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MFS Investment Management
The positions MFS Investment Management reported on its Form 13F for Q2 2026, the quarter ending 30 Jun 2026, filed on 3 Aug 2026. Every figure below is the filing’s own: US-listed long equity, valued at the quarter end, with the change measured against the same manager’s previous filing.
Reported book
$315bn
+$17.7bn on Q1 2026
Positions
1,005
6 new, 70 sold out
Top ten weight
23%
Spread across the book
Quarter
Q2 2026
Filed 3 Aug 2026
Read the Q2 2026 filing on sec.gov CIK 0000912938 · Long-only · MA
Opened this quarter
A new position is the clearest thing a filing says. Somebody argued for it recently, and it is the easiest question to be ready for.
- Honeywell Intl Inc$1.4bn · 0.4%
- Honeywell Aerospace Inc (HONA)$1.4bn · 0.4%
- Space Exploration Techn Corp$1.2bn · 0.4%
- Ascendis Pharma A/s (ASND)$500m · 0.2%
- Revolution Medicines Inc$377m · 0.1%
- Williams Cos Inc$354m · 0.1%
Sold out of this quarter
Exits are valued at what the position was worth in the previous filing, because by this one it is gone.
- Honeywell Intl Inc$2.5bn held before
- Aptiv PLC (APTV)$476m held before
- Ascendis Pharma A/s (ASND)$426m held before
- Masimo Corp$417m held before
- Carnival Corp (CCL)$153m held before
- Dupont de Nemours Inc (DD)$113m held before
- Revvity Inc (RVTY)$93m held before
- Huntington Ingalls Inds Inc$92m held before
- Ge Healthcare Technologies I$90m held before
- Graphic Packaging HLDG Co$74m held before
- V F Corp (VFC)$70m held before
- Oracle Corp$65m held before
- and 58 more.
Every reported position, Q2 2026
200 positions, sorted by weight · page 2 of 2
| Position | Weight ↓ | Value | Shares | Change on the quarter | Action |
|---|---|---|---|---|---|
Take-two Interactive Softwar COM · CUSIP 874054109 | 0.3% | $813m | 3,240,013 | -$52m -1,111,413 shares | Trimmed |
Medline Inc (MDLN) COM CL A · CUSIP 58507V107 | 0.2% | $787m | 19,888,806 | +$269m +8,319,490 shares | Added |
Canadian Natl Ry Co COM · CUSIP 136375102 | 0.2% | $784m | 1,417,278 | -$270m -2,333,392 shares | Trimmed |
Danaher Corp Del COM · CUSIP 235851102 | 0.2% | $762m | 3,878,641 | -$53m -287,128 shares | Trimmed |
Shopify Inc (SHOP) CL A SUB VTG SHS · CUSIP 82509L107 | 0.2% | $755m | 5,950,335 | -$34m -81,025 shares | Trimmed |
Tko Group Holdings Inc (TKO) CL A · CUSIP 87256C101 | 0.2% | $754m | 3,728,177 | +$36m +184,781 shares | Added |
Trane Technologies PLC (TT) SHS · CUSIP G8994E103 | 0.2% | $752m | 1,518,752 | +$72m -96,312 shares | Trimmed |
Elevance Health Inc Formerly COM · CUSIP 036752103 | 0.2% | $749m | 1,935,880 | +$92m -300,249 shares | Trimmed |
Wheaton Precious Metals Corp (WPM) COM · CUSIP 962879102 | 0.2% | $742m | 6,293,518 | -$122m -3,566 shares | Trimmed |
Snowflake Inc (SNOW) COM SHS · CUSIP 833445109 | 0.2% | $698m | 2,717,171 | +$441m +1,034,935 shares | Added |
