SPDR S&P MIDCAP 400 ETF TRUST (CIK 936958) is an SEC-registered fund company and $24.2B in net assets as of 2026-03-31.
| Series | Net assets |
|---|---|
| State Street SPDR S&P MidCap 400SM ETF Trust | $24.2B |
| Holding | Value |
|---|---|
| TechnipFMC PLC | $843.1M |
| Casey'S General Stores Inc. | $813.4M |
| United Therapeutics Corporation | $769.8M |
| Curtiss-Wright Corp. | $757.1M |
| FLEX LTD | $725.6M |
| XPO Inc | $687.1M |
| Woodward Inc. | $643.3M |
| Royal Gold, Inc. | $621.6M |
| US Foods Holding Corp | $613.1M |
| Burlington Stores Inc. | $610.0M |
| ATI Inc | $595.8M |
| Mastec, Inc. | $595.0M |
| Carpenter Technology Corporation | $591.9M |
| NVent Electric PLC | $575.4M |
| Twilio Inc | $575.1M |