Kronos Worldwide, Inc.
US ˙ NYSE ˙ US50105F1057

SecurityKRO / Kronos Worldwide, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership177,188 shares
Latest Disclosed Value $ 1,164,126
Northern Trust Corp reports 8.89% increase in ownership of KRO / Kronos Worldwide, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 177,188 shares of Kronos Worldwide, Inc. (US:KRO) valued at $1,164,125 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 162,728 shares of Kronos Worldwide, Inc.. This represents a change in shares of 8.89% during the quarter. The current value of the position is $1,215,510 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)
2026-05-14 2026-03-31 13F KRONOS WORLDWIDE COM 50105F105 177,188 14,460 8.89 1,164 61.89 0.0002
2026-02-17 2025-12-31 13F KRONOS WORLDWIDE COM 50105F105 162,728 -20,744 -11.31 719 -31.72 0.0001
2025-11-14 2025-09-30 13F KRONOS WORLDWIDE COM 50105F105 183,472 -10,168 -5.25 1,053 -12.25 0.0001
2025-08-13 2025-06-30 13F KRONOS WORLDWIDE COM 50105F105 193,640 -6,759 -3.37 1,201 -19.89 0.0002
2025-05-13 2025-03-31 13F KRONOS WORLDWIDE COM 50105F105 200,399 -8,329 -3.99 1,499 -26.39 0.0002
2025-02-14 2024-12-31 13F KRONOS WORLDWIDE COM 50105F105 208,728 7,016 3.48 2,035 -18.96 0.0003
2024-11-13 2024-09-30 13F KRONOS WORLDWIDE COM 50105F105 201,712 -4 -0.00 2,511 -0.79 0.0004
2024-08-14 2024-06-30 13F KRONOS WORLDWIDE COM 50105F105 201,716 -5,257 -2.54 2,532 3.64 0.0004
2024-05-14 2024-03-31 13F KRONOS WORLDWIDE COM 50105F105 206,973 1,794 0.87 2,442 19.76 0.0004
2024-02-13 2023-12-31 13F KRONOS WORLDWIDE COM 50105F105 205,179 -981 -0.48 2,039 27.68 0.0004
2023-11-13 2023-09-30 13F KRONOS WORLDWIDE COM 50105F105 206,160 -13,890 -6.31 1,598 -16.87 0.0003
2023-08-11 2023-06-30 13F KRONOS WORLDWIDE COM 50105F105 220,050 9,177 4.35 1,921 -1.08 0.0004
2023-05-15 2023-03-31 13F KRONOS WORLDWIDE COM 50105F105 210,873 -602 -0.28 1,942 -2.26 0.0004
2023-02-13 2022-12-31 13F KRONOS WORLDWIDE COM 50105F105 211,475 122 0.06 1,988 0.66 0.0004
2022-11-14 2022-09-30 13F KRONOS WORLDWIDE COM 50105F105 211,353 -4,918 -2.27 1,974 -50.39 0.0005
2022-08-12 2022-06-30 13F KRONOS WORLDWIDE COM 50105F105 216,271 -1,742 -0.80 3,979 17.62 0.0009
2022-05-13 2022-03-31 13F KRONOS WORLDWIDE COM 50105F105 218,013 -8,518 -3.76 3,383 -0.47 0.0006
2022-02-08 2021-12-31 13F KRONOS WORLDWIDE COM 50105F105 226,531 -13,414 -5.59 3,399 14.14 0.0006
2021-11-15 2021-09-30 13F KRONOS WORLDWIDE COM 50105F105 239,945 -16,703 -6.51 2,978 -18.97 0.0005
2021-08-13 2021-06-30 13F KRONOS WORLDWIDE COM 50105F105 256,648 -22,504 -8.06 3,675 -13.95 0.0006
2021-05-12 2021-03-31 13F KRONOS WORLDWIDE COM 50105F105 279,152 -32,440 -10.41 4,271 -8.07 0.0008
2021-02-11 2020-12-31 13F KRONOS WORLDWIDE COM 50105F105 311,592 -18,271 -5.54 4,646 9.52 0.0009
2020-11-16 2020-09-30 13F KRONOS WORLDWIDE COM 50105F105 329,863 2,545 0.78 4,242 24.51 0.0009
2020-08-14 2020-06-30 13F KRONOS WORLDWIDE COM 50105F105 327,318 -17,234 -5.00 3,407 17.16 0.0008
