MASSACHUSETTS FINANCIAL SERVICES CO /MA/
Registered adviserRegulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
| Rosters | Regulatory AUM | Main clients |
|---|---|---|
| Apr 2026 to Oct 2026 | $514,051,177,297 | Registered funds and BDCs (85%) |
| Apr 2025 to Mar 2026 | $473,025,951,992 | Registered funds and BDCs (87%) |
| Apr 2024 to Mar 2025 | $454,325,314,664 | Registered funds and BDCs (86%) |
| May 2023 to Mar 2024 | $417,408,071,971 | Registered funds and BDCs (86%) |
| Apr 2023 | $417,408,071,971 | Registered funds and BDCs (86%) |
| Apr 2022 to Mar 2023 | $556,803,162,123 | Registered funds and BDCs (84%) |
Portfolio style
Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.
Closest benchmark: every 13F filer's combined book, active share 48.8%; sector active share 15.9% against the combined 13F book's sector weights.
Over time 26 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
999 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026Portfolio Trend
Sector Breakdown
As of Jun 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 26.1% | $76,881,168,914 |
| Financial Services | 16.8% | $49,481,853,628 |
| Industrials | 13.7% | $40,483,596,944 |
| Healthcare | 10.7% | $31,515,808,276 |
| Consumer Cyclical | 7.7% | $22,773,058,593 |
| Communication Services | 6.1% | $18,078,413,843 |
| Utilities | 4.9% | $14,452,292,895 |
| Basic Materials | 4.5% | $13,251,496,452 |
| Energy | 4.1% | $11,958,999,817 |
| Consumer Defensive | 3.0% | $8,875,621,714 |
| Real Estate | 2.4% | $7,093,425,623 |
| Unclassified | 0.0% | $53,475,979 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| BSX | Boston Scientific Corp | +13,862,619 | 24,859,191 | $1,060,990,269 | |
| KLAC | Kla Corp | +13,027,166 | 14,668,801 | $4,425,723,945 | |
| MDLN | Medline Inc. | +8,319,490 | 19,888,806 | $784,414,505 | |
| APTV | Aptiv PLC | +6,647,227 | 7,493,675 | $459,961,767 | |
| AMZN | Amazon Com Inc | +6,114,335 | 32,066,835 | $7,642,809,448 | |
| BAC | Bank Of America Corp /De/ | +5,353,770 | 15,187,077 | $865,359,644 | |
| GOOGL | Alphabet Inc. | +5,281,416 | 28,694,648 | $10,254,606,350 | |
| BKR | Baker Hughes Co | +4,984,914 | 7,201,568 | $399,687,022 | |
| AVGO | Broadcom Inc. | +3,103,168 | 12,084,090 | $4,564,764,994 | |
| DOC | Healthpeak Properties, Inc. | +2,883,382 | 4,230,551 | $90,533,790 | |
| SU | Suncor Energy Inc | +2,648,049 | 6,561,015 | $352,195,284 | |
| ANET | Arista Networks, Inc. | +2,497,275 | 9,725,196 | $1,652,116,292 | |
| GRAB | Grab Holdings Ltd | +2,486,750 | 17,687,253 | $66,680,940 | |
| HOOD | Robinhood Markets, Inc. | +2,163,118 | 3,150,026 | $315,884,605 | |
| CSGP | Costar Group, Inc. | +2,027,873 | 2,983,969 | $84,506,000 | |
| BZ | Kanzhun Ltd | +2,023,480 | 4,538,343 | $58,408,471 | |
| OVV | Ovintiv Inc. | +1,853,091 | 2,897,745 | $152,566,272 | |
| VIK | Viking Holdings Ltd | +1,795,810 | 9,691,495 | $1,014,408,779 | |
| AMD | Advanced Micro Devices Inc | +1,742,587 | 2,321,366 | $1,348,504,719 | |
| FCX | Freeport-Mcmoran Inc | +1,675,716 | 1,711,684 | $107,647,804 | |
| GFI | Gold Fields Ltd | +1,669,076 | 3,833,768 | $128,776,264 | |
| DXCM | Dexcom Inc | +1,626,169 | 3,560,621 | $239,807,820 | |
| MMED | MiniMed Group, Inc. | +1,456,278 | 8,334,738 | $124,604,330 | |
| AR | ANTERO RESOURCES Corp | +1,434,687 | 5,662,614 | $198,984,253 | |
| CCJ | Cameco Corp | +1,421,799 | 4,292,490 | $437,233,029 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| BBD | Bank Bradesco | −27,203,200 | 33,842,585 | $117,433,767 | |
