |
| CITADEL ADVISORS LLC | $416.9M incl. $278.8M options CALL+PUT | 783,629 | 0.05% | 31q | -24.4%-$134.7M |
| Mawer Investment Management Ltd. | $415.8M | 2,358,285 | 2.83% | 31q | -40.8%-$287.1M |
| Alyeska Investment Group, L.P. | $408.7M | 2,318,178 | 1.05% | 3q | -18.3%-$91.5M |
| RHUMBLINE ADVISERS | $401.2M | 2,275,649 | 0.30% | 31q | -1.8%-$7.5M |
| VANGUARD ASSET MANAGEMENT, Ltd | $394.7M | 2,238,519 | 0.27% | 2q | +14.3%+$49.3M |
| MILLENNIUM MANAGEMENT LLC | $371.6M incl. $223.8M options CALL+PUT | 838,250 | 0.13% | 27q | -63.9%-$657.2M |
| Russell Investments Group, Ltd. | $362.0M | 2,063,491 | 0.32% | 31q | +28.6%+$80.5M |
| Winslow Capital Management, LLC | $360.5M | 2,044,422 | 1.24% | 8q | +53.9%+$126.3M |
| Local Pensions Partnership Investment Ltd | $344.2M | 1,951,700 | 7.22% | 7q | HELD |
| BANK OF MONTREAL /CAN/ | $339.8M | 1,926,941 | 0.11% | 31q | +3.4%+$11.1M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $331.6M | 1,880,421 | 0.31% | 31q | HELD |
| VOYA INVESTMENT MANAGEMENT LLC | $330.6M | 1,874,799 | 0.29% | 31q | -60.1%-$498.5M |
| FIRST TRUST ADVISORS LP | $324.9M | 1,842,807 | 0.19% | 31q | +9.1%+$27.0M |
| Bank Julius Baer & Co. Ltd, Zurich | $322.5M | 1,845,527 | 0.84% | 26q | +9.2%+$27.1M |
| USS Investment Management Ltd | $320.6M | 1,817,788 | 1.15% | 31q | +4.5%+$13.8M |
| Navera Investment Management Ltd. | $318.1M | 1,803,934 | 8.53% | 23q | +13.1%+$36.8M |
| NATIONAL BANK OF CANADA /FI/ | $312.7M | 1,773,625 | 0.22% | 19q | +56.3%+$112.7M |
| CITIGROUP INC | $310.5M | 1,760,816 | 0.10% | 31q | +15.4%+$41.5M |
| LPL Financial LLC | $302.5M incl. $317.4K options CALL | 1,713,817 | 0.07% | 31q | +14.0%+$37.2M |
| LORD, ABBETT & CO. LLC | $301.6M | 1,710,429 | 0.86% | 5q | +11.1%+$30.2M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $286.2M | 1,622,983 | 0.20% | 31q | +1.7%+$4.8M |
| BAMCO INC /NY/ | $281.8M | 1,598,059 | 0.42% | 29q | -3.7%-$10.9M |
| Maren Capital LLC | $273.6M | 1,551,888 | 12.68% | 11q | +5.0%+$13.1M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $270.7M | 1,535,059 | 0.81% | 2q | +42.5%+$80.7M |
| Qube Research & Technologies Ltd | $270.6M incl. $13.9M options CALL+PUT | 1,455,850 | 0.25% | 18q | -42.9%-$203.3M |
| CIBC Bancorp USA Inc. | $270.5M | 1,534,198 | 0.33% | 3q | -29.2%-$111.7M |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $268.6M | 1,523,241 | 0.99% | 31q | -21.8%-$75.0M |
| Cerity Partners LLC | $268.3M incl. $176.3K options CALL | 1,520,578 | 0.32% | 23q | +7.8%+$19.4M |
| Allspring Global Investments Holdings, LLC | $267.9M | 1,555,751 | 0.41% | 19q | -16.7%-$53.7M |
Showing the largest 100 of 2,361 reported holders. The count of 2,360 above leaves out 1 position whose reported value failed our price check; it is listed here as filed.
Q2 2026 in brief
In Q2 2026, 2,360 managers that file Form 13F reported holding Amphenol Corp (APH), $207.5B in all, or about 95% of the shares outstanding. 376 managers opened a position and 167 sold out completely, against 2,151 holders the quarter before. Largest holders: Blackrock, Inc., Vanguard Capital Management Llc and Fmr Llc. Largest new positions: Dsm Capital Partners Llc ($125.2M), E20 Capital Ltd ($124.2M) and Atreides Management, Lp ($112.9M).
