Donaldson Company, Inc.
US ˙ NYSE ˙ US2576511099

SecurityDCI / Donaldson Company, Inc.
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership6,500 shares
Latest Disclosed Value $ 551,655
D. E. Shaw & Co., Inc. ownership in DCI / Donaldson Company, Inc.

On May 15, 2026 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 6,500 shares of Donaldson Company, Inc. (US:DCI) valued at $551,655 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 14, 2025 disclosing 0 shares of Donaldson Company, Inc.. The current value of the position is $554,060 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 DONALDSON COM 257651109 6,500 6,500 552 0.0002
2025-11-14 2025-09-30 13F DONALDSON COM 257651109 0 -3,739 -100.00 0 -100.00
2025-08-14 2025-06-30 13F DONALDSON COM 257651109 3,739 -33,912 -90.07 259 -89.74 0.0002
2025-05-15 2025-03-31 13F DONALDSON COM 257651109 37,651 -7,332 -16.30 2,525 -16.67 0.0022
2025-02-14 2024-12-31 13F DONALDSON COM 257651109 44,983 -4,750 -9.55 3,030 -17.35 0.0022
2024-11-14 2024-09-30 13F DONALDSON COM 257651109 49,733 -34,901 -41.24 3,665 -39.48 0.0031
2024-08-14 2024-06-30 13F DONALDSON COM 257651109 84,634 17,484 26.04 6,056 20.78 0.0057
2024-05-15 2024-03-31 13F DONALDSON COM 257651109 67,150 -37,155 -35.62 5,015 -26.44 0.0043
2024-02-14 2023-12-31 13F DONALDSON COM 257651109 104,305 11,142 11.96 6,816 22.68 0.0060
2023-11-14 2023-09-30 13F DONALDSON COM 257651109 93,163 78,065 517.06 5,556 489.18 0.0058
2023-08-14 2023-06-30 13F DONALDSON COM 257651109 15,098 15,098 944 0.0010
2023-02-14 2022-12-31 13F DONALDSON COM 257651109 0 -5,635 -100.00 0 -100.00
2022-11-14 2022-09-30 13F DONALDSON COM 257651109 5,635 -99,709 -94.65 276 -94.56 0.0003
2022-08-15 2022-06-30 13F DONALDSON COM 257651109 105,344 -79,957 -43.15 5,071 -47.30 0.0059
2022-05-16 2022-03-31 13F DONALDSON COM 257651109 185,301 40,554 28.02 9,623 12.20 0.0090
2022-02-14 2021-12-31 13F DONALDSON COM 257651109 144,747 22,219 18.13 8,577 21.92 0.0071
2021-11-15 2021-09-30 13F DONALDSON COM 257651109 122,528 9,281 8.20 7,035 -2.22 0.0063
2021-08-16 2021-06-30 13F DONALDSON COM 257651109 113,247 -91,076 -44.57 7,195 -39.46 0.0062
2021-05-17 2021-03-31 13F DONALDSON COM 257651109 204,323 -2,048 -0.99 11,884 3.05 0.0115
2021-02-16 2020-12-31 13F DONALDSON COM 257651109 206,371 121,054 141.89 11,532 191.14 0.0103
2020-11-16 2020-09-30 13F DONALDSON COM 257651109 85,317 3,807 4.67 3,961 4.46 0.0041
2020-08-14 2020-06-30 13F DONALDSON COM 257651109 81,510 -44,883 -35.51 3,792 -22.34 0.0045
2020-05-15 2020-03-31 13F DONALDSON COM 257651109 126,393 126,393 4,883 0.0076
2020-02-14 2019-12-31 13F DONALDSON COM 257651109 0 -26,855 -100.00 0 -100.00
2019-11-14 2019-09-30 13F DONALDSON COM 257651109 26,855 -36,523 -57.63 1,399 -56.61 0.0017
2019-08-14 2019-06-30 13F DONALDSON COM 257651109 63,378 18,860 42.36 3,224 44.64 0.0040
2019-05-15 2019-03-31 13F DONALDSON COM 257651109 44,518 -72,229 -61.87 2,229 -56.00 0.0029
2019-02-14 2018-12-31 13F DONALDSON COM 257651109 116,747 25,826 28.40 5,066 -4.36 0.0070
2018-11-14 2018-09-30 13F DONALDSON COM 257651109 90,921 -67,635 -42.66 5,297 -25.96 0.0064
2018-08-14 2018-06-30 13F DONALDSON COM 257651109 158,556 50,149 46.26 7,154 46.48 0.0093
2018-05-15 2018-03-31 13F DONALDSON COM 257651109 108,407 17,788 19.63 4,884 10.12 0.0066
2018-02-14 2017-12-31 13F DONALDSON COM 257651109 90,619 14,605 19.21 4,435 27.00 0.0061
2017-11-14 2017-09-30 13F DONALDSON COM 257651109 76,014 23,566 44.93 3,492 46.23 0.0054
2017-08-14 2017-06-30 13F DONALDSON COM 257651109 52,448 -179,921 -77.43 2,388 -77.42 0.0040
2017-05-15 2017-03-31 13F DONALDSON COM 257651109 232,369 70,643 43.68 10,577 55.43 0.0186
2017-02-14 2016-12-31 13F DONALDSON COM 257651109 161,726 146,642 972.17 6,805 1,108.70 0.0116
2016-11-14 2016-09-30 13F DONALDSON COM 257651109 15,084 -56,915 -79.05 563 -77.24 0.0010
2016-08-15 2016-06-30 13F DONALDSON COM 257651109 71,999 71,999 0.00 2,474 0.0046
2016-05-16 2016-03-31 13F DONALDSON COM 257651109 0 -122,007 -100.00 0 -100.00
2016-02-16 2015-12-31 13F DONALDSON COM 257651109 122,007 -102,890 -45.75 3,497 -44.62 0.0052
2015-11-16 2015-09-30 13F DONALDSON COM 257651109 224,897 166,361 284.20 6,315 201.43 0.0093
2015-08-14 2015-06-30 13F DONALDSON COM 257651109 58,536 52,063 804.31 2,095 758.61 0.0031
2015-05-15 2015-03-31 13F DONALDSON COM 257651109 6,473 6,473 0.00 244 0.0004
2014-11-14 2014-09-30 13F DONALDSON COM 257651109 0 -53,000 -100.00 0 -100.00
2014-08-14 2014-06-30 13F DONALDSON COM 257651109 53,000 -60,805 -53.43 2,243 -53.52 0.0031
2014-05-15 2014-03-31 13F DONALDSON COM 257651109 113,805 -17,957 -13.63 4,826 -15.72 0.0069
2014-02-14 2013-12-31 13F DONALDSON COM 257651109 131,762 -80,872 -38.03 5,726 -29.38 0.0078
2013-11-20 2013-09-30 13F/A-1 DONALDSON COM 257651109 212,634 25,709 13.75 8,108 21.65 0.0129
2013-11-14 2013-09-30 13F DONALDSON COM 257651109 212,634 8,108
2013-08-14 2013-06-30 13F DONALDSON COM 257651109 186,925 186,925 6,665 0.0125
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.