Mfs Series Trust I. Holdings as of May 31, 2026, from Form N-PORT.
Share of net assets at the report date, for the whole fund across all share classes.
| Holding | Weight | Value | Shares or units |
|---|---|---|---|
| JPMorgan Chase & CoJPM | 4.28% | $2.19B | 7,311,533 |
| Cigna Group/TheCI | 2.80% | $1.43B | 5,165,954 |
| Johnson & JohnsonJNJ | 2.75% | $1.41B | 6,243,503 |
| Analog Devices IncADI | 2.71% | $1.39B | 3,348,129 |
| Morgan StanleyMS | 2.68% | $1.37B | 6,588,396 |
| RTX CorpRTX | 2.50% | $1.28B | 7,114,543 |
| KLA CorpKLAC | 2.47% | $1.26B | 656,782 |
| Progressive Corp/ThePGR | 2.45% | $1.25B | 6,584,694 |
| Boeing Co/TheBA | 2.42% | $1.24B | 5,353,903 |
| Exxon Mobil CorpXOM | 2.33% | $1.19B | 8,204,104 |
| McKesson CorpMCK | 2.28% | $1.16B | 1,566,944 |
| Honeywell International IncHON | 2.08% | $1.06B | 4,473,957 |
| Nasdaq IncNDAQ | 2.06% | $1.05B | 11,378,090 |
| General Dynamics CorpGD | 2.01% | $1.03B | 2,966,184 |
| Amazon.com IncAMZN | 2.00% | $1.02B | 3,769,629 |
| Prologis IncPLD | 1.98% | $1.01B | 7,043,223 |
| ConocoPhillipsCOP | 1.91% | $975.66M | 8,559,880 |
| Citigroup IncC | 1.90% | $972.99M | 7,728,286 |
| NXP Semiconductors NV | 1.90% | $971.02M | 3,021,687 |
| Dominion Energy IncD | 1.90% | $969.18M | 14,478,338 |
| Marriott International Inc/MDMAR | 1.85% | $943.94M | 2,513,158 |
| Travelers Cos Inc/TheTRV | 1.83% | $936.22M | 3,207,432 |
| Union Pacific CorpUNP | 1.82% | $928.75M | 3,536,201 |
| Duke Energy CorpDUK | 1.81% | $927.39M | 7,556,374 |
| Texas Instruments IncTXN | 1.80% | $918.48M | 3,004,695 |
| American Express CoAXP | 1.76% | $898.89M | 2,840,352 |
| Chubb Ltd | 1.70% | $870.64M | 2,792,935 |
| Lowe's Cos IncLOW | 1.58% | $809.62M | 3,776,904 |
| Marsh & McLennan Cos IncMRSH | 1.53% | $783.29M | 4,896,500 |
| Aon PLC | 1.49% | $763.71M | 2,416,344 |
| Chevron CorpCVX | 1.47% | $752.89M | 4,126,336 |
| PNC Financial Services Group Inc/ThePNC | 1.46% | $746.71M | 3,376,948 |
| Blackrock IncBLK | 1.43% | $732.46M | 699,661 |
| Southern Co/TheSO | 1.41% | $718.35M | 7,803,904 |
| Xcel Energy IncXEL | 1.34% | $684.56M | 8,610,810 |
| Wells Fargo & CoWFC | 1.28% | $652.10M | 8,409,874 |
| Accenture PLC | 1.25% | $640.12M | 3,421,795 |
| AbbVie IncABBV | 1.22% | $626.09M | 2,875,656 |
| KKR & Co IncKKR | 1.22% | $623.57M | 6,499,627 |
| PACCAR IncPCAR | 1.17% | $599.35M | 5,430,347 |
| Eaton Corp PLC | 1.15% | $585.62M | 1,461,859 |
| PG&E CorpPCG | 1.13% | $577.03M | 35,313,901 |
| Abbott LaboratoriesABT | 1.11% | $566.51M | 6,618,090 |
| Elevance Health IncELV | 1.07% | $548.81M | 1,395,797 |
| CRH PLC | 1.05% | $535.16M | 4,919,217 |
| PepsiCo IncPEP | 1.03% | $527.26M | 3,656,679 |
| Alphabet IncGOOGL | 0.98% | $501.79M | 1,319,327 |
| Illinois Tool Works IncITW | 0.97% | $497.76M | 2,012,943 |
| Northrop Grumman CorpNOC | 0.94% | $478.27M | 848,481 |
| Humana IncHUM | 0.93% | $474.89M | 1,554,873 |