AMPHENOL CORP-CL A (APH) Institutional Shareholders
AMPHENOL CORP-CL A (APH) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $137.51B in APH holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of APH tracked by InsiderSet, reporting ownership valued at approximately $12.88B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $16.39B, representing an estimated gain of +27.19% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 45% of the total disclosed APH value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Fmr Llc, and several other long-term asset managers with concentrated positions in AMPHENOL CORP-CL A (APH).
This page ranks the largest institutional APH shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
2,196
Total Reported Value
$137.51B
Largest Holder
Blackrock, Inc.
Largest Position
$12.88B
Insider Transactions (90d)
8
Latest Filing Quarter
Q2 2026
New Institutional Positions
82
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.23% | 101,966,066 | $12,883,412,435 | $16,385,946,806 | +$3,502,534,371 | +27.19% | |
| Vanguard Capital Management Llc | 0.25% | 79,875,456 | $10,092,263,866 | $12,835,985,779 | +$2,743,721,913 | +27.19% | |
| Fmr Llc | 0.53% | 79,477,521 | $10,041,984,781 | $12,772,037,625 | +$2,730,052,844 | +27.19% | |
| State Street Corp | 0.25% | 57,396,418 | $7,266,090,298 | $9,223,604,373 | +$1,957,514,075 | +26.94% | |
| Vanguard Portfolio Management Llc | 0.24% | 35,850,171 | $4,529,669,105 | $5,761,122,480 | +$1,231,453,375 | +27.19% | |
| Capital International Investors | 1.05% | 35,333,842 | $4,463,635,126 | $5,678,148,409 | +$1,214,513,283 | +27.21% | |
| Geode Capital Management, Llc | 0.25% | 31,295,967 | $3,947,761,324 | $5,029,261,897 | +$1,081,500,573 | +27.40% | |
| Capital Research Global Investors | 0.52% | 26,630,629 | $3,364,162,320 | $4,279,542,080 | +$915,379,760 | +27.21% | |
| Bank Of America Corp | 0.19% | 20,675,686 | $2,612,372,879 | $3,322,582,740 | +$710,209,861 | +27.19% | |
| Morgan Stanley | 0.13% | 17,512,450 | $2,212,698,455 | $2,814,250,715 | +$601,552,260 | +27.19% | |
| Bank Of New York Mellon Corp | 0.38% | 16,312,088 | $2,061,032,233 | $2,621,352,542 | +$560,320,309 | +27.19% | |
| Massachusetts Financial Services Co | 0.61% | 10,522,112 | $1,932,479,193 | $1,690,903,398 | -$241,575,795 | -12.50% | |
| Wellington Management Group Llp | 0.35% | 15,001,671 | $1,895,461,131 | $2,410,768,530 | +$515,307,399 | +27.19% | |
| Northern Trust Corp | 0.22% | 13,469,540 | $1,701,876,380 | $2,164,555,078 | +$462,678,698 | +27.19% | |
| Nuveen, Llc | 0.45% | 13,122,461 | $1,658,022,924 | $2,108,779,483 | +$450,756,559 | +27.19% | |
| Jennison Associates Llc | 0.98% | 9,223,778 | $1,626,336,465 | $1,482,261,125 | -$144,075,340 | -8.86% | |
| Arrowstreet Capital, Limited Partnership | 0.81% | 11,884,529 | $1,501,610,239 | $1,909,843,810 | +$408,233,571 | +27.19% | |
| Invesco Ltd. | 0.23% | 11,777,152 | $1,488,043,109 | $1,892,588,326 | +$404,545,217 | +27.19% | |
| Goldman Sachs Group Inc | 0.19% | 11,406,674 | $1,441,233,273 | $1,833,052,512 | +$391,819,239 | +27.19% | |
| Royal Bank Of Canada | 0.23% | 9,768,089 | $1,234,197,000 | $1,569,731,902 | +$335,534,902 | +27.19% | |
| Janus Henderson Group Plc | 0.59% | 9,458,488 | $1,195,087,777 | $1,519,979,022 | +$324,891,245 | +27.19% | |
