MDY · State Street SPDR S&P MidCap 400SM ETF Trust ETF
SPDR S&P MIDCAP 400 ETF TRUST
$691.52
+0.13%
At close · Sep 4
Net assets $28,052,918,544
Holdings400
1 month
-2.49%
Year to date
+15.20%
52-week range
$568.21–$717.35
30-session avg volume
540,684
Market performance
Adjusted close · up to five years
Fund profile
- Structure
- Unit investment trust
- SEC series
- Report date
- Jun 30, 2026
- Holdings coverage
- Full reported portfolio
Portfolio concentration
Top 10 holdings7.69%
Calculated only when the SEC filing is stored with complete portfolio coverage.
Asset allocation
EC99.43%
Country allocation
US93.54%
BM1.42%
IE1.33%
GB1.04%
KY0.85%
CA0.75%
NL0.27%
Other0.24%
Portfolio holdings
Latest linked SEC Form NPORT-P report.
| Holding | Ticker / CUSIP | Value | Weight |
|---|---|---|---|
| TWILIO INC | TWLO | $240,946,190 | 0.86% |
| CARPENTER TECHNOLOGY CORP | CRS | $235,819,166 | 0.84% |
| MKS INC | MKSI | $231,158,112 | 0.82% |
| CURTISS-WRIGHT CORP | CW | $215,379,640 | 0.77% |
| NVENT ELECTRIC PLC | 000000000 | $211,044,366 | 0.75% |
| ENTEGRIS INC | ENTG | $211,037,292 | 0.75% |
| ATI INC | ATI | $206,959,533 | 0.74% |
| ILLUMINA INC | ILMN | $204,683,703 | 0.73% |
| TECHNIPFMC PLC | 000000000 | $203,384,996 | 0.73% |
| STERLING INFRASTRUCTURE INC | STRL | $198,184,647 | 0.71% |
| MASTEC INC | MTZ | $197,238,652 | 0.70% |
| WOODWARD INC | WWD | $195,031,907 | 0.70% |
| MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC | MTSI | $192,032,837 | 0.68% |
| EVERPURE INC | P | $191,289,908 | 0.68% |
| XPO INC | XPO | $185,449,132 | 0.66% |
| UNITED THERAPEUTICS CORP | UTHR | $176,946,507 | 0.63% |
| OKTA INC | OKTA | $176,019,681 | 0.63% |
| US FOODS HOLDING CORP | USFD | $173,253,014 | 0.62% |
| RB GLOBAL INC | RBA | $166,920,944 | 0.60% |
| LATTICE SEMICONDUCTOR CORP | LSCC | $161,242,019 | 0.57% |
| RBC BEARINGS INC | RBC | $156,320,447 | 0.56% |
| FABRINET | 000000000 | $154,946,345 | 0.55% |
| TD SYNNEX CORP | SNX | $153,785,464 | 0.55% |
| BURLINGTON STORES INC | BURL | $153,145,872 | 0.55% |
| TTM TECHNOLOGIES INC | TTMI | $149,436,274 | 0.53% |
| RELIANCE INC | RS | $146,739,619 | 0.52% |
| ONTO INNOVATION INC | ONTO | $144,847,953 | 0.52% |
| ROKU INC | ROKU | $139,438,516 | 0.50% |
| BWX TECHNOLOGIES INC | BWXT | $137,210,537 | 0.49% |
| NEXTPOWER INC | NXT | $136,104,940 | 0.49% |
| EAST WEST BANCORP INC | EWBC | $136,067,831 | 0.49% |
| ITT INC | ITT | $136,030,798 | 0.48% |
| PERFORMANCE FOOD GROUP COMPANY | PFGC | $135,115,207 | 0.48% |
| TALEN ENERGY CORP | TLN | $134,214,333 | 0.48% |
| NEUROCRINE BIOSCIENCES INC | NBIX | $130,386,766 | 0.46% |
| COEUR MINING INC | CDE | $129,900,966 | 0.46% |
| WESCO INTERNATIONAL INC | WCC | $129,448,856 | 0.46% |
| SITIME CORP | SITM | $127,185,826 | 0.45% |
| SOMNIGROUP INTERNATIONAL INC | SGI | $126,880,600 | 0.45% |
| ANNALY CAPITAL MANAGEMENT INC | NLY | $126,066,507 | 0.45% |
| API GROUP CORP | APG | $125,637,500 | 0.45% |
| ROYAL GOLD INC | RGLD | $125,123,732 | 0.45% |
| TENET HEALTHCARE CORP | THC | $123,986,522 | 0.44% |
| ROIVANT SCIENCES LTD | 000000000 | $122,775,377 | 0.44% |
| W.P. CAREY INC | WPC | $122,534,269 | 0.44% |
| REGAL REXNORD CORP | RRX | $121,998,060 | 0.43% |
| TOLL BROTHERS INC | TOL | $120,047,888 | 0.43% |
| DYCOM INDUSTRIES INC | DY | $116,771,066 | 0.42% |
| PINNACLE FINANCIAL PARTNERS INC | PNFP | $116,738,033 | 0.42% |
| JAZZ PHARMACEUTICALS PLC | 000000000 | $116,330,195 | 0.41% |