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Holdings (Monthly) Guide ↗

MFS Core Equity Fund

· Mfs Series Trust I
Monthly Holdings $6.5B AUM 187 positions Period May 2026 Filed Jul 27, 2026 EDGAR ↗ ← All Funds
All 42 New 28 Added 102 Reduced 15 Exited · May 2026 vs Feb 2026
# Name Ticker Since Shares Shares Δ Value Val Δ% % Port Cat
1 NVIDIA Corp 67066G104 Feb 2026 2,374,239 -179,779 $501.3M +10.8% 7.73% EC
2 Apple Inc 037833100 Feb 2026 1,274,401 -145,569 $397.7M +6.0% 6.13% EC
3 Alphabet Inc 02079K305 Feb 2026 917,655 -23,565 $349.0M +18.9% 5.38% EC
4 Microsoft Corp 594918104 Feb 2026 734,623 -59,575 $330.8M +6.0% 5.10% EC
5 Amazon.com Inc 023135106 Feb 2026 1,220,482 -13,620 $330.3M +27.5% 5.09% EC
6 Broadcom Inc 11135F101 Feb 2026 551,360 +7,097 $246.3M +41.6% 3.80% EC
7 Meta Platforms Inc 30303M102 Feb 2026 256,912 -956 $162.5M -2.8% 2.51% EC
8 JPMorgan Chase & Co 46625H100 Feb 2026 396,192 -32,803 $118.6M -8.0% 1.83% EC
9 Arista Networks Inc 040413205 Feb 2026 703,729 +340,917 $112.2M +131.7% 1.73% EC
10 Pfizer Inc 717081103 Feb 2026 3,640,296 -404,193 $95.3M -14.8% 1.47% EC
11 Mastercard Inc 57636Q104 Feb 2026 176,224 -9,075 $87.1M -9.2% 1.34% EC
12 Johnson & Johnson 478160104 Feb 2026 380,934 -195,248 $85.8M -40.0% 1.32% EC
13 Gilead Sciences Inc 375558103 Feb 2026 601,901 -237,048 $80.9M -35.2% 1.25% EC
14 Micron Technology Inc 595112103 May 2026 81,558 NEW $79.2M — 1.22% EC
15 Cadence Design Systems Inc 127387108 Feb 2026 180,331 -9,284 $67.6M +18.3% 1.04% EC
16 Exxon Mobil Corp 30231G102 Feb 2026 444,495 -167,878 $64.6M -30.9% 1.00% EC
17 KLA Corp 482480100 Feb 2026 32,863 -7,531 $63.2M +2.6% 0.97% EC
18 Caterpillar Inc 149123101 Feb 2026 70,467 -12,334 $61.7M +0.3% 0.95% EC
19 ConocoPhillips 20825C104 Feb 2026 498,240 +134,686 $56.8M +37.7% 0.88% EC
20 Sandisk Corp/DE 80004C200 May 2026 30,232 NEW $51.2M — 0.79% EC
21 Morgan Stanley 617446448 Feb 2026 237,281 -34,223 $49.4M +9.2% 0.76% EC
22 Medtronic PLC 000000000 Feb 2026 636,626 +563,795 $47.0M +71.6% 0.72% EC
23 Amphenol Corp 032095101 Feb 2026 314,115 +31,844 $46.7M +13.3% 0.72% EC
24 Honeywell International Inc 438516106 May 2026 196,375 NEW $46.7M — 0.72% EC
25 MYR Group Inc 55405W104 Feb 2026 96,722 -12,691 $45.0M +52.3% 0.69% EC
26 Vertex Pharmaceuticals Inc 92532F100 May 2026 99,165 NEW $44.4M — 0.68% EC
27 Wells Fargo & Co 949746101 Feb 2026 570,397 +93,359 $44.2M +13.8% 0.68% EC
28 Netflix Inc 64110L106 May 2026 512,052 NEW $44.0M — 0.68% EC
29 BJ's Wholesale Club Holdings Inc 05550J101 Feb 2026 514,269 +13,094 $43.9M -11.4% 0.68% EC
30 Waters Corp 941848103 Feb 2026 111,648 -5,749 $42.8M +14.2% 0.66% EC
31 Cigna Group/The 125523100 Feb 2026 152,934 -1,110 $42.4M -5.0% 0.65% EC
32 T-Mobile US Inc 872590104 Feb 2026 225,820 +3,260 $42.3M -12.4% 0.65% EC
33 Chubb Ltd 000000000 Feb 2026 129,971 NEW $40.5M — 0.62% EC
34 Legence Corp 52476L109 Feb 2026 477,783 -69,537 $40.0M +25.9% 0.62% EC
