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Super Investors / MASSACHUSETTS FINANCIAL SERVICES CO /MA/
MF

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$315B
Positions
1005
Quarter ended
June 30, 2026
Filed
August 03, 2026

Reported portfolio value by quarter (53 quarters reported)

$365B $148B
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$148B in Q2 2013 → $315B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Nvidia Corporation 4.3% Trimmed 4.2% 62,506,436 $13.7B
Alphabet Inc 3.3% Added 23% 28,694,648 $10.5B
Apple Inc 2.8% Added 0.2% 30,364,165 $8.93B
Amazon Com Inc 2.8% Added 24% 32,066,835 $8.85B
Microsoft Corp 2.8% Trimmed 20% 20,441,967 $8.76B
Broadcom Inc 1.7% Added 35% 12,084,090 $5.46B
TS Taiwan Semiconductor Manufac 1.5% Trimmed 1.7% 9,510,209 $4.73B
Kla Corp 1.4% Added 794% 14,668,801 $4.47B
Jpmorgan Chase & Co 1.3% Trimmed 16% 12,270,986 $4.03B
Linde PLC 1.0% Added 3.5% 4,922,872 $3.25B
Ubs Group Ag 1.0% Trimmed 4.0% 62,927,553 $3.2B
The Cigna Group 0.9% Trimmed 9.9% 10,443,691 $2.9B
Mastercard Incorporated 0.9% Trimmed 2.6% 5,375,808 $2.82B
Johnson & Johnson 0.9% Trimmed 22% 10,539,098 $2.7B
Medtronic PLC 0.8% Trimmed 7.3% 19,872,600 $2.61B
Aon PLC 0.8% Trimmed 8.9% 7,615,397 $2.58B
Visa Inc 0.8% Trimmed 10% 3,743,063 $2.54B
Waters Corp 0.8% Trimmed 0.1% 4,625,035 $2.53B
ST Seagate Technology Hldngs Pl 0.8% Added 1.0% 2,560,276 $2.51B
BD Becton Dickinson & Co 0.8% Trimmed 4.9% 8,650,967 $2.48B
FN Franco Nev Corp 0.8% Trimmed 0.4% 11,045,957 $2.37B
Thermo Fisher Scientific Inc 0.7% Trimmed 1.6% 2,965,714 $2.28B
Willis Towers Watson PLC Ltd 0.7% Trimmed 6.4% 5,491,383 $2.26B
Rtx Corporation 0.7% Trimmed 17% 11,737,526 $2.24B
EM Exxon Mobil Corp 0.7% Trimmed 11% 15,993,858 $2.19B
Analog Devices Inc 0.7% Trimmed 13% 5,399,929 $2.15B
SC Schwab Charles Corp 0.7% Trimmed 8.0% 13,356,306 $2.13B
Eaton Corp PLC 0.7% Added 4.1% 4,880,412 $2.12B
Meta Platforms Inc 0.7% Trimmed 18% 3,600,708 $2.07B
Chubb Limited 0.6% Trimmed 9.6% 5,887,366 $2.03B
Amphenol Corp 0.6% Trimmed 25% 10,522,112 $1.93B
Agnico Eagle Mines Ltd 0.6% Added 0.5% 11,922,732 $1.92B
Morgan Stanley 0.6% Trimmed 22% 9,212,711 $1.92B
Caterpillar Inc 0.6% Added 10% 1,748,257 $1.88B
Conocophillips 0.6% Trimmed 11% 17,973,897 $1.88B
Mckesson Corp 0.6% Trimmed 16% 2,446,386 $1.86B
Ge Vernova Inc 0.6% Trimmed 4.8% 1,551,035 $1.84B
Nasdaq Inc 0.6% Trimmed 20% 23,259,539 $1.83B
Nxp Semiconductors N V 0.6% Trimmed 15% 6,458,702 $1.82B
UP Union Pac Corp 0.6% Trimmed 11% 6,272,629 $1.74B
Arista Networks Inc 0.5% Added 35% 9,725,196 $1.71B
PG&E Corp 0.5% Trimmed 7.2% 101,483,416 $1.71B
Progressive Corp 0.5% Trimmed 37% 7,663,770 $1.67B
Humana Inc 0.5% Trimmed 20% 3,578,245 $1.66B
DE Duke Energy Corp New 0.5% Trimmed 11% 12,742,489 $1.63B
Ryanair Holdings PLC 0.5% Trimmed 0.2% 24,062,089 $1.59B
Micron Technology Inc 0.5% Added 2109% 1,356,814 $1.58B
PM Philip Morris Intl Inc 0.5% Trimmed 0.7% 8,573,094 $1.57B
Prologis Inc. 0.5% Trimmed 20% 11,217,207 $1.54B
American Express Co 0.5% Trimmed 12% 4,467,904 $1.54B
Citigroup Inc 0.5% Trimmed 18% 10,945,923 $1.53B
TD Toronto Dominion Bk Ont 0.5% Trimmed 22% 11,159,532 $1.51B
Boston Scientific Corp 0.5% Added 126% 24,859,191 $1.5B
PF Pnc Finl Svcs Group Inc 0.5% Trimmed 20% 6,019,533 $1.49B
Crh PLC 0.5% Added 0.4% 13,557,749 $1.49B
Transunion 0.5% Trimmed 19% 10,667,983 $1.48B
General Dynamics Corp 0.5% Trimmed 27% 4,140,985 $1.48B
Boeing Co 0.5% Trimmed 21% 6,890,252 $1.48B
HI Honeywell Intl Inc 0.4% New 5,068,155 $1.41B
Travelers Companies Inc 0.4% Trimmed 14% 4,241,289 $1.4B

