State Street SPDR Portfolio S&P 600 Small Cap ETF

State Street·Tracks S&P SmallCap 600 Index·Inception Jul 8, 2013

Expense ratio
0.030%
3.0 bps
Net assets
$16.85B
TTM yield
1.43%
Last price
$55.01
as of Sep 10, 2026

Composite score

96/ 100
Cost97

Based on a 0.030% expense ratio.

Liquidity100

Based on $16.85B in net assets.

Concentration98

Top-10 holdings represent 11.2% of net assets.

Tax efficiency88

US Small Cap base · ETF wrapper · 1.43% TTM yield.

Tracking quality75

Tracking error vs. the largest catalog peer tracking the same index. Not yet part of the composite — see methodology.

The composite is a weighted average of the four core sub-scores above (cost, tax efficiency, liquidity, concentration). Missing sub-scores fall back to the per-category median when the category has at least 50% data coverage, so funds without (e.g.) parsed N-PORT holdings aren't accidentally boosted by renormalization. Tracking quality is shown where computable but isn't currently part of the composite weighting. Seemethodologyfor formulas, thetracking-qualitypartial-coverage rationale, and the dimensions we deliberatelydon't score(methodology v0.5.1).

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Top holdings

609 total holdings· as of Jun 30, 2026
#HoldingWeight
1State Street Global Advisors5.85%
2FormFactor Inc0.68%
3Viasat Inc0.66%
4Molina Healthcare Inc0.65%
5Argan Inc0.60%
6BrightSpring Health Services Inc0.60%
7Element Solutions Inc0.59%
8MaxLinear Inc0.58%
9Krystal Biotech Inc0.53%
10ESCO Technologies Inc0.49%

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Affiliate links — opening an account through these earns PlainIndex a one-time referral. Scoring is computed before any affiliate consideration; see our methodologyand funding disclosure.

Holdings sourced fromSEC Form N-PORT-P(accession 0001410368-26-089362).