Kirby Corporation
DE ˙ DB ˙ US4972661064
121,00 € ↓ -2,00 (-1,63%)
2026-06-05
DEL PRIS
SecurityDE:KIY / Kirby Corporation
InstitutionArrowMark Colorado Holdings LLC
Latest Disclosed Ownership470,548 shares
Latest Disclosed Value $ 62,526,418
ArrowMark Colorado Holdings LLC reports 22.80% decrease in ownership of KIY / Kirby Corporation

On May 15, 2026 - ArrowMark Colorado Holdings LLC filed a 13F-HR form disclosing ownership of 470,548 shares of Kirby Corporation (DE:KIY) valued at $54,583,568 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 609,520 shares of Kirby Corporation. This represents a change in shares of -22.80% during the quarter. The current value of the position is $56,936,308 USD.

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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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 470,548 -138,972 -22.80 62,526 -6.89 1.6619
2026-02-17 2025-12-31 13F KIRBY COM 497266106 609,520 -197,684 -24.49 67,157 -0.30 1.4778
2025-11-14 2025-09-30 13F KIRBY COM 497266106 807,204 67,117 9.07 67,361 -19.74 1.2510
2025-08-14 2025-06-30 13F KIRBY COM 497266106 740,087 -132,020 -15.14 83,933 -4.72 1.5115
2025-05-15 2025-03-31 13F KIRBY COM 497266106 872,107 117,322 15.54 88,092 10.31 1.4266
2025-02-14 2024-12-31 13F KIRBY COM 497266106 754,785 76,436 11.27 79,856 -3.85 1.0740
2024-11-14 2024-09-30 13F KIRBY COM 497266106 678,349 -89,287 -11.63 83,050 -9.64 1.0638
2024-08-14 2024-06-30 13F KIRBY COM 497266106 767,636 -583,592 -43.19 91,909 -28.64 1.0960
2024-05-15 2024-03-31 13F KIRBY COM 497266106 1,351,228 -433,985 -24.31 128,799 -8.07 1.4463
2024-02-14 2023-12-31 13F KIRBY COM 497266106 1,785,213 10,479 0.59 140,104 -4.66 1.5464
2023-11-14 2023-09-30 13F KIRBY COM 497266106 1,774,734 -25,148 -1.40 146,948 6.10 1.7881
2023-08-14 2023-06-30 13F KIRBY COM 497266106 1,799,882 24,571 1.38 138,501 11.93 1.5199
2023-05-15 2023-03-31 13F KIRBY COM 497266106 1,775,311 407,226 29.77 123,739 40.56 1.4061
2023-02-14 2022-12-31 13F KIRBY COM 497266106 1,368,085 -166,163 -10.83 88,036 -5.58 1.0509
2022-11-14 2022-09-30 13F KIRBY COM 497266106 1,534,248 118,630 8.38 93,236 8.26 1.1435
2022-08-15 2022-06-30 13F KIRBY COM 497266106 1,415,618 -634,918 -30.96 86,126 -41.82 0.9855
2022-05-16 2022-03-31 13F KIRBY COM 497266106 2,050,536 -451,101 -18.03 148,028 -0.42 1.2951
2022-02-14 2021-12-31 13F KIRBY COM 497266106 2,501,637 323,103 14.83 148,647 42.27 1.1916
2021-11-15 2021-09-30 13F KIRBY COM 497266106 2,178,534 -14,368 -0.66 104,482 -21.43 0.8235
2021-08-16 2021-06-30 13F KIRBY COM 497266106 2,192,902 -580,847 -20.94 132,978 -20.47 1.0010
2021-05-17 2021-03-31 13F KIRBY COM 497266106 2,773,749 -137,174 -4.71 167,202 10.82 1.2502