Illinois Tool WKS Inc COM · CUSIP 452308109 | 0.2% | $698m | 2,578,238 | -$162m -731,762 shares | Trimmed |
Air Products and Chemicals I COM · CUSIP 009158106 | 0.2% | $688m | 445,145 | -$31m -138,609 shares | Trimmed |
Goldman Sachs Group Inc COM · CUSIP 38141G104 | 0.2% | $666m | 638,391 | -$186m -332,271 shares | Trimmed |
Everest Group LTD (EG) COM · CUSIP G3223R108 | 0.2% | $660m | 964,755 | +$408m +202,355 shares | Added |
Monster Beverage Corp New (MNST) COM · CUSIP 61174X109 | 0.2% | $654m | 6,725,020 | +$157m -45,437 shares | Trimmed |
Cenovus Energy Inc (CVE) COM · CUSIP 15135U109 | 0.2% | $651m | 16,121,165 | +$142m -1,266,994 shares | Trimmed |
Tesla Inc (TSLA) COM · CUSIP 88160R101 | 0.2% | $631m | 1,476,812 | +$561m +1,290,747 shares | Added |
Vulcan Matls Co COM · CUSIP 929160109 | 0.2% | $625m | 2,102,064 | -$900k -175,961 shares | Trimmed |
Curtiss Wright Corp (CW) COM · CUSIP 231561101 | 0.2% | $624m | 817,077 | +$95m +45,569 shares | Added |
Equifax Inc (EFX) COM · CUSIP 294429105 | 0.2% | $620m | 3,869,490 | -$236m -830,420 shares | Trimmed |
Cheniere Energy Inc (LNG) COM NEW · CUSIP 16411R208 | 0.2% | $618m | 2,559,742 | -$256m -487,535 shares | Trimmed |
Omnicom Group Inc (OMC) COM · CUSIP 681919106 | 0.2% | $612m | 8,305,876 | -$53m -430,789 shares | Trimmed |
Monolithic PWR Sys Inc COM · CUSIP 609839105 | 0.2% | $611m | 442,176 | -$9.6m -125,593 shares | Trimmed |
Airbnb Inc (ABNB) COM CL A · CUSIP 009066101 | 0.2% | $608m | 4,184,448 | +$216m +1,130,855 shares | Added |
Live Nation Entertainment In COM · CUSIP 538034109 | 0.2% | $591m | 3,231,342 | +$106m +48,918 shares | Added |
Royal BK Cda COM · CUSIP 780087102 | 0.2% | $577m | 2,000,754 | +$100m -156,478 shares | Trimmed |
CMS Energy Corp COM · CUSIP 125896100 | 0.2% | $576m | 7,242,159 | -$38m -388,214 shares | Trimmed |
SanDisk Corp (SNDK) COM · CUSIP 80004C200 | 0.2% | $575m | 249,714 | +$568m +238,420 shares | Added |
Axon Enterprise Inc (AXON) COM · CUSIP 05464C101 | 0.2% | $574m | 1,019,560 | +$141m +4,731 shares | Added |
American Elec PWR Co Inc COM · CUSIP 025537101 | 0.2% | $573m | 4,176,896 | -$19m -316,562 shares | Trimmed |
Northrop Grumman Corp COM · CUSIP 666807102 | 0.2% | $572m | 1,121,257 | -$469m -398,239 shares | Trimmed |
Oreilly Automotive Inc COM · CUSIP 67103H107 | 0.2% | $572m | 6,097,344 | -$110m -1,171,955 shares | Trimmed |
Starbucks Corp (SBUX) COM · CUSIP 855244109 | 0.2% | $567m | 5,482,836 | +$19m -510,988 shares | Trimmed |
Moodys Corp COM · CUSIP 615369105 | 0.2% | $566m | 1,186,385 | -$40m -141,627 shares | Trimmed |
Salesforce Inc (CRM) COM · CUSIP 79466L302 | 0.2% | $559m | 3,542,429 | -$374m -1,340,122 shares | Trimmed |
Renaissancere HLDGS LTD COM · CUSIP G7496G103 | 0.2% | $543m | 397,796 | +$452m +93,755 shares | Added |
