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STLD · Steel Dynamics Inc · Holdings

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Market Cap
$34.37B
Shares
143.33M

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: 1,028
Total Value: $27,718,593,270
Total Shares: 120,947,285
Showing 1–100 of 1,064 holdings by value · page 1 of 11

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 1,028 13F filers · Δ vs Mar 31, 2026
Top Holder
10.3%
Sep 2023 → Jun 2026 · range 10.3% – 15.0%
−0.1 pts
Top 5
35.7%
Sep 2023 → Jun 2026 · range 33.6% – 40.2%
+2.2 pts
Top 10
48.6%
Sep 2023 → Jun 2026 · range 46.6% – 52.1%
+2.0 pts
HHI
341
Sep 2023 → Jun 2026 · range 325 – 481
Broadly held+16

Quarterly Activity

vs Mar 31, 2026
New
159
Increased
345
Decreased
375
Sold Out
74
Unchanged
149
Holder count: +85
Institutional value: +28.9%
Shares held: +1.2%

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 1,064
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1022671 CUSIP 858119100 13F (30d) 194 filings 193 filers Visit website Investor relations