| ABEV | Ambev S.A. | −15,754,667 | 10,715,332 | $33,646,142 | |
| PCG | PG&E Corp | −7,910,420 | 101,483,416 | $1,706,951,053 | |
| ACN | Accenture plc | −6,776,149 | 3,052,712 | $379,879,478 | |
| D | Dominion Energy, Inc | −6,590,991 | 20,030,451 | $1,367,879,497 | |
| NDAQ | Nasdaq, Inc. | −5,800,900 | 23,259,539 | $1,833,316,861 | |
| MSFT | Microsoft Corp | −5,032,014 | 20,441,967 | $7,625,262,525 | |
| KVUE | Kenvue Inc. | −5,028,398 | 44,715,586 | $854,514,844 | |
| PGR | Progressive Corp/Oh/ | −4,435,885 | 7,663,770 | $1,674,150,553 | |
| NWL | Newell Brands Inc. | −3,772,088 | 16,190,860 | $99,411,879 | |
| KKR | KKR & Co. Inc. | −3,733,544 | 10,616,489 | $974,381,358 | |
| HON | Honeywell International Inc | −3,638,894 | 5,068,155 | $1,134,759,900 | |
| FLEX | Flex Ltd. | −3,513,468 | 1,905,814 | $308,875,272 | |
| OTIS | Otis Worldwide Corp | −3,496,839 | 4,103,431 | $293,805,657 | |
| APH | Amphenol Corp /De/ | −3,442,515 | 10,522,112 | $3,710,517,574 | |
| CBRE | Cbre Group, Inc. | −3,236,926 | 414,470 | $55,824,960 | |
| CPNG | Coupang, Inc. | −3,155,627 | 4,464,989 | $77,556,855 | |
| TD | Toronto Dominion Bank | −3,059,561 | 11,159,532 | $1,355,101,967 | |
| GE | General Electric Co | −3,033,160 | 95,254 | $35,599,276 | |
| CELH | Celsius Holdings, Inc. | −2,934,339 | 132,450 | $3,878,135 | |
| INTC | Intel Corp | −2,905,320 | 544,582 | $76,039,981 | |
| JNJ | Johnson & Johnson | −2,895,204 | 10,539,098 | $2,676,614,716 | |
| PLD | Prologis, Inc. | −2,846,125 | 11,217,207 | $1,519,595,029 | |
| NVDA | Nvidia Corp | −2,769,122 | 62,506,436 | $12,506,912,773 | |
| HWM | Howmet Aerospace Inc. | −2,652,902 | 4,971,798 | $1,336,717,606 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarter| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| SPCX | Space Exploration Technologies Corp | 7,062,255 | $1,206,656,885 | |
| HONA | Honeywell Aerospace Inc. | 5,005,241 | $1,106,558,675 | |
| RVMD | Revolution Medicines, Inc. | 2,012,317 | $376,866,725 | |
| WMB | Williams Companies, Inc. | 4,695,435 | $349,058,635 | |
| HPE | Hewlett Packard Enterprise Co | 4,678,454 | $211,045,058 | |
| INIO | Innio N.V. | 4,958,842 | $196,122,198 | |
| IDXX | Idexx Laboratories Inc /De | 336,986 | $177,402,907 | |
| CRS | Carpenter Technology Corp | 258,363 | $159,368,631 | |
| BXDC | Blackstone Digital Infrastructure Trust Inc. | 6,818,266 | $147,479,091 | |
| SRRK | Scholar Rock Holding Corp | 2,607,348 | $143,404,140 | |
| NU | Nu Holdings Ltd. | 10,256,465 | $137,026,369 | |
| DOCN | DigitalOcean Holdings, Inc. | 815,400 | $128,042,258 | |
| FDXF | FedEx Freight Holding Company, Inc. | 771,397 | $116,480,947 | |
| GM | General Motors Co | 1,503,570 | $115,895,173 | |
| ALAB | Astera Labs, Inc. | 208,919 | $100,912,052 | |
| SMTC | Semtech Corp | 596,020 | $96,465,834 | |
| PINS | Pinterest, Inc. | 3,966,279 | $83,410,846 | |
| CBRS | Cerebras Systems Inc. | 371,665 | $82,137,965 | |
| ARXS | Arxis, Inc. | 1,536,450 | $70,891,800 | |
| SJM | J M SMUCKER Co | 612,070 | $68,857,874 | |
| POWI | Power Integrations Inc | 767,672 | $64,300,205 | |
| OGC | OceanaGold Corp | 2,449,540 | $61,434,461 | |
| NE | Noble Corp plc | 1,450,326 | $54,097,157 | |
| AADX | Applied Aerospace & Defense, Inc. | 2,342,565 | $53,363,629 | |
| CTAS | Cintas Corp | 313,093 | $53,250,855 | |
| No positions match the current search. | ||||
Sold Out
Positions the filer fully exited| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| CCL | Carnival Corp Ltd. | 5,916,649 | $153,122,873 | |