Showing top 60 of 1005 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 03, 2026

Company Action Shares changed Value of change % of portfolio
Kla Corp Added +13,027,166 +$3.97B 1.4%
HI Honeywell Intl Inc Exited −8,707,049 −$2.52B
Microsoft Corp Trimmed −5,032,014 −$2.16B 2.8%
Alphabet Inc Added +5,281,416 +$1.94B 3.3%
Amazon Com Inc Added +6,114,335 +$1.69B 2.8%
Micron Technology Inc Added +1,295,401 +$1.51B 0.5%
HI Honeywell Intl Inc New +5,068,155 +$1.41B 0.4%
Broadcom Inc Added +3,103,168 +$1.4B 1.7%
HA Honeywell Aerospace Inc New +5,005,241 +$1.38B 0.4%
CN Canadian Natl Ry Co Trimmed −2,333,392 −$1.29B 0.2%

Showing the 10 largest of 1072 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 14, 2026

Company Action Shares changed Value of change % of portfolio
Totalenergies Se Trimmed −39,997,642 −$3.68B
CN Canadian Natl Ry Co Trimmed −6,834,049 −$1.92B 0.4%
QN Qiagen Nv Exited −24,205,881 −$1.09B
Waters Corp Added +2,005,403 +$892M 0.7%
Apple Inc Added +3,420,976 +$886M 2.6%
Johnson & Johnson Trimmed −2,954,264 −$729M 1.1%
Aptiv PLC Trimmed −8,701,056 −$682M
Microsoft Corp Trimmed −1,597,341 −$669M 3.6%
Exelon Corp Trimmed −13,125,776 −$652M
CN Canadian Nat Res Ltd Med Ter Trimmed −9,236,479 −$627M 0.1%

Showing the 10 largest of 1004 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 22, 2026

Company Action Shares changed Value of change % of portfolio
Totalenergies Se New +40,380,511 +$2.64B 0.9%
Meta Platforms Inc Trimmed −2,849,436 −$1.88B 1.0%
TS Taiwan Semiconductor Mfg Ltd Trimmed −5,612,181 −$1.71B 1.0%
Microsoft Corp Trimmed −3,257,332 −$1.58B 4.2%
Nvidia Corporation Trimmed −4,567,179 −$852M 4.0%
MI Mondelez Intl Inc Trimmed −12,814,080 −$690M
Eaton Corp PLC Trimmed −1,786,415 −$569M 0.6%
CN Comcast Corp New Exited −16,957,412 −$533M
ST Seagate Technology Hldngs Pl Added +1,883,769 +$519M 0.2%
Netflix Inc Added +5,468,262 +$513M 0.2%

