Steel Strength Steadies Materials Sector While Quality Lags
Steel Dynamics and Nucor lifted materials to a flat close, but split breadth and a low share of top grades reflect continuing pressure across the group.
EasyAlpha Research · Oct 19, 2026 · Oct 19, 4:38 PM EDT
XLB · Materials Select Sector SPDR Fund
$50.930.0%
1 month
+1.9%
100 sessions
-0.8%
6 months
-1.6%
12 months
-42.0%
Session movers
STLDSteel Dynamics Inc
+1.9%NUENucor Corp
+1.8%MOSThe Mosaic Company
-4.9%
The Materials Select Sector SPDR Fund (XLB), an exchange-traded fund that tracks the sector, closed 0.0% on Monday, October 19, while the cap-weighted sector finished +0.1%. Inside the group, breadth was split evenly, with 50.0% of member companies advancing, while an equal-weighted return of -0.2% revealed drag among smaller firms. EasyAlpha grades the stocks in the sector against their industry peers, and only 38.9% of the fund's weight sits in companies graded A or B. Steelmakers did the heavy lifting on the day, as Steel Dynamics Inc closed +1.9% and Nucor Corp finished +1.8%. That strength followed a rotation toward cyclical materials names ahead of upcoming quarterly earnings.
On the downside, The Mosaic Company closed -4.9%, leading sector decliners, though our sources show no reported driver for the move. Across the wider equity market, 3 of the 11 sectors rose, highlighting how narrow leadership remained across the session.
The split performance reflects broader vulnerabilities across the group over longer horizons. Over the past twelve months, the fund has moved -42.0%. EasyAlpha grades each company against its industry peers. Companies graded A or B have stronger fundamentals, and historically they have carried a lower risk of large drawdowns than companies graded D or E. Because 38.9% of the fund sits in those top two tiers, the majority of the sector is concentrated in middle- and lower-tier companies.
The Materials Select Sector SPDR Fund provides low-cost exposure to the sector with an expense ratio of 0.08%, though its $7.8 billion in net assets remain exposed to persistent fundamental headwinds across the broader group. While steel shares provided stability on Monday, October 19, the lack of broader breadth and a low concentration of top-graded names show why the group has struggled to sustain upward momentum.
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How grades work
Every day we grade each company against the other companies in its sector, looking at its finances, how its stock trades, and what the market is signaling. The result is one simple letter.
- AExcellent quality
- BGood quality
- CAverage quality
- DBelow average
- EWeakest quality
A grade measures quality against the other companies in a sector, from historical data. It is not a prediction, not a price target, and not advice. A company can be graded A and still fall.