KIRBY CORP KEX
COM · Common Stock · CUSIP 497266106 · ISIN US4972661064
Maritime equipment corporation
- SectorIndustrials
- IndustryWater Transportation
- HeadquartersHouston, TX
- Founded1921
- Websitekirbycorp.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($34.3m this quarter). Holder counts are more reliable. Shares outstanding: 55.8m as of 2025-08-08, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $113.44. Options: 4 managers hold calls ($748.2k notional), 2 hold puts ($34.0k).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 260 |
| Q4 2022 | 285 |
| Q1 2023 | 286 |
| Q2 2023 | 283 |
| Q3 2023 | 315 |
| Q4 2023 | 316 |
| Q1 2024 | 329 |
| Q2 2024 | 404 |
| Q3 2024 | 409 |
| Q4 2024 | 431 |
| Q1 2025 | 413 |
| Q2 2025 | 410 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 134 | 132 |
| Q4 2023 | 132 | 165 |
| Q1 2024 | 151 | 161 |
| Q2 2024 | 209 | 159 |
| Q3 2024 | 196 | 191 |
| Q4 2024 | 194 | 191 |
| Q1 2025 | 211 | 205 |
| Q2 2025 | 213 | 190 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $16.2m | $477.5k | 0.03 |
| Q4 2024 | $6.2m | $645.4k | 0.10 |
| Q1 2025 | $4.4m | $414.0k | 0.09 |
| Q2 2025 | $748.2k | $34.0k | 0.05 |
Biggest buyers
| ALLIANCEBERNSTEIN L.P. | Added | +959.2k |
| Hood River Capital Management LLC | New | +650.6k |
| Encompass Capital Advisors LLC | Added | +300.0k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | New | +289.4k |
| CITADEL ADVISORS LLC | Added | +234.3k |
| Select Equity Group, L.P. | Added | +211.2k |
| MARSHALL WACE, LLP | New | +206.2k |
| FRANKLIN RESOURCES INC | Added | +189.3k |
| Appian Way Asset Management LP | New | +155.0k |
| Verition Fund Management LLC | Added | +131.5k |
Biggest sellers
| VANGUARD GROUP INC | Reduced | -256.0k |
| JENNISON ASSOCIATES LLC | Reduced | -254.4k |
| Nuveen, LLC | Reduced | -212.8k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -209.5k |
| Qube Research & Technologies Ltd | Reduced | -172.7k |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | -171.1k |
| HITE Hedge Asset Management LLC | Reduced | -150.2k |
| ArrowMark Colorado Holdings LLC | Reduced | -132.0k |
| BlackRock, Inc. | Reduced | -127.9k |
| FIRST TRUST ADVISORS LP | Reduced | -124.6k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $521.7k4.6k shares |
| CITADEL ADVISORS LLC | Reduced | $215.5k1.9k shares |
| SIMPLEX TRADING, LLC | Reduced | $11.0k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| SIMPLEX TRADING, LLC | Added | $34.0k300 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| DIMENSIONAL FUND ADVISORS LP 13G · institution new · filed 2026-07-14 | 5.2% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-07-31 | 5.0% |
Fell to 5% or below in the last year: GOLDMAN SACHS ASSET MANAGEMENT, L.P. (4.4%, 2026-08-14), VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC), MORGAN STANLEY (4.7%, 2026-02-12)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 9 | $6.3m | $1.1m |
| Q4 2023 | 0 | — | 3 | $1.6m | $709.8k |
| Q1 2024 | 0 | — | 8 | $5.3m | $2.4m |
| Q2 2024 | 0 | — | 10 | $3.9m | $1.0m |
| Q3 2024 | 0 | — | 4 | $7.1m | — |
| Q4 2024 | 0 | — | 4 | $8.5m | — |
| Q1 2025 | 0 | — | 1 | $520.3k | $520.3k |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 5.5m $627.6m | Reduced -256.0k |
| BlackRock, Inc. 0.01% of their portfolio | 4.9m $553.8m | Reduced -127.9k |
| MORGAN STANLEY 0.02% of their portfolio | 3.3m $376.6m | Reduced -45.0k |
| NEUBERGER BERMAN GROUP LLC 0.21% of their portfolio | 2.4m $275.9m | Reduced -69.7k |
| DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio | 2.4m $270.6m | Added +18.8k |
| ALLIANCEBERNSTEIN L.P. 0.08% of their portfolio | 2.3m $258.9m | Added +959.2k |
| Select Equity Group, L.P. 1.05% of their portfolio | 2.2m $245.6m | Added +211.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.04% of their portfolio | 1.9m $214.1m | Added +127.1k |
