State Street® SPDR® Portfolio S&P 400™ Mid Cap ETF

State Street® SPDR® Portfolio S&P 400™ Mid Cap ETF

About

State Street® SPDR® Portfolio S&P 400™ Mid Cap ETF (US78464A8475) is a US-listed equity ETF tracking the S&P MidCap 400 Index. With a expense ratio of 0.03%, it ranks among the lowest-cost options in its category, paying distributions. The fund holds 401 positions across 1 region with 18.2B in assets, with heavy concentration — 94% in United States.

Score Breakdown

Scores are scaled 1–10 on a logarithmic curve relative to all ETFs in the database. Last updated: Jul 5, 2026
Component Score Details
Cost (30%) 9.2 Tracking Difference: 8.9 · TD Consistency: — · Expense Ratio: 10.0
Liquidity (25%) 10.0 Assets Under Management

Data sources: provider factsheets, exchange data, and NAV history. Information for educational purposes only — not investment advice.

ISIN
Fund Size $18.2B
Issuer SPDR
Distribution Pays Distributions
Replication Physical
Inception Nov 2005
Base Currency USD
Index S&P MidCap 400 Index
Asset Class Equities
Category Factor Equity

Costs

9.2
This fund has low total costs, with competitive tracking and expense ratios.

Cost Metrics Explained

What expense ratio, tracking difference, and TD consistency measure

Expense ratio (Total Expense Ratio) is the annual fee the fund charges, deducted from assets. It’s the headline cost, but not the full picture.

Tracking Difference measures how much the fund actually lags (or leads) its benchmark index per year. This is the single best measure of true cost — it captures the expense ratio plus all other drags like sampling error and tax withholding. A lower (or negative) value is better.

TD Consistency measures how stable the tracking difference is from year to year. A low value means predictable, reliable costs; a high value means costs can vary significantly.
Expense Ratio0.00%
 
Metric Value
Expense Ratio 0.03%

Cumulative Returns

Performance across different time periods.
1 Month+0.00%
3 Months+0.00%
Year to Date+0.00%
1 Year+0.00%
3 Years+0.00%
5 Years+0.00%
Inception+0.00%
 
Period Cumulative Return
1 Month +2.45%
3 Months +0.12%
6 Months +0.14%
1 Year +25.83%
3 Years +17.41%
5 Years +8.05%
10 Years +11.42%
YTD +13.25%
Since Inception +9.89%

Holdings

6.3
This fund holds 401 individual investments, offering moderate diversification compared to other ETFs.
#1
T
Twilio Inc
0.88%
#2
C
Carpenter Technology Corp
0.84%
#3
C
Curtiss-Wright Corp
0.78%
#4
I
Illumina Inc
0.77%
#5
M
MKS Instruments Inc
0.77%
#6
A
ATI Inc
0.73%
#7
T
TECHNIPFMC PLC
0.72%
#8
N
NVENT ELECTRIC PLC
0.72%
#9
E
Entegris Inc
0.70%
#10
W
Woodward Inc
0.70%

Sectors

Allocation by industry sector.
 
Sector Weight
Industrials 2400.00%
Technology 1450.00%
Financials 1438.00%
Consumer Discretionary 1009.00%
Health Care 785.00%
Real Estate 674.00%
Unknown 602.00%
Materials 550.00%
Energy 334.00%
Consumer Staples 322.00%
Utilities 304.00%
Communication Services 143.00%

Regions

Geographic allocation by country of risk.
 
Country Weight
United States 9420.00%
UNKNOWN 580.00%

Documents

Regulatory and fund documents.
Fact Sheet

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