Lam Research Corp (LRCX) COM NEW · CUSIP 512807306 | 0.2% | $540m | 1,218,684 | -$186m -2,090,837 shares | Trimmed |
Natera Inc (NTRA) COM · CUSIP 632307104 | 0.2% | $535m | 1,971,391 | +$127m -68,715 shares | Trimmed |
Alliant Energy Corp (LNT) COM · CUSIP 018802108 | 0.2% | $534m | 6,936,512 | +$24m -110,725 shares | Trimmed |
WW Grainger Inc COM · CUSIP 384802104 | 0.2% | $533m | 388,221 | +$33m -65,132 shares | Trimmed |
Hyatt Hotels Corp (H) COM CL A · CUSIP 448579102 | 0.2% | $531m | 2,739,255 | +$120m -115,927 shares | Trimmed |
Ross Stores Inc (ROST) COM · CUSIP 778296103 | 0.2% | $529m | 2,424,865 | +$128m +623,413 shares | Added |
Ferguson Enterprises Inc COMMON STOCK NEW · CUSIP 31488V107 | 0.2% | $518m | 2,174,605 | +$84m +324,075 shares | Added |
Coca-cola Europacific Partne SHS · CUSIP G25839104 | 0.2% | $512m | 5,147,644 | +$93m +509,710 shares | Added |
Eog Res Inc COM · CUSIP 26875P101 | 0.2% | $505m | 3,884,982 | -$182m -844,573 shares | Trimmed |
Valero Energy Corp COM · CUSIP 91913Y100 | 0.2% | $504m | 1,908,575 | -$400k -107,194 shares | Trimmed |
Vistra Corp (VST) COM · CUSIP 92840M102 | 0.2% | $502m | 3,160,826 | -$95m -790,963 shares | Trimmed |
Teck Resources LTD CL B · CUSIP 878742204 | 0.2% | $501m | 5,601,956 | +$188m -320,819 shares | Trimmed |
Ascendis Pharma A/s (ASND) ORD SHS · CUSIP K08588103 | 0.2% | $500m | 1,875,301 | No earlier filing | New |
Technipfmc PLC (FTI) COM · CUSIP G87110105 | 0.2% | $492m | 7,305,549 | -$49m -401,519 shares | Trimmed |
Uber Technologies Inc (UBER) COM · CUSIP 90353T100 | 0.2% | $483m | 6,571,183 | +$14m +162,911 shares | Added |
Aptiv PLC (APTV) COM SHS · CUSIP G3265R107 | 0.2% | $474m | 7,493,675 | +$408m +6,647,227 shares | Added |
Autoliv Inc (ALV) COM · CUSIP 052800109 | 0.1% | $469m | 866,287 | +$386m +77,849 shares | Added |
Cameco Corp (CCJ) COM · CUSIP 13321L108 | 0.1% | $462m | 4,292,490 | +$128m +1,421,799 shares | Added |
Colgate Palmolive Co (CL) COM · CUSIP 194162103 | 0.1% | $459m | 4,768,425 | +$39m +60,159 shares | Added |
Macom Tech Solutions HLDGS I COM · CUSIP 55405Y100 | 0.1% | $444m | 1,166,242 | +$260m +337,794 shares | Added |
Emerson Elec Co COM · CUSIP 291011104 | 0.1% | $443m | 3,017,999 | +$17m -155,182 shares | Trimmed |
TJX Cos Inc New COM · CUSIP 872540109 | 0.1% | $443m | 2,807,855 | -$57m -192,519 shares | Trimmed |
Comfort Sys USA Inc COM · CUSIP 199908104 | 0.1% | $440m | 220,776 | +$440m +220,548 shares | Added |
Lear Corp (LEA) COM NEW · CUSIP 521865204 | 0.1% | $436m | 1,435,811 | +$221m -316,235 shares | Trimmed |
Sempra COM · CUSIP 816851109 | 0.1% | $433m | 4,670,985 | -$21m -2,895 shares | Trimmed |
Mongodb Inc (MDB) CL A · CUSIP 60937P106 | 0.1% | $428m | 1,263,690 | +$207m +371,946 shares | Added |
Alphabet Inc CAP STK CL C · CUSIP 02079K107 | 0.1% | $427m | 1,202,207 | +$300m +757,847 shares | Added |