| Franklin Resources Inc | 0.29% | 9,306,837 | $1,175,918,815 | $1,495,608,706 | +$319,689,891 | +27.19% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.24% | 9,287,216 | $1,173,439,741 | $1,492,455,611 | +$319,015,870 | +27.19% | |
| Legal & General Group Plc | 0.24% | 8,114,004 | $1,025,204,413 | $1,303,920,443 | +$278,716,030 | +27.19% | |
| Charles Schwab Investment Management Inc | 0.14% | 7,390,201 | $933,751,896 | $1,187,605,301 | +$253,853,405 | +27.19% | |
| Envestnet Asset Management Inc | 0.21% | 5,108,142 | $900,665,928 | $820,878,419 | -$79,787,509 | -8.86% | |
| Vanguard Fiduciary Trust Co | 0.23% | 7,090,111 | $895,835,525 | $1,139,380,838 | +$243,545,313 | +27.19% | |
| Wells Fargo & Company/Mn | 0.18% | 7,067,726 | $893,007,248 | $1,135,783,568 | +$242,776,320 | +27.19% | |
| Egerton Capital UK | John Armitage | 8.29% | 4,866,688 | $858,094,428 | $782,076,762 | -$76,017,666 | -8.86% |
| Swedbank Ab | 0.73% | 4,784,087 | $843,530,219 | $768,802,781 | -$74,727,438 | -8.86% | |
| Victory Capital Management Inc | 0.52% | 6,442,036 | $813,956,925 | $1,035,235,185 | +$221,278,260 | +27.19% | |
| Deutsche Bank Ag\ | 0.27% | 6,405,947 | $809,391,402 | $1,029,435,683 | +$220,044,281 | +27.19% | |
| Amundi | 0.22% | 6,381,320 | $806,279,793 | $1,025,478,124 | +$219,198,331 | +27.19% | |
| Ubs Group Ag | 0.14% | 6,303,318 | $796,424,229 | $1,012,943,203 | +$216,518,974 | +27.19% | |
| Neuberger Berman Group Llc | 0.57% | 5,906,177 | $746,237,493 | $949,122,644 | +$202,885,151 | +27.19% | |
| Sumitomo Mitsui Trust Group, Inc. | 0.42% | 4,139,732 | $729,917,546 | $665,254,932 | -$64,662,614 | -8.86% | |
| Flossbach Von Storch Se | 3.28% | 5,568,649 | $703,598,801 | $894,881,894 | +$191,283,093 | +27.19% | |
| Aqr Capital Management Llc | 0.32% | 5,649,669 | $697,112,610 | $907,901,808 | +$210,789,198 | +30.24% | |
| American Century Companies Inc | 0.35% | 5,307,856 | $670,647,606 | $852,972,459 | +$182,324,853 | +27.19% | |
| Barclays Plc | 0.23% | 5,027,734 | $635,254,193 | $807,956,854 | +$172,702,661 | +27.19% | |
| Voya Investment Management Llc | 0.62% | 4,701,866 | $594,080,770 | $755,589,866 | +$161,509,096 | +27.19% | |
| Alkeon Capital Management Llc | 2.64% | 4,617,948 | $583,477,730 | $742,104,244 | +$158,626,514 | +27.19% | |
| Edgewood Management Llc | 3.75% | 4,604,449 | $581,772,131 | $739,934,954 | +$158,162,823 | +27.19% | |
| Rathbones Group Plc | 2.06% | 3,170,818 | $559,078,629 | $509,550,453 | -$49,528,176 | -8.86% | |
| Alliancebernstein L.P. | 0.18% | 4,074,952 | $550,689,013 | $654,844,786 | +$104,155,773 | +18.91% | |
| Dimensional Fund Advisors Lp | 0.11% | 4,327,082 | $546,462,884 | $695,362,077 | +$148,899,193 | +27.25% | |
| Axiom Investors Llc | 6.00% | 4,267,387 | $539,184,347 | $685,769,091 | +$146,584,744 | +27.19% | |
| Mawer Investment Management Ltd. | 3.26% | 3,986,761 | $503,727,252 | $640,672,493 | +$136,945,241 | +27.19% | |
| Alecta Tjanstepension Omsesidigt | 2.03% | 2,732,400 | $481,804,092 | $439,096,680 | -$42,707,412 | -8.86% | |
| Stifel Financial Corp | 0.43% | 3,707,682 | $468,470,378 | $595,824,497 | +$127,354,119 | +27.19% |
Frequently asked questions about APH
Who owns the most APH stock?
The largest holders of APH are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for AMPHENOL CORP-CL A (APH).
Is APH widely held by superinvestors?
Many widely followed stocks like APH appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly APH is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.