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KEX · Kirby Corp

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Market Cap
$7.34B
Shares
52.80M

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: 466
Total Value: $7,232,352,329
Total Shares: 53,190,797
Showing 1–100 of 469 holdings by value · page 1 of 5

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 466 13F filers · Δ vs Mar 31, 2026
Top Holder
10.1%
Sep 2023 → Jun 2026 · range 9.6% – 10.9%
+0.2 pts
Top 5
30.0%
Sep 2023 → Jun 2026 · range 30.0% – 38.0%
−0.2 pts
Top 10
45.7%
Sep 2023 → Jun 2026 · range 45.7% – 54.3%
−1.1 pts
HHI
302
Sep 2023 → Jun 2026 · range 302 – 407
Broadly held−2

Quarterly Activity

vs Mar 31, 2026
New
83
Increased
166
Decreased
148
Sold Out
53
Unchanged
69
Holder count: +30
Institutional value: +2.1%
Shares held: -0.2%

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 469
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 56047 CUSIP 497266106 13F (30d) 340 filings 335 filers Visit website Investor relations