Kirby Corporation
DE ˙ DB ˙ US4972661064
123,00 € ↑1,00 (0,82%)
2026-06-04
DEL PRIS
SecurityDE:KIY / Kirby Corporation
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership318,346 shares
Latest Disclosed Value $ 42,301,816
Millennium Management Llc ownership in KIY / Kirby Corporation

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 318,346 shares of Kirby Corporation (DE:KIY) valued at $36,928,136 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 597,996 shares of Kirby Corporation. This represents a change in shares of -46.76% during the quarter. The current value of the position is $39,156,558 USD.

Millennium Management Llc has a history of taking positions in derivatives of the underlying security (KIY) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

DE:KIY / Kirby Corporation Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F KIRBY COM 497266106 318,346 -279,650 -46.76 42,302 -35.80 0.0176
2026-02-17 2025-12-31 13F KIRBY COM 497266106 597,996 -241,666 -28.78 65,887 -5.97 0.0277
2025-11-14 2025-09-30 13F KIRBY COM 497266106 839,662 436,735 108.39 70,070 53.34 0.0299
2025-08-14 2025-06-30 13F KIRBY COM 497266106 402,927 -209,473 -34.21 45,696 -26.13 0.0221
2025-05-15 2025-03-31 13F KIRBY COM 497266106 612,400 202,167 49.28 61,859 42.52 0.0329
2025-02-14 2024-12-31 13F KIRBY COM 497266106 410,233 12,973 3.27 43,403 -10.76 0.0212
2024-11-14 2024-09-30 13F KIRBY COM 497266106 397,260 -136,066 -25.51 48,637 -23.83 0.0231
2024-08-14 2024-06-30 13F KIRBY COM 497266106 533,326 61,573 13.05 63,855 42.00 0.0296
2024-05-15 2024-03-31 13F KIRBY COM 497266106 471,753 45,180 10.59 44,967 34.32 0.0192
2024-02-14 2023-12-31 13F KIRBY COM 497266106 426,573 -241,932 -36.19 33,477 -39.52 0.0145
2023-11-14 2023-09-30 13F KIRBY COM 497266106 668,505 132,427 24.70 55,352 34.18 0.0279
2023-08-14 2023-06-30 13F KIRBY COM 497266106 536,078 211,522 65.17 41,251 82.35 0.0203
2023-05-15 2023-03-31 13F KIRBY COM 497266106 324,556 -127,908 -28.27 22,622 -22.30 0.0130
2023-02-14 2022-12-31 13F KIRBY COM 497266106 452,464 180,298 66.25 29,116 76.03 0.0161
2022-11-14 2022-09-30 13F KIRBY COM 497266106 272,166 54,971 25.31 16,540 25.17 0.0098
2022-08-15 2022-06-30 13F KIRBY COM 497266106 217,195 191,783 754.69 13,214 620.50 0.0082
2022-05-16 2022-03-31 13F KIRBY COM 497266106 25,412 -185,563 -87.95 1,834 -85.37 0.0010
2022-02-14 2021-12-31 13F KIRBY COM 497266106 210,975 148,491 237.65 12,536 318.28 0.0064
2021-11-15 2021-09-30 13F KIRBY COM 497266106 62,484 17,785 39.79 2,997 10.55 0.0018
2021-08-16 2021-06-30 13F KIRBY COM 497266106 44,699 -41,821 -48.34 2,711 -48.02 0.0017
2021-05-17 2021-03-31 13F KIRBY COM 497266106 86,520 -81,328 -48.45 5,215 -40.06 0.0037
2021-02-16 2020-12-31 13F KIRBY COM 497266106 167,848 153,505 1,070.24 8,700 1,576.30 0.0063
2020-11-16 2020-09-30 13F KIRBY COM 497266106 14,343 -88,864 -86.10 519 -90.61 0.0006
2020-08-14 2020-06-30 13F KIRBY COM 497266106 103,207 80,621 356.95 5,528 462.93 0.0076
2020-05-14 2020-03-31 13F KIRBY COM 497266106 22,586 -90,795 -80.08 982 -90.33 0.0022
2020-02-14 2019-12-31 13F KIRBY COM 497266106 113,381 -68,573 -37.69 10,151 -32.10 0.0127
2019-11-14 2019-09-30 13F KIRBY COM 497266106 181,954 178,180 4,721.25 14,949 4,916.44 0.0236
2019-08-15 2019-06-30 13F/A-1 KIRBY COM 497266106 3,774 3,774 298 0.0004
2019-08-14 2019-06-30 13F KIRBY COM 497266106 3,774 3,774 298
2019-05-14 2019-03-31 13F KIRBY COM 497266106 0 -742,246 -100.00 0 -100.00
2019-02-15 2018-12-31 13F/A-1 KIRBY COM 497266106 742,246 742,246 49,998 0.0780
2019-02-14 2018-12-31 13F KIRBY COM 497266106 742,246 49,998
2018-08-14 2018-06-30 13F KIRBY COM 497266106 0 -19,524 -100.00 0 -100.00
2018-05-15 2018-03-31 13F KIRBY COM 497266106 19,524 19,524 1,502 0.0020
2016-11-14 2016-09-30 13F KIRBY COM 497266106 0 -65,040 -100.00 0 -100.00
2016-08-15 2016-06-30 13F KIRBY COM 497266106 65,040 -41,166 -38.76 4,058 -36.62 0.0093
2016-05-16 2016-03-31 13F KIRBY COM 497266106 106,206 -462,708 -81.33 6,403 -78.61 0.0160
2016-02-16 2015-12-31 13F KIRBY COM 497266106 568,914 230,880 68.30 29,936 42.95 0.0629
2015-11-16 2015-09-30 13F KIRBY COM 497266106 338,034 160,459 90.36 20,941 53.83 0.0406
2015-08-14 2015-06-30 13F KIRBY COM 497266106 177,575 -241,105 -57.59 13,613 -56.68 0.0257
2015-05-15 2015-03-31 13F KIRBY COM 497266106 418,680 124,857 42.49 31,422 32.45 0.0585
2015-02-17 2014-12-31 13F KIRBY COM 497266106 293,823 129,482 78.79 23,723 22.49 0.0503
2014-11-14 2014-09-30 13F KIRBY COM 497266106 164,341 94,536 135.43 19,368 136.86 0.0490
2014-08-14 2014-06-30 13F KIRBY COM 497266106 69,805 19,199 37.94 8,177 59.58 0.0226
2014-05-15 2014-03-31 13F KIRBY COM 497266106 50,606 50,606 -16.25 5,124 -2.03 0.0149
2014-02-14 2013-12-31 13F KIRBY COM 497266106 0 -60,427 -100.00 0 -100.00
2013-11-14 2013-09-30 13F KIRBY COM 497266106 60,427 12,784 26.83 5,230 37.99 0.0168
2013-08-14 2013-06-30 13F KIRBY COM 497266106 47,643 47,643 3,790 0.0116
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-05-15 2015-03-31 13F KIRBY COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-02-17 2014-12-31 13F KIRBY COM Call 4,300 -95.77 347 -97.10 n/a n/a n/a
2014-11-14 2014-09-30 13F KIRBY COM Call 101,600 11,974 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-05-15 2015-03-31 13F KIRBY COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-02-17 2014-12-31 13F KIRBY COM Put 5,200 420 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.