2020-05-14 2020-03-31 13F KRONOS WORLDWIDE COM 50105F105 344,552 4,567 1.34 2,908 -36.17 0.0008
2020-02-14 2019-12-31 13F KRONOS WORLDWIDE COM 50105F105 339,985 -8,450 -2.43 4,556 5.68 0.0010
2019-11-13 2019-09-30 13F KRONOS WORLDWIDE COM 50105F105 348,435 -3,628 -1.03 4,311 -20.08 0.0010
2019-08-13 2019-06-30 13F KRONOS WORLDWIDE COM 50105F105 352,063 -21,019 -5.63 5,394 3.14 0.0013
2019-05-13 2019-03-31 13F KRONOS WORLDWIDE COM 50105F105 373,082 9,992 2.75 5,230 25.06 0.0013
2019-02-12 2018-12-31 13F KRONOS WORLDWIDE COM 50105F105 363,090 1,783 0.49 4,182 -28.77 0.0012
2018-11-14 2018-09-30 13F KRONOS WORLDWIDE COM 50105F105 361,307 10,816 3.09 5,871 -25.66 0.0014
2018-09-18 2018-06-30 13F/A-1 KRONOS WORLDWIDE COM 50105F105 350,491 9,700 2.85 7,898 2.56 0.0020
2018-08-14 2018-06-30 13F KRONOS WORLDWIDE COM 50105F105 358,074 17,283 8,069
2018-05-09 2018-03-31 13F KRONOS WORLDWIDE COM 50105F105 340,791 -6,589 -1.90 7,701 -13.97 0.0020
2018-02-14 2017-12-31 13F KRONOS WORLDWIDE COM 50105F105 347,380 -1,945 -0.56 8,952 12.25 0.0023
2017-11-13 2017-09-30 13F KRONOS WORLDWIDE COM 50105F105 349,325 -3,488 -0.99 7,975 24.07 0.0021
2017-08-11 2017-06-30 13F KRONOS WORLDWIDE COM 50105F105 352,813 27,566 8.48 6,428 20.31 0.0018
2017-05-12 2017-03-31 13F KRONOS WORLDWIDE COM 50105F105 325,247 4,625 1.44 5,343 39.61 0.0015
2017-02-13 2016-12-31 13F KRONOS WORLDWIDE COM 50105F105 320,622 8,365 2.68 3,827 47.82 0.0012
2016-11-09 2016-09-30 13F KRONOS WORLDWIDE COM 50105F105 312,257 22,659 7.82 2,589 70.33 0.0008
2016-08-12 2016-06-30 13F KRONOS WORLDWIDE COM 50105F105 289,598 1,452 0.50 1,520 -8.93 0.0005
2016-08-19 2016-03-31 13F/A-1 KRONOS WORLDWIDE COM 50105F105 288,146 2,718 0.95 1,669 3.66 0.0006
2016-05-13 2016-03-31 13F Kronos Worldwide COMM 50105F105 288,146 1,648
2016-02-12 2015-12-31 13F Kronos Worldwide COMM 50105F105 285,428 17,232 6.43 1,610 -3.30 0.0005
2015-11-12 2015-09-30 13F Kronos Worldwide COMM 50105F105 268,196 268,196 0.00 1,665 0.0006
2015-08-13 2015-06-30 13F Kronos Worldwide COMM 50105F105 0 -280,980 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Kronos Worldwide COMM 50105F105 280,980 -6,507 -2.26 3,555 -5.02 0.0011
2015-02-12 2014-12-31 13F Kronos Worldwide COM 50105F105 287,487 -9,315 -3.14 3,743 -8.48 0.0011
2014-11-13 2014-09-30 13F Kronos Worldwide COMM 50105F105 296,802 106,331 55.83 4,090 37.02 0.0013
2014-08-14 2014-06-30 13F KRONOS WORLDWIDE com 50105F105 190,471 16,769 9.65 2,985 3.04 0.0009
2014-05-14 2014-03-31 13F KRONOS WORLDWIDE COMM 50105F105 173,702 9,511 5.79 2,897 -7.38 0.0009
2014-02-21 2013-12-31 13F/A-1 KRONOS WORLDWIDE COM 50105F105 164,191 -99,509 -37.74 3,128 -23.43 0.0010
2014-02-12 2013-12-31 13F KRONOS WORLDWIDE COM 50105F105 164,191 3,128
2013-11-13 2013-09-30 13F KRONOS WORLDWIDE COM 50105F105 263,700 36,552 16.09 4,085 10.73 0.0014
2013-08-09 2013-06-30 13F KRONOS WORLDWIDE COM 50105F105 227,148 227,148 3,689 0.0013
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.