35 Simpson Manufacturing Co Inc 829073105 May 2026 203,857 NEW $38.7M — 0.60% EC
36 GE Vernova Inc 36828A101 Feb 2026 39,482 -5,911 $38.2M -3.6% 0.59% EC
37 Carvana Co 146869102 Feb 2026 523,123 +418,805 $38.2M +9.6% 0.59% EC
38 TJX Cos Inc/The 872540109 Feb 2026 246,310 -12,683 $38.1M -9.0% 0.59% EC
39 PNC Financial Services Group Inc/The 693475105 Feb 2026 171,534 -96,981 $37.9M -33.5% 0.58% EC
40 Uber Technologies Inc 90353T100 Feb 2026 535,625 -27,579 $37.7M -11.2% 0.58% EC
41 PepsiCo Inc 713448108 Feb 2026 260,251 -13,402 $37.5M -19.2% 0.58% EC
42 Philip Morris International Inc 718172109 Feb 2026 211,290 -10,879 $37.5M -9.7% 0.58% EC
43 CRH PLC 000000000 Feb 2026 338,294 NEW $36.8M — 0.57% EC
44 Trane Technologies PLC 000000000 Feb 2026 78,146 NEW $35.3M — 0.54% EC
45 RTX Corp 75513E101 Feb 2026 195,581 -25,233 $35.1M -21.5% 0.54% EC
46 Aon PLC 000000000 Feb 2026 109,765 NEW $34.7M — 0.53% EC
47 Guidewire Software Inc 40171V100 Feb 2026 222,522 +5,697 $34.0M +7.8% 0.52% EC
48 JP Morgan US Government Money Market Fund 4812C2270 Feb 2026 33,075,626 +31,775,826 $33.1M +2444.7% 0.51% STIV
49 Analog Devices Inc 032654105 May 2026 79,686 NEW $33.0M — 0.51% EC
50 Charles Schwab Corp/The 808513105 Feb 2026 371,968 -19,153 $32.5M -12.7% 0.50% EC
51 Digital Realty Trust Inc 253868103 Feb 2026 165,307 +15,078 $31.4M +18.0% 0.48% EC
52 Okta Inc 679295105 Feb 2026 254,329 +51,073 $31.4M +112.8% 0.48% EC
53 Floor & Decor Holdings Inc 339750101 Feb 2026 604,813 +95,576 $31.1M -11.6% 0.48% EC
54 Boston Scientific Corp 101137107 Feb 2026 627,315 +319,857 $30.3M +28.3% 0.47% EC
55 Becton Dickinson & Co 075887109 Feb 2026 203,167 -33,676 $29.9M -28.5% 0.46% EC
56 AMETEK Inc 031100100 Feb 2026 126,816 -20,105 $28.6M -18.5% 0.44% EC
57 Hilton Worldwide Holdings Inc 43300A203 Feb 2026 86,995 -4,480 $28.5M -0.1% 0.44% EC
58 PG&E Corp 69331C108 Feb 2026 1,722,413 -88,683 $28.1M -18.2% 0.43% EC
59 Emerson Electric Co 291011104 Feb 2026 193,769 -99,811 $27.9M -37.0% 0.43% EC
60 GFL Environmental Inc 36168Q104 Feb 2026 825,175 -42,488 $27.7M -27.8% 0.43% EC
61 JFrog Ltd 000000000 Feb 2026 342,429 NEW $27.2M — 0.42% EC
62 Seagate Technology Holdings PLC 000000000 Feb 2026 30,533 NEW $26.9M — 0.41% EC
63 Spotify Technology SA 000000000 Feb 2026 53,783 NEW $26.8M — 0.41% EC
64 Colgate-Palmolive Co 194162103 Feb 2026 293,805 +77,844 $26.5M +23.7% 0.41% EC
65 KKR & Co Inc 48251W104 Feb 2026 274,185 -14,116 $26.3M +4.1% 0.41% EC
66 Moody's Corp 615369105 Feb 2026 57,848 -2,979 $26.2M -9.7% 0.40% EC
67 Cheniere Energy Inc 16411R208 Feb 2026 113,029 -5,820 $25.4M -9.3% 0.39% EC
68 Aramark 03852U106 Feb 2026 476,075 -24,512 $25.4M +21.3% 0.39% EC
69 Howmet Aerospace Inc 443201108 Feb 2026 96,696 -4,979 $25.0M -6.4% 0.39% EC
70 Leidos Holdings Inc 525327102 Feb 2026 194,706 +44,763 $24.9M -5.2% 0.38% EC
71 CME Group Inc 12572Q105 Feb 2026 90,604 -4,665 $24.8M -18.6% 0.38% EC