2021-02-16 2020-12-31 13F KIRBY COM 497266106 2,910,923 -246,874 -7.82 150,873 32.09 1.1691
2020-11-16 2020-09-30 13F KIRBY COM 497266106 3,157,797 356,914 12.74 114,218 -23.86 1.0890
2020-08-14 2020-06-30 13F KIRBY COM 497266106 2,800,883 -66,512 -2.32 150,015 20.35 1.5622
2020-05-15 2020-03-31 13F KIRBY COM 497266106 2,867,395 1,283,415 81.02 124,646 -12.11 1.6366
2020-02-14 2019-12-31 13F KIRBY COM 497266106 1,583,980 -219,484 -12.17 141,814 -4.29 1.2611
2019-11-14 2019-09-30 13F KIRBY COM 497266106 1,803,464 -388,934 -17.74 148,173 -14.45 1.4785
2019-08-14 2019-06-30 13F KIRBY COM 497266106 2,192,398 -525,877 -19.35 173,199 -15.17 1.6649
2019-05-15 2019-03-31 13F KIRBY COM 497266106 2,718,275 231,026 9.29 204,170 21.86 1.9242
2019-02-14 2018-12-31 13F KIRBY COM 497266106 2,487,249 72,644 3.01 167,541 -15.64 1.7589
2018-11-14 2018-09-30 13F KIRBY COM 497266106 2,414,605 253,163 11.71 198,601 9.91 1.6627
2018-08-14 2018-06-30 13F KIRBY COM 497266106 2,161,442 -549,780 -20.28 180,697 -13.39 1.6583
2018-05-15 2018-03-31 13F KIRBY COM 497266106 2,711,222 30,515 1.14 208,629 16.51 2.0850
2018-02-14 2017-12-31 13F KIRBY COM 497266106 2,680,707 262,965 10.88 179,071 12.31 1.8131
2017-11-14 2017-09-30 13F KIRBY COM 497266106 2,417,742 679,999 39.13 159,450 37.26 1.8116
2017-08-14 2017-06-30 13F KIRBY COM 497266106 1,737,743 241,556 16.14 116,168 10.05 1.4384
2017-05-15 2017-03-31 13F KIRBY COM 497266106 1,496,187 240,329 19.14 105,556 26.39 1.4399
2017-02-14 2016-12-31 13F KIRBY COM 497266106 1,255,858 336,122 36.55 83,515 46.08 1.3195
2016-11-14 2016-09-30 13F KIRBY COM 497266106 919,736 89,705 10.81 57,171 10.40 1.0394
2016-08-15 2016-06-30 13F KIRBY COM 497266106 830,031 -148,701 -15.19 51,786 -12.24 1.0489
2016-05-16 2016-03-31 13F KIRBY COM 497266106 978,732 375,969 62.37 59,008 86.05 1.3110
2016-02-16 2015-12-31 13F KIRBY COM 497266106 602,763 54,939 10.03 31,717 -6.54 0.8670
2015-11-16 2015-09-30 13F KIRBY COM 497266106 547,824 56,884 11.59 33,938 -9.82 0.9271
2015-08-14 2015-06-30 13F KIRBY COM 497266106 490,940 82,857 20.30 37,635 22.88 0.9172
2015-05-15 2015-03-31 13F KIRBY COM 497266106 408,083 133,910 48.84 30,627 38.35 0.7937
2015-02-17 2014-12-31 13F KIRBY COM 497266106 274,173 33,617 13.97 22,137 -21.92 0.5691
2014-11-14 2014-09-30 13F KIRBY COM 497266106 240,556 -7,639 -3.08 28,350 -2.49 0.7777
2014-08-14 2014-06-30 13F KIRBY COM 497266106 248,195 20,020 8.77 29,074 25.85 0.8294
2014-05-15 2014-03-31 13F KIRBY COM 497266106 228,175 0 0.00 23,103 2.02 0.7510
2014-02-14 2013-12-31 13F KIRBY COM 497266106 228,175 -96,825 -29.79 22,646 -19.49 0.7040
2013-11-14 2013-09-30 13F KIRBY COM 497266106 325,000 325,000 28,129 0.9254
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.