| RVTY | Revvity, Inc. | 1,065,520 | $93,350,206 | |
| HII | Huntington Ingalls Industries, Inc. | 241,938 | $91,912,243 | |
| GEHC | GE HealthCare Technologies Inc. | 1,260,998 | $89,757,836 | |
| GPK | Graphic Packaging Holding Co | 7,459,614 | $74,148,561 | |
| VFC | V F Corp | 4,103,674 | $69,721,418 | |
| ORCL | Oracle Corp | 438,254 | $64,471,544 | |
| PBR | Petrobras - Petroleo Brasileiro SA | 3,077,153 | $63,850,922 | |
| IBM | International Business Machines Corp | 260,190 | $63,067,453 | |
| SHO | Sunstone Hotel Investors, Inc. | 4,733,474 | $42,648,598 | |
| SUNB | Sunbelt Rentals Holdings, Inc. | 560,208 | $36,463,936 | |
| NJR | New Jersey Resources Corp | 655,430 | $35,996,215 | |
| MKC | Mccormick & Co Inc | 666,345 | $33,610,439 | |
| DEI | Douglas Emmett Inc | 2,791,942 | $26,300,090 | |
| OR | OR Royalties Inc. | 660,101 | $25,097,040 | |
| BELFB | Bel Fuse Inc /Nj | 123,498 | $24,450,134 | |
| CC | Chemours Co | 947,322 | $20,869,503 | |
| GENI | Genius Sports Ltd | 3,959,527 | $17,540,704 | |
| REZI | Resideo Technologies, Inc. | 508,083 | $17,127,482 | |
| VSNT | Versant Media Group, Inc. | 419,442 | $15,527,740 | |
| OGN | Organon & Co. | 1,689,210 | $10,118,367 | |
| FSLR | First Solar, Inc. | 36,105 | $7,122,071 | |
| EL | Estee Lauder Companies Inc | 79,195 | $5,683,824 | |
| TEM | Tempus AI, Inc. | 118,432 | $5,355,495 | |
| ABSI | Absci Corp | 1,719,992 | $5,159,976 | |
| No positions match the current search. | ||||
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| NVDA |
Nvidia Corp
Technology
|
Reduced | 62,506,436 | $12,506,912,773 | 4.24% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
Added | 28,694,648 | $10,254,606,350 | 3.48% | |
| AAPL |
Apple Inc.
Technology
|
Added | 30,364,165 | $8,786,174,781 | 2.98% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
Added | 32,066,835 | $7,642,809,448 | 2.59% | |
| MSFT |
Microsoft Corp
Technology
|
Reduced | 20,441,967 | $7,625,262,525 | 2.59% | |
| AVGO |
Broadcom Inc.
Technology
|
Added | 12,084,090 | $4,564,764,994 | 1.55% | |
| TSM |
Taiwan Semiconductor Manufacturing Co Ltd
Technology
|
Reduced | 9,510,209 | $4,541,790,507 | 1.54% | |
| KLAC |
Kla Corp
Technology
|
Added | 14,668,801 | $4,425,723,945 | 1.50% | |
| JPM |
Jpmorgan Chase & Co
Financial Services
|
Reduced | 12,270,986 | $4,016,661,844 | 1.36% | |
| APH |
Amphenol Corp /De/
Technology
|
Reduced | 10,522,112 | $3,710,517,574 | 1.26% | |
| UBS |
UBS Group AG
Financial Services
|
Reduced | 62,927,553 | $3,118,689,522 | 1.06% | |
| CI |
Cigna Group
Healthcare
|
Reduced | 10,443,691 | $2,879,116,732 | 0.98% | |
| MA |
Mastercard Inc
Financial Services
|
Reduced | 5,375,808 | $2,761,014,985 | 0.94% | |
| JNJ |
Johnson & Johnson
Healthcare
|
Reduced | 10,539,098 | $2,676,614,716 | 0.91% | |
| LIN |
Linde PLC
Basic Materials
|
Added | 4,922,872 | $2,554,675,191 | 0.87% | |
| AON |
Aon plc
Financial Services
|
Reduced | 7,615,397 | $2,525,951,027 | 0.86% | |
| STX |
Seagate Technology Holdings plc
Technology
|
Added | 2,560,276 | $2,470,666,340 | 0.84% | |
| FNV |
FRANCO NEVADA Corp
Basic Materials
|
Reduced | 11,045,957 | $2,302,419,274 | 0.78% | |
| RTX |
RTX Corp
Industrials
|
Reduced | 11,737,526 | $2,226,960,804 | 0.76% | |
| XOM |
ExxonMobil Holdings Corp
Energy
|
Reduced | 15,993,858 | $2,186,680,262 | 0.74% | |
| ADI |
Analog Devices Inc
Technology
|
Reduced | 5,399,929 | $2,144,689,796 | 0.73% | |
| ETN |
Eaton Corp plc
Industrials
|
Added | 4,880,412 | $2,079,641,157 | 0.71% | |
| META |
Meta Platforms, Inc.