72 Curtiss-Wright Corp 231561101 Feb 2026 33,060 -3,246 $24.7M -2.8% 0.38% EC
73 WW Grainger Inc 384802104 Feb 2026 19,906 -1,023 $24.6M +2.5% 0.38% EC
74 Linde PLC 000000000 Feb 2026 48,778 NEW $24.3M — 0.37% EC
75 Progressive Corp/The 743315103 Feb 2026 125,443 -6,459 $23.9M -15.3% 0.37% EC
76 Pentair PLC 000000000 Feb 2026 334,890 NEW $23.7M — 0.37% EC
77 Mondelez International Inc 609207105 Feb 2026 382,571 -19,698 $23.4M -5.5% 0.36% EC
78 Federal Realty Investment Trust 313745101 Feb 2026 194,257 -10,003 $23.2M +4.6% 0.36% EC
79 Visa Inc 92826C839 Feb 2026 70,973 -24,360 $23.2M -24.1% 0.36% EC
80 Sempra 816851109 Feb 2026 258,965 -13,335 $23.1M -12.0% 0.36% EC
81 Performance Food Group Co 71377A103 Feb 2026 232,633 +96,414 $22.8M +72.8% 0.35% EC
82 Illumina Inc 452327109 Feb 2026 137,830 +32,931 $22.5M +59.2% 0.35% EC
83 Valero Energy Corp 91913Y100 Feb 2026 90,155 +37,905 $22.1M +106.4% 0.34% EC
84 Autodesk Inc 052769106 Feb 2026 95,207 -73,123 $22.0M -46.8% 0.34% EC
85 Humana Inc 444859102 Feb 2026 72,055 +6,500 $22.0M +76.2% 0.34% EC
86 Accenture PLC 000000000 Feb 2026 112,696 NEW $21.1M — 0.33% EC
87 Duke Energy Corp 26441C204 Feb 2026 171,345 -8,822 $21.0M -10.8% 0.32% EC
88 MACOM Technology Solutions Holdings Inc 55405Y100 Feb 2026 56,940 -2,931 $20.8M +39.8% 0.32% EC
89 Arthur J Gallagher & Co 363576109 Feb 2026 101,906 -5,248 $20.5M -16.2% 0.32% EC
90 Starbucks Corp 855244109 Feb 2026 206,469 -10,631 $20.5M -3.8% 0.32% EC
91 General Dynamics Corp 369550108 Feb 2026 57,310 -2,952 $19.9M -7.6% 0.31% EC
92 Intuit Inc 461202103 Feb 2026 58,917 -27,920 $19.5M -45.0% 0.30% EC
93 NextEra Energy Inc 65339F101 Feb 2026 223,495 -11,508 $19.4M -11.8% 0.30% EC
94 Vistra Corp 92840M102 Feb 2026 121,013 -6,231 $19.4M -12.4% 0.30% EC
95 Kenvue Inc 49177J102 Feb 2026 1,079,666 +86,509 $18.7M -1.8% 0.29% EC
96 DigitalOcean Holdings Inc 25402D102 May 2026 116,843 NEW $18.2M — 0.28% EC
97 EchoStar Corp 278768106 Feb 2026 140,015 -7,208 $18.1M +6.3% 0.28% EC
98 MFS Institutional Money Market Portfolio 55291X109 Feb 2026 17,973,785 -17,939,165 $18.0M -50.0% 0.28% EC
99 Tractor Supply Co 892356106 Feb 2026 562,995 -28,987 $17.8M -42.2% 0.27% EC
100 TransUnion 89400J107 Feb 2026 244,849 -12,607 $17.5M -13.4% 0.27% EC
101 Nordson Corp 655663102 Feb 2026 60,172 -35,961 $17.3M -38.7% 0.27% EC
102 NNN REIT Inc 637417106 Feb 2026 388,158 -19,985 $17.3M -6.6% 0.27% EC
103 Advanced Energy Industries Inc 007973100 Feb 2026 56,650 -2,917 $17.1M -14.4% 0.26% EC
104 Take-Two Interactive Software Inc 874054109 Feb 2026 76,198 +15,275 $17.1M +32.6% 0.26% EC
105 Willis Towers Watson PLC 000000000 Feb 2026 68,046 NEW $17.0M — 0.26% EC
106 Viking Holdings Ltd 000000000 Feb 2026 182,431 NEW $16.8M — 0.26% EC
107 Zebra Technologies Corp 989207105 Feb 2026 68,295 +27,923 $16.6M +84.0% 0.26% EC
108 Principal Financial Group Inc 74251V102 Feb 2026 160,262 -8,252 $16.6M +3.3% 0.26% EC