| STATE STREET CORP 0.01% of their portfolio | 1.6m $182.7m | Reduced -102.2k |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.71% of their portfolio | 1.4m $164.1m | Reduced -62.2k |
| Encompass Capital Advisors LLC 5.61% of their portfolio | 1.2m $139.0m | Added +300.0k |
| FIRST TRUST ADVISORS LP 0.10% of their portfolio | 1.1m $126.1m | Reduced -124.6k |
| JENNISON ASSOCIATES LLC 0.07% of their portfolio | 1.0m $118.6m | Reduced -254.4k |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 971.8k $110.2m | Reduced -19.2k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 802.9k $91.1m | Added +6.5k |
| FMR LLC 0.01% of their portfolio | 799.1k $90.6m | Added +101.8k |
| MACQUARIE GROUP LTD 0.11% of their portfolio | 783.5k $88.9m | Reduced -3.6k |
| JANUS HENDERSON GROUP PLC 0.04% of their portfolio | 753.1k $85.4m | Added +60.4k |
| Park West Asset Management LLC 6.49% of their portfolio | 750.0k $85.1m | Reduced -26.0k |
| ArrowMark Colorado Holdings LLC 1.51% of their portfolio | 740.1k $83.9m | Reduced -132.0k |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. 0.76% of their portfolio | 714.1k $81.0m | Added +80.3k |
| AMERIPRISE FINANCIAL INC 0.02% of their portfolio | 692.2k $78.5m | Reduced -10.8k |
| NORGES BANK 0.01% of their portfolio | 690.0k $78.3m | Reduced -3.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 685.9k $77.8m | Reduced -590 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC 0.25% of their portfolio | 662.2k $75.1m | Reduced -28.1k |
| Hood River Capital Management LLC 1.03% of their portfolio | 650.6k $73.8m | New |
| FRANKLIN RESOURCES INC 0.02% of their portfolio | 632.3k $71.7m | Added +189.3k |
| AQR CAPITAL MANAGEMENT LLC 0.06% of their portfolio | 626.2k $71.0m | Added +98.4k |
| D. E. Shaw & Co., Inc. 0.07% of their portfolio | 622.2k $70.6m | Reduced -107.8k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 504.1k $57.2m | Reduced -28.9k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 500.5k $56.8m | Added +9.1k |
| 12th Street Asset Management Company, LLC 9.48% of their portfolio | 486.2k $55.1m | Added +80.1k |
| VOYA INVESTMENT MANAGEMENT LLC 0.05% of their portfolio | 413.4k $46.9m | Reduced -171.1k |
| MILLENNIUM MANAGEMENT LLC 0.04% of their portfolio | 402.9k $45.7m | Reduced -209.5k |
| VICTORY CAPITAL MANAGEMENT INC 0.03% of their portfolio | 364.4k $41.3m | Reduced -47.4k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 364.1k $41.3m | Reduced -25.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 330.3k $37.5m | Reduced -30.4k |
| CITADEL ADVISORS LLC 0.03% of their portfolio | 328.3k $37.2m | Added +234.3k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.09% of their portfolio | 289.4k $32.8m | New |
| Artemis Investment Management LLP 0.41% of their portfolio | 279.3k $31.7m | Reduced -105.9k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 277.4k $31.5m | Added +101.2k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio | 258.9k $29.4m | Reduced -33.3k |
| Aventail Capital Group, LP 1.26% of their portfolio | 250.5k $28.4m | Unchanged |
| J. Goldman & Co LP 0.89% of their portfolio | 249.2k $28.3m | Added +6.5k |
| PRIMECAP MANAGEMENT CO/CA/ 0.02% of their portfolio | 241.9k $27.4m | Reduced -22.5k |
| Allspring Global Investments Holdings, LLC 0.04% of their portfolio | 225.8k $26.0m | Reduced -39.7k |
| MARSHALL WACE, LLP 0.03% of their portfolio | 206.2k $23.4m | New |
| DAVENPORT & Co LLC 0.13% of their portfolio | 203.3k $23.1m | Added +14.7k |
| Hudson Bay Capital Management LP 0.15% of their portfolio | 200.5k $22.7m | Added +100.6k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 198.9k $22.6m | Added +64.8k |
| CAPSTONE INVESTMENT ADVISORS, LLC 0.19% of their portfolio | 198.5k $22.5m | Reduced -80.2k |
| Hodges Capital Management Inc. 1.95% of their portfolio | 177.6k $20.1m | Added +7.7k |
| ROYCE & ASSOCIATES LP 0.19% of their portfolio | 165.8k $18.8m | Added +6.4k |
| Davidson Kempner Capital Management LP 0.29% of their portfolio | 165.0k $18.7m | Added +40.0k |
