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POWL · Powell Industries Inc

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Market Cap
$6.66B
Shares
36.43M

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: 587
Total Value: $8,645,719,737
Total Shares: 30,183,535
Showing 1–100 of 609 holdings by value · page 1 of 7

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 587 13F filers · Δ vs Mar 31, 2026
Top Holder
12.0%
Sep 2023 → Jun 2026 · range 12.0% – 17.3%
−1.5 pts
Top 5
30.0%
Sep 2023 → Jun 2026 · range 29.5% – 43.7%
+0.5 pts
Top 10
43.9%
Sep 2023 → Jun 2026 · range 43.3% – 56.9%
+0.6 pts
HHI
308
Sep 2023 → Jun 2026 · range 308 – 566
Broadly held−25

Quarterly Activity

vs Mar 31, 2026
New
156
Increased
167
Decreased
217
Sold Out
51
Unchanged
47
Holder count: +105
Institutional value: +52.5%
Shares held: +187.7%

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 609
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 80420 CUSIP 739128106 13F (30d) 416 filings 409 filers Visit website Investor relations