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XLB · State Street(R) Materials Select Sector SPDR(R) ETF ETF

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$52.44 -0.18 (-0.34%) At close · Sep 4

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 529
Total Value: $7,443,544,615
Total Shares: 146,505,900
Showing 1–100 of 566 holdings by value · page 1 of 6

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 529 13F filers · Δ vs Mar 31, 2026
Top Holder
8.5%
Sep 2023 → Jun 2026 · range 8.3% – 17.2%
−0.4 pts
Top 5
29.5%
Sep 2023 → Jun 2026 · range 29.5% – 49.0%
−1.1 pts
Top 10
46.4%
Sep 2023 → Jun 2026 · range 46.1% – 62.7%
+0.3 pts
HHI
298
Sep 2023 → Jun 2026 · range 289 – 615
Broadly held+9

Quarterly Activity

vs Mar 31, 2026
New
84
Increased
217
Decreased
145
Sold Out
462
Unchanged
83
Holder count: -378
Institutional value: -12.5%
Shares held: -14.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 566
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Holder Value (USD) % of 13F Shares Open