Communication Services
|
Reduced | 3,600,708 | $2,028,242,806 | 0.69% | |
| CB |
Chubb Ltd
Financial Services
|
Reduced | 5,887,366 | $2,006,061,088 | 0.68% | |
| MS |
Morgan Stanley
Financial Services
|
Reduced | 9,212,711 | $1,925,825,104 | 0.65% | |
| COP |
Conocophillips
Energy
|
Reduced | 17,973,897 | $1,868,566,327 | 0.63% | |
| CAT |
Caterpillar Inc
Industrials
|
Added | 1,748,257 | $1,861,718,876 | 0.63% | |
| AEM |
Agnico Eagle Mines Ltd
Basic Materials
|
Added | 11,922,732 | $1,849,573,410 | 0.63% | |
| MCK |
Mckesson Corp
Healthcare
|
Reduced | 2,446,386 | $1,848,489,260 | 0.63% | |
| NDAQ |
Nasdaq, Inc.
Financial Services
|
Reduced | 23,259,539 | $1,833,316,861 | 0.62% | |
| GEV |
GE Vernova Inc.
Industrials
|
Reduced | 1,551,035 | $1,822,248,976 | 0.62% | |
| NXPI |
NXP Semiconductors N.V.
Technology
|
Reduced | 6,458,702 | $1,815,089,020 | 0.62% | |
| WAT |
Waters Corp /De/
Healthcare
|
Reduced | 4,625,035 | $1,734,573,121 | 0.59% | |
| PCG |
PG&E Corp
Utilities
|
Reduced | 101,483,416 | $1,706,951,053 | 0.58% | |
| UNP |
Union Pacific Corp
Industrials
|
Reduced | 6,272,629 | $1,706,155,088 | 0.58% | |
| PGR |
Progressive Corp/Oh/
Financial Services
|
Reduced | 7,663,770 | $1,674,150,553 | 0.57% | |
| ANET |
Arista Networks, Inc.
Technology
|
Added | 9,725,196 | $1,652,116,292 | 0.56% | |
| DUK |
Duke Energy CORP
Utilities
|
Reduced | 12,742,489 | $1,612,944,254 | 0.55% | |
| MU |
Micron Technology Inc
Technology
|
Added | 1,356,814 | $1,566,156,828 | 0.53% | |
| RYAAY |
Ryanair Holdings PLC
Industrials
|
Reduced | 24,062,089 | $1,558,020,260 | 0.53% | |
| MDT |
Medtronic plc
Healthcare
|
Reduced | 19,872,600 | $1,554,633,495 | 0.53% | |
| PM |
Philip Morris International Inc.
Consumer Defensive
|
Reduced | 8,573,094 | $1,550,958,432 | 0.53% | |
| C |
Citigroup Inc
Financial Services
|
Reduced | 10,945,923 | $1,531,991,379 | 0.52% | |
| PLD |
Prologis, Inc.
Real Estate
|
Reduced | 11,217,207 | $1,519,595,029 | 0.52% | |
| AXP |
American Express Co
Financial Services
|
Reduced | 4,467,904 | $1,511,268,526 | 0.51% | |
| BA |
Boeing Co
Industrials
|
Reduced | 6,890,252 | $1,491,532,848 | 0.51% | |
| TMO |
Thermo Fisher Scientific Inc.
Healthcare
|
Reduced | 2,965,714 | $1,486,890,367 | 0.50% | |
| PNC |
Pnc Financial Services Group, Inc.
Financial Services
|
Reduced | 6,019,533 | $1,482,129,411 | 0.50% | |
| GD |
General Dynamics Corp
Industrials
|
Reduced | 4,140,985 | $1,466,902,521 | 0.50% | |
| CRH |
Crh Public Ltd Co
Basic Materials
|
Added | 13,557,749 | $1,450,679,143 | 0.49% |
Showing the top 50 of 999 positions. Create a free account to see every position, past quarters, search, filters and CSV export.
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.