Q2 2026 is the latest quarter whose 13F deadline has passed. A 13F shows long US stock positions at quarter end, filed up to 45 days later; an adviser and a sub-adviser can both report the same shares.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-06 | 2026-10-01 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-31 | NORWITT RICHARD ADAM | President & CEO | Sold | 686,104 | $111.0M ×2 |
| 2026-08-04 | Lampo Craig A | EVP& CFO | Sold | 193,200 | $32.3M |
| 2026-08-05 | Silverman David M | EVP, Human Resources | Sold | 120,000 | $20.9M |
| 2026-08-03 | D'AMICO LANCE E | EVP, Secretary & GenCounsel | Sold | 100,000 | $16.2M ×3 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 888 | $10.9B | 129,118,756 | 66 | 383 | 265 | 0.0% |
| Q2 2026 | 2,360 | $207.5B | 1,168,903,986 | 350 | 921 | 743 | 1.1% |
| Q1 2026 | 2,151 | $147.5B | 1,157,081,294 | 229 | 807 | 764 | 1.2% |
| Q4 2025 | 2,071 | $159.7B | 1,172,300,434 | 222 | 729 | 717 | 0.8% |
| Q3 2025 | 1,838 | $144.5B | 1,156,828,424 | 269 | 662 | 587 | 0.9% |
| Q2 2025 | 1,659 | $117.0B | 1,175,365,496 | 307 | 526 | 524 | 0.8% |
| Q1 2025 | 1,439 | $76.3B | 1,157,549,543 | 168 | 556 | 432 | 0.6% |
| Q4 2024 | 1,412 | $80.7B | 1,156,215,479 | 131 | 471 | 460 | 0.5% |
| Q3 2024 | 1,300 | $75.9B | 1,153,398,022 | 113 | 475 | 453 | 1.0% |
| Q2 2024 | 1,304 | $79.7B | 1,171,869,078 | 187 | 412 | 449 | 0.9% |
| Q1 2024 | 1,168 | $71.2B | 614,682,423 | 133 | 367 | 399 | 0.5% |
| Q4 2023 | 1,091 | $60.8B | 612,268,314 | 102 | 337 | 355 | 0.3% |
| Q3 2023 | 1,014 | $47.8B | 567,982,127 | 79 | 320 | 364 | 0.3% |
| Q2 2023 | 991 | $48.7B | 572,041,896 | 78 | 311 | 355 | 0.3% |
| Q1 2023 | 981 | $51.4B | 635,893,436 | 89 | 309 | 328 | 0.1% |
| Q4 2022 | 955 | $43.4B | 569,209,286 | 97 | 314 | 329 | 0.2% |
| Q3 2022 | 894 | $73.5B | 1,095,966,186 | 73 | 321 | 290 | 0.1% |
| Q2 2022 | 887 | $69.7B | 1,082,175,468 | 79 | 298 | 305 | 0.1% |
| Q1 2022 | 884 | $77.2B | 1,024,215,095 | 82 | 306 | 295 | 0.1% |
| Q4 2021 | 888 | $95.1B | 1,087,176,556 | 75 | 273 | 273 | 0.1% |
| Q3 2021 | 831 | $138.9B | 1,894,968,082 | 71 | 270 | 251 | 0.1% |
| Q2 2021 | 817 | $74.2B | 1,083,168,262 | 65 | 286 | 256 | 0.1% |
| Q1 2021 | 801 | $83.9B | 1,271,007,851 | 66 | 250 | 310 | 0.1% |
| Q4 2020 | 806 | $77.8B | 591,062,946 | 73 | 269 | 262 | 0.1% |
| Q3 2020 | 743 | $81.3B | 749,734,574 | 79 | 248 | 245 | 0.0% |
| Q2 2020 | 715 | $67.9B | 708,375,239 | 97 | 250 | 243 | 0.1% |
| Q1 2020 | 682 | $63.7B | 872,122,952 | 77 | 228 | 249 | 0.1% |
| Q4 2019 | 709 | $93.2B | 860,075,576 | 66 | 212 | 226 | 0.1% |
| Q3 2019 | 659 | $91.5B | 948,272,071 | 52 | 227 | 224 | 0.1% |
| Q2 2019 | 690 | $94.5B | 984,126,007 | 75 | 246 | 219 | 0.1% |
| Q1 2019 | 678 | $90.1B | 953,820,955 | 67 | 220 | 236 | 0.0% |
| Q4 2018 | 654 | $59.7B | 737,185,327 | 7 | 14 | 11 | 0.1% |