109 SLB Ltd 806857108 Feb 2026 299,785 -15,435 $16.4M +1.0% 0.25% EC
110 XPO Inc 983793100 May 2026 76,320 NEW $16.4M — 0.25% EC
111 American Express Co 025816109 May 2026 49,294 NEW $15.6M — 0.24% EC
112 ICON PLC 000000000 Feb 2026 114,620 NEW $15.6M — 0.24% EC
113 Sherwin-Williams Co/The 824348106 Feb 2026 49,961 -2,572 $15.2M -20.3% 0.23% EC
114 FedEx Corp 31428X106 May 2026 36,446 NEW $15.0M — 0.23% EC
115 RBC Bearings Inc 75524B104 May 2026 26,228 NEW $15.0M — 0.23% EC
116 Jacobs Solutions Inc 46982L108 Feb 2026 124,286 -31,526 $14.9M -30.6% 0.23% EC
117 Coherent Corp 19247G107 Feb 2026 40,478 -2,085 $14.6M +32.8% 0.23% EC
118 Birkenstock Holding Plc 000000000 Feb 2026 324,126 NEW $14.6M — 0.23% EC
119 Block Inc 852234103 Feb 2026 192,105 -9,891 $14.5M +13.0% 0.22% EC
120 Repligen Corp 759916109 Feb 2026 115,736 -5,961 $14.3M -8.4% 0.22% EC
121 Albemarle Corp 012653101 Feb 2026 79,903 -4,113 $14.1M -6.1% 0.22% EC
122 BWX Technologies Inc 05605H100 Feb 2026 70,614 -3,636 $13.8M -9.6% 0.21% EC
123 Xcel Energy Inc 98389B100 Feb 2026 173,108 -8,914 $13.8M -9.3% 0.21% EC
124 General Electric Co 369604301 Feb 2026 40,743 -76,478 $13.2M -67.1% 0.20% EC
125 Bentley Systems Inc 08265T208 May 2026 395,572 NEW $12.9M — 0.20% EC
126 Ferguson Enterprises Inc 31488V107 Feb 2026 54,136 -2,787 $12.2M -17.6% 0.19% EC
127 Live Nation Entertainment Inc 538034109 Feb 2026 72,501 +15,979 $12.2M +33.2% 0.19% EC
128 EQT Corp 26884L109 Feb 2026 221,664 +24,285 $12.2M +0.4% 0.19% EC
129 MongoDB Inc 60937P106 Feb 2026 35,467 -9,328 $11.9M -19.1% 0.18% EC
130 Verisk Analytics Inc 92345Y106 Feb 2026 67,627 -3,483 $11.8M -19.8% 0.18% EC
131 Raymond James Financial Inc 754730109 Feb 2026 81,704 -4,207 $11.7M -10.9% 0.18% EC
132 Evergy Inc 30034W106 Feb 2026 141,896 -7,305 $11.6M -6.7% 0.18% EC
133 Primoris Services Corp 74164F103 May 2026 91,883 NEW $11.6M — 0.18% EC
134 Coca-Cola Europacific Partners PLC 000000000 Feb 2026 126,581 NEW $11.5M — 0.18% EC
135 Assurant Inc 04621X108 Feb 2026 45,386 -2,336 $11.3M +3.1% 0.17% EC
136 STERIS PLC 000000000 Feb 2026 53,059 NEW $11.3M — 0.17% EC
137 TechnipFMC PLC 000000000 Feb 2026 158,780 NEW $10.9M — 0.17% EC
138 Prosperity Bancshares Inc 743606105 Feb 2026 156,902 -8,079 $10.8M -6.8% 0.17% EC
139 LKQ Corp 501889208 Feb 2026 393,238 -20,247 $10.7M -22.1% 0.16% EC
140 Aptiv PLC 000000000 Feb 2026 149,418 NEW $10.2M — 0.16% EC
141 Northern Trust Corp 665859104 Feb 2026 60,312 -3,106 $10.0M +10.0% 0.15% EC
142 Columbia Banking System Inc 197236102 Feb 2026 327,702 -16,874 $9.7M -0.9% 0.15% EC
143 Avery Dennison Corp 053611109 Feb 2026 60,857 -3,135 $9.7M -23.0% 0.15% EC
144 Selective Insurance Group Inc 816300107 Feb 2026 111,565 -5,745 $9.7M -2.1% 0.15% EC
145 TPG Inc 872657101 Feb 2026 222,439 -11,452 $9.5M -6.8% 0.15% EC
146 Permian Resources Corp 71424F105 Feb 2026 487,959 -122,959 $9.4M -16.0% 0.14% EC