GFL Environmental Inc (GFL) SUB VTG SHS · CUSIP 36168Q104 | 0.1% | $423m | 10,865,869 | -$57m -80,261 shares | Trimmed |
Okta Inc (OKTA) CL A · CUSIP 679295105 | 0.1% | $421m | 3,060,676 | +$125m -676,628 shares | Trimmed |
Verisk Analytics Inc (VRSK) COM · CUSIP 92345Y106 | 0.1% | $419m | 2,214,155 | -$85m -329,335 shares | Trimmed |
LPL Finl HLDGS Inc COM · CUSIP 50212V100 | 0.1% | $414m | 1,458,759 | -$757m -2,410,600 shares | Trimmed |
Flutter Entmt PLC SHS · CUSIP G3643J108 | 0.1% | $410m | 3,984,512 | +$77m +722,095 shares | Added |
Ventas Inc (VTR) COM · CUSIP 92276F100 | 0.1% | $409m | 4,415,869 | +$26m -85,193 shares | Trimmed |
Suncor Energy Inc New (SU) COM · CUSIP 867224107 | 0.1% | $407m | 6,561,015 | +$111m +2,648,049 shares | Added |
Accenture PLC Ireland SHS CLASS A · CUSIP G1151C101 | 0.1% | $404m | 3,052,712 | -$2.1bn -6,776,149 shares | Trimmed |
Baker Hughes Company (BKR) CL A · CUSIP 05722G100 | 0.1% | $403m | 7,201,568 | +$267m +4,984,914 shares | Added |
Equinix Inc (EQIX) COM · CUSIP 29444U700 | 0.1% | $395m | 358,445 | +$146m +123,020 shares | Added |
Wabtec COM · CUSIP 929740108 | 0.1% | $391m | 1,428,720 | -$18m -188,006 shares | Trimmed |
Cloudflare Inc (NET) CL A COM · CUSIP 18915M107 | 0.1% | $387m | 1,578,485 | +$84m +111,375 shares | Added |
Hartford Insurance Group Inc COM · CUSIP 416515104 | 0.1% | $385m | 2,856,115 | -$2.4m +35,923 shares | Added |
Datadog Inc (DDOG) CL A COM · CUSIP 23804L103 | 0.1% | $383m | 1,465,168 | +$233m +196,458 shares | Added |
Revolution Medicines Inc COM · CUSIP 76155X100 | 0.1% | $377m | 2,012,317 | No earlier filing | New |
Masco Corp COM · CUSIP 574599106 | 0.1% | $373m | 4,522,430 | +$108m +198,636 shares | Added |
Icon Pub LTD Co SHS · CUSIP G4705A100 | 0.1% | $369m | 2,105,171 | +$65m -622,653 shares | Trimmed |
Agco Corp COM · CUSIP 001084102 | 0.1% | $365m | 2,999,252 | +$28m +135,996 shares | Added |
Public SVC Enterprise Group COM · CUSIP 744573106 | 0.1% | $361m | 4,442,143 | +$1.9m +12,451 shares | Added |
Ingersoll Rand Inc (IR) COM · CUSIP 45687V106 | 0.1% | $355m | 4,301,093 | -$1.1m -110,525 shares | Trimmed |
Williams Cos Inc COM · CUSIP 969457100 | 0.1% | $354m | 4,695,435 | No earlier filing | New |
Ametek Inc (AME) COM · CUSIP 031100100 | 0.1% | $352m | 1,445,401 | +$46m +31,564 shares | Added |
Brunswick Corp COM · CUSIP 117043109 | 0.1% | $352m | 4,136,460 | +$62m +181,650 shares | Added |
Cme Group Inc (CME) COM · CUSIP 12572Q105 | 0.1% | $346m | 1,480,387 | -$109m +873 shares | Added |
Quanta SVCS Inc COM · CUSIP 74762E102 | 0.1% | $344m | 477,445 | -$182m -480,654 shares | Trimmed |
L3harris Technologies Inc COM · CUSIP 502431109 | 0.1% | $341m | 1,165,051 | -$72m -22,795 shares | Trimmed |
Edison Intl COM · CUSIP 281020107 | 0.1% | $335m | 4,459,540 | +$12m +82,301 shares | Added |