| Verition Fund Management LLC 0.11% of their portfolio | 163.2k $18.5m | Added +131.5k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 162.4k $18.4m | Reduced -20.2k |
| Appian Way Asset Management LP 4.41% of their portfolio | 155.0k $17.6m | New |
| VAN ECK ASSOCIATES CORP 0.02% of their portfolio | 152.6k $17.3m | Reduced -8.0k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 150.0k $17.0m | Reduced -3.7k |
| BESSEMER GROUP INC 0.03% of their portfolio | 149.0k $16.9m | Added +5.9k |
| VELA Investment Management, LLC 4.85% of their portfolio | 143.9k $16.3m | Added +13.6k |
| LATHROP INVESTMENT MANAGEMENT CO 2.96% of their portfolio | 137.9k $15.6m | Reduced -5.7k |
| NATIXIS ADVISORS, LLC 0.02% of their portfolio | 131.8k $14.9m | Added +7.6k |
| SummitTX Capital, L.P. 0.64% of their portfolio | 127.5k $14.5m | Added +75.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 127.2k $14.4m | Reduced -4.9k |
| Invesco Ltd. 0.00% of their portfolio | 125.8k $14.3m | Reduced -3.3k |
| FIL Ltd 0.01% of their portfolio | 124.0k $14.1m | Unchanged |
| Assenagon Asset Management S.A. 0.02% of their portfolio | 123.3k $14.0m | Reduced -61.0k |
| FRONTIER CAPITAL MANAGEMENT CO LLC 0.12% of their portfolio | 112.8k $12.8m | Reduced -337 |
| PEREGRINE CAPITAL MANAGEMENT LLC 0.38% of their portfolio | 110.6k $12.5m | Added +16.0k |
| OPPENHEIMER ASSET MANAGEMENT INC. 0.14% of their portfolio | 108.2k $12.3m | Added +20.5k |
| Retirement Systems of Alabama 0.04% of their portfolio | 103.7k $11.8m | Added +33.8k |
| TECTONIC ADVISORS LLC 0.67% of their portfolio | 101.5k $11.5m | Added +16.3k |
| Nuveen, LLC 0.00% of their portfolio | 101.4k $11.5m | Reduced -212.8k |
| California Public Employees Retirement System 0.01% of their portfolio | 96.6k $11.0m | Added +3.3k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 96.3k $10.9m | Added +27.9k |
| PRUDENTIAL FINANCIAL INC 0.02% of their portfolio | 94.1k $12.0m | Added +10.2k |
| Legal & General Group Plc 0.00% of their portfolio | 90.1k $10.2m | Reduced -2.6k |
| Glenmede Investment Management, LP 0.05% of their portfolio | 89.2k $10.1m | First filing |
| Empire Life Investments Inc. 0.64% of their portfolio | 88.8k $10.1m | Reduced -9.7k |
| SEI INVESTMENTS CO 0.01% of their portfolio | 88.6k $10.0m | Added +18.1k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 87.4k $9.7m | Added +9.8k |
| UBS Group AG 0.00% of their portfolio | 84.2k $9.5m | Added +51.7k |
| MOORE CAPITAL MANAGEMENT, LP 0.17% of their portfolio | 75.5k $8.6m | New |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 73.3k $8.3m | Reduced -66.1k |
| HITE Hedge Asset Management LLC 0.47% of their portfolio | 72.5k $8.2m | Reduced -150.2k |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 69.5k $7.9m | Reduced -172.7k |
| Schonfeld Strategic Advisors LLC 0.06% of their portfolio | 68.4k $7.8m | Added +55.9k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.33% of their portfolio | 67.5k $7.7m | Added +10.6k |
| Mountaineer Partners Management, LLC 4.90% of their portfolio | 65.4k $7.4m | New |
| AXIOM INVESTORS LLC /DE 0.06% of their portfolio | 62.4k $7.1m | Reduced -41.5k |
| Skylands Capital, LLC 0.96% of their portfolio | 58.4k $6.6m | Reduced -3.2k |
| FEDERATED HERMES, INC. 0.01% of their portfolio | 57.6k $6.5m | Reduced -5.5k |
| Trexquant Investment LP 0.07% of their portfolio | 57.5k $6.5m | Added +31.0k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 56.2k $6.4m | Added +90 |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 55.7k $6.3m | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 55.6k $6.3m | Added +19.0k |
| Atria Investments, Inc 0.07% of their portfolio | 54.3k $6.2m | Added +7.5k |
| Mariner, LLC 0.01% of their portfolio | 52.6k $6.0m | Added +8.9k |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO 0.02% of their portfolio | 51.7k $5.9m | Added +83 |