147 Highwoods Properties Inc 431284108 Feb 2026 358,645 -18,467 $9.4M +10.4% 0.14% EC
148 Visteon Corp 92839U206 May 2026 78,850 NEW $9.3M — 0.14% EC
149 International Paper Co 460146103 May 2026 276,700 NEW $9.3M — 0.14% EC
150 Fidelity National Information Services Inc 31620M106 Feb 2026 212,869 -10,960 $9.2M -19.8% 0.14% EC
151 Everest Group Ltd 000000000 Feb 2026 28,163 NEW $9.1M — 0.14% EC
152 Dutch Bros Inc 26701L100 Feb 2026 149,660 -64,615 $8.7M -24.4% 0.13% EC
153 Tyson Foods Inc 902494103 Feb 2026 140,713 -7,245 $8.6M -10.7% 0.13% EC
154 Arxis Inc 04339D105 May 2026 178,822 NEW $8.0M — 0.12% EC
155 Lincoln National Corp 534187109 Feb 2026 224,291 -11,548 $7.9M -2.2% 0.12% EC
156 IDEXX Laboratories Inc 45168D104 May 2026 13,976 NEW $7.9M — 0.12% EC
157 Amer Sports Inc 000000000 Feb 2026 213,242 NEW $7.6M — 0.12% EC
158 Bright Horizons Family Solutions Inc 109194100 Feb 2026 113,959 -5,868 $7.1M -20.1% 0.11% EC
159 Grand Canyon Education Inc 38526M106 Feb 2026 44,607 +8,248 $6.7M +15.6% 0.10% EC
160 Rexford Industrial Realty Inc 76169C100 Feb 2026 187,664 -9,663 $6.7M -10.0% 0.10% EC
161 Smartstop Self Storage REIT Inc 83192D402 Feb 2026 202,452 -10,424 $6.3M -10.9% 0.10% EC
162 Donaldson Co Inc 257651109 May 2026 69,171 NEW $5.7M — 0.09% EC
163 Lumexa Imaging Holdings Inc 550249106 Feb 2026 705,991 +45,482 $5.5M -41.2% 0.08% EC
164 International Flavors & Fragrances Inc 459506101 May 2026 67,624 NEW $5.1M — 0.08% EC
165 DraftKings Inc 26142V105 Feb 2026 183,432 -9,445 $4.5M -2.3% 0.07% EC
166 Columbia Sportswear Co 198516106 Feb 2026 65,684 -3,383 $4.3M +1.6% 0.07% EC
167 Celsius Holdings Inc 15118V207 Feb 2026 123,242 -6,346 $4.1M -41.0% 0.06% EC
168 Wolverine World Wide Inc 978097103 Feb 2026 194,384 -10,008 $3.4M -5.5% 0.05% EC
169 Phoenix Education Partners Inc 718968100 Feb 2026 101,181 -5,209 $3.1M -2.8% 0.05% EC
170 Waystar Holding Corp 946784105 Feb 2026 125,973 -6,486 $2.5M -26.2% 0.04% EC
171 elf Beauty Inc 26856L103 May 2026 32,128 NEW $1.8M — 0.03% EC
172 Bullish 000000000 Feb 2026 41,068 NEW $1.4M — 0.02% EC
✕ Lam Research Corp 512807306 — 439,325 SOLD $102.8M — — —
✕ McKesson Corp 58155Q103 — 27,718 SOLD $27.4M — — —
✕ Procter & Gamble Co/The 742718109 — 118,779 SOLD $19.9M — — —
✕ PulteGroup Inc 745867101 — 130,892 SOLD $18.0M — — —
✕ Tyler Technologies Inc 902252105 — 46,838 SOLD $16.6M — — —
✕ Walt Disney Co/The 254687106 — 152,622 SOLD $16.2M — — —
✕ HubSpot Inc 443573100 — 57,333 SOLD $15.2M — — —
✕ Roku Inc 77543R102 — 146,036 SOLD $14.4M — — —
✕ Crane Co 224408104 — 65,172 SOLD $13.1M — — —
✕ AbbVie Inc 00287Y109 — 54,962 SOLD $12.8M — — —
✕ Phillips 66 718546104 — 58,861 SOLD $9.1M — — —
✕ Omnicom Group Inc 681919106 — 91,439 SOLD $7.8M — — —
✕ StandardAero Inc 85423L103 — 228,825 SOLD $7.0M — — —
✕ First Solar Inc 336433107 — 33,817 SOLD $6.7M — — —
✕ Brunswick Corp/DE 117043109 — 35,558 SOLD $2.8M — — —