Teradyne Inc (TER) COM · CUSIP 880770102 | 0.1% | $335m | 678,033 | +$275m +476,751 shares | Added |
Burlington Stores Inc (BURL) COM · CUSIP 122017106 | 0.1% | $333m | 1,038,322 | -$70m -187,747 shares | Trimmed |
International Flavors&fragra COM · CUSIP 459506101 | 0.1% | $332m | 3,871,551 | +$88m +804,612 shares | Added |
Autodesk Inc (ADSK) COM · CUSIP 052769106 | 0.1% | $331m | 1,655,978 | -$506m -1,763,160 shares | Trimmed |
Jabil Inc (JBL) COM · CUSIP 466313103 | 0.1% | $331m | 857,505 | +$190m +326,710 shares | Added |
Church & Dwight Co Inc COM · CUSIP 171340102 | 0.1% | $329m | 3,191,586 | -$18m -326,132 shares | Trimmed |
Carlyle Group Inc COM · CUSIP 14316J108 | 0.1% | $329m | 7,739,524 | -$44m +90,515 shares | Added |
WP Carey Inc COM · CUSIP 92936U109 | 0.1% | $325m | 4,467,099 | +$35m +276,166 shares | Added |
Bank Montreal Medium COM · CUSIP 063671101 | 0.1% | $325m | 1,300,991 | +$71m -50,323 shares | Trimmed |
Atmos Energy Corp (ATO) COM · CUSIP 049560105 | 0.1% | $321m | 1,842,583 | -$9.9m +69,982 shares | Added |
Every filing on file
| Quarter | Period end | Filed | Book | Positions | Top 10 | Filing |
|---|---|---|---|---|---|---|
| Q2 2026 | 30 Jun 2026 | 3 Aug 2026 | $315bn | 1,005 | 23% | 13F-HR |
| Q1 2026 | 31 Mar 2026 | 14 May 2026 | $298bn | 946 | 21% | 13F-HR |
| Q4 2025 | 31 Dec 2025 | 22 Jan 2026 | $310bn | 917 | 21% | 13F-HR |
| Q3 2025 | 30 Sept 2025 | 29 Oct 2025 | $323bn | 857 | 22% | 13F-HR |
| Q2 2025 | 30 Jun 2025 | 8 Aug 2025 | $315bn | 884 | 20% | 13F-HR |
| Q1 2025 | 31 Mar 2025 | 2 May 2025 | $301bn | 880 | 19% | 13F-HR |
| Q4 2024 | 31 Dec 2024 | 12 Feb 2025 | $317bn | 875 | 21% | 13F-HR |
| Q3 2024 | 30 Sept 2024 | 12 Nov 2024 | $335bn | 846 | 20% | 13F-HR |
Taking this into the room
Pick one name from the top of the book and one from the new positions, and know both properly: what the company earns, what it is priced at, and what has to be true for the position to work. That is a conversation. Reciting the whole table is not, and the interviewer wrote it.
A position sold out of is worth as much preparation as one opened. Ask what changed rather than asserting the fund was wrong, and be ready for the answer that the thesis played out and the money went somewhere better.
What this filing leaves out
A 13F covers US-listed long equity at one moment in time. Shorts, bonds, cash, private positions and non-US listings never appear, and options are reported in a form that will mislead you if you read them as a position. A long/short manager showing $8bn here may run a book several times that size.
The lag matters too. Positions are as at the quarter end and the filing arrives up to forty-five days later, so what you are reading is at least six weeks old and possibly four months. Phrase it as what the filing showed, not what the fund holds today.
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