Showing the 10 largest of 954 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 29, 2025

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Added +14,358,048 +$2.68B 4.1%
Visa Inc Trimmed −3,006,717 −$1.03B 0.6%
Meta Platforms Inc Trimmed −1,315,324 −$966M 1.7%
Apple Inc Added +3,261,336 +$830M 2.2%
Caterpillar Inc Added +1,736,631 +$829M 0.3%
Broadcom Inc Added +2,503,304 +$826M 0.9%
Arista Networks Inc Added +5,525,828 +$805M 0.3%
Humana Inc Added +2,553,509 +$664M 0.3%
Linde PLC Trimmed −1,381,604 −$656M 0.8%
Intuitive Surgical Inc Exited −1,146,204 −$623M

Showing the 10 largest of 943 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 08, 2025

Company Action Shares changed Value of change % of portfolio
Alphabet Inc Trimmed −5,941,337 −$1.05B 1.5%
Visa Inc Trimmed −2,669,504 −$948M 1.0%
Broadcom Inc Added +3,224,739 +$889M 0.5%
OA Oreilly Automotive Inc Added +8,568,904 +$772M 0.3%
Mastercard Incorporated Added +1,299,977 +$731M 1.1%
Nasdaq Inc Added +6,840,735 +$612M 0.8%
Salesforce Inc Trimmed −2,121,212 −$578M 0.4%
Canadian Pacific Kansas City Trimmed −6,498,588 −$515M 0.2%
Eli Lilly & Co Trimmed −617,976 −$482M 0.1%
WF Wells Fargo Co New Added +5,894,747 +$472M 0.4%

Showing the 10 largest of 940 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 02, 2025

Company Action Shares changed Value of change % of portfolio
Tesla Inc Trimmed −5,326,135 −$1.38B
QN Qiagen Nv Exited −25,319,332 −$1.13B
QN Qiagen Nv New +25,301,347 +$1.02B 0.3%
Jpmorgan Chase & Co. Trimmed −3,634,020 −$891M 1.5%
Nvidia Corporation Trimmed −7,338,656 −$795M 2.1%
Alphabet Inc Trimmed −5,111,511 −$790M 1.7%
Aon PLC Trimmed −1,783,997 −$712M 1.3%
Microsoft Corp Trimmed −1,612,542 −$605M 3.9%
WF Wells Fargo Co New Added +7,894,919 +$567M 0.3%
Intuit Trimmed −857,285 −$526M

Showing the 10 largest of 925 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 12, 2025

Company Action Shares changed Value of change % of portfolio
Tesla Inc Added +5,719,466 +$2.31B 0.7%
Microsoft Corp Trimmed −3,256,523 −$1.37B 4.3%
Alphabet Inc Trimmed −6,549,286 −$1.24B 2.2%
Blackrock Inc New +1,022,575 +$1.05B 0.3%
Blackrock Inc Exited −1,073,159 −$1.02B
Aptiv PLC Exited −12,772,022 −$920M
Visa Inc Trimmed −2,842,428 −$898M 1.3%
Aptiv PLC New +14,289,126 +$864M 0.3%
Lam Research Corp Exited −978,775 −$799M
CD Cadence Design System Inc Trimmed −2,633,224 −$791M 0.5%

Showing the 10 largest of 935 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 12, 2024

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Trimmed −15,840,696 −$1.92B 2.4%
FE Flutter Entmt PLC New +3,580,047 +$849M 0.3%
Ryanair Holdings PLC Added +17,810,361 +$805M 0.4%
TS Taiwan Semiconductor Mfg Ltd Trimmed −4,545,600 −$789M 1.0%
Te Connectivity Ltd Exited −4,803,097 −$723M
Te Connectivity PLC New +4,749,648 +$717M 0.2%
Microsoft Corp Trimmed −1,646,214 −$708M 4.6%
Jpmorgan Chase & Co. Trimmed −3,015,421 −$636M 1.6%
Eli Lilly & Co Trimmed −633,763 −$561M 0.5%
Intuitive Surgical Inc New +1,137,475 +$559M 0.2%

Showing the 10 